AVR Butterfly Keyer
- The Atmel AVR Butterfly is a credit card sized board which contains an AVR MEGA169 processor, a six character LCD display, a five way joystick navigation switch, a piezo speaker, a 3 volt lithium battery cell for power and a few other odds and ends.
FT290 CW KOX Circuit
- This is not actually break-in but just KOX circuit.
It can only be used on the CW mode otherwise it keys up the Tx
- The PIC Keyer is a full-featured Morse code keyer which has been programmed into a PIC 16F88 Microcontroller by W7GC
- The M0KGK keyer with variable speed and weight controls utilising a low cost PIC microcontroller.