Keyestudio 4DOF Manual page 197

{ //（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 action, claw gradually opens.
delay(5);
if(pos4>90) //limit the largest angle opened
{
pos4=90;
}
}
}
//******************************************************
//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 performs the action, the robot arm turns right.
delay(5);
if(pos1<1) // limit the right turning angle
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