If you’ve ever needed a short-range remote control for a project, [firestorm] is here to help you out. He put up a great tutorial on using an IR remote to do just about anything with everyone… ...

He decided instead to use an Arduino to monitor the 3.3V power rail on the Pi. When the Pi is shut down in software, the Arduino can sense that the Pi isn’t on any more and disconnect the power.

IR REMOTE CONTROL CAR WITH ARDUINO When the car is powered on, the L293D motor shield and the IR receiver module are activated through the Arduino UNO board. The IR receiver then captures the IR ...