And after years now of being basically silent on the issue of attribution, he’s decided to get some of his grudges off his chest and clear the air around Wiring and Arduino. It’s a long read ...

The button states could easily be read by using ... but came to the conclusion that it would be easier to direct wiring the Arduino outputs to the appropriate spot on the head unit’s circuit ...

This typically includes resistors, push buttons ... in the Arduino IDE. The most beginner-friendly sketch here is the "Blink," which simply makes an LED blink. You won't need to wire up anything ...