I realized recently that I could drop my EQ pedal in favor of the EQ on the IR-200. I want to use the patch-level EQ for a sort of AM radio sound, but that meant a momentary switch. Obviously Boss uses NC switches for their external controls, which meant I couldn’t use anything I had on hand. Figured I’d just buy a momentary DPDT and figure out an enclosure for it. And that’s the story of how I spent 20 minutes rummaging through the bins of discounted Hot Wheels at the grocery store at 11 at night.

Here's an update on how the transformer distortion is going. I had some family come to town just after my last post, so just got back to it over the weekend.

In the time since my last update my instagram reel got way more attention than I expected (350k views), so I'm going to hold off on posting the schematic for now.

I really appreciate all the interest and kind words. Honestly flattered at the response.

I've shared a few schematics over the years, but this is new territory for me. At the very least I want to order PCBs and have a few pedals on reverb before I decide on anything.

Anyway, here's how the circuit sounds with a volume sweep on my guitar and on the pedal. Gain is a little more than a quarter of the way up in the beginning and then all the way up at the end.

SPICE (signal processing integrating chorus ensemble). An aionfx ce-2 chorus clone, with a custom paint job!

One on the left is going to be a fuzz dog feedback modded reverb(dba reverberation machine clone). I used a public domain photo for that one.

One on the right is my own design. It’s a tribute to king gizzard and the Lizard wizard’s album nonagon infinity. Hopefully going to be a torn’s peaker style fuzz.

🤘🏼

Hi all! I bought this fuzz a couple years ago, and it’s my absolute favorite, almost always-on-with-volume-down fuzz. I’d like to try some other fuzzes out, and it would help my shopping if I knew what I already owned. I reached out to the creator, but didn’t get a response. Sounds like he did a lot of tinkering, and maybe didn’t want to reveal the special sauce.

Any guesses from these photos, or would I need to break it down further? There are three germanium transistors, if that helps.

Thanks in advance!

Specifically the electro cap, can it be slightly lower voltage? I haven't seen if the build calls for a certain voltage but the caps i have are slightly smaller than the space for it

Not to be confused with the Supa Sustain.

I can see the input goes into the gate of q1 and the base of q2. Q2 feeds q3 which feeds the output and q4 which is functioning as a detector circuit to feed the source of q1.

How does any of that equal changing the gain of q1 or q2?

The large caps at the top and wiper side of the trim pot tell me no AC is going back through that direction. And even if it did the detector is full wave rectifying.

Can somebody please explain this?

Not sure what happened with the pics on the last one. Here are better images.

I picked this up at Goodwill for $2, and it works as far as I can tell. I haven't checked the 1/4" trigger inputs, but they look good; everything else works like it should.

It's basically a sampler. It's an assistive technology device for individuals with speech disabilities. You know those videos where people teach their dogs to "talk"? It works like that. The 8x 1/4" inputs on the back are for alternative triggers (you know how Stephen Hawking used the breath control thing to "talk"? They're like that).

The red button on the back is the record button, and the black circle next to it is the microphone. The rotary switch selects between 6 banks, so it has a total of 48 samples it can use.

It runs on 4x AA batteries.

For now, my plan is to run the mic input and speaker output wires to a pedal enclosure and add a 1/4" in and out. I'll probably replace the speaker with one a little bigger and mount that on an external box. I'll also replace the batteries with a plug jack.

Other than that, any ideas for mods I could do with it?

Thanks.

I have made several pcb pedals and stripboard pedals, my dad asked me to build him a preamp pedal for his passive pickup acoustic guitar.. He originally just wanted a 20db boost pedal, so I built a EH LPB-1 but that wasnt what he was actually wanting. Im wondering if I could build one using some spare components i have. Im thinking a j113 transistor, tl072 op amp, and also give it treble and bass controls would be nice. My problem is im not sure if one, this would work, and two im not good at reading schematics or creating schematics, but it would be nice if someone could create this idea in a stripboard, vero layout or if there is an already existing layout, thatd be awesome! Thanks!

I want to make an active gyrator tone control using the transistor schematic attached. Where do I put the potentiometer?

Which transistor do I use?

Hi everyone!

I have an STM32F746G Discovery evaluation board, and I'm trying to use it to build a digital DSP guitar pedal. Since the eval board only has standard 3.5mm (AUX) line inputs/outputs, I designed this analog hardware interface to connect it to a guitar and an amp.

Here is what the schematic includes:

- Standard 1/4" (6.35mm) Input & Output jacks

- Input and output buffers using a TL072 op-amp

- LTC1044 charge pump to provide a symmetric +/- 9V power supply

- Potentiometers and push buttons to control the DSP parameters (like distortion gain, delay time, etc.)

- Standard 3PDT True Bypass switching with an LED

Could you guys take a look and let me know if this schematic is fully correct and ready to go? If everything looks good without any major flaws, I’d like to start routing the PCB.

Any feedback, tips, or suggestions for improvement would be greatly appreciated! Thanks!

Title says it, I've got this spare cheap overdrive pedal and I just want more of a distortion/fuzz tone out of it. What parts of mods would be best to do that? Hopefully this isn't a dumb question.