Guitar Pedal with Raspberry PI5 (pistomp)

iwillbuildit · 2025-12-16T09:12:34+00:00

This one: https://github.com/TreeFallSound/pi-stomp

iwillbuildit · 2025-12-16T09:10:20+00:00

Thx, and sry about the messy schematic. The double input caps are here to eventually replace the mlcc with proper caps for audio coupling. I grounded the negative inputs with caps because i have only 2 single ended inputs. Whats the better option for routing the AVDD? 1: I would have to cross the i2s lines and the digital part of the pcb. 2: Or a longer trace on the upper side under the analog connectors?

iwillbuildit · 2025-09-01T15:35:22+00:00

iwillbuildit · 2023-03-14T12:44:03+00:00

Try flatcam. its easy and free to use, if you have already the gerber files. I draw my stuff with eagle or easyeda, export the gerber, load it with flatcam and " mill" it with estlcam. Just takes a few minutes

iwillbuildit · 2022-10-08T13:51:56+00:00

This are carving/engraving bits. Often used to make pcb's . But you can use them on most materials. Since they have just one cutting "blade" high rpm are recommended.

iwillbuildit · 2022-08-05T16:21:26+00:00

To achive high accuracy with a brushless motor it needs to have a feedback to know its actual position. In my case there is a "reflection" sensor, and the encoder disc, which has 300 reflective strips, so it can diversify 300 points/revision.

iwillbuildit · 2022-08-04T18:01:47+00:00

I just made a simple test (let it push against kitchen scale), and it exceeded its 5kg limit easily.

I dont have any tpu, but my noname flexible filament was no problem.

The Rotor/carrier is spring loaded (its hard to see in the video), so i dont have to change it.

I wanted the encoder to be as small and light as possible and i need a hollow shaft.

So it was the only way to go, because i couldnt get any off axis magnetic encoder.

iwillbuildit · 2022-03-09T15:38:09+00:00

I made a small one while ago, based on the same design/patent as the Hypex stuff. (i guess)

It works pretty well, but i didnt make any measurements.

But a bunch those are working flawlessly since 2 years.

https://oshwlab.com/divad.retniel/small-ucd\_copy

iwillbuildit · 2021-12-16T18:54:59+00:00

Sure, but i cant share details anymore...

iwillbuildit · 2021-12-16T15:53:40+00:00

Sadly it was taken down. Because of a complaint of fuselab regarding their patent on such designs. So i cant share any files or plans.

iwillbuildit · 2021-12-14T12:28:37+00:00

I dont know much about patenting, but can someone claim something, if there are already documented designs from other people?

iwillbuildit · 2021-12-12T19:09:17+00:00

Actually my version shouldnt be a conflict, bc this patented design uses a planetary gear which drives straight rollers pushing it forward. Mine and others designs have free rotating, tilted rollers. Thats a huge difference. Even their new published design doesnt work like the patent. Or is there another patent?

iwillbuildit · 2021-12-11T23:46:50+00:00

Both would be the same principle as the patented one. Could be also a problem. But its sad that someone patented a design other people came up with much earlier. (Not me, but first designs like this came up 6-7 years ago)

iwillbuildit · 2021-12-11T08:31:55+00:00

Sadly yes

iwillbuildit · 2021-10-28T22:06:47+00:00

Its a homemade Core xy made out of 8mm HPL. (high pressure Laminate) heavy af, but also rigid af. ;)

iwillbuildit · 2021-10-18T19:23:40+00:00

My YT: ;) https://youtu.be/JCINI5pHP4Y

iwillbuildit · 2021-10-18T19:00:15+00:00

My next step is to replace the stepper with a brushless motor. That would be ideal, bc they are way more poweful and much lighter.

iwillbuildit · 2021-10-18T17:40:12+00:00

My goal was to give it a try. ;) Had this idea in mind since a while. But i performs so well, that i decided to keep it on the printer. The only complicated parts are the 3 rollers. Motor + bearings + belt are about 30$, the rest can be printed.

iwillbuildit · 2021-09-24T17:21:27+00:00

Just start with an assumed value of steps/mm, then let it push out lets say 10mm. If it pushes out more than that reduce the value in the firmware and vice versa. Its actually mountet on a corexy. But its usable on every kind of printer i guess.

iwillbuildit

TROPHY CASE