# Fart Box Builds **URL:** \ **Category:** KOSMO MODULES\ **Created:** [May 7, 2020, 9:02am UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828 "2020-05-07T09:02:18Z")\ **Posts on this page:** 20\ **Page:** 15
**Author:** ![zorch](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/zorch/32/5586_2.png) [@zorch](https://lookmumnocomputer.discourse.group/u/zorch)\ **Post date:** [April 24, 2022, 3:54pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/284 "2022-04-24T15:54:48Z")
Super cool build!! This screams for some internal lighting of some sort. > [@richy486](#): > > - don’t know what the on/off switch does Has got to be one of the best things I’ve heard lately. It really speaks deeply to me from a DIY perspective. Love it. ---
**Author:** ![richy486](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/richy486/32/23222_2.png) [@richy486](https://lookmumnocomputer.discourse.group/u/richy486)\ **Post date:** [April 24, 2022, 4:30pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/285 "2022-04-24T16:30:17Z")
Thanks for the complements on the case! @lookmumnocomputer thanks for the reply! I used a 5k on the diet knob on/off, yup top right ( @zorch haha! ) @Willi359 Shot of the corner, it’s cool how the bolts stay in when they look like they will fall out. ![8F31EC1C-3FFD-41B4-82B0-D8784661E9FA_1_105_c](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/3/4/34eeb7fb1958ab0595651ccc912d44cb6491c82a.jpeg) With the lights on, more lights would be cool! ![F4E72D2C-008C-436D-A696-D06726724EC5_1_105_c](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/9/a/9af73aaefeed75b0007f325269d15d50e829d74c.jpeg) Used [makercase.com](https://en.makercase.com/#/basicbox) to make the box then added the drill holes using [LMNC’s drill guide](https://www.lookmumnocomputer.com/s/FART-BOX-DRILL-GUIDE.pdf) in Sketch then got it to print size in Illustrator, in this process something went wrong and the vertical placement of the holes was a little short so i drilled them out a little bit by hand so I probably wont add the .svg here. I got it cut from a [shop on Etsy](https://www.etsy.com/uk/listing/1167093880/laser-cutting-service-uk-custom) who helped me with the overall sizing which worked out great. ---
**Author:** ![richy486](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/richy486/32/23222_2.png) [@richy486](https://lookmumnocomputer.discourse.group/u/richy486)\ **Post date:** [April 24, 2022, 10:31pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/286 "2022-04-24T22:31:47Z")
Both Sync switches seem to be working now, crazy machine! ---
**Author:** ![Willi359](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/willi359/32/19681_2.png) [@Willi359](https://lookmumnocomputer.discourse.group/u/Willi359)\ **Post date:** [May 12, 2022, 6:56am UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/287 "2022-05-12T06:56:05Z")
Hello again. I started my 2nd Fartbox today. As expected i ran into problems. To fix it up and get a better understanding of what is happening where i created this annotated image based on the patreonised shematic. this might come in handy for others… 🙂 ![fb-annotated](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/e/7/e7a2dfa1aef7f41425b438c9c81580992ac34e99.jpeg) @lookmumnocomputer: I hope this is OK and does not give away business intelligence. ---
**Author:** ![SphericalSound](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/sphericalsound/32/21276_2.png) [@SphericalSound](https://lookmumnocomputer.discourse.group/u/SphericalSound)\ **Post date:** [June 9, 2022, 5:32pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/288 "2022-06-09T17:32:19Z")
Hi guys!! I have built a fartbox but it is buggy. I have used bc547c instead of the bc107 using the same pinout Used bc557 instead of bc558, same pinout as well The push button is not implemented, the rest is pretty much as specified. I have no sound, but if I touch the bc547 with the finger I listen some farts and noises. The filter and oscilators seems to be working but I would say the envelope is always looping and not that reactive to the pots So the questions: the trannies are same pinout and compatible, right? Does it need the big button to work?. Can I trigger it just with the IN port? Anyone can confirm me the pinout of the big button?. It seems pin 4 is GND but the other 3 no idea Any suggestions on debugging?. Im pretty seasoned builder, but without the schematics I dont know what to look at Thaaaanks!! ---
**Author:** ![Willi359](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/willi359/32/19681_2.png) [@Willi359](https://lookmumnocomputer.discourse.group/u/Willi359)\ **Post date:** [June 9, 2022, 6:46pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/289 "2022-06-09T18:46:54Z")
- for the button configuration i’d start [here](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/55) and [here](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/63) (in this thread above) - fartboxes are known to be dificult to debug, hang in there! - i can’t tell you about the component compatibility that’s above my leage too (edit: OH… and welcome!) ---
**Author:** ![Dud](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/dud/32/610_2.png) [@Dud](https://lookmumnocomputer.discourse.group/u/Dud)\ **Post date:** [June 9, 2022, 9:23pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/290 "2022-06-09T21:23:57Z")
Welcome to the forum and maybe also some info here 🙂 > [@General advice for troubleshooting a module and asking for help](https://lookmumnocomputer.discourse.group/t/general-advice-for-troubleshooting-a-module-and-asking-for-help/2049): > > (This is a wiki post, please add and correct!) Look and see if others have had the same problem. Use the Discourse search facility to find topics where the module you’re building is discussed. Inspect your work. Verify all components are correct values. Look for solder connections that are rough, irregular, skimpy, dull, or missed completely (we all do that!) and reflow them. Look for solder bridges between pads and remove them. Check your power connection. If it’s a Eurorack style power cabl… ---
**Author:** ![SphericalSound](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/sphericalsound/32/21276_2.png) [@SphericalSound](https://lookmumnocomputer.discourse.group/u/SphericalSound)\ **Post date:** [June 9, 2022, 10:54pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/291 "2022-06-09T22:54:05Z")
That was super useful… Finally I understand how to connect it… Thanks!! I have been reviewing pinouts and bc107 is basically identical to bc547, so the bug has to be in other place… ---
**Author:** ![SphericalSound](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/sphericalsound/32/21276_2.png) [@SphericalSound](https://lookmumnocomputer.discourse.group/u/SphericalSound)\ **Post date:** [June 9, 2022, 11:07pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/292 "2022-06-09T23:07:27Z")
So, I have become patreon 😃 Anyone can point me where the schematic is? Fisrt time patronizing, and I dont find it! Edit: found it and I have the circuit farting a lot!!! YEAH I just needed the button the rest was working ok. There´s still some pots that seems to do nothing, like the resonance, but maybe I just have to understand the machine first 😃 2nd edit: it seems all pots work!. Im having a blast with it, is incredibly fun!! 😃 Is anyone selling PCB front panels or similar? ---
**Author:** ![Willi359](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/willi359/32/19681_2.png) [@Willi359](https://lookmumnocomputer.discourse.group/u/Willi359)\ **Post date:** [June 10, 2022, 5:23am UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/293 "2022-06-10T05:23:53Z")
- i created [this](http://wilke.zone/LMNK/fart_box-front.svg) to be used with a K40 laser. ![fbfrontprv](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/a/3/a3296e7601367584c0db118b7d83d62fdda0f96d.jpeg) (28 x 20cm, holes could be a tad bigger) ![fbf-prv2](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/d/e/de1fe1946c76d7c8d2ec050f1de1fd7a8eaeed01.jpeg) - there is a [drill guide on the project page](https://www.lookmumnocomputer.com/projects#/fart-box) ---
**Author:** ![d42kn355](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/d42kn355/32/273_2.png) [@d42kn355](https://lookmumnocomputer.discourse.group/u/d42kn355)\ **Post date:** [July 11, 2022, 1:05pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/294 "2022-07-11T13:05:49Z")
[https://drive.google.com/drive/folders/1HgQcHUGxRQ2GPdhD1BtG-mqfDwMnvA\_X?usp=sharing](https://drive.google.com/drive/folders/1HgQcHUGxRQ2GPdhD1BtG-mqfDwMnvA_X?usp=sharing) Anyone can feel free to run my Gerbers - just please arrange others to give them out to in the forum rather than sell them 🙂 Make sure to run the power board as well 😃 KOSMO Braids Konversion panel is in here as well 🙂 ---
**Author:** ![MeltedMind](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/meltedmind/32/21201_2.png) [@MeltedMind](https://lookmumnocomputer.discourse.group/u/MeltedMind)\ **Post date:** [August 23, 2022, 1:25am UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/295 "2022-08-23T01:25:58Z")
I’ve got some of the FB panels on order that @d42kn355 has so graciously shared the gerbers for! Shoot me a message if interested, I’ll sell them at cost! ---
**Author:** ![Steve](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/steve/32/23557_2.png) [@Steve](https://lookmumnocomputer.discourse.group/u/Steve)\ **Post date:** [October 30, 2022, 10:54am UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/296 "2022-10-30T10:54:07Z")
Hello Guys! No Fart Energy, I have finished a fartbox with panel, turned everything on, but oh look, I forgot to connect the three power pins from the jack board to C4 & C5. After some (months) hiatus i am working on my synth again…and apparently i’ve been…not smart. 😃 So now I have to ask, since the fartbox board is complete: do I need to remove the two capacitors at C4 & C5 and/or the two big ones? ![Zombodroid_30102022115313](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/b/9/b9ebcd7aa90f70a9fb0177e95ebd7f5a17f88b3d.jpeg) EDIT: Or i could just make a Y-Cable from my AC Plug that powers everything and go straight to “AC in” on the FB board. Yep, not smart at all. But regardless, if you can answer my question above, please do so. ---
**Author:** ![d42kn355](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/d42kn355/32/273_2.png) [@d42kn355](https://lookmumnocomputer.discourse.group/u/d42kn355)\ **Post date:** [October 30, 2022, 1:33pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/298 "2022-10-30T13:33:19Z")
Keep C4 & C5 In - and solder to their Legs 🙂 # 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 ---
**Author:** ![JUXTAPOZ74](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/juxtapoz74/32/523_2.png) [@JUXTAPOZ74](https://lookmumnocomputer.discourse.group/u/JUXTAPOZ74)\ **Post date:** [November 20, 2022, 3:05pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/299 "2022-11-20T15:05:27Z")
Thoughts on using a BC547 instead of BC107 for the Fart Box. ---
**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\ **Post date:** [November 20, 2022, 4:43pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/300 "2022-11-20T16:43:45Z")
Seems like it should be fine > **[BC107 NPN Transistor](https://components101.com/transistors/bc107-npn-transistor)** > > BC107 NPN Transistor ---
**Author:** ![BergBerg](https://avatars.discourse-cdn.com/v4/letter/b/53a042/32.png) [@BergBerg](https://lookmumnocomputer.discourse.group/u/BergBerg)\ **Post date:** [November 20, 2022, 5:05pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/301 "2022-11-20T17:05:41Z")
Hello all, first post here, I am building a Fart Box white panel edition. I’m not a pro at this stuff, in the past have build xoxbox(since sold), midibox 8 sid(since sold,wish i didn’t), a few eurorack modules-TouellSkouarn(still have)…more of a paint by numbers understanding. Liked this one so bought a while back and am finally getting to it,(all components in, on to enclosure…etc.) Current Questions on this build i’m hopeful some kind knowledgeable folks can help with: 1: The power supply link is dead and i need some specs on the power supply (12V AC…What current output), Saw in another thread here that someone is running 2A. What was the original full spec, or one that folks have with a working Farter? I’m not planning to power from my euro. 2: I’m contemplating a clear plastic/acrylic enclosure so one can see the cool white circuit board Sam birthed. I want to add some UV “black light” LED’s to the inside of the enclosure so the board will pop. Any idea on where i could hook up a few so it doesn’t mess with the circuit. I’m not opposed to pulsation of light…rather then always on 3: I picked up the on-on switches, are there any other known oddities on the board or parts BOM? In advance thanks for any help. ---
**Author:** ![JUXTAPOZ74](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/juxtapoz74/32/523_2.png) [@JUXTAPOZ74](https://lookmumnocomputer.discourse.group/u/JUXTAPOZ74)\ **Post date:** [November 23, 2022, 1:32pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/302 "2022-11-23T13:32:37Z")
Curious to know what power jack and power supply everyone used on this build, U.S. Links to product would be awesome, thanks! ---
**Author:** ![Riggidyboo](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/riggidyboo/32/10_2.png) [@Riggidyboo](https://lookmumnocomputer.discourse.group/u/Riggidyboo)\ **Post date:** [November 23, 2022, 2:41pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/303 "2022-11-23T14:41:27Z")
> **[Jameco Reliapro ACU120100D0531 AC to AC Wall Adapter Transformer 12V @ 1000 mA...](https://www.amazon.com/Reliapro-ACU120100D0531-Adapter-Transformer-Straight/dp/B00B8861T2)** > > Output connector type: female 2.5mm inside diameter / 5.5mm outside diameter straight plug. Jameco's industry-leading wall adapters are guaranteed to last long, perform better, and keep your work station up and running. I can’t find exactly where I bought my power jacks from, something like this though. > **[DC Power Jack 2.1mm Enclosed Frame With Switch](https://www.taydaelectronics.com/dc-power-jack-2-1mm-enclosed-frame-with-switch.html)** > > Get It Fast - Same Day Shipping ---
**Author:** ![devicex](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/devicex/32/28_2.png) [@devicex](https://lookmumnocomputer.discourse.group/u/devicex)\ **Post date:** [November 24, 2022, 5:39pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/304 "2022-11-24T17:39:13Z")
just hard wired a walwart I had lying around . [Previous page](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828.md?page=14) [Next page](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828.md?page=16)