If any issues arise please click here to contact us via email first. We'll walk you through any problems you may be having (with the module).


for v1.0 boards

Part Value Qty. Link Notes
C1, C2 10uF 2 here
C5 100nF 1 here
D1, D2 1N4004 2 here
D3, D4, D8, D9 1N4148 4 here
D5, D6, D10, D12 LEDs 4 red LEDs here any 5mm LEDs work, experiment!
IC1 TL074 1 here
L/R DIRT 20kB 2 here kurled shaft 9mm
L/R GAIN 50kB 2 here
R2 / R6 / R10 / R14 1k 4 here all resistors 0805, 1/8w SMD
R4 / R5 / R12 / R13 2k 4 here
R8 / R15 10k 2 here
R3 / R11 56k 2 here
R1 / R9 100k 2 here
ALL JACKS 4 here aka "Thonkiconn"
Euro Power pins 2 x 5 here 2 rows of 5
Piezos 2 here leave the lead wire on!


  • Affix the two piezo elements to the circles on the back of the panel. Hot glue or superglue works well here.

  • You can affix pretty much anything (or nothing) you'd like to the front panel, but if you'd like the classic sandpaper, cut it to a width of about 92mm and height of 63mm. Pieces of belt sander sandpaper work well here and are very durable.

  • Before powering on for the first time, check for shorts between the GND, +12, and -12 test points.

  • Values for all parts will be on the board.

  • The 3.5mm jacks are marked with their function (IN, OUT, etc) for easier troubleshooting.