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No idea yet what is causing the oscillation as replacing the resistor didn't change anything. The oscillation stopping when I put my finger on the resistor was a mistake on my part - I get the same result when I touch the middle pin of the drive pot with my fingertip, which I may have done...

Well my movement theory can't be true, it's already missing in that first picture I posted 😲🤔 How did I not notice that?

So I got the back off this pedal this morning. Immediately noticed some of the external coating of the resistor above the drive pot was missing. I'm guessing I accidentally damaged it when soldering in the drive pot, and that subsequent moving and rattling has shaken the coating loose. When I...

It sucks somewhat. I prefer to view these things as learning opportunities. It's also only oscillating at high gain, so it still works fine for most of the tones I'm aiming for out of the pedal. I will definitely check that troublesome spot out, thanks for the tip.

I built a Precision Drive clone (brewed my own PCB) for a friend. He likes it but is wondering if it should have more output volume. I did notice the output volume was lower than I expected, but the pedal still made my amp sims chug so I assumed it was working correctly. Does anyone have...

It oscillates in all 3 positions, but less with the BAT41 pair engaged. I will crack it open and have a look at the board.

I loaned this pedal to one of my students at school and it has been returned in good condition, but now the Southern Belle side is oscillating at high gain, whereas it wasn't before. If I mess with my tone pot while it's oscillating, I can make a sound not unlike a dentists drill 😬 Any advice...

@vigilante398 This is too clean, too pro, Mr Manufacturer 😜 But seriously, nice work. I think I would do the same, if I ever did a mostly SMD layout. Just keep designators for any parts I have to solder on myself. I love what I see on this thread folks 😍😎😁🙏

I haven't posted any of my recent projects, but I've been cooking up some more PCB designs. This one is a higher-gain overdrive based on the Southern Belle/Mach 1 circuit, but with some Timmy features wangled back into the circuit, like the EQ controls and the gain boost. I've also tried to...

Awesome, I love seeing these creative ideas. I'm working on a Mach 1/Southern Belle combination. Because of the compromises it's more SB than M1, but there's a low gain mode with some of the M1 values. I've learned so much from projects like this. That's a cool build. I'm looking forward to...

The creative aspects are more exciting than monotonous assembly for me too. They also cost less money than building a pedal! I do want to be good at the more laborious aspects of the hobby too. Homebrew is generally like farts. You don't mind your own, but you can't stand someone else's.

Agreed, something I love about this place is that it's mostly orientated towards helping folks learn and improve. Doesn't matter if they're 14 or 74. Chuck and Robert are really key in setting the culture here IMO. As a professional educator in my day job, I really appreciate this place for its...

@flemming I can't believe this is the size of the first project you're sending off! My first PCB project was an Em-Drive, it had about 10 parts total and it still didn't work properly 😬 Nice work mate, I hope to see a future build report with this board.

Amazing, thanks Chuck. That makes a lot of sense. The resistor pairs and capacitor pairs are each parallel pairs, and that affects the overall resistance/capacitance of that part of the circuit, forming a new combined filter.

Typo! I lost a B. They are in a 1590BB. Good luck with the cap surgery.

Thanks for this Chuck. I can see in the Tommy schematic that one of the resistors is now a pot and no longer a fixed value. I understand this allows you to manually shift the frequency of the filter. But it raises questions for me, so please forgive my lack of understanding. I think that when...

Welcome to the Greer of Tone club! I made my own PCB for a 2-in-1 of these circuits in a 1590BB. I like them both a lot, in fact the Mach 1 is one of my favourite builds so far. I haven't noticed any high-frequency issues, but the SB can get sizzling, in a good way. I have it set up natively to...

Happy birthday Nick! Glad not only to see the end product but also to hear it as well. I'm glad to see you sticking to your birthday resolutions, I promised myself a Telecaster for my 40th, but February came and went without NGD occurring. Hoping for later this year, if the family budget allows.

Fair enough. Definitely a worthwhile exercise if you ever decide to give it a second chance down the track. I'm really glad I modded mine. The other low gainer I'm excited about is the Super Stevie, probably quite a blues-specific tone, but it has a really nice cranked Fender sound my ear likes.

@jeffwhitfield Have you tried swapping C11 and C12 in your Six String Stinger? I recently swapped mine over and it's now a much better pedal, in fact it hasn't left my pedalboard yet. Eventually I might need to decide between it and a Mach 1.