int LeftSwitch = 2; int RightSwitch = 18; int LeftSwitchValue; int RightSwitchValue; void setup() { pinMode(LeftSwitch, INPUT_PULLUP); pinMode(RightSwitch, INPUT_PULLUP); pinMode(3, OUTPUT); pinMode(4, OUTPUT); pinMode(5, OUTPUT); pinMode(6, OUTPUT); pinMode(11, OUTPUT); pinMode(12, OUTPUT); pinMode(13, OUTPUT); pinMode(15, OUTPUT); pinMode(17, OUTPUT); Serial.begin(9600); } void loop() { LeftSwitchValue = digitalRead(LeftSwitch); RightSwitchValue = digitalRead(RightSwitch); Serial.print("left: "); Serial.print(LeftSwitchValue); Serial.print(" right: "); Serial.println(RightSwitchValue); if (LeftSwitchValue == HIGH){ digitalWrite(3, LOW); digitalWrite(4, LOW); digitalWrite(5, LOW); digitalWrite(6, LOW); } if (LeftSwitchValue == LOW){ digitalWrite(3, HIGH); digitalWrite(4, HIGH); digitalWrite(5, HIGH); digitalWrite(6, HIGH); } if (RightSwitchValue == HIGH){ digitalWrite(15, LOW); digitalWrite(17, LOW); digitalWrite(13, LOW); digitalWrite(12, LOW); digitalWrite(11, LOW); } if (RightSwitchValue == LOW){ digitalWrite(17, HIGH); digitalWrite(15, HIGH); digitalWrite(13, HIGH); digitalWrite(12, HIGH); digitalWrite(11, HIGH); } }