Build Your Own Butler Robot!!! - Tutorial,Photos, and Video

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Picture of Build Your Own Butler Robot!!!  - Tutorial,Photos, and Video
EDIT: More info on my projects check out my new website: narobo.com

I also do consulting for robotics , mechatronics, and special effects projects/products. Check out my website - narobo.com for more details.

Ever wanted a butler robot that talks to you , follows you around , and even pours you drinks? Read this instructable to learn how to build your own voice controlled butler robot which has many cool features.

This tutorial will show you how to make the butler robot , but any improvements that I add after this tutorial is finished will not be edited into this tutorial, but rather it will appear on my robotics blog : eRobots.BlogSpot.com . eRobots.BlogSpot.com My blog has a lot of cool robotics and electronics stuff, so check it out!

Please note that this tutorial can be modified to each person's needs and you do not have the follow the exact dimensions that I wrote. To make it easier for users I did write the dimensions that I used if they wanted a reference point.

I built my first version of my butler robot in 2007 and in June 2008 I began to make a newer version. The older version can be seen here:

The Functions of The Butler Robot:

1. Voice Commands for weather, time, and temperature

2. Pour a drink bottle into a cup

3. Manual control with a joystick

4. Cool soda cans in a mini fridge

5. Face recognition and greet people by their names

6. Follow a person wearing a certain color shirt

7. Avoid obstacles

8. Automatically dock to a charger

9. Sweep the floor

10. Wireless control over the internet

11. Wireless Remote Control from iPod Touch or SmartPhone


Someone told me that this looks like dalek from Doctor Who. Holy cow it does and I didn't even hear about Dalek or even Doctor Who until this morning!

MY PROMISE: If I win this contest and win a ticket to RoboGames, I will make a sleeker , cooler version of my butler robot ( equipped with tri-tracks, CNC body, better robot arm) in 2009. I will enter that butler robot in RoboGames 2009 AND I will document that revised version even more than I documented this robot! That's gonna be a very very detailed tutorial!
So please vote for me !!!
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Step 1: Bill of Materials

Picture of Bill of Materials
Here is the final bill of materials. I divided it up into sections and included prices. So break open your piggy bank and collect the money , you'll be surprised it costs less than $500 !!! ( not including laptop)

Please note that this is what I paid , I will include some comments on items I feel could be purchased for cheaper. These prices are not final and a lot of them I am not exactly sure of what I paid since a lot were lying around my workshop for months and I don't remember the exact prices , only their relative ones.

I purchased all my parts from eBay ,Jameco, Home Depot , and AllElectronics.com . I used parts that are very common to find so you shouldn't have trouble finding any of them.


1. Drill

2. Electric Screwdriver

3. Soldering Iron with solder

4. Hot Glue Gun

5. Small flat head screwdriver

6. Scissors

7. Wire Stripper

8. Some sort of saw to cut the wood

9. Black Spray Paint Canister - $5

10. Silver Spray Paint Canister - $5


1. Two Wheelchair Motors - $100 on eBay
2. One 14" x 21" plywood 3/4" thick - $2 ( this depends on how big a piece of wood you buy and how much you cut)
3. Four machine screws ( this depends on what the wheelchair mounting holes accept) - $0.64
4. Four washers for the machine screws - $0.50
5. One caster to support at least 150lbs - $5.40
6. Two screws to mount your caster ( this also depends on what the caster mounting holes accept) - $0.32

Motor Control:

1. Eight 30amps automotive relays (cheapest I found is herehere) - $19.20
2. Four dual relay sockets (cheapest can be found herehere) - $12.00
3. Two 12V 20AH batteries ( you could really just get one and that would suffice) - $60.00
4. Phidgets 0/16/16 (I bought from TrossenRobotics.com , though eBay sometimes has them) - $99.00
5. Some 22 ga. or thicker black wire( get a 20ft roll and that will be enough for the whole project) -$3.00
6. Some 22ga. or thicker red wire ( 20ft roll will suffice for the whole project as well)-$3.00
7. Different color of electrical tape ( yellow,black,red,white) - $2.69
8. See through plastic cover - $2.00
9. Six L brackets ( each angle is 3" and 2" thick) - $3.00
10. Eight #8 x 1" drywall screws - $0.16
11. One 120V Light Switch w/ at least 14 ga. wires attached - $5.49

Lower Body:

1. Two 14.5" x 8" plywood 3/4" thick -$4.00

2. Two of 11.5" x 8" plywood 3/4" thick - $4.00

3. One of 14.5" x 13" Plexiglas 1/4" thick - $3.00

4. Seventeen #8 x 1" drywall screws - $0.34

5. Three L brackets ( each angle is 3" and 2" thick) - $1.50

6. Six #8 x 1/2" thick plastic spacers - $0.12

Upper Body:

1. One 5.5" x 9" plywood 3/4" thick- $1.00

2. One 5" x 9" plywood 3/4" thick - $1.00

3. Two 10" x 21" plywood 3/4" thick - $4.00

4. One 9" x 11.5" plywood 3/4" thick - $1.00

5. One 9" x 21" plywood 3/4" thick - $2.00

6. One 12VDC Automotive MiniFridge - $15.00 ( got lucky on eBay)

7. Six L brackets( each angle is 3" and 2" thick)-$3.00

8. Two #8-32 x 1/4" machine screw with two nuts and washers- $0.50

9. Twenty two #8 x 1" drywall screws - $0.44

Robot's Head:

1. 12" diameter cake cover - $1.29

2. One 1.5" dia. PVC slip-joint nut - $0.75

3. One PVC 7" x 1.5" diameter $ 3.00

4. One webcam - $5.00 ( eBay is a wonderful place)

Robot Arms :

1. Robot Arm Grabber Toy - $10

2. Two 1.5" dia. PVC slip-joint nut - $1

3.One 2" length PVC coupling - $0.50

4. Two 1.5" dia. PVC threaded pipe that is at least 4" long ( this can be cut into a straight piece) - $1

5. Two 17" x 1.5" dia. PVC pipe - $ 4.00

6. Five L brackets( each angle is 3" and 2" thick) - $2.75

7. Four #8 x 1.75" drywall screws - $0.08

8. Four small L brackets ( servocity has similar http://servocity.com/html/534-633_bracket.htmlones, but theres always eBay :P ) - $0.60
9. One 6V NimH battery(I used that) or 6V battery pack(cheaper) - $11

10. HS-425BB servo( electronics were fried so I got it cheap) - $5

11. Rim of a 4" dia. Lego Wheel- $0.15

12. 1.5" dia. duct connector - $3.00

13. Motorized back wheels of toy R/C car - $1.00 ( eBay has a large selection of broken R/C cars whose motors still work)

14. Two skinny L brackets ( its like 3" long at each angle but only 1/2" wide) - $0.50

15. Eleven #8 - 1" drywall screws - $0.22

Plus the laptop of choice --- this can be anywhere from $100 - $3000 . I used an old one that was lying around

Also I want you all to know that around 50% of all the parts I had from beforehand in my workshop so it only costed me like 50% of the total price listed here. You too probably have a bunch of the above parts lying around your house or perhaps you have friends who would be willing to donate parts, just use your resources and you could make this thing much cheaper than it is now.

Total Bill: $420.14 + laptop of choice

Step 2: Building the Chassis

Picture of Building the Chassis
The first step to building a butler robot is to construct a chassis.

The chassis is probably the most important part of the robot. If this fails than the entire robot is practically pointless. This is the foundation of the robot. The chassis is the mode of transportation of the robot.

For motors I decided to use preowned wheelchair motors since they were pretty cheap ( ~$70 on eBay) and since they can handle a very heavy load .

What to ask when buying a wheelchair motor:

  • Do the motors actually work?
  • Do the motors come with wheels attached?
  • Do they draw more than 15 amps per hour?
  • Do they have too high RPM? ( this is relative to your application )
  • Do the motors have bad gears that make a lot of noise when turning?

RPM stands for revolutions per minute. Now lets examine that further. That means that at 1 RPM a 12" wheel will turn exactly once , which also means that the wheel traveled 12". Now if that number was higher , say 60 RPM , then that would mean the robot would travel 12" per second. Now for me thats too fast , but it all depends how fast you need it to go.

Step 3: Choosing the Right Materials

Picture of Choosing the Right Materials

The material we need for the chassis needs to be strong and able to support massive pounds. I went along with wood , though plexiglass will be okay. Make sure you use 3/4" thick wood . Any thinner will not really support the weight. 1" is okay also, but its just extra weight.

I used: 14" x 21" and 3/4" thick

Step 4: Mounting the Motors

Picture of Mounting the Motors
You then mount each wheelchair motor to a piece of wood or plexiglas using the mounting holes as shown in the picture. Use washers and the appropriate sized thread when securing the motors to the material. Try to align the sides of the motors with the wood so that the wheels are aligned straight.

Step 5: Mounting the Caster Wheel

Picture of Mounting the Caster Wheel
Get a caster that can support 250 pounds . I purchased one from Home Depot, but any caster that can support 250 lbs. is good.

Attach the caster to the base as shown in the picture.

Now you should have a base looking something like the last picture attached.

Step 6: Building the Motor Control System

Picture of Building the Motor Control System
After the chassis is complete we have to make an interface to the motors so that we can control it from a laptop.

The two best methods to control a motor are using a MOSFET motor driver or using a relay. Since I am all about making a robot from common parts and taking advantage of everything available , I used relays. The only downside of a relay is that they cannot be PWMed , which in plain english means you can't have speed control with relays.

For those who have 125 dollars to spend on motor interface , they can get a serial motor controllera serial motor controller which does have speed control and can handle around 20 amps.

For the majority who dont have that cash to spend, you guys will use automotive relays. The relays I used can be found herehere. Make sure that you getthis socket this socket also. The socket is awesome because it has color coded wires AND it allows you to replace relays easily. You need a total of 8 relays and a total of 4 dual relay sockets.

Step 7: Powering the Motor Control System

Picture of Powering the Motor Control System
The motors will be powered by either one or two 12V lead acid battery(ies) OR buy two 6V batteries. The battery(ies) that you buy must be able to provide at least 20AH each. If you decide to go with two 12V batteries you wire the batteries in parallel, if they are two 6V batteries then you wire them in series. If its only one 12V battery then obviously you just directly connect wires to the battey without any hitch.

The relays need their own separate supply of 12V to actuate them . The relays will be actuated by the the main 12 volt power supply of the motors. The reason we can't connect them directly to the computer switching circuit ( we will deal with that in the next step) is because that circuit can only handle 4 amps , and our motors draw 11 amps each . The relays draw less than 4 amps and can therefore control the motors easily.

Step 8: Preparing to Make the Controller Circuit

Picture of Preparing to Make the Controller Circuit
Step 1: Know what everything does - the relays ,Phidgets interface, and the batteries

Before we actually start making the relay motor controller circuit let's examine what a relay is and how it works.

Read the HowStuffWorks Article on Relays.

You should now understand that a relay is an electromagnet and a switch, and when the electromagnet has electricity running through it the switch closes, but otherwise the switch is open. The switch in our relay will turn on or turn off a motor. You need 4 relays to make a motor be able to go forwards and reverse. If you want to understand how that works have a look at this page.

The electromagnet will be turned on by a neat piece of hardware called a Phidgets Interface Kit. That is the hardware that will interface the computer to the relays. The interface board consists of 16 inputs and 16 outputs. Right now we are interested in the digital outputs. The outputs are just digital switches that switch to ground.

In the diagram attached you can see that between points 85 and 86 there is the electromagnet which pulls the switch between 87 and 30 using its magnetic pull.

Step 9: Wiring the Relays For Motor A

Picture of Wiring the Relays For Motor A

Step 2: Wiring the relays for Motor A

You should have 8 relays and 4 dual sockets. Put each relay in its designated socket.

The following steps are only for two dual sockets ( four relays). The other two remaining dual sockets will get a different wiring which will be detailed in step number three.

By the way whenever I say to connect the wires , I mean to solder them together. Also, the wheelchair motors should have four wires coming out. There are two thick ones and two skinny ones. Leave the skinny ones alone for now. The thick ones should also be different colors, usually blue and red. If its different colors then just know that I refer to one of the wires as the blue wire and the other one as the red wire.

You can either follow the steps below or just read this schematic and follow it. Make sure you follow the shematic by color code.

A. First Dual Socket:

1. One of the relays in the dual socket

Here is the color code key for the wires for the one of the relays on the socket , do this for only ONE of the relays:

BLUE- Connect to power( the positive ) of the motor's batteries. This is the motor's battery's , not the batteries for the relays.

BLACK- Connect to the ground(negative) of the relay's battery

YELLOW- Connect to the blue wire of the motor

WHITE- Leave alone for now

RED - Not used in this project so you could just rip it out or whatever

2. The other relay in the dual socket

Now for the OTHER relay thats in the same dual socket as the other one we just did:

BLUE- Connect to ground( the negative) of the motor's batteries. This is the motor's battery's , not the batteries for the relays.

BLACK- Connect to the ground(negative) of the relay's battery

YELLOW- Connect to the red wire of the same motor used above

WHITE- Connect to the white wire of the other relay in the same dual socket

RED - Not used in this project so you could just rip it out or whatever

Now that we are done with that dual socket , so set it aside. Pickup the second dual socket.

B. Second Dual Socket:

1. One of the relays in the dual socket

Here is the color code key for the wires for the one of the relays on the socket , do this for only ONE of the relays:

BLUE- Connect to power( the positive ) of the motor's batteries. This is the motor's battery's , not the batteries for the relays.

BLACK- Connect to the ground(negative) of the relay's battery

YELLOW- Connect to the red wire of the motor

WHITE- Leave alone for now

RED - Not used in this project so you could just rip it out or whatever

2. The other relay in the dual socket

Now for the OTHER relay thats in the same dual socket as the other one we just did:

BLUE- Connect to ground( the negative) of the motor's batteries. This is the motor's battery's , not the batteries for the relays.

BLACK- Connect to the ground(negative) of the relay's battery

YELLOW- Connect to the blue wire of the same motor used above

WHITE- Connect to the white wire of the other relay in the same dual socket

RED - Not used in this project so you could just rip it out or whatever

Step 10: Wiring the Relays For Motor B

Picture of Wiring the Relays For Motor B
STEP 3: Wiring the Relays for Motor B

Now we have finished the motor control for one of the motors. One motor down, one more to go. The other motor will have the EXACT same wiring as the first motor except that YELLOW wires will go to the second motor and not to the first motor ( which we just finished wiring above) . So follow the exact steps for wiring it again , making sure to wire it to the second motor and not the first.

Step 11: Connecting the Relay's White Wires

Picture of Connecting the Relay's White Wires

After you are done wiring both motors , locate the white wires. From each wire joint ( point where the white wires were soldered together) you need to connect some wire ( NOT ONE OF THE RELAY SOCKET WIRES) to the joint and then leave the end of that wire alone. If you followed the schematic and not the written steps , then you already did this step.

OK so if you followed all the steps correctly you should have four wires(one per dual socket) which are connected on one side to the relays, but are not connected to anything on the other side. You should also have a ton of wires everywhere.

Step 12: Enclosing the Phidgets and Labeling

Picture of Enclosing the Phidgets and Labeling
I put both my relay circuits in a nice plastic box and closed it up. This protects the relays and also looks nice as well. Notice how neat it looks! I labeled each individual relay. I labeled them by color coded tape and by typed up label.

Step 13: Mounting the Batteries

Picture of Mounting the Batteries
If you haven't done so already , mount the batteries. Use L brackets to hold the batteries in place. L brackets are 90 degree brackets of metal that can be found in all hardware stores ( like Home Depot, Lowes, etc.) Just use the L brackets like I used it below to fasten the batteries to the chassis. Make sure the batteries are fastened tightly and don't move, because while the robot is moving you don't want heavy objects like batteries falling out. Also, notice that I put duct tape to cover the battery's terminals. You should do the same because you want to have the battery's terminal covered at all times to prevent short circuits.

Step 14: Connecting and Mounting the Phidgets

Picture of Connecting and Mounting the Phidgets
Remember the four wires you have from the wire joint from the relay? Now its time to connect them to the Phidgets. Connect the wires to the Phidgets output ports 0 - 3. Each wire getting its own terminal, order doesn't really matter. Also , connect a wire to the relay battery's ground connection ( negative side) and connect the other end to the two Phidgets terminals closest to output terminals 0 - 3 , they are marked "G". This assigns each output of the Phidget to its own dual relay.

To mount the Phidgets just stick screws or nails through its mounting hole and into the top of the plastic box which encloses your entire relay circuit. If you don't like that , then just mount it anywhere as long as the wires aren't getting to tightly pulled.

Step 15: Connect the Kill Switch

Picture of Connect the Kill Switch
Wheelchair robots are very powerful machines, if something goes wrong and it doesn't stop or something it WILL DO DAMAGE. This is why we need to install a mechanical kill switch. All the switch is , is a standard light switch. The switch should have either two wires or two terminals on the side of it. Just cut the negative wire that is going from the motor's battery to the relays. Now that it's cut , connect a switch in between the two wires. Very simple.

Step 16: Building an Enclosure for the Motor Control System

Picture of Building an Enclosure for the Motor Control System

When we ended off in the motor control section , the robot had no enclosure and was entirely open and prone to damage.

To make a box for the phidgets and relays you'll first need to measure it out.

If you followed my template then you will need:

  • Two pieces of 14 1/2" by 8 " plywood and 3/4" inch thick
  • Two pieces of 11 1/2" by 8" plywood , 3/4" thick
  • One piece 14 1/2" by 13" plexiglas piece

Assemble the wood pieces only for now as shown in the picture, it should be a rectangle. Just take some regular 3/4" drywall screws or some nails and attach the wood like as pictured below:

Now to see if its the correct measurements put the box you just made over the batteries, relays and phidgets. It should fit around them perfectly , as demonstrated below.

Step 17: Painting the Motor Control Enclosure Silver

Picture of Painting the Motor Control Enclosure Silver

Take the the wood enclosure off the chassis and lay it on the floor in a well ventilated area. Now get a canister of silver spray paint or just a bucket of silver paint and a paintbrush. It would also be a good idea to wear gloves right about now. Spray paint the entire outside of the wood in an even coat of paint. Then let it dry for about an hour or two .

Step 18: Fasten the Wooden Enclosure to the Chassis

Picture of Fasten the Wooden Enclosure to the Chassis
Fasten the (now silver and hopefully dry paint) wood enclosure to the chassis using L brackets.

Now it should look like this after you fasten it down with L brackets.

The CAD for this step can be found here:

Step 19: Attaching the Plexiglas Cover

Picture of Attaching the Plexiglas Cover

Now take a handful. 1/4" plastic spacers
Nail two or three spacers to each side of the top of the enclosure as show in the picture below:

Take that piece of plexiglass that we cut before and put them on top of the spacers. Then drill holes in the plexiglas so that the holes are over the spacer holes and screw the plexiglass through the spacer into the wood.

Step 20: Building the Upper Body

Picture of Building the Upper Body
After the bottom is completely assembled and the robot is actually starting to like like a robot, we have to build the upper body , which is the part that will really define the butler robot.This stage will also require the most amount of materials.

I used:

  • one 5.5" x 9" plywood and 3/4" thick
  • one 5" x 9" plywood piece and 3/4" thick
  • two 10" x 21" plywood piece and 3/4" thick
  • one 9" x 11.5" plywood piece and 3/4" thick
  • one 9" x 21" plywood piece and 3/4" thick

Cut those materials and lay them outside on the floor. Take out a canister of black spray paint and prepare to paint!

Step 21: Painting the Wood and the Mini Fridge

Picture of Painting the Wood and the Mini Fridge
Spray paint the wood pieces black and also spray paint the mini-fridge if its not black.

Wear latex gloves so your hands don't get dirty and also be sure to do the painting outdoors , its dangerous to inhale those vapors.

Step 22: Building the Lower Portion of the Body

Picture of Building the Lower Portion of the Body
Attach the 5.5" x 9" piece to one of the 10" x 21" pieces as shown in the picture below.

Grab the other 10" x 21" piece and attach it to the other end of the 5.5" x 9" piece.

Step 23: Building the Upper Portion of the Body

Picture of Building the Upper Portion of the Body
Now attach the 5" x 9" piece to the other end of the wood and stand up the wood so that the 5.5" x 9" piece is on the lower end.

Then take the 11.5" x 9" wood piece and screw it down to the top of the enclosure ( make sure the 5.5" x 9" piece is on the lower end!!!)

Step 24: Installing the Mini-Fridge

Picture of Installing the Mini-Fridge
Take two L brackets and connect it so that the top of the bracket is 5" above the floor.

Take that mini-fridge and lay it down on top of the L brackets we just put up.

Step 25: Finish Installing the Mini-Fridge

Picture of Finish Installing the Mini-Fridge
To secure the mini-fridge in place use a hot glue gun to glue the sides of the minifridge to the wood.

It should be secured and shouldn't wobble in there. Make sure that you have enough clearance to opne the fridge door.

The mini-fridge should have two black wires coming out from the back. Connect the end of one wire to the positive terminal of the 12V battery and the end of the other wire to the negative terminal. Now whenever the robot turns up the minifridge will be on.

Step 26: Securing the Laptop in Place

Picture of Securing the Laptop in Place
The laptop that I dedicated to Chives(my butler robot) was an old one I had and had a 17" screen. Lay the laptop that you have vertically on the space that is in back of the chassis and secure it with L brackets.

Step 27: Attach the Body to the Plexiglas

Picture of Attach the Body to the Plexiglas

Unscrew the plexiglas cover that we put on the motor enclosure place it on the floor . Now put the wooden box we just built on top of it ( aligning it so that its in the center). Secure the wooden box to the plexiglas using two L brackets.

Step 28: Begin Building the Robot Head

Picture of Begin Building the Robot Head
The robot head for your butler robot can be whatever you want . I decided to make a dome shaped head with one eye. Here are the instructions for the robot head that I made:

Get a 12" diameter cake cover and if its not silver yet , then spray paint it silver.

Step 29: Preapring to Build the Eye

Picture of Preapring to Build the Eye
Now find a soldering iron that you don't mind destroying. ( you can actually just clean it up afterwards it doesn;t really destroy it)Plug in the soldering iron and wait for it to heat up.

Now find one threaded PVC connector ( 1.5" diameter is what I used).

Make sure the soldering iron is very hot before proceeding to the next step. ( don't touch it with your hand , but if you put water on it and see the water vapor then its hot)

Step 30: Making the Eye

Picture of Making the Eye
Hot glue that white PVC piece to the silver dome in the place where you want the eye. Now the soldering iron is nice and hot you need to slowly melt a hole inside the PVC piece you just glued. Make sure you don't melt the actual plastic piece.

Step 31: Attaching the Robot's Neck

Picture of Attaching the Robot's Neck

After you melted that hole in the last step , wet the soldering iron with a sponge and unplug it , letting it cool.

Take some PVC pipe ( I used a 7" , 1.5" diameter PVC pipe) and hot glue it to the bottom of the cake cover as shown. Make sure the PVC is attached securely.

Step 32: Attaching the Webcam

Picture of Attaching the Webcam
Find that webcam that you will dedicate for this butler robot ( I used Quickcam Pro 4000 ) and glue it so that the lens of the camera is looking through that hole we melted.

Step 33: Attaching the Whole Head to the Body

Picture of Attaching the Whole Head to the Body
Now the glue the other end of the PVC pipe to the center of the top piece of the wood platform we made.

Cool head isn't it?

Step 34: Getting the Gripper for the Left Robot Arm

Picture of Getting the Gripper for the Left Robot Arm
The gripper that will be used was taken from one of those robot arm extender toys. Make sure the gripper is motorized.

Step 35: Build the Gripper Part

Picture of Build the Gripper Part
You will also need the following PVC parts , I believe one is called a threaded PVC connector and the other is a 2" length pipe with a piece of plastic sticking out in the back.

Put the threaded connector over the pipe piece and connect the end of that pipe to the gripper. Hot glue the end of the pipe to the gripper.

Step 36: Build the Arm Section

Picture of Build the Arm Section
Now take any piece of PVC pipe that is threaded on the end and cut the pipe around three inches from where the threaded part begins.

Hotglue that piece that was just cut to the end of a different 15" PVC pipe

Step 37: Paint the Gripper and the Arm

Picture of Paint the Gripper and the Arm
Now take both pieces outside and spray paint them black. Use the same spray paint color you used on the body

After its dry you can attach the gripper to the pipe by just twisting the threaded connector on top of the threaded portion of the long PVC pipe.

Step 38: Motorizing the Arm

Picture of Motorizing the Arm
Now take one of the two Power Wheels motors and mount the long PVC pipe of the robot arm to it , using some small L brackets.Use hot glue if you want to secure it more.

Step 39: Mounting the Arm Motor

Picture of Mounting the Arm Motor
Mount the motor to the body using two screws and to secure it further hot glue the back to the wooden body.

Step 40: What You Should Have So Far.......

Picture of What You Should Have So Far.......
If you followed everything correctly you should have a robot body that resembles the one below.Just make sure you got this done and then we will go on to the next steps where we mount the other arm and mount the whole body to the motorized chassis.

Pretty cool , huh?

Step 41: Preparing to Build the Right Arm

Picture of Preparing to Build the Right Arm
Take another piece of the 17" PVC pipe and attach a threaded connector.

Step 42: Paint and Mount the Right Arm

Picture of Paint and Mount the Right Arm
Spray paint that black and mount it to a motor with two small L brackets(one on top and one on bottom) as we did before to the other arm. Use hotglue if needed to secure the arm.

Make sure that both arms are secure before proceeding to the next step.

Step 43: Check Over Your Work

Picture of Check Over Your Work
Your robot's body from the front should look like the pictures attached. A back view picture is also attached.

Step 44: Connect Secondary Motors( non driving motors) To Secondary Battery

Picture of Connect Secondary Motors( non driving motors) To Secondary Battery
There should be two wires coming from each motors. Connect the red wires from each of the motors and connect those red wires to the positive terminal of the 6V battery pack.

Step 45: Connect Secondary Motors to Phidgets

Picture of Connect Secondary Motors to Phidgets
Connect the Negative terminal of that 6V battery to the negative of the 12V battery ( which is common ground) then connect the black wire of the left arm motor to Output #6 , and the black wire of the right arm motor to Output #7.

Step 46: Extend the Wires on the Gripper Motor

Picture of Extend the Wires on the Gripper Motor
Solder on wires to the existing wires connected to the gripper and connect the red wire to the positive terminal of the 6V battery and the black wire to output #15.

Step 47: Modifying the Pouring Servo

Picture of Modifying the Pouring Servo
Open up the servo for pouring and solder on longer wires to the motor terminals. ( the red and black wires pictured)

Step 48: Attach the Pouring Connector

Picture of Attach the Pouring Connector
Attach the connector ( which is a rim of a toy wheel) to the axle of the motor using

Step 49: Attach the Servo's Connector to the Bottle Holder

Picture of Attach the Servo's Connector to the Bottle Holder
Attach the servo connector to the pipe connector and tighten them together.Then mount the servo the PVC pipe arm of the right arm using screws or hotglue.

Step 50: Glue on the Bottle Cap Opener

Picture of Glue on the Bottle Cap Opener
Hotglue the motorized wheel to the bottle holder on an angle so that the wheel brushes against the cap of the bottle.

Picture isnt showing for some reason , so the link for it is here:

Step 51: Extend Wires on Bottle Cap Opener

Picture of Extend Wires on Bottle Cap Opener
Solder on longer wires to the motorized wheel . Connect the red wires of both the servo motor and the motorized wheel to the positive terminal of the 6V batttery. Connect the black wire of the servo to Output #8 of the Phidgets. The black wire of the motorized wheel should be connected to Output #9.A cup can be attached on a L bracket if you want to add one.

Step 52: Check it out!!!!

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Fasten everything down to the body and double check to make everything is in order . Now look at your butler robot, pretty cool isn't it?

In the next steps we'll give it its intelligence.

Step 53: Introduction to the Software

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The software that Chives runs off was created in Visual Basic 6 and makes heavy use of Microsoft Vista's Speech Recognition Tool.

The minimum laptop requirements for the butler robot are as follows:
1. Runs any version of Windows Vista
2. At least 512 MB RAM
3. Two USB ports
4. Wifi Adapter ( Built-in or USB)
5. Speakers (Built-in or USB)

You will need to install/ setup the following programs and drivers:
1. Microsoft Visual Basic 6 ( if you want to edit and run the butler robot's program)
or if you want to only run the butler robot's softwareinstall this runtime fileinstall this runtime file
2. Setup Microsoft Vista Speech Recognition
3. CCRP Timer Object
4. Phidgets 21 Installer Package
5. Free Voip Calling from Robot
6. RoboRealm

Step 54: Verify Connections

Picture of Verify Connections
After installing everything verify that the Phidgets Interface Kit Outputs are connected to their appropriate components. If something is wrong then just make the proper connections.

Output(0) = Relay for Left Motor to turn forward
Output(1)= Relay for left motor to turn in reverse
Output(2) = Relay for right motor to turn forward
Output(3) = Relay for right motor to turn in reverse

Output(6) = Left arm motor
Output(7) = Right arm motor

Output(9)= Bottle Cap Opener motor
Output(10)= Bottle tilter

Output(15) = Gripper Motor

Step 55: Downloading the Code

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The code can be downloaded from this page . Just download it , unzip it , and run the self installer .
Be sure to read the description in the self installer - it has important information.
This is version 1 of the code. Look on my blog ( eRobots.BlogSpot.com) for the most updated version.

This code has the following features:

Voice Control Over the Following:
1. Drive in all four directions - distance in "units"
2. Speak the Current Time
3. Speak the Temperature in Your Area
4. Speak the Weather Conditions
5. Pour a Drink
6. Raise Right Arm
7. Raise Left Arm
8. Close gripper
9. Various Sound Effects ( gun shot , load gun , laugh , etc.)

Text to Speech Warning of the Following:
1. No internet connection
2. Low Battery
3. Being Remote Server Operated now

This code is a stable release . My program with Voip and Roborealm interface has some bugs , so I'll only release that when I get all those bugs worked out.

In the next few tutorials I will be explaining parts of the code so that you will be able to edit it to your liking.

To run my program do the following. Launch Vista Speech recognition and get it out of sleep mode and have it listen. Then launch my program . Now speak the commands and Vista Speech will click the commands that are in my program.

Step 56: Explanation of Subroutines and Functions

Picture of Explanation of Subroutines and Functions
I have included in the code a lot of subroutines and functions to make the code easier to use and easier to understand .

Here is a list of the major subroutines and functions

1. Speak
The Speak subroutine will play the sound file which is specified . All sound files must be in the "Voice" folder in order to play.
The syntax for the Speak subroutine is : Speak (filename as String)
ex: Speak "File1" - this will play the sound file "File1.wav" which is in the folder "Voice"

Note: For variables such as weather conditions make sure that the proper sound file exists for the condition.

2. Pause
The Pause subroutine will as it's name implies pause the code for a certain amount of milliseconds.The Pause function uses the Sleep function( a Win32 function) , but before sleeping it makes sure that all prior commands were fully completed.
Syntax for the Pause subroutine is : Pause (milliseconds as Integer)
ex: Pause 2000 - this will sleep for 2000 milliseconds a.k.a 2 seconds

3. Drive
The Drive subroutine is responsible for controlling the drive motors. The subroutine requires two variables to be filled in order to work. The two variables that it relies on are strDriveDirection and strUnits. strDriveDirection is a public variable because that way the direction can be set separately and in a different procedure than strUnits.

strDriveDirection tells the subroutine which drive relays to activate and strUnits tells the subroutine how long to activate the relays.
Syntax for the Drive subroutine is:

strDirection = (direction as String)
Drive (milliseconds as Integer)

ex: strDirection = "Forward" ' set the Direction to forward
Drive 3000 'Drives for 3000 milliseconds or 3 seconds

4. Get_Time
The Get_Time public subroutine returns the current time in a variety of variables. It has the ability to separate the time into the singles and tens place, set the time to 12 hour time, divide the day into AM and PM, and even divide the day into day phases(e.g. afternoon).

The syntax for it is either Get_Time or Call Get_Time

It returns the following public variables:
strDayDivider - this is either AM or PM
strHours - the amount of hours in 12 hour time ( maximum is 12)
strRawHours- the amount of hours in 24 hour time ( maximum is 24)
strRawMinutes- the amount of minutes ( double digit)
strSinglesMinutes- the amount of minutes in the singles place only ( single digit)
strTensMinutes- the amount of minutes in the tens place only ( e.g. 30 , 40 , 50 )
strDayPhase - either "Morning" , "Afternoon", or "Night"

5. Get_Weather_Info
Gets the weather information( temperature and conditions) and returns public variables.

The syntax is either Get_Weather_Info or Call Get_Weather_Info

It returns the following public varables:
strTemperature - temperature in degrees farenheit ( double digit)
strDegrees_Singles - temperature in the singles place only ( single digit)
strDegrees_Tens - temperature in the tens place onle ( e.g. 10 , 20 , 30 , 40)
strFeels_Like - feels like temperature in degrees farenheit ( double digit)
strFeels_Like_Singles - feels like temperature in the singles place only (single digit)
strFeels_Like_Tens - feels like temperature in the tens place only (e.g. 10, 20 ,30)
strWeather_Conditions - the weather conditions outside ( can be anything from herehere )

There are many other minor subroutines and functions , but the average user will not need to use them .

6. HighOutput
This subroutine sets the assigned port number a logical high or on.

syntax HighOutput(portnumber as integer)

ex: HighOutput (9) - Turns on Output 9 of the Phidgets

7. LowOutput
This subroutine sets the assigned port number a logical low or off

syntax LowOutput(3) - Turns off Output 3 of the Phidgets

Step 57: Videos

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Here are a bunch of videos demonstrating the butler robot's abilities.

Step 58: Updates

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For updates on my butler robot project check out my blog

This project can be very dangerous if you are not careful. Be careful and scared of your tools. Do not do anything stupid which could be dangerous to your health . I am not liable for any injuries, death, or any damage that might have occured by following this tutorial.

Also , you should be afraid of your robot . When this thing is on , it has a lot of torque and its probably stronger than you and can push you over and run you over.

Amazing project

AndreaC111 months ago

this amazing but if you could make it so it would do all your chores and clean the house it would be even better

Amazing project

Can you try updating it so that from the hands he shoot that can can be used as serving plates or something like that

I realize I am a bit of a late-comer (If 3 years is considered late), and I recently discovered this project while browsing robotic videos on YouTube. I have to say, this project is MARVELOUS! Fabulously explained, and a very innovative idea! A truly amazing project.
monkeys982 years ago
It actually reminds me more of gadget gadget from the waters of mars.
hmiddendorf2 years ago
How fast does he go?
bmclaury3 years ago
hantly5 years ago
 where can i get one of these? would one of those proper robotic arms work like this one if not where can i get one of them and is there a way of making the arm bend? other than thatg this robot is awsome i want to make it so bad and add a few twists :P :) (if i can lol)
my images.jpg
bmclaury hantly3 years ago
Jameco Electronics

I used to own something similar to that when I was young. It was called "Super Armitron." Its really just a toy. The gripper arm was very weak and very slow. It was tons of fun for playing with action figures, but not much for real gripping. However I imagine you could probably rig it up with some stronger parts if you were clever enough.

You can probably still find them either online or at a science/discovery store. As I remember, I got it as a xmas gift and it only cost around thirty bucks or so back in the 90s.
thinkgeek.com i think they sell those arms.
hantly hantly5 years ago
 or is there any way of giving it more of a proper robot arm.so it could do more stuff. please help and how would i add this to the software. thanks. once again great robot!
tesla man3 years ago
Do you think that it would be possible to build a mini one without the fridge and drink pouring?
natedog20083 years ago
he's so cool!
tinker2343 years ago
wow could i add this http://www.keylemon.com/
289poppy3 years ago
I love the whole idea of the project, right now I'm actually deep into the code. Forgive my youthful ignorance, but I didn't see anything relating to the Roborealm program in the VB script? Why is this? Does it go thru something else? An explanation would be really cool, and thanks once again!
Aron3133 years ago
Wish i could make a robot like that!!!!!
kylekosan234 years ago
OMG this is soooo cool u should like make a company and sell them
how long dose it usually last?
Unit0427 years ago
OOOOH! Relays---this has my vote for the contest. Anything that serves beer and has relays deserves a vote!
Erobots (author)  Unit0427 years ago
lol thanks for your vote! I use relays because they are cheap and easily available. I am starting to shift towards MOSFETs because I need speed control.
the base instructions are pretty strait forward. so i give you the title "ace instructor"XD
SimonRawr4 years ago
Hi, I'm planning on building this robot, but I'm wondering how I would program the code/voice controls on a Mac. Thanks!

And also, do you control the robot wirelessly with your laptop? Or is the laptop mounted?
Sgt. Cookie4 years ago
What are the minimum laptop/computer specs this thing needs?
I knew it you use roborealm for voice commands a used to do that to make my computer tell me stats about its imune system you add buttons and the win vista or win 7 voice recgnition does the rest
mwagner634 years ago
What is the difference between the relay battery and the motor battery?
sharkking4 years ago
question: you mentioned automatically avoiding obstacles, where is that? I don't see any mention of it throughout the tutorial
Omni DIY4 years ago
Awesome! This has really inspired me to make a butler bot of my own. One thing I was interested in that you mentioned was self-docking to a charger. I don't know if I just missed it in my excitement, but I didn't see it. What step is it mentioned on? Thanks for the awesome instructable!
D5quar34 years ago
It reminds me of the robot in Rocky the movie
wmanidi5 years ago
You won. Wheres the new robot?
demonsonic15 years ago
 I have a few suggestions for your robot. You should program him to follow and to come when you are in another room. And maybe add a servo to let his head turn.

Thank you for your cooperation.
hantly5 years ago
 what rpm and voltage are you wheel chair motors??
Fashim5 years ago
This is an even cooler invention then Toast. Like seriously id make one in the future that can walk up the shops and buy me a drink

it would be even better if it had a toster.  :p
Fashim Fashim5 years ago
Im probs gonna make this but im gonna call it Wadsworth and it should have to voice of wadsworth in Fallout 3
Could this robot interface with any of the chatbot programs available through jabberwacky or the like? I just wonder because if a chatbot interface could be linked into a voice recognition and speech to text (and viceversa) program, wouldn't it possibly be a mock conversationalist?

By god I love this site. Found it today at work and I've been on it pretty much all day since getting home. I hope to start construction on this and/or the Doctor Who K9 unit in the next year. It'll be my first venture into robotics, but I'm good at following directions and not afraid of failure. Thanks for building this and thanks for putting up this instructable!

Please feel free to hit me up with any advice as I'm the newest of noobs to such things.
I've just started with electronics and can't wait to get into it. i love the idea of a K9! let me knoe how you go with making him?

my first project will probably be a sonic screwdriver.
fatboy1066 years ago
http://www.maplin.co.uk/Search.aspx?menuno=86022 would the second two laptops work or do they need windows vista?
since it's VB it should work just fine with anything windows that can use the Visual basic studio. In other words, most likely, providing they don't use CE (your link is out of date now) If you can find a compiler it should also work in Mac or Linux
hantly5 years ago
 none of the windows visual 6 software will install on my comp. i have it running vista! you did say that you need a comp on vista but on microsoft it just says windows 2000 and windows xp and a few others but not windows vista please help!
Omni DIY5 years ago
 Awesome! Somethings that might be cool to add:

-swiveling head for use with remote control.
-speed settings for movement.
-slower pouring of beverage so it doesn't spill.

This is by far one of the coolest instructables. Great work!
lane295 years ago
good idea
Ebay5 years ago
very clever design, I like it.
masterpj6 years ago
can it peform tasks on its own???
and i dont really see it cleaning and such in action.
and plz can you make a modified instructiable without mini fridge and with 2 robot arms and no arm for beverage.
and maybe 4 clawed arm so it can really interact with more things and then i can help you.
(i am not technical with hardware you know)
but i am with software.
so i can make it like search for cola and really fill your glass with grabbing the bottle and more cleaning and assisting.
the minifridge could be an automated storage for the butler robot (chives)
so when he needs something he can open the door.
and then grab something out (that might be hard)
but can you plz i mean plzzz

provide an slight modified instruction on how to make a slighly more advanced arm plzzzzzzzz
then i swear i would help you with all i can.
(i have a lot of free time =D )
Erobots (author)  masterpj6 years ago
I've added a bunch of stuff to him just I am not in the mood to document it tutorial-style. I'm in the middle of a lot of projects , and I expect to sell versions of Chives ( that do functions that you said) late next year. The purpose of this instructable was to show how to make a butler robot for beginners
JohnJY Erobots5 years ago
I'm extremely interested in robot engineering, but I have problems with simple basics. This instructable is very helpful, and at the moment I'm interested in micro sized bots, I believe his id is mickey77, yet I can't build any thing that doesn't come from a kit with instructions. I also wish to build a bot from scratch, like homemade motors and circuits, but don't seem to have luck with that. What help could you give me?
nice thanks.
and i understand why you dont want to do a tutorial style one XD :P
its so much to type and discribe.
but well if you have time you could make a small explanation (not a full new tutorial)
but an add on tutorial witch is made in a new instrutables tutorial where you just say the steps number and just say what you could do instead.
because if you modify or improve the arms of the robot butler, then the value and the interactivity and usabilaty and (LOL) it can peform more help tasks.
if you could only add that than i would be happy.
(and well i ment a very small improvement.
just an extra servo in the arm witch could bend the arm so it can grab things from different heights easier.
i would recommend 2 servos on the arm of the robot.
(close to each other)
one for up and down movement.
and one for right and left.
then i could help with programming.
but the only program if i would try this is the controll hardware.
where the servo should be attached to and how to communicate to it.
well strapping some wires to the serve and making the inside the tube of the arm or against it isnt that hard though XD

well i would like to participate help or maybe even suggest idea's
since i got alot of them =)

and i could help on the software if arm improvement has been done.
so it can really pour drinks from the table.
and just take a broom or vacuumcleaner and use it to clean :D

and just control anything you want.
well and with hardware. i can help you improve speech recognition (i am a vista expert :D )
(microsoft really likes my help and beta testing ;)
poparoo45 years ago
Oh yer and what made you call it chives?
poparoo45 years ago
This is so good, the amount of effort and time you must have put in must have been amazing. This has got to be one of the best instructables out there!
Very awesome, but you should have put him in a tuxedo :)
Hi! wonderful bot you've got there! okay now i'm going to try and replicate that..only that i don't want to buy the Phidgets buy i want to build a circuit myself ..any suggestions? can you guide me as far as the circuitwork is concerned? also ,i'm afraid i cant afford to let my budget run so loose, in fact i've got a laptop. so can u tell me, where i can cut down my costs? Thanks! DO reply soon!
This is amazing! I gave it five stars, and voted for it in the book contest. I would love for the world to have more servant robots to do stuff for me so I don't have to. Could you use a segway or winget as a base for the robot? I guess that would cost a lot more. I also think humanoid robots are cool, but not very practical for the price. Could you make an autonomous version?
Erobots (author)  cantthinkof bettername7 years ago
thank you! I could definitely use a segway as a base , but cash is my problem right now I am actually working on a giant mech for me to ride on right now , and if that goes well then I'll add it to Chives . I might make my own self balancing robot base and add that to Chives as well. Chives has some autonomous features like obstacle avoiding and following red shirt people , but due to lack of speed control it needs work. Humanoids are definitely not cost effective , but they are really cool. I am developing a newer version with tracks and speed control , that will be finished like next year. Nice to see people interested! Have you any experience in robotics? ,Eric
Dear Sir, can you please tell me how you have used the ccrp timer objects. i have downloaded it but cant understand how to use it with visual basic. I will apprecitae it a lot if u could tell me how to Install it. I will also appreciate it if you could explain how you have used robot realm. Thank you
Daer Sir i am a 1st year mechaical engineer and this is the my 1st project. I saw ur website and decided to build my robot. i have completed the ost of the mechanical part. But I have doubts regarding the software. How can I figure out how to use the software and install it I tired unstalling it bt could not figure out how to do it. Ive spent like all the money I earnt frm partime jobs over a period of 8 months on this project . I will really appreciate it if u colud give me some tips about hw I can use the software effectively.
Not really. I have always wanted to build one, but it would be really expensive. I made some of those Lego robots before and some very simple kits. How much processing power does a robot like this need?
Erobots (author)  cantthinkof bettername7 years ago
I could really run this robot on a microcontroller but I chose a laptop to make it easier to program and to do remote control over Wifi. If you have interest in robotics look at SocietyofRobots.com/robotforum I am a member there and they answer your robotics questions in detail and quickly.
ir remote control?
well I just thought that you wouldn't need the screen on the robot, so you could save weight and expense. the cherrypal computer uses only two watts and weighs ten ounces and costs $250 and has wifi. I will go to that website now.
Erobots (author)  cantthinkof bettername7 years ago
also another option to the cherrypal is the EEE PC , which is only ~50 dollars more but has a screen and built in wifi , and built in battery .
Oh yeah, I forgot about those.
Erobots (author)  cantthinkof bettername7 years ago
well you don't need a computer at all! I told u a microcontroller is fine but since I had an old laptop on hand I used that. Thats a nice find right there !
will4216 years ago
OMG, 58 steps!?!??!?!?!??!!?!??!
a dude6 years ago
that is the coolest thing I have ever seen can i pleeeaase buy it please reply
the dude1236 years ago
can i buy for $450 please reply
hockey66 years ago
Dude that built this robot you are awsome! Do you have a tips to get my parents to let me make the robot?
hockey66 years ago
I'm gone try to get my parents to let me have it. Its just awesome!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Gliucoza6 years ago
i think it is cute. does it have feelings?
footer06 years ago
What is?
I don't know, I'am not really sure... but do you have a progam that can make it say "Bitty Bitty Bitty Bitty Bitty Bitty Bitty"?
Come on!, you never saw the show?. its from like the 80's.
You talking about Twiki from Buck Rogers?
HELLS YEAH! You got it!
Well that sucks. You should make it, say "Bitty Bitty Bitty Bitty Bitty Bitty Bitty" any ways.
lol i saw that
bowmaster6 years ago
For the kill switch can I use a big, bright, glowing button?
You mean the big red button
spiffytessa6 years ago
That is... awesome! I have only tackled basic robotics so far, and this is a longgg way off from that. Keep up the good work!
masterpj6 years ago
aryclic i can answer some of your questions 3. no you need the windows vista speech recognition wich is included in windows vista only (in premium or over) 4. yes you need a microphone for speech recognition or it couldn't hear anything. 7. the webcam is to see feed from your pc what he is doing and is needed for face recognition
arylic6 years ago
Hey really cool robot. I have started building this robot and it looks way cool then yours :p .... But it can't figure out some part of the instructables and here they are please answer then as soon as possible. 1. Can i program my own software using c++ cause i know that. 2. Can you tell me how to connect the phigets to the laptop ? 3. Would windows service pack 3 work ? 4. Do i need a microphone for the speech recognition ? 5. Why did you link to this website internetcalls.com ? 6. what is the robo realm ?and how can i use it with the robot ? 7. What about the webcam what is its purpose ? Please answer my questions.
masterpj6 years ago
oh just to say (sorry for spamming) you should have won the robot. you earnd it more than the others. i voted for you and gave you 5 star rating. my opinion this is the best robot instructables/tutorial ever made :D
volquete6 years ago
nice build! do people ever buy your robots? You make them for about $900(with laptop) and sell them for $4000-$5000! Reminds me of iPods,they build them for $20, sell them for $130. I'd like to build this, but frankly, i don't have the money! If you could, would you try to make a cheaper version?
Let's name it 'the butbot' :) No, just kidding. it's great!
Owenmon6 years ago
how in the world did the walle robot get a higher rateing then this
Owenmon6 years ago
LOL u used at&t text to speech!
Plasmana6 years ago
Great work!
raykholo6 years ago
can u combine this with the serverbot
and small robots

using the small ones as an "escort" or something like that

also, can u possibly make this like a self moving workstation with printer..., cuz i kinda need something like that? ..

Erobots (author)  raykholo6 years ago
yes I could design those and make a custom robot for you If you are interested please contact me through email airman00 at gmail.com
just asking, but thanks anyway
HDM5286 years ago
that could be the next big thing in the magizine "Big Inventions" great job can i get one
Erobots (author)  HDM5286 years ago
which magazine?
mayoom6 years ago
man thats AMAZING ! Great JOB ! i'm really impressed : )
raykholo6 years ago
this is great where can i see the 5000 $ version that u r selling? and once again im into the whole wii thing, so can u use glovpie to map the commands (see my instructable if u dont know what im talking about) hold the wiimote sideways (power button side to the left) and tilt it for the robot to move, and the buttons can do other stuff in the program --- just an idea 5 star work
Erobots (author)  raykholo6 years ago
thanks for the nice words! I am currently not selling versions of my robot anymore at least not for another 6-8 months. I am busy with my other projects and its not really worth it for me to sell butler robots. I like your idea with the wii . I might incorporate it into my bipedal robot that I am working on now.
JellyWoo6 years ago
wait, if this whole build costs $500, then why are you selling them for $5000? btw, you were a runner up in the robo games. good job!
opps, i meant you won second.
Erobots (author)  JellyWoo6 years ago
well thats because you aren't paying for the same robot. The 5000 dollar one looks much much nicer , has custom CNCed parts , and pours drinks better. Plus the 5000 dollar one has a bunch of more stuff that can be added on.
oh. can you post a picture of it?
Erobots (author)  JellyWoo6 years ago
lol its not done yet , but yea I'll post a pic once its done and about to be shipped
JellyWoo6 years ago
it says you need to use wheel chair motors, but i have this old kids electric motorcycle that can be charged. if i take this apart, will it work? thanks
i'll post a picture tomorrow
here it is.
Erobots (author)  JellyWoo6 years ago
that has only one motor inside it and its a pretty weak motor at that .
oh, do you know what i can use the motor for?
Erobots (author)  JellyWoo6 years ago
Those motors are used in the arms of Chives . However if you make everything out of plastic and make everything lighter then those motors will work fine. However they are a pain to attach to stuff ( mount on wheels, etc.)
do you know how heavy chives is?
Erobots (author)  JellyWoo6 years ago
the version pictured here is very heavy , I'm not so sure of the exact weight but I would say around 100 lbs or something. If you use plastic and a lighter battery it will be drastically reduced.
Teh_Fluff7 years ago
nice! voted, 5*s and faved. keep up the good work
edfel017 years ago
holly crap this is the coolest robot i have ever seen!!!!
Erobots (author)  edfel017 years ago
thanks! you know that I am selling versions of my butler robot to the public ... ;) airman00.googlepages.com
OOO a new and improved version can't wait
Ro-Bot-X7 years ago
Hey Airman00, nice instructable! I wish I had enough time to do one too. Oh well, maybe next time!
Erobots (author)  Ro-Bot-X7 years ago
hello thanks for the nice comment!
Erobots (author) 7 years ago
I am starting to sell lighter versions of Chives , my butler robot It has all the same features , but it is made of light plastic instead of heavy wood Butler robots start at around $4000 , price varies with features included. Email me if you are interested airman00 at gmail.com
masterj7 years ago
or this ...http://cgi.ebay.com/Rear-Wheel-Drive-Motors-Merits-MP3C-Electric-Wheelchair_W0QQitemZ260265254320QQihZ016QQcategoryZ19265QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
masterj7 years ago
cooldog7 years ago
hey this is really cool i've been following your projecty on SoR and you have done a great job
Erobots (author)  cooldog7 years ago
hey cooldog thanks for your vote!
masterj7 years ago
very nicely done 5 stars ... now i want to build this so how much do you htink this would cost if i didnt have a single part .... no charger no laptop no minifridge or anything?
masterj masterj7 years ago
sorry ... i just read the first step so now i see...
Erobots (author)  masterj7 years ago
thanks for your vote btw , I would suggest you use a motor driver and not relays like I did. Motor driver would let you have speed control. But motor drivers are more expensive as well... I'm working on a more advanced version of my butler robot as we speak , so maybe you'll wanna wait a few months until that documentation is completed. email me if you need any extra help airman00 at gmail.com
Excellent job! You did an amazing job with this robot! +1 vote 5/5 stars
Erobots (author)  plane phanatic7 years ago
thanks! if you need any help building it , just drop me an email airman00 at gmail.com
Unit0427 years ago
I don't mean to split hairs, but it's revolutions per minute:
Erobots (author)  Unit0427 years ago
you caught me I edited it now, revolutions is more accurate technically I was right though , because rounds can mean "Movement around a circle or about an axis." But you were more right , so I put that in now.
Unit042 Erobots7 years ago
Rounds are perfectly acceptable, I just can't resist stirring up trouble. Heehee. Nice robot, although I would never have the guts to do a built-in fridge. Mine would be more like an R2D2 with flamethrower and explosive self-destruct mechanism. Think: mobile turret and armory.
Erobots (author)  Unit0427 years ago
lol sounds very "safe" I would like to build a cool mech one day... wtih flamethrower but NO self destruct ( why would I want to blow that kinda thing up) :)
Unit042 Erobots7 years ago
Well, the self destruct is to prevent theft. When the robot detects that it's being stolen, it blows up, killing the criminal who would have gone back for more stuff from your house. And it destroys any possibility of "Them" finding any criminalizing evidence inside the robot, er... crack *ahem*... cocaine...*cough*... weapons grade plutonium stash... *The guy next to me said it!* etc.,
but you didn't hear it from me! ;-)
Erobots (author)  Unit0427 years ago
LOL that made me smile an even better way would be to just kill the criminal without blowing up
Unit042 Erobots7 years ago
That would be nice, but then there would be evidence left over, with your fingerprints on it, that just killed a guy! How about ninja star throwing?
Erobots (author)  Unit0427 years ago
I meant have my butler robot incapacitate him , lol
50000 volts should do the trick
*Mischievous smile sneaks upon face, mirroring the equally, if not more trouble making thoughts of the recipient of the above comment's implications...*
Erobots (author)  Unit0427 years ago
hmmm I'm thinking of using maybe a bug zapper on Chives, not to kill just to give a nasty burn and scare people off
Camisado7 years ago
Wow! Very Nicely done! ( although I can't get a thing you said in this I'ble because I'm too dumb, LOL ) And about your spam, I think that it was actually the good kind of spam, not the bad one. And seeing you apologize like that makes me feel that you are a great man. Nice job again. 5 stars, favored, and voted.
nicely done! The voice reconision software runs beautiful! The movement control could be a little better, and the arms are a little imobile, but I really like the phone controllability. It obviously works quite well. Great Instructable!
Erobots (author)  zaro123457 years ago
thank you I'm working on an improved version as we speak . Expect it to be up in about 6 months on instructables
Dude, it's great that you liked his I'ble and all, but why are you posting that comment as a reply to MY comment?
Erobots (author)  Camisado7 years ago
if u need any help email me!
I don't know your e-mail....
Erobots (author)  Camisado7 years ago
airman00 at gmail.com feel free to drop me an email relating to robotics
Erobots (author)  Camisado7 years ago
thank you :)
You're welcome :D
Kopolis7777 years ago
i shall call him jarvis
Erobots (author)  Kopolis7777 years ago
ur making one? cool , post up pictures when its done!
Doctor Who7 years ago
Make a Dalek robot with a working plunger and egg whisk next
Erobots (author)  Doctor Who7 years ago
lol I'll try , I'll try :)
shimniok7 years ago
Nicely done! What I like best about your design is that others can duplicate it without super expensive parts or needing a cnc mill or whatnot, yet it has the power of a full blown pc inside so you could pretty well get it to do anything you wanted. You got my vote :)
Erobots (author)  shimniok7 years ago
yey! thanks btw , I'm making a new website about robotics. I'll send you a PM or an email when its finally up.
Jahoovi7 years ago
dam... great 5
Erobots (author)  Jahoovi7 years ago
thanks tell ur friends to vote for me as well! :)
Jahoovi Erobots7 years ago
alrdy did
Hawaii000007 years ago
Great a job! Very resourceful.
+5 and voted for! I love this bot!
Erobots (author)  botmaster 107 years ago
thanks! Get ready for a newer version of my butler robot in a few months!
Well, im a big fan of chives. may i have the first one?
Erobots (author)  botmaster 107 years ago
lol you are the second person to want him. I can custom make you a lighter version ( same features) of Chives for a couple thousand ( that includes the computer built in and shipping) email me if you are interested airman00 at gmail.com
arerobot7 years ago
COOL!!! Found this through google
Erobots (author)  arerobot7 years ago
Erobots (author) 7 years ago
lol yea if you want to be technical thanks for catching my mistake , I'll edit it now Hope you enjoy the rest of my tutorial!
emuman4evr7 years ago
I voted, that thing deserves a coilgun instead of a water pistol.
Erobots (author)  emuman4evr7 years ago
lol so true I plan to make a newer version of my butler robot with either spider legs or just self balancing. Then I'll add your coil gun.....
so many steps. great job
ac1D7 years ago
i got two SPAM private message from this guy for me to look this page: stop it. spam is bad. i wont vote only becose of that. damn spam.
Erobots (author)  ac1D7 years ago
I realized my mistake , I am new to instructables.

I spoke to moderators and the admins. They suggested I make this page:

Please reconsider.

The Jamalam7 years ago
this is amazing! Did you build this on your own? I voted! Btw, you should set the gun command to opening a door, or breaking a window, that way you can ward off intruders! Feeling lucky punk??? lol
Erobots (author)  The Jamalam7 years ago
thanks! I'm working on a better arm for him , and yes I did build this on my own btw , I'm glad someone liked the feeling lucky punk ( clint eastwood style) joke :)
Erobots (author) 7 years ago
uploaded some video of my butler robot
JellyWoo7 years ago
i might want to make this but what skill level do you think is the project? (easy,medium,hard)
Erobots (author)  JellyWoo7 years ago
if you follow my directions its pretty easy to build I would say medium , because you might need to improvise on some steps if you have sightly different parts then I have.
VOTED FOR! Great robot and probably the BEST instructable ever in regards to your detailed explanations and overall dedication. A project this large would be overwhelming to me for the amount of information you included! My only criticism is that Mr.Robot isn't the most aesthetically pleasing robot ever, but really, who cares when it does so much!!? :) 5/5 Best of luck!
Erobots (author)  randempedestrian7 years ago
thank you for your vote yea the robot doesn't look that sleek , but I'll probably make a revised version soon. I'll make it on tracks and I'll probably CNC a body ,instead of the crude wood I used. Tell your friends to vote for me! i promise that if I win this contest , I will have the revised "cooler" butler robot finished and fully documented by June 2009 , where I will enter that butler robot into RoboGames. But if I don't win .... there isn't any robogames, now is there. Thanks!
Ha4xor4life7 years ago
name your price
Erobots (author)  Ha4xor4life7 years ago
price for what? you want to buy this butler robot off me? if you do , please email me and we will talk ; airman00 at gmail.com Please vote and rate this instructable as well!
Erobots (author) 7 years ago
Uploaded all the code.......
taylor1797 years ago
I voted for you and this is one of the best instructables ive seen!!!
Erobots (author)  taylor1797 years ago
thank you!!! tell your friends to vote for me too!! I promise that if I win 1st or 2nd place in this contest I will improve my butler robot even more and document it ! I will even add tracks! This is a promise and I always hold up to my word.
JellyWoo7 years ago
how much did this whole thing cost? (besides the laptop)
under $500 US dollars (see 1st page)
TheInventor7 years ago
Oh my GOD! Great work!!! Would you mind if I Build a mini one and put it on instructables? I'll credit you if I can. Anyways... +1 Added to favorites VOTED FOR!
Erobots (author)  TheInventor7 years ago
I would not mind at all! Just please credit me for it and link to my blog erobots.blogspot.com Ill be happy to help out with it . Contact me at airman00 at gmail.com
whackpak7 years ago
this is very impressive!!!
Erobots (author) 7 years ago
The bill of materials is Step 1


Erobots (author) 7 years ago
thank you all for your nice comments!!!! also, if anyone has any ideas for any commands or just some greeting the butler robot should say OR if you just want to chat about robotics , drop me an email airman00 at gmail.com Right now he can drive by voice command, tell the time, the weather , weather conditions , and do some sound effects by voice command.
joey25426677 years ago
that is, by far, the best robot I have ever seen on Instructables! seriously, who else would take the time and money to make a robot, take pictures of the building process, and make a 52-step Instructable and not get anything out of it? to you and your robot, I take off my hat.
Erobots (author) 7 years ago
uploaded it now!

get ready for the code and videos guys , that will be up this weekend.

Code maybe even tonite , it just takes time to write some documentation clearly describing my code.


and thanks for the vote!
thanks for the feedback as well

Erobots (author) 7 years ago
hey guys,

I'm typing up the bill of materials as I speak .

i'll PM you when I am done


There will be some more steps ,lol , explaining my code
how much longer do you think you'll be? (just asking, no rush)
taylor1797 years ago
I' definitely voting for you!!! this was a great instructable, Great Job:)
=SMART=7 years ago
Very cool robot, looks like a nice dalek :P 51 steps is very impressive!
Kaiven7 years ago
omg thats alot of work! +5
taylor1797 years ago
yah I was wondering the same thing