N5ESE's Version of the KD1JV 555 Keyer Kit

This keyer was supplied by Steve Weber, KD1JV in 2002, as a kit for practicing surface mount soldering techniques. The circuit, designed by Wes Hayward, W7ZOI, is based on a design using three 555 Timer chips. The original circuit appears in his book "Solid State Design for the Radio Amateur". By today's standards, it is a very poor keyer, but it does work, and it's definitely a cute little novelty item that demonstrates some clever engineering.

The kit is no longer available, but here's a picture of the inside of this "Altoids" project:

[Click on the above image to see a larger version]

Copyright 2005 ...[ view copyright info ]...
Overseer: Monty Northrup ... n5ese@prismnet.com ... leave e-mail ...

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