This is a two rotor version. It is 4 inches
in diameter. I think I might have to go up
to 5 inches for a 3 rotor version.
This can be rotated manually like a Model T
to set the timing. It needs a few minor additions.
The CMOS buffers and CMOS 555's are on the board
because there is room for them.

I am working on a dwg for the trigger wheel.

Paul Lamar