If you have lots of RC creations about, each with their own receiver, you’ll know that the cost of a new one for each project can quickly mount up – despite RC receivers being pretty cheap these days.

An interesting trick you can do with a a fast CPU and a GPIO pin mapped directly to memory is an FM transmitter. Just toggle a pin on and off fast enough, and you have a crude and kludgy transmitter. ...

There are countless RC Kill Switch devices available on the market. They are mostly simple and cheap devices, activated by signal loss or inactivity on RC channel which they are wired to. However, ...