Arduino Project – Robot Arm Control with a Potentiometer

In this tutorial, we will learn how to use robotic arm control with potentiometer. We will control 4 axis robot arm with 4 pcs potentiometer. We will use external battery / power when doing this.

Connections:
The external battery VCC / GND connect to the breadboard.
The Arduino GND connect to the breadboard’s GND input
The servo connections we use in this project are as follows;

Orange Input – Signal Input
Red Input – Power Input (VCC)
Brown Input – Ground Input(GND)

The potentiometer connections we use in this project are as follows;

Two other pins are power (VCC) and ground (GND)
Middle pin is signal pin

The Servo1 VCC and GND connect to the breadboard’s VCC / GND inputs
The Servo1 Signal connect to the Arduino Digital PWM 3
The Servo2 VCC and GND connect to the breadboard’s VCC / GND inputs
The Servo2 Signal connect to the Arduino Digital PWM 5
The Servo3 VCC and GND connect to the breadboard’s VCC / GND inputs
The Servo3 Signal connect to the Arduino Digital PWM 6
The Servo4 VCC and GND connect to the breadboard’s VCC / GND inputs
The Servo4 Signal connect to the Arduino Digital PWM 9

The Potentiometer’s one outer pin connect to the breadboard or the Arduino board VCC input
The Potentiometer’s other outer pin connect to the breadboard or the Arduino board GND input
The Potentiometer’s middle pin connect to the Arduino Analog 1-2-3-4 input