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elbug - electronic keyer at serial port

elbug - simple c program for electronic morse key at the serial port

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a simple c program for an serial elbug = electronic morse key.which is to be plugged to the serial port, its output is also a pin in the serial port.

Just compile it by 'gcc elbug.c -o elbug'
or use the ready-compiled file and copy elbug to user/local/bin.
/* Call it as root. */
How to cable your homebrew elbug?
Middle pad: +9V battery via Resistor 2k
Left contact: -> DCD
(9-pin plug: 1) (25-pin plug: 8)
Right contact: -> CTS
(9-pin plug: 8) (25-pin plug: 5)
Ground: -pole battery
(9-pin plug: 5) (25-pin plug: 7)

by Günther Montag , ex- dl4mge
now maintained by Patrick Strasser OE6PSE (trapicki)
now actual version also at


elbug - electronic keyer at serial port Web Site


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