//----- Digital Pins ----- const int switchPin2 = 2; const int switchPin3 = 3; const int switchPin4 = 4; //----- Readings ----- int switchState2 = 0; int switchState3 = 0; int switchState4 = 0; void setup() { Serial.begin(9600); Serial.println("Starting experiment!"); pinMode(switchPin2, INPUT); // Associate switch to pin as a sensor pinMode(switchPin3, INPUT); pinMode(switchPin4, INPUT); Serial.println("Setup finished!"); } void loop() { switchState2 = digitalRead(switchPin2); // Read switch state switchState3 = digitalRead(switchPin3); switchState4 = digitalRead(switchPin4); Serial.println("Switch 2: " + String(switchState2) + " - Switch 3: " + String(switchState3) + " - Switch 4: " + String(switchState4)); }