Neo Ventilator switch adapter

[earlevel]

I write about DSP, usually, but thought this simple project might help someone with the same problem I had.

I wanted to control my Neo Instruments Ventilator (Leslie simulator pedal) from a MIDI-controlled relay, since it has not MIDI control. But the short-sighted Neo implementation made that not possible, without buying two MIDI relays—hence this adapter. The adapter also allows a simple spst footswitch to control speed externally, in place of their more expensive dual footswitch.

It's a very simple circuit, wiring, and a couple of 1/4" jacks—I built it in a mint tin:

http://www.earlevel.com/main/2013/02/16 ... -mint-tin/

[Hink]

very cool