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 in line)
When using the Arduino IDE:
- Preferences : Add board url :
- Set board info like: (NOTE PROGRAMMER USBasp)
- Burn bootloader
- After that compile and upload
Source code used: https://github.com/andyhighnumber/Attiny-Arduino-Games/tree/master/MorseAttinyArcade
I had to short JP2 to get the USBasp into slow burn mode, else the attiny85 could not be found
Hard to do without a propper morse key!