How to Make a Robotic Arm

This robotic arm is composed of 4 servos :

• the first servo makes an horizontal sweep
• the other servos control the nozzle of the robotic arm

He can be control with four potentiometer.

You can also see the angular position of the servos on the serial monitor of Arduino IDE.

Remember that the number of baud for this project is 115200 !

Code

#include <Servo.h>
  
Servo my1Servo;  
Servo my2Servo;
Servo my3Servo;
Servo my4Servo;
  
void setup()
{
 Serial.begin(115200);
 my1Servo.attach(3); 
 my2Servo.attach(5); 
 my3Servo.attach(6); 
 my4Servo.attach(9);
}
  
void loop()
{
 int valcomfrom1pot = analogRead(A0);           
 int degree1 = map(valcomfrom1pot, 0, 1023, 0, 180);     
 my1Servo.write(degree1);              
 Serial.println("Angle (Servo 1) : ");
 Serial.println(degree1);
 int valcomfrom2pot = analogRead(A1);           
 int degree2 = map(valcomfrom2pot, 0, 1023, 20, 70);     
 my2Servo.write(degree2);                          
 Serial.println("Angle (Servo 2) : ");
 Serial.println(degree2);
 int valcomfrom3pot = analogRead(A2);           
 int degree3 = map(valcomfrom3pot, 0, 1023, 0, 90);     
 my3Servo.write(degree3); 
 Serial.println("Angle (Servo 3) : ");
 Serial.println(degree3);
 int valcomfrom4pot = analogRead(A3);           
 int degree4 = map(valcomfrom4pot, 0, 1023, 0, 90);     
 my4Servo.write(degree4);
 Serial.println("Angle (Servo 4) : ");
 Serial.println(degree4);
 Serial.println("");
 Serial.println("");
 Serial.println("");
 Serial.println("");
 Serial.println("");
 Serial.println("");
 Serial.println("");
 delay(40);
}

Schematics