UPDATED 24/08/2018 - VFE Dragon as per the build guide provided by madbean on his website, go here for more information:
http://www.madbeanpedals.com/projects/VFE/VFE_Dragon.pdfAdded 1.8M pull-down resistor, 300uf filter cap (I'm sure a 1M pull-down and 100uf filter cap will be fine, adjust as you please). Note that the High-Pass and Low-Pass filters are custom C10K/C100K dual-gang pots which are included with the board if you purchase from Madbean. I just made my own by taking C10K and C100K dual-gang pots and swapping the wafers at the rear.
UPDATE 25/08/2018 - Added references to custom dual-gang pots to get the orientation right.
UPDATE 15/12/2018 - Updated the references to the filter switch, they were just mixed up, all good now though.