Hello, everybody! I’m here to present my own RC key, which I connect to the receiver, so that I can control heavy load. I saw different versions on tiny13 and atmega328, and I realized that a Tiny13 would be too low on memory and it could put me through a lot of nickeling and diming; an Atmega328 would cost me almost as much as an Arduino Nano. I also wanted a simple and familiar Arduino IDE, so I’d be able to quickly reflash it via USB.

I decided to make it open source and give other users an opportunity to build and modify it to suit their needs. I chose a two-dollar Arduino Nano microcontroller, the smallest one.

This is how it works: