I wanted to work on building a simple module from start to finish to test out some panel fab ideas and I thought a LPG/LPF would be a good candidate. After listening to Why We Bleep Ep.2 with Abstract Data and talking about the character of imperfection in analog circuits, I thought making a DIY vactrol based board would be interesting! I also thought if there were 2 halves, you could use slightly different components and vary each to make them truly distinct from one another. You can get different characteristics in the filter depending on the size and material of the LPF capacitor.
Panel font by Alice Savoie / CNAP CC BY-ND 4.0
Presenting two tone, 2X passive LPG/LPF in 3hp.
PCBs:
Final Assembly:
In my rack:
the snappy bass is the main two tone thing at work with a short gate LPFing & LPGing a Noise Reap Bermuda’s Sine output. the second is coming from the chord organ, but it’s much more subtle. 
or nice 
for best results.
Github repo coming soon with rev2 board (I need to flip the LPF attenuation direction)
