Our looping ADSR DIY kit is now available as a PCB, PCB+Panel, Full Kit, and Pre-Built option.
It's a really cool (and surprisingly simple) design we adapted from the wonderful Nicolas from the Electro Music Forums (with his permission of course).
Using only two analog ICs, and some clever diode switching, you get an ADSR or a variable waveshape Saw-Tri-Ramp LFO.
The panel was designed by Grayscale, uses no wiring, and, as with all of our modules, there is a full video how-to build guide.
More info here: http://aisynthesis.com/product/looping-adsr-envelope-generator-diy-kit /