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Circuits listed below are in PDF format

I have about 1000 circuits in a binder I started in 1982, most of them culled from magazines and books and most of them hand-drawn!  The circuits below were drawn using Protel Schematic and are just a sampling of what's available and what I've done. (I've built hundreds of circuits.)  Later, when I have the time and web space, I'll consider scanning my 4" binder and putting those circuits here, maybe even with a printed circuit board layout.

Check out the links below this table for access to thousands of circuits.

4 channel light sequencer

Standard for my Christmas displays.  This one used solid-state relays

Robot drum using voice IC

I needed a drum, so I made one using an IC that I recorded the sound on.  I had to make a PC board for the amplification of the sound IC

Simple flasher

 

Allen Bradley PLC AC out card

They wouldn't give me a schematic, so I reverse-engineered the board.

Darth 16

Named for Darth Vader, not sure if he used a 16 channel sequencer or not...

Robot drive

Same robot I built the drum for.  This is the entire electronic section

 

 

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