This is probably one of the more mundane projects that pops up every now and then, but I would like to set up a remote control for a friend's vehicle. He has a fan and a light which he would like to control remotely.
My immediate thoughts are to install an Arduino nano in between the power supply and the fan/light. I would hook up the 12v power through transistors.
The part I really need help with is deciding whether to use IR, RF, or even ultrasound. I do have a collection of old IR remotes from TVs, DVD players etc. so that might be a good thing to try.
What would you suggest?