int greenLED = 3; int redLED = 4; int motorPin = 6; int brake = 2; int potPin = A0; int brakeVal = 0; void setup(){ pinMode(greenLED, OUTPUT); pinMode(redLED, OUTPUT); pinMode(motorPin, OUTPUT); pinMode(brake, INPUT); void loop(){ brakeVal = digitalRead(brake); if (brakeVal == HIGH){ digitalWrite(motorPin, LOW); digitalWrite(redLED, HIGH); digitalWrite(greenLED, LOW); } int potRead = analogRead(potPin); int speedVal = potRead / 4; analogWrite(motorPin, speedVal); digitalWrite(greenLED, HIGH); digitalWrite(redLED, LOW); }