What was your first Arduino program? Probably an LED blinker — that seems to be the “hello world” of microcontrolllers. You probably moved on to things a little more complicated p… ...

The button states could easily be read by using an Arduino’s analog input. A Pro Mini model was chosen for its small size as it could be housed in the radio compartment of the dash.

void loop () { for (int i = 0; i < 4; i++) { digitalWrite (leds [i], digitalRead (buttons [i]) == LOW ? HIGH : LOW); } } 📋 Steps to Run 1️⃣ Build the circuit as shown in the diagram. 2️⃣ Connect the ...

/* buzzer-arudino-sketch.ino Handles the click of 1-4 buttons in a Jeopardy / Family Feud style format. Handle the click of a button and illuminate that button's LED's if it's the first one pressed.