Last Updated or created 2022-07-17 Using above schematic and attiny program you can make a mini morse trainer. It runs on a single CR2032! I’ve got a attiny85 programmer as pictured below. A Attiny85 chip is a 8 pin microcontroller, but with far less pin’s and its most of the times just a DIP/DIL (Dual … Continue reading Morse with a ATTINY85