CW keyer - elbug Winkey
I have bought a kit of Winkeyer2 Serial, assembled it and put into box.
It is a very nice keyer design made by K1EL - it integrates functions of elbug, memory keyer and computer controlled keyer. The main usage is high quality keying controlled by CW contesting software - the software sends commands to keyer over serial port and keyer controls the transceiver (sends precise timed CW signal as well as PTT signal). All functions are implemented in Microchip PIC controller, there are just few other components on the PCB. The keyer is completely powered from COM port, no battery needed.