DIY-Reversible Piston Control

[JayR]

This is for the do-it-yourselfer members of this forum...

If you ever find yourself working on an organ console MIDI conversion, and you come across the need for a solid-state version of a reversible piston control, here it is! The attached PDF file contains the silkscreen and etch patterns to make a reversible piston control printed circuit board. So, if you know how to etch your own printed circuit boards, feel free to use the patterns I have provided.

This circuit uses an array of solid-state relays to make a thumb or toe piston function as an on/off switch. It can be useful for controlling a zimbelstern, a sfortzando, or any other organ function that requires a reversable piston trigger.

Have Fun!
Jay