Keyestudio 4DOF - Project 5: PS2 Controlled Robot Arm (Extension)

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myservo4.write(pos4);
delay(5);
if(pos4<2)
{
pos4=0;
}
}
// close the claw
void ZB()
{
pos4=pos4+8;
Serial.println(pos4);
myservo4.write(pos4);
delay(5);
if(pos4>108)
{
pos4=108;
}
}
//******************************************
// the upper arm will lift up
void RF()
{
pos2=pos2-1;
myservo2.write(pos2);