Technical

How to midi-retrofit an Electro Harmonix – Mini-Synthesizer. Model: EH 0400. This walkthrought probably applies for a model EH 0410 too.

How to midi-retrofit an Electro Harmonix – Mini-Synthesizer
Lomo UP27 / ЛОМО УП-27 racking project

Disclaimer:

Yeah right, just be carefull.