The Luddite Technologies Line-Powered Keyer
Telegraphers have long enjoyed a wide variety of keyers; however, to
date, these devices have all been powered either from an external power
supply or from a battery. Improvements in microcontroller technology now
allow for the implementation of a keyer that derives its operating power
solely from the transmitter's key interface, elminating the need for
external power supplies and batteries.
Shown below are the keyer project's
schematic,
layout,
software
flowchart.
This information is also contained in a document, available
here, and the source code can be seen
here.
Keyer board schematic
Keyer PC layout
Keyer software flowchart
You may send e-mail to:
info@luddite-technolgies.com.
All content ©2011, Mark Walsh, except as noted.