Keyestudio 4DOF Manual page 231

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int jiyi4[30];
int i=0;
int j=0,tt=0;
void setup()
{
Serial.begin(57600);
// boot posture
myservo1.write(pos1);
delay(1000);
myservo2.write(pos2);
myservo3.write(pos3);
myservo4.write(pos4);
delay(1500);
error = ps2x.config_gamepad(13,11,10,12);
pins, check for error
if(error == 0){
Serial.println("Found Controller, configured successful");
Serial.println("Try out all the buttons, X will vibrate the controller, faster as you press harder;");
//setup GamePad(clock, command, attention, data)
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