Need help

Looking for help with my new project. I want to power my mechanical arm using hydraulics.  I would prefer to use a joystick controller.  I want this arm to be able to hold a hedge cutting machine. The arm will have the same freedom of movement as a human arm. Eventually I want to use this arm on a machine such as a bobcat or similar device. For now I just need to be able to power this arm and then I can go from there. Anyone up for a challenge???? Dave Sender my E-mail Please see the photo of the size of the arm I'm looking to power.

Posted by davesender 3 years ago

looking for help fabricating a mechanical arm for use in the construction industry?

I am looking for person or persons that posses the ability to help me build a mechanical arm. I need help with the computer hardware/ software end.  The arm will be used to hold a power washer hose.  Many applications I want to use it for. Endless possibilities.   Are you up for a challenge?  I live in NY but will travel. Dave S.

Asked by davesender 3 years ago

vision integrated haptic arm? Answered

Please help me with my project. i have 1 d.o.f robtic arm controlled by potentiometre and aurdino nano. i want to know whether i would need two other microprocessor for vision integration of my robot. or  can i use my nano itself for vision. i am instructed to make a arm which recognises object and picks up.please suggest me about boards,codes to use. 

Asked by bharathi1607 10 months ago

Dutchj's experimental K'nex side-arm

Having finished my rifle and finding myself with nothing to do ( Don't worry, it will still be posted this week ), I thought I'd finally have a go at side-arms. So I built the TDS2, and hated it ( I'm going to get bashed for that, I know it ). I decided to have a look at some others like Oompa-Loompa's unofficial side-arm, and the one Bakenbitz posted a picture of on KI some time ago. Afterwards, I came up with this. This side-arm is powerful because the magazine is at the front and the trigger is at the very back. It's also kept reasonably small because the magazine is inside the handle.It fires grey connectors. It's a bit clumsy, but it is only a first version. I can probably make it a bit smaller and more user friendly if I remake it. Tell me what you think, and as always, constructive criticism is more then welcome

Posted by Dutchj 9 years ago

Where to find parts for building telescopic articulating arm?

I am not exactly sure where to ask this.  I have about a 3-4 foot articulating camera arm, which I use for a completely different purpose (medical related).  It is great at what it does, except it is very difficult to precisely adjust it.  I have not seen anything that will do exactly what I need, but it would look somewhat similar to that type of articulating arm.  It would need to have two telescopic sections plus one or two articulating joints.  I think I would need to find each of those sections separately and then put them together myself, because I have not seen arm with that precise configuration of sections, and that is as lightweight as what I need.  Where should I look for such kinds of parts?

Asked by dmehling1 3 years ago

arm based computer

Can some one make an instructable for how to set up a usable arm based linux machine?

Posted by clasic_traveller_diehard 9 years ago

Robot arm help?

A while back i saw an instructable that was a wooden robot arm it had a main arm and a second smaller one. the smaller one had a handle that allowed you to move it. you moved the smaller arm to program the larger one. anybody know what i am talking about?

Posted by pattyshaw 6 years ago

I want to make cushions for the arms of a chaise lounge

I have terry cloth towels and foam pieces cut to the size of the  arm rests of the deck chairs.   I would like to fasten them on to the arms with velcro.  I want to be able to take the foam out to launder the terry cloth.

Asked by menno55 4 years ago

knex side arm list

This the list of knex side armstrauts side armtds or the dunkis side armloosewires slide action pistolflie-ing goose side armdsman195276's side armtd10 a mod of the tds made yet again by thedunkisOTTG1 by OblivitusP 2000 by the one the only ironman69TheDunkis's Mini-er TDS lol loads of mods for the TDSOKP K'nex Mini Pistolthe TDS2 a major mod or overhaul of the TDSdj radio's 357 knex pistoldgm's mesIf you want your side arm posted please comment the url and the name you want it posted as.Also if you don't want your gun posted up here message me and i will take it down.

Posted by knexfan9182 9 years ago

Craftsmen radial arm saw?

Hello all does any one have the diamensions of the table pieces for amodel 113 radial arm saw got my dads old saw in graet shape but table is gone  plaese let me know

Asked by sparky9030 5 years ago

looking for robotic arm constructed out of legos with three finger gripper and thumb used in under water contest

I'm looking for the robotic arm constructed out of legos with three finger gripper and thumb used in under water high school contest.? It was controlled with an IC off a Breadboad.

Asked by wschmidt 6 years ago

why do i not have much leg/arm hair?

i am 14 years old and have minimal leg/arm hair i do have some but not much is there any reason?

Asked by mysteryman127 8 years ago

How can I make to arms move towards each other with high precision and a single motor? Answered

What I would like to do is have two "arms" side by side both starting at 90 degrees (Figure A), and then have them pivot inward until they touch at the tip (Figure B), but I need to be able to precisely control their angles, use a single motor, and the base of the "arms" cannot move. Does anyone know of a way this can be done?

Asked by geekman2 4 years ago

how would you build it? Answered

How would you make a base and basket in front of the armfor an armatron  robot arm out of knex

Asked by knexinventer 7 years ago

Does anyone know where to find a replacement part for an antique platform rocker?

I have an antique platform rocker that I need a replacement part for.  It is a cast iron arm at each end of a wood spindle.  Looking up online I found it may be called the "Lowentraut mechanism" and was designed in the late 1800's.  The rocker I have is in good shape but only has one of these cast iron arms and I am trying to find a way to get a 2nd one to complete the rocker and refinish it.  I am attaching a photo of the one arm that is on the rocker.  Any information on how to find a replacment part would be appreciated. 

Asked by artzyyfartzyy 5 years ago

How I can control 6 stepper motor with arduino uno rev3? Answered

I would like to control 6 stepper motors using an arduino uno rev 3, in order to prepare a robot arm with 6 grade of freedom

Asked by fdolopez 5 years ago

Tentacular awesomeness pushes limits of body image

From The Design Blog, via NOTCOT: Pushing the boundaries of current upper-limb prosthetic design, designer Kaylene Kau has created a prosthetic arm that supports the dominant functioning hand in accomplishing day-to-day tasks with ease and efficiency. Featuring a flexible design, the prosthetic arm adjusts to allow a variety of different grips to hold a variety of objects with minimum fuss. The Prosthetic Arm also integrates motors and cables, which help the user control the amount of arm curls required for different tasks. Presenting a simple yet effective design, the new prosthetic limb makes users self-reliant, as they can carry out their everyday tasks without any assistance. Of course, any advances in prosthetics is welcome, but I bet the first thoughts of most people reading this here were either Cool!  I could be an octopus! or Woah - I want one of those on my next Hallowe'en costume! I'd really like to see a video of it in action - I can't decide if it would be cool or creepy. I also imagine that an arm like this would be (relatively) easy to engineer for the amateur.

Posted by Kiteman 7 years ago

Help with 6DOF robotic arm?

Hi, I am building a 6DOF robotic arm for my final school project and i need you help I have an arduino and i have to run 6 servos with it i have a joystick shield on my arduino and was wondering what the best way to power the servos is. Should i get a servo shield, or seperate board? Also i have a 360º servo in the base and when it spins left it instantly stops when i let go of the joystick but when turning right it does stop but it stops smooth. I thank any help you can give me and english is not my first language. PS.: if you want i can send pictures.

Asked by Miguelc1 2 years ago

Is this normal?

The veins in my arms (a ton in my right, a lot, but not as much, in my left) bulge a ton, even if I'm not doing anything. While typing at a desk they look fine. Just sometimes out of knowwhere they just bulge, I might not even be doing anything that requires effort!. Is this bad? It doesn't hurt, it just looks weird. I don't work out (mind you I'm not that weak either, I'd call myself average), I weight about 100 pounds (I know, I'm light), I'm ~5' 4", and I'm 14., and I'm skinny. I'm Eurasian (half korean, and half white stuff like german and welsh, etc.). I find this really weird cause 2 of my friends are really strong, but they don't have the weird vein thing (they're skinny too). My arms are pretty thin, like I can wrap my thumb to my middle finger around my arm (about halfway inbetween my wrist and elbow, maybe a little more) More that I think about it typing bulges my veins, I'll post pictures of my right arm soon, it's freaking me out. Soome kids in my school are like "cool, how do you do that." Some girls are like "eewwwww" when they see my arms, but other don't seem to notice it. Bottom line, is this good, bad, should I be concerned, etc.

Posted by guyfrom7up 10 years ago

HELP?! I need some advice on chair restoration!

I have spotted this chair in a charity shop, I have been looking for a similar style to this for my flat to restore/up-cycle. I plan to either have the cushion restored or to recover in a soft furnishing for a different look However... I am a total novice to this kind of this so I was just wondering: 1. What I should pay for a chair like this, in this condition? 2. How much would it cost to reupholster both DIY & by a professional? 3. How much it would be worth when finished? Any help and advice given would be much appreciated, as I really am unsure! Thanks!

Posted by beccajames7 3 years ago

how do i make a cover for the arms of my recliner?

I am needing covers for the arms of my recliner. I use to have the pattern, years of moving around i have lost. Could someone please help? thank you debbie

Asked by debbiebruff 8 years ago

Does anyone know how to make an electronic robotic claw or arm easily?

Robotics have always interested me, but I have not known how to make any simple robotic claws or arms. Please give me some good instructions on how to make an electronic robotic claw or arm.

Asked by 9 years ago

does anyone know how to make a robotic arm with easy to get materials?

I have always wanted to make a robotic arm but lacked experience ansd supplies to do so. If somebody could show me how to make one easily, with easy to ger materials, I would be very gratful.

Asked by 9 years ago

Can I write a program that my OWI robotic arm edge will understand?

I am a student, I am suppose to program my OWI robotic arm edge to reconize flowers. We picked the CA poppy as our flower of choice, we purchassed a uCAM camera, we are writing a C++ code program for how to move around on a 24 inch board. When we are done with our program, is there a way to get the program to work with the OWI robotic arm edge? Thank You for any help! 

Asked by max76 6 years ago

Spring Loaded Arm Blade without Drawer Slide

Can anyone help me with instructions on how to do a spring loaded hidden arm blade without using a drawer slide? Looking for something a bit more refined. Also, I am looking not for it to use as is, but to spring out the blade and then be able to grasp it with hand and remove it to use. So I guess, more of a spring loaded holder for a knife, because really, trying to use an arm blade like this to do any real damage in an actual fight, would be difficult. Thanks

Posted by jscott14 5 years ago

The gun retractor thing from 'Taxi Driver'?

The one De Niro attaches to his arm that springs the gun into his hand

Asked by 9 years ago

can my left arm get recovered from my stroke what ive had?

 i have had a brain hemmaradge and a stroke when i was 11 and my arm has got a lot better since then . im now 13 and i need some advice for some things what can help it get better. can anaybody plz help if you want to talk on msn hers my addy thanks for listning to this plz plz plz help me.

Asked by kray953 8 years ago

Building a robotic arm?

In Science next term, we've been told that we'll need to build a robotic gripper. All it has to do is pick up a cup. I've been having a look around, and the balloon idea isn't practical because if the cup was full it wouldn't work. And I'm okay with spending a little money, but I'd rather not spend $100 or anything on a kit. So what's a good idea for me?

Asked by im_caius 5 years ago

What battery should I get?

I am building an arduino robot arm and I need to power a total of six servos. What size battery should I get to power the servos?

Asked by martzsam 5 years ago

Anamatronic servo help!

I'm building a basic anamatronic arm, and I need help in the land of servos. I am pretty much new, so could someone explain to me what oz. inches are, and if possible, reccomend arduino- compatible servos? Thanks a bunch! 

Asked by Mr. Jimmeh 5 years ago

How do I start programming the STM32VL-Discovery?

Hi there, I've just recieved a free stm32VL-Discovery, but the website of ST doesn't do any good. I know a bit AVR programming with an arduino, but I know sh*t about ARM or the STM32. If anyone could tell me how to adress the pins it would be a nice start..

Asked by woutervddn 7 years ago


Well, I finally got around to making a sidearm. Largely based on TheDunkis' new oodammo AP. Instructions -

Posted by bakenbitz 9 years ago

Does anyone know how to program a repetative motion robot (see description)?

This is mostly out of a theory and curiosity, but if I were to make a robotic arm and I wanted to make it do repetativve motions, how would I make It recognize/remember the movments and how would I make it perform them. It would be a direct teaching unit (meaning I would move the robot and it would remember the movments) so how would I make it run or hook it up to a computer and how would I program it with the direct teaching. If this impossible or extremeny difficult, please recommend a different technique. Please give me good, detailed instructions.

Asked by 9 years ago

robotic arm arc welder

Is it a robotic arm capable of arc welding feasible for a diyselfer ? I spotted some robot arms for cheaper than 200 $ over the web . Vantages for the operator would be no weld fumes breathing , no uv rays and such ..

Posted by gabdab 4 years ago

I need help with an Intel edison robotic arm

I need to know what kind of acuator I should use to move the top arm 

Asked by jOker58 2 years ago

How can I make a fake third arm? so I can use my real one for a puppet?

I want to make a fake right arm so it looks like i'm holding a box. I have a gimmick right hand. I just need advice on how to make the rest of the fake arm look realistic. It also has to hold the weight of the box as I need my real right arm for a puppet and my real left for juggling balls with.

Asked by Lost-it 6 years ago

Knex Side arm

I'm looking for a easy to build knex gun that has a mag that don't jam easily and uses NO Yshaped connectors or 'HANDS". Post a link or write the URL PLZ PLZ PLZ PLZ PLZ PLZ

Posted by alfpwns 9 years ago

I want to start using ARM processors. Which one should I start with?

It's been six years since I first learned how to use microcontrollers (on this very site!) and I think I'm ready to delve into the wonderful world of ARM processors.  I've heard a ton of awesome things about them, including their reduced cost, high clock speed, usb connectivity, large memory, 32-bit cores, more I/O's, reprogrammable pin functionality, and some of them can even run linux! Unfortunately, I'm blind to the spectrum of arm.  What's a good MCU to dive into the sea of arms with, and why? Thanks I'bles! -muffin

Asked by T3h_Muffinator 6 years ago

Looking for project parts

I need to attach an arm to the end of a stepper motor shaft that I will then use to rock a babies car seat. Finding an arm (or horn) is turning out to be more difficult than I thought. Does anyone know a place to pick up stuff like that. The shaft is 5mm Thanks

Posted by dlouche 8 years ago

New Side-Arm DMTD (name pending)

Well some of you might have heard dsman and I are making a new side arm mainly by combining our side arms and then adding even more features. Some things we (well I) plan on -Stronger and just as reliable as DMS -Small and as comfortable as TDS -Removable magazine -Slide -A new feature I'm working on. Adjustable site for aiming at distances. So yeah we decided to team up because I honestly just got tired of competing with dsman. I have some questions for you though What ammo do you want us to use? We are leaning towards dark greys. Also what other details do you want? Such as what kind of trigger (true obviously) and also do you want it to be detailed like the gun down below or do you want it to be straight forward like the TDS? Give me any other features you want. This gun isn't what we are working on...yet. We might use it as a base. For anyone curious this gun is my newest version of what used to be the D. Falcon from the video comparing our side arms. It was what I was working on to beat both of them. This is mainly for the concept removable magazine I'm working on.

Posted by TheDunkis 9 years ago

Torsion spring resource wanted

I am going to build an arm to hold a tv that will hang from the ceiling. It will be approximately 52" for pivot to CG. As I am a teacher it will be an old fashion heavy CRT (prolly around a 25" tv)rather than cool wazoo light weight flat screen. I am looking for an appropriate torsion spring to take it from hanging to pinned up against the ceiling. I know about garage door springs but can't figure a way to retemper the spring after I cut off a few coils and bend an end so I can use it. Any ideas you may have to come up with a spring (canabalized is fine) or a retempering process would be appreciated! Thanks! Mikey

Posted by Mikey D 9 years ago

Got my Raspberry Webserver running - what to do now?

See my Setup here: Now i would like to know what else i can do to improve it (both, setup and website) thanks already

Posted by miicchhii 5 years ago

want help with a possible future steampunk instructible

okay, so i want to make a steampunk contraption.  at first it was going to be a spring loaded gun like the derringer thing in sherlock holmes but with a huge gun (i actually have feasible plans in my head for that one.)  but it drifted off to make an even bigger gun.   i thought, and came up with an awesome idea. a retractable Gatling gun arm.  the gun will move forward, and backward, and will spin around. i made a 3d example to show what i mean, if i can figure out how to post it. [URL=][IMG][/IMG][/URL] and if that's the wrong code: what do you think?  any suggestions, questions, ect?

Posted by badideasrus 7 years ago


Detailed explanation about ARM processor?

Asked by srinu.rao464 6 years ago

combat arms user names

Post ur combat arms usernames below ps mine is imawinner

Posted by finmonster 8 years ago

Completed Arms

Here is where we can post projects as they are completed.

Posted by CarliPierce 9 years ago