HOME BUILD KEYER BASED ON A ARDUINO MEGA BOARD.
If you want to learn more abour this keyer check out blog.radioartisan.com/arduino-cw-keyer/
i did a shield for the Arduino MEGA board.
and a board for the display and the buttons...
The keyer is VERY good and just go and build it and lets meets on the band for some CW RAG CHEWs...
CU VY 73