About

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This week i Designed a Completely Analog Synthesizer Devoted to farting. Using Cross Contamination Synthesis, Its actually a heck of a lot more versatile than i ever imagined! Samples are available to download from my patreon, including some more crazy non fart sounds :- https://www.patreon.com/lookmumnocomputer Theres also a modular livestream happening this week over there aswell as updates on this project.

i made a small amount of pcb’s for this project for my november 2019 tour, sadly i wont be doing any more but there is nothing stopping you from having a bash at the kicad file below!

FOR PEOPLE WHO HAVE BOUGHT THE PCB ON TOUR :-

Learn more
BILL OF MATERIALS

the above bill of materials is from todd entriken, however the parta are rather self explanatory from the labelling on the pcb. also check the FORUM on peoples builds over here.

things to note. the top potentiometer is 5k. and the bottom two are 1M and the rest are 100K. LINEAR

remember there isn’t much documentation for this! so proceed with caution!!!

DRILL GUIDE AND EXTRA REFERENCES AVAILABLE HERE

THE ENCLOSURE I USE, But you can use any! is the HAMMOND 1550 https://www.rapidonline.com/hammond-1550jbk-ip54-diecast-aluminium-enclosure-black-275-x-175-x-67mm-30-4376

as for the 12v AC AC power any will work! it needs to be AC AC not AC DC though something like this :-

https://www.ebay.co.uk/itm/12V-AC-AC-Replacement-Adaptor-Power-Supply-TDC-Power-20VA-For-Model-DB-20-12/173811821119?hash=item2877fdea3f:g:D8AAAOSwn2pcaxtt


REGARDING THE BUTTON CONNECTIONS:-

as your looking at the pcb from the front, from the top to bottom the pins on that connector go :- 1 Trigger in,2 12v, 3 LED, 4 GND. so you solder the 12v and the trigger in to either side of the push switch, then LED and GND to the plus and minus of the signal LED.






I met philosopher Dylan Trigg at a shared performance in Hannover. He read an essay that captured my attention, because the opening paragraph felt less like a lecture and more like poetry. I was lucky enough to have my recorder running, and turned it into a track.
fart box pcb

FAQ

Can i power the fart box with my eurorack power supply?

YES

You can just skip a few components on the fart box as it has a built in power filter

No need to solder in :-

D9

D10

D11

D12

D13

D14

U8

U9

C17

C18

The above are the components you won’t need if your powering it from the Eurorack. You can still put them in, it will work either way

Solder the eurorack +12v to the positive leg of C4

Solder the eurorack -12v to the negative leg of C5

Solder GND to the negative leg of C4

That will make it powered by the eurorack power