Let's Make Robots!

Remote Controlled Robotic Arm

Move 1 to 1 to the controller
Remote1.pde5.24 KB
Sense.pde952 bytes
remote_design.zip25.87 KB


This is a project I did over the summer. I made a robotic arm that is contolled with a 1:1 controller.
The robotic arm is basically 4 standard servos and three micro servos. All the mounting parts and
turn-table is from lynxmotion. The other parts are made from cut pieces of polycarbonate and PVC angles.
The microcontroller is an Arduino. I used the Ardweeny from Solarbotics. There is some electrical and
duct tape on it since the cut polycarbonate has sharp edges.

The controller is made of PVC angles and potentiometers. I made the controller like a 1:1 model of the
robot arm. The joints are potentiometers. I used servo cables to connect the potentiometers to the

The microcontroller would read the potentiometers and control each servo. The controller has really
fine control, but the potentiometers are not perfectly linear. I had to calibrate the potentiometers
in the programming.


I added the circuit diagram and the claw design. I am going to change the remote design and change the potentiometers since the ones I used before were not very linear. I will post the arduino code once I finish the new remote.

Update 2:

I added the arduino sketches of the project and a new remote design that can be edited in Inkscape. I updated the parts list with the new potentiometers for the new remote. I got the design laser cutted by Ponoko.com. I can't make step by step instructions, but most of the stuff can be bought from RobotShop.com. There are claws and many other stuff for the robot arm from lynxmotion. The remote1.pde is the main sketch, but it needs some parameters that you get by using sense.pde. The comments in the code will help you figure out how to use it.

Update 3:

I thought I posted the code in the last update, but I guess I did not. So here is the code and the remote design.

Update 4:

Go to http://www.lynxmotion.com for some complete robot arm kits. 


Main Parts List

3x  Hitec HS-322HD servos

1x  Hitec HS-485HB servo

2x  3x  TowerPro SG90 servos

1x  Ardweeny from solarbotics

3x  Lynxmotion Pan and Tilt Kit / Aluminium (No Servos)

1x  Lynxmotion Base Rotate Kit

1x  Polycarbonate Sheet

4x  Potentiometers

4x  Potentiometers

4x  Knobs for potentiometers



New Remote


Circuit Diagram


Claw Design



Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.

whats the value of potentiometer used in your excellent project?

im a newbie in electronics thanks(^_^)

Wow! That's brilliant! Do you think you could tape a similar controllor to your arm, so that the robot arm mimics the movement of your actual arm? It might take a bit of work but would be seriously cool!


My name is Elias and I go to New Mexico Military Institute, I am a member of the science olympiad team at my school and we need to build a remote control arm and when I saw your design I instantly fell in love. To be honest, I don't really have any knowledge of robotics but if you could help me out, and just briefly explain some of the components of your design and the code, I would be in your debt forever. Anyway, I would really appreciate it and so would my school.

brilliantly done!!!!! how did you make it move like that? so smoothly and efficiently? I mean how does it even work

Nice design on the gripper, about how much can it hold?

The way this arm is controlled is just too simple to be cool, it's passed into the realm of awesomeness.  I feel like I should have seen this control method before, but I don't think I have.

The 1:1 control must allow pretty easy control.  I've done some RC stuff and there's always a learning curve involved with working the controls.  Here, it's just 1:1, you just do it.  Now you need to put this on a tank bot, drive it around and pick stuff up.  For no other reason than it would be awesome.

I was wondering, how feasible would it be to make it remember movements and replay them?  You could use this 1:1 controller to record movements for your arm and replay them.

Hi will You please email me at ztzoomer506@gmail.com with instructions on how to build this.PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

how much it will take you to post codes,

rest thanks for diagrams. can we meet on chat if possible, send me the time.


verry verry nice

verry verry nice