ATTINY85 Full-Featured CW Morse Code Keyer

https://www.pa3hcm.nl/?p=1010

Code and schematic are at: http://projectmf.homelinux.com/keyer/

Based upon original open-source code by Jan Lateghan, DK3LJ at http://yack.sourceforge.net/index.html and additional improvements by Jack, AI4SV at http://blog.templaro.com/?p=1315.

See my build of the open source K3NG ATmega 328p keyer/decoder at: https://youtu.be/4tuQ77Zjg54