DIY Morse Code Keyer

Over the last couple weeks whenever I had the time I’d work on creating a little DIY morse code keyer. After 6 designs (whoa!) I came up with the winner. The youtube video describes it all I guess. Basically it just uses a bar of aluminum which rocks on a metal pin. Thumb-screws on each side of the balance point (fulcrum?) can be adjusted to modulate the distance the paddle has to go down to be activated, and how high the paddle goes up when released. A couple springs (one pull-type and one push-type) help give it a good bounce between keys. Two potentiometers (knobs) control volume and frequency. I especially like the ability to control the frequency! A capacitor inline with the speaker helps smooth the output a bit too. It’s not professional, but hey – for a couple bucks of parts I made a functional keyer and had a blast doing it. Now I guess I should learn Morse code…

And some photos…