The Dynamo Reactive Distortion is loosely based on the RAT, but with an optocoupler that dynamically sets the gain based on the input signal level, making for a highly unique and often untamed drive effect.
This kit contains the pcb and all necessary parts to build a fully working effect. Just select the enclosure above, and get 4 knobs, up to 20mm diameter, for 6,3mm shafts separately.
Here is the BOM: Parts list
This project is by Aion Electronics, in collaboration with Musikding. If you have any problems with the contents of the kit, please contact Das Musikding (Klaus).
Here is the direct link to the manual with layout and schematic: