You will need the Arduino Board, a 560Ω resistor ... the pin where we connect the button int LED = 2; //the pin we connect the LED void setup() { pinMode(pinButton, INPUT); //set the button pin as ...

Even though the Arduino board cannot output variable voltage on its ... int i = 0; const int LED = 11; //define the pin we use for LED void setup() { pinMode(LED, OUTPUT); //set pin 11 as OUTPUT } ...

Let it hit your red LED and you’ve lost a point ... Inside the cool laser-cut box is an Arduino Uno and a 9V battery, plus a current-limiting resistor and the all-important buzzer.

Arduino Micro has some extra leds that it is tricky to programme. Like almost all Arduinos, has a built-in led – the green one on the left in the photo. And it has a pair of yellow leds – called TX ...