The components for the thing cost 2,40€ at SP-Elektroniikka. Unfortunately, they only had plastic push button switches. Might have to ebay something sturdier some day.
The schematics is easy enough for anybody with a soldering iron. Here is more information of making the thing.
I made the "pedal" by gluing three 10mm pieces of redwood together, then routing a cavity in the middle, slanting the box with belt sander and gluing on the cocobolo "top". After the electronics were soldered in place, I sealed everything with a cedrela odorata baseplate.
And here is how it looks like.
|Hi-tech and lo-tech side by side. The top is cocobolo, body is figured redwood and baseplate is cedar.|
|Sorry about the plastic knobs. They hurt my eyes, but do the job exceptionally|
|Recessed jack and an oops-hole.|