Robotic Arm using Potentiometer and Servo Motor with step by step instructions

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Robotic Arm using Potentiometer and Servo Motor 

Circuit diagram:


In this project, we are simulating the basic movements of a robot's arm and legs using Arduino UNO, 4 servo motors, and 4 potentiometers in Tinkercad. Each servo motor is controlled by one potentiometer, which acts like a manual control knob.

 Components Used:

  • Arduino UNO

  • 4 Servo Motors (for joints)

  • 4 Potentiometers (for manual control)

  • Breadboard

  • Jumper wires

  • Power supply (from Arduino)


A robot needs joints to move its arms and legs. These joints are controlled by servo motors, which can rotate between 0 to 180 degrees. To control the angle of each servo, we use potentiometers — rotary knobs that provide variable voltage. As you turn the knob of a potentiometer, the connected servo motor rotates to a new position.Each potentiometer controls a specific servo motor:

  • Potentiometer 1 ➝ Servo 1 (Robot Shoulder Joint)

  • Potentiometer 2 ➝ Servo 2 (Robot Elbow Joint)

  • Potentiometer 3 ➝ Servo 3 (Robot Hip Joint)

  • Potentiometer 4 ➝ Servo 4 (Robot Knee Joint)

This setup mimics how a human moves their limbs — with different joints moving independently.The Arduino reads analog signals from each potentiometer (values between 0 to 1023).It maps these values to servo angles (0 to 180 degrees).Each servo then moves to the corresponding angle, simulating joint movement.


Code:




BEGINNER PROJECTS (Foundation Skills)

  1. Ultrasonic Distance Measurement
  2. Traffic Light Simulation with 7-Segment Display
  3. 7-Segment Display Counter
  4. Kids Piano Circuit (8-Key Version)
  5. 16×2 LCD Display with Text Output
  6. LCD I2C to Arduino UNO
  7. Temperature Measurement using Arduino UNO
  8. LDR Controlled Street Light

INTERMEDIATE PROJECTS (Build Your Skills)

  1. Servo Motor Control Using Potentiometer
  2. DC Motor Speed Control
  3. Temperature Controlled Fan
  4. PIR Based Theft Alert System
  5. LPG Gas Leakage Detection System
  6. Automatic Door Locking System
  7. Soil Moisture Based Automatic Watering System
  8. Simple Digital Clock using Arduino UNO
  9. Automatic Voting Machine (EVM)
  10. Joystick Control using Arduino Uno
  11. RGB Lamp Control using Arduino Uno

    ADVANCED PROJECTS (Master Level)

    1. Home Automation Using Arduino UNO
    2. Bluetooth RC Car using Arduino Uno
    3. Obstacle Avoiding Robot
    4. Line Follower Robot
    5. Radar System Using Arduino UNO
    6. Automatic Parking System
    7. Bi-Directional People Counter using Arduino Uno 
    8. Automatic Plant Watering System
    9. NeoPixel LED Ring Control using Arduino Uno
    10. Smart Gloves for Bedridden People

      ROBOTICS & MOTION PROJECTS

      1. RC Car Using L293D Motor Driver
      2. Robot Arm and Leg Control Using Servo
      3. Smart Irrigation System using Arduino Uno

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