Keyestudio 4DOF Manual page 153

if(pos4<2) // if pos4 value subtracts to 2, the claw in 37 degrees we have tested is closed.
{ //（should change the value based on the fact）
pos4=2; // stop subtraction when reduce to 2
}
}
if(x2>1000) //// if push the left joystick to the left
{
pos4=pos4+8; // current angle of servo 4 plus 8（change the value you plus, thus change the open speed of claw）
//Serial.println(pos4);
myservo4.write(pos4); // servo 4 operates the motion, the claw gradually opens.
delay(5);
if(pos4>108) // limit the largest angle when open the claw
{
pos4=108;
}
}
}
//******************************************************
// turn
void zhuandong()
{
if(x1<50) // if push the right joystick to the right
{
pos1=pos1-1; //pos1 subtracts 1
myservo1.write(pos1); // servo 1 operates the motion, the arm turns right.
delay(5);
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