EXAMPLE Developing a custom pcb for Daisy Seed - Funbox

[xconverge]

Hi everyone!

I'm new to pedal building, I started about three months ago and have built around 30 pedals so far. I began with some Pedal Mania boards, but almost gave up right away because my first two builds didn’t work. Then, I switched to Five Cats PCBs and had success, followed by some Moonn Electronics projects. A couple of weeks ago, I picked up about 10 PedalPCB boards and have already built three of them.

I've used this forum several times for information, so a big thanks to everyone!

Lately, I’ve also gotten into stripboard and more diy builds, which led me to discover the Funbox. Most of my builds have been overdrives, fuzzes, and distortions since modulation and spatial effects tend to be more expensive. I thought the Funbox would be a great addition to my setup, so I ordered the boards from pcbway and I gathered enough materials for three builds and completed my first one yesterday.

The build process was straightforward, and the instructions were clear, thanks a lot for that. I assembled everything, loaded the software onto the Daisy Seed, and it worked! but unfortunately, there's a very loud hissing noise throughout. I used the latest components and also tried a TL072, but no luck.

I’m not experienced enough to pinpoint the issue. The only deviation I made was using stranded tin wire instead of the recommended solid core wire, but otherwise, I used all the correct components. The hissing occurs even when the pedal is bypassed, though it gets significantly louder when engaged. I’ve tested the Earth, Mercury, and Neptune modules, and all have the same issue, so I don’t think the Daisy Seed is the problem.

Any ideas on what might be causing this?

I would peek through here and see if it sounds familiar https://forum.pedalpcb.com/threads/...-im-getting-unusually-bad-noise-solved.21901/

 

[Cwallmeier]

Thanks for the reply!

I'm actually using the Funbox PCB, not the Terrarium. To be honest, I had already checked out that thread, but the noise in those examples is quite different from what I’m experiencing.

The sound I’m getting is more of a high-pitched feedback with a bit of underlying noise, kind of like a hiss, which is why I described it that way. The Terrarium examples have a more typical kind of noise.

I’ve socketed all the ICs and tried swapping in three different ones for each position, so I’ve ruled out damaged chips. The feedback is still there regardless.

I’m planning to record a video of the sound tonight or tomorrow, maybe someone will recognize it and have some insight.

-Here’s what I’ve tried so far:
-Checked and replaced the jacks
-Reflowed all the solder joints
-Swapped out each IC one by one
-Scraped paint off the inside of the enclosure for a solid ground connection
-Searched multiple forums for similar issues

It could be a bad cap, but before I go tearing the whole thing apart, I was hoping someone might have a clue about what’s going on or even @keyth72 might have experienced this himself.

Oh I forgot, I don't have TRS cables at the moment to test both changes at the same time but I've wired the jacks multiple times to check both the Right and Left channels separately and both have the same issue.