teranicys

попробуйте поменять
digitalWrite(PIN_SWITCH_1, (RemoteXY.switch_1==0)?LOW:HIGH);
digitalWrite(PIN_SWITCH_2, (RemoteXY.switch_2==0)?LOW:HIGH);
на
digitalWrite(PIN_SWITCH_1, (RemoteXY.switch_1==0)?HIGH:LOW);
digitalWrite(PIN_SWITCH_2, (RemoteXY.switch_2==0)?HIGH:LOW);
и после
pinMode (PIN_SWITCH_1, OUTPUT);
pinMode (PIN_SWITCH_2, OUTPUT);
добавить
digitalWrite(PIN_SWITCH_1, LOW);
digitalWrite(PIN_SWITCH_2, LOW);