In this tutorial, I will share with you how to make a smart robotic arm. You can control this arm using a “Master” arm using potentiometers.

The “Slave” arm is comprised of servos and will run off of the potentiometer readings. This will mimic manual movements.

Along with this feature, the prototype is also smart because it can record positions and repeat them continuously.

This project is designed for people with experience using Arduino and electronics. Therefore, I wouldn’t recommend this project to absolute beginners.

You need basic understanding of using Servos, potentiometers, and programming knowledge.

COMPONENT REQUIRED

Arduino nano : - http://amzn.to/2BJYzxI

Servo motor : - http://amzn.to/2Ar89au

Tactile push button : -http://amzn.to/2BKPuEL

DC power jack : - http://amzn.to/2AwO8NP

Header pin : - http://amzn.to/2knXbfW

You can increase the number of joints to increase range of motion by increasing servos and potentiometers.

If you want to make your own arm you can use an Acrylic sheet or Popsicle sticks. As I have used.

You can even 3D print a design or use a CNC machine. Another option is to buy a Robotic Arm Kit,

which consists of everything needed for this project.

CIRCUIT DIAGRAM AND CUSTOM PCB

complete detail of the PCB you can find here :- https://oshwlab.com/sharmaz747/record-and-play-robotic-arm

I have try to build this circuit on bread-board and Zero PCB but all are fail because this option are not reliable,

this project is very sensitive to the value of potentiometer so I am not able to get the desire result I have fail so many times.

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• Follow the simple step to get this PCB board.

1 - Download the circuit board Gerber file: https://oshwlab.com/sharmaz747/record-and-play-robotic-arm

2 - Create an account using the link below: JLCPCB.com

3 - visit JLCPCB.com Add the Gerber file and place the order.

Carefully do the wiring as shown in drawing

Provide separate power supply (5V DC 1amps) to the Servo motors

Don't forget to short ground of both power source ( arduino + servo)

Please go through the attached images and video for better understanding..

I divide whole project in two parts

1. Servo Motor assembly
2. Potentiometer assembly

1. Servo motor assembly: - Servo motor as J1, J2, J3, J4 fix the servo motors as shown...