Practical robotic grip arm

#include <Servo.h>

Servo motor1;
Servo motor2;
Servo motor3;
Servo motor4;
int value;
int degree;

void setup() {
  motor1.attach(3);
  motor2.attach(5);
  motor3.attach(6);
  motor4.attach(10);
  
}

void loop() {

  value = analogRead(A0);
  degree = map(value, 0,1023,0,180);
  motor1.write(degree);
 value = analogRead(A1);
  degree = map(value, 0,1023,80,150); // With this part, the angle value of the servo motor must be different from the standard 0-180 since the gripper might touch the ground and unbalance the robotic arm. That's why I limited the angle as 80-150 degrees.
  motor2.write(degree);
  value = analogRead(A2);
  degree = map(value, 0,1023,0,180);
  motor3.write(degree);
  value = analogRead(A4);
  degree = map(value, 0,1023,0,180);
  motor4.write(degree);
}