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If I were to purchase diodes in bulk from India through eBay that claim to be genuine germanium diodes, what are the chances that I would be getting a genuine product and how will I know the difference. Also, what are tariffs like from India? I’d be purchasing 1000 diodes for $200-$400.

Is there a UV printer in the $3k price range you recommend for printing on enclosures?

Hi, I’m trying to figure out what type of noise this is so that I can try to fix it. Does anyone recognize what this is? See video: Maybe DC voltage getting on it, or maybe high frequency oscillation? I don’t know enough about what I’m listening for to diagnose. This is a design I came up...

I am attempting to build a Blue Yonder from the schematic. For Q1 and Q2, I’m using 2SK30A JFETs. I’ve noticed it is working, but quieter when the pedal is engaged in comparison to it being bypassed. Is there a resistor value I can swap to affect output volume? Also, leg 1 of these trim pots go...

Hi, I built this fuzz circuit tonight and am wondering how to change the bias on it. It just isn’t quite fuzzy enough, sounds a bit choked and Velcroy, spitty. Here is the schematic. For Q1 & Q2 I’ve got hFE values of 354. For Q3 I’ve got an hFE value of 320. Also, I had to sub the 500k...

Anyone want to recommend a PedalPCB board that would work best as an EQ for upright bass?

For the optical part of the GeneralTSO, it says to use a 5mm Green LED. Does it matter if the LED is clear when it is off? I have both the green tinted ones and the clear bright ones. The tinted ones are diffused and the clear ones are not diffused. Both are green when lit.

I didn’t have a lug version of the potentiometer I needed. So, I removed the legs from a PCB mount version of the values I needed. (See photos.) When I soldered wire to it I either destroyed the pot or couldn’t get a good connection. Is there a good way to solder to a pot where the legs have...

Does changing modes reset the controls positions on Spatialist? In other words, if I have the control 1, 2, & 3 where I like them and then switch modes, then switch back, do the values get reset where I’ll need to move them around to the settings back? … What if I unplug power and plug it back...

What would happen if I used a B25K potentiometer in a Sproing Reverb instead of the suggested A10k potentiometer?

I’m wondering what a good “first pedal” or “desert island pedal” for a bass player pedal would be. I’m building a pedal for a friend who plays bass and doesn’t have any pedals yet. I know bass players love the MXR Phase 90. I also know they love fuzz, and overdrive (like maybe a Kliche with the...

Hi. I’ve been trying to figure out how I can use the Arachnid to make a single-patch FV-1 without loading in all of the diodes. Instead of the rotating 8-mode switcher, I hard wired what I believed to be patch zero in the EEPROM bank. I’m new to this so what am I missing? The schematic shows...

I wired this up and later realized I wired the in and out grounds to the wrong jacks. The ground wire for the input jack is wired to the ground lug on the output jack and vice versa. (In other words the grounds are swapped.) Is it worth the effort for me to rewire those grounds or does it even...

When working with a perf board where the pads are isolated like this (see attached image), is it best to bridge the solder between connecting pads or is it better to bend the leads over and use that wire to make the connection?

I need a simple and clear one knob boost for a mandolin. I have a stash of TL071 op amps and wondering if you have a PCB that uses that component in a simple, one-knob boost.

I just built a rat on perf board, but when I test it, I get no sound until I pull the power plug out of the unit. When I pull the power cable out of the pedal, I hear the pedal working beautifully for a second or two. What is a common cause of this?

Having trouble reading this schematic. What is going on with pin 5 here? (Muroidea circuit) Is it going nowhere?

I’m thinking about building a reverb pedal for vocals. (FV1) This means I would be working with XLR instead of 1/4” mono guitar jacks. What are some things I need to consider when designing a circuit with XLR jacks? For example, I imagine I will need to keep power negative and earth separated...

Today I bought the Spatialist. I will only need to use the shimmer mode patch. How could I modify it to not use the rotary switch but just hard wire it to always be in shimmer mode?

Where can I get a soldering sponge that doesn’t have a donut hole in the middle of it?