Instructables
Picture of Smartphone Controlled Wood Stand
The idea: Remote Controlling the pan movement of a heavy LCD TV, LCD Computer Monitor, or any other object using an Android Smartphone or a Windows, Linux or MAC computer or the manual controls on the Stand.

UPDATE: Control Up to 5 Stands at the same time using the Android Application or a Windows, Linux or MAC computer and all this using just one Arduino
 
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Step 1: The Concept Design and the Prototype Videos

Picture of The Concept Design and the Prototype Videos
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- Conceptual design video:


-The Stand in action:
 

Step 2: The List of Tools, Materials and Machines

Picture of The List of Tools, Materials and Machines
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List of Tools
   - A compass (to draw circles on the wood)
   - A pencil (to mark specific points on the wood)
   - A hammer
   - A caliper ruler
   - A hot glue gun
   - A soldering iron
   - A dust face mask

List of Machines
   -
A lathe machine (to create perfect circles out of the pieces of wood)
   - A drill press (to drill concentric holes in the wood)
   - A grinder (to shape the tool for carving the wooden marble tracks)
   - A wood cutting machine (to hand the circles from the wood)

The List of Materials
   - A sheet of wood (18mm of hight and 800x500 mm)
   - An Arduino Board
   - A bluetooth module
   - 2 potentiometers
   - 7 led's
   - 1 hight torque servo (Hitec Mega Servo 805BB)  
   - 100 glass marbles with 16 mm diameter

Step 3: Cutting out the Wooden Circles

Picture of Cutting out the Wooden Circles
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>>Safety warnings: Remember to wear glasses and a dust face mask when cutting the wood to avoid injury to the eyes and lungs

Instructions:
   - Start out by drawing three 240mm diameter circles on the wood sheet using the compass (with 120 mm radius)
   - Using the hand sew machine cut out the wooden circles
   - Stack all 3 wooden circles one on top of each other and drill a hole in the center (concentric hole)

From now on, the 3 wooden circles will be refered as:
   - the bottom wooden plate
   - the middle wooden plate
   - the top wooden plate
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madminor1 month ago

AMAZING! I LOVE THE IDEA!

So many times i cant be bothered to turn around my monitor or tv!

Great!

seyboy11 months ago
hi sir i am doing the project but i am from ghana and i cant get the bluetooth module in time can you please tell me how i can use wifi to do the connection so that i can use my phone or tablet .. please can you send me the instruction to my email degraft87@gmail.com ... thank you
narker1 year ago
Hey! Great project. I am a little bit of a noob. I am doing a similar project to this, and I have the Arduino and Servo. How do I go about powering the servo?
aldricnegrier (author)  narker1 year ago
Hi narker, sorry i just saw your message today :(

By this time i think you may already know how to power the servo. But here is my answer anyway:

It depends on your servo. If your servo is small and consumes low current, you can power it using the Arduino board.

On the other hand if it is a high torque servo that consumes a lot of current, than you have to power it using a external current source.

I powered mine with the a 5V or 6V transformer that also powered the Arduino board. Just make sure that the transformer can deliver enough current to power the servo and the Arduino at the same time.



Hi Mobile Earth Explorer,

Great instructable! What kind of maximum weight can these turn? I've been looking at making a controlled rotation device but I was attempting to do it using an old DJ turntable. I kept coming unstuck as the bearings in the turntable couldn't handle the weight I was putting on it (obvious when you think of the weight of a record compared to the 13Kg I was putting on it!). Do you think that your system would be able to manage that sort of weight?

Thanks!
aldricnegrier (author)  willpow19931 year ago
Hi willpow1993,

The wood/marble turntable i built can easily handle 60Kg, i know this because i set on it and it managed to turn me. i did this experiment before i put the yellow plastic "legs". In order to do this, you will need to put stronger "legs" under the turntable, i used plastic pins, you can use some wood cubs for example.

keep in mind that the servo motor i used has 24.70 Kg-cm in torque.

Cheers,
Awesome! Thank you!
You don't really need a bluetooth connection to turn that wood stand. It can be done with a small IR remote and an IR sensor instead of bluetooth adapter. and it's also cheap :D
aldricnegrier (author)  Timofte Andrei1 year ago
Hi there h3x, the idea of this project was to use a smartphone to control the stand, i don´'t know any smartphones on the market that emits an IR signal, so it has to be done via Bluetooth or WiFi. Cheers.
Hi,

This will be the first time I will be using an Arduino board and I will be buying it from a supplier who might not have the exact stock.

Could you please tell me exactly what Arduino board it is I should be buying?

Many thanks
aldricnegrier (author)  sixfootjames2 years ago
Hi there, in this project i used the Arduino Uno Board.

Cheers,
Thank you, that helps plenty!
aldricnegrier (author) 2 years ago
UPDATE: Control Up to 5 Stands at the same time using the Android Application or a Windows, Linux or MAC computer and just one Arduino.

Thanks to all of you for your contributions/ideas, the project is now more complete :)
zvizvi2 years ago
Great project!

I really appreciate the craftsmanship in building the physical rig, and the marbles trick is great stuff. Thanks for sharing :)

Could you also share the Android code?
I am about to go on my first Bluetooth adventure and would love some reference code, as the documentation looks pretty daunting...

Thanks,
aldricnegrier (author)  zvizvi2 years ago
Hi zvizvi,

I have the intension of uploading the code to the Android Market, or better the Google Play, so if i share the code here i loose control on "ownership" of the application.

I recommend you start by tinkering the Android Dev site and start working with the Bluetooth example.

I will eventually release the source code one day ... sorry for this, i hope you understand.

Cheers,
Thanks for replying so quick!
I understand,
although I should say I am sole owner of a few apps that are stored on Google code (public SVN, read only access) and are available on the market - not for sale, though. But anyway that's your choice and it's perfectly fine, the build and the apps themselves are GREAT :))
Cheers,
Zvika
Fik2 years ago
Excellent instructable.
I like the mixture of high tech + woodworking, and the idea of building a wood and marbles flat roller bearing is brilliant (from time to time I have come across a project and get stuck because it uses an expensive / hard to find flat bearing)
aldricnegrier (author)  Fik2 years ago
I could have used a lazy Susan flat barring on the stand, but it wouldn't have been so challenging and interesting to build. Also the lazy Susan flat barrings are hard to find in local hardware stores, i could only find them on-line. Thanks for your comment.
Geedox2 years ago
Great Idea! I remember a Sony TV set in the 80's that turned the Set towards the remote control. Precision was sketchy at best and - I imagine - Weight and power issues ditched the idea at the time. Today's lighter TV's are a different history. Keep it up!
aldricnegrier (author)  Geedox2 years ago
Yup, monitors now a days are "feather weights", thanks for the comment.
Kelpbot2 years ago
Very cool project.
Another interesting path to follow would be to have the rotation automated. If you mounted a webcam to the stand, then you could have it track your face or a brightly colored "tag" attached to your shirt. Then you could program the turntable to turn until the webcam was directly pointed at your face or the tag. That way, if you wanted to walk to the other side of the room for your coffee and you don't have any free hands to operate your phone, the screen would already be facing your direction.

Just a thought,

Kelp
aldricnegrier (author)  Kelpbot2 years ago
Thanks for your contribution Kelpbot, its a great idea!
draco9632 years ago
This is freakin' AMAZING!!!!!

Now, do I HAVE to use an Android device, or would there be someway to make this work in some other wireless manner?
aldricnegrier (author)  draco9632 years ago
Thanks for the comment.

I promised the user offtherails2010 to upload a Java application that will allow you to control the stand via Bluetooth from your Windows, MAC or Linux, so keep tuned in for that update.

Cheers,
Phenominal. Thanks mobile_earth! Can't wait!
mstarkey12 years ago
The Lazy Susan for the 21st century. Great idea.
aldricnegrier (author)  mstarkey12 years ago
Thanks mstarkey1 :)
aldricnegrier (author) 2 years ago
I have updated this Instructable so that you can now control up to 5 stands using a single Arduino. The Android app is also capable of controlling up to 5 stands.
!!! DUDE !!!

Your an absolute GENIUS !!! Youve done it !!!!

Truly AMAZING work and i stand back in awe at this marvel youve upgraded !! totally superb work, rated it 5-stars everytime i visit and im collecting all thats required to make at least 4 of these now, one each for 3 monitors and one to show off my RC Buggy lol !!

Totally Blown Away with your work - You should enter this into a competition if it could fit into a current category from instructables !!!

The best Monitor turn-table idea SINCE SLICED BREAD !!!!!!!!!!


Keep up the most-excellent work !!!!
aldricnegrier (author)  offtherails20102 years ago
" The best Monitor turn-table idea SINCE SLICED BREAD !!!!!!!!!! "

lol :)

Thanks, i am glad you appreciate all the work i have done.
Your most-welcome !

& its a very high-appreciation ! VERY !

;-)
shazy7922 years ago
apply grease to marbles the jig will move way smoother and quieter!!!
aldricnegrier (author)  shazy7922 years ago
Ok i will give it a try and see how it goes. I will firstly treat the wood with wood varnish, let it dry, and than i will apply some bearing grease. Thanks.
shazy7922 years ago
U should grease the marbles it would move extremely smooth!! BTW this is awesome..!


aldricnegrier (author)  shazy7922 years ago
Thanks for the comment shazy729. The wood/marble bearing system works pretty well without grease, but thank you very much for the advice/idea any way.
emunah212 years ago
You've a really nice project, congratulations! It looks very fun :p
aldricnegrier (author)  emunah212 years ago
Thanks, remotely turning the stand is actually a lot of fun, specially when you turn up the speed :)
ABSOLUTELY AWESOME !!!! !!!! !!!!

Just what ive been looking for - FOR YEARS !!!

Although i would have wanted a Remote Control for this but you've gone one step further AND TOTALLY BLOWN ME AWAY with using an Android Mobile Phone to Control it !!!

Well Done and Superb Craftsmanship all-round !!

Unfortunately i dont have even a quarter of the tools needed but am collecting those specific tools so in the meantime, i would very much like to know if this could be used to control 3 Servo's - One servo each for 3 separate monitor turn-tables ??

Would this be possible ??

I have 4 monitors hooked up to my PC and want to make this awesome gadget for 3 of the 4 monitors but could this be possible without wasting 3 separate Arduino's for each monitor turn-table, so run any 3 servo's from one Arduino ?!!!?

Many thanks in advance for any/all help given towards this Goal !

Also Rated 5-Stars before reading this and another 5-Stars after. lol !!!

;-)
aldricnegrier (author)  offtherails20102 years ago
Hi offtherails2010, thank you for the double rating :) and for your comment.

I programmed the Android and Arduino application to run a single turntable, but i can easily modify it to run multiple servo ... that is actually a great idea :)

I will rewrite the application in order to control 5 turntables Max, the user will be asked to chose how many turntables he wants to control before entering the control interface.

After i rewrite the applications, they can function by using a single Arduino, you will have to buy long servo extensions thought :)  You can find servo extensions with 1 meter maximum length online. So you can connect all separate servos to the central Arduino (within a 1 meter radius zone).

Keep tunned in, i will hopefully have the alterations ready by the end of the week.

Once again thanks for commenting and in turn enriching the project :)
!!!!! MOBILE_EARTH_MOVER !!!!!!

Your absolutely LEGENDARY !!!!

You really must know that ive been searching for this exact gadget for so very many years but only wanted to make it myself - not to buy it pre-made or as an expensive kit so when your project utilized bluetooth sent from a mobile device i was totally gobsmacked and nearly fell off my perch in sheer awe at this magnificent work !!!

Also i am a complete beginner in the wonderful world of Arduino's and electronics as ive only started learning it all this year and ive made some homemade PCB's and thoroughly enjoying it, not to mention id be totally stuck on how to do what your doing to enable your masterful work to include as many as 5 extra turn-tables, this is so amazing and also so honored for the praise from you !

Lastly a quick question about the bluetooth control, would i also be able to send commands from my computer (Windows 7) to turn these awesome gadgets ???

Once again many thanks in advance for the highly valued greatness and keep-up the extremely impressive intuitive use of ingenuity ! lol !!

;-)
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