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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?

This is a question for those of you who sell pedals. I’m wondering if people are typically willing to pay more for pedals that have effects created by the FV-1 chip. Those chips are pricey, and I’m wondering if there is a good chance of recouping the extra cost or if people just expect them to...

Are these the same. The price is different but they look the same. I don’t mind the extra cost if it is a higher quality switch. https://www.taydaelectronics.com/3pdt-stomp-foot-pedal-switch.html vs...

What ballpark should I aim for with the 2N2222A in the Dragon’s Breath. I have quite a range of options. Is lower or higher better (for that circuit)?

What would happen if I changed the 100k pot to a 25k pot for the output volume control? (On the Muroidea)

I treated myself to purchasing one of these desoldering pumps on Amazon. Has anyone else tried these? I think it’s terrible. Wondering if I’m missing something. The tips aren’t pointed enough to get into small areas so it is hard to aim and not burn stuff. It also takes too long to melt the...

I’ve noticed that sometimes the solder pools on both sides of the PCB and sometimes it does not. Is it ok if the solder pools on the side you are working with but does not flow all the way through to pool around the pad on the other side? See attachment for example.

Am I supposed to add a component here?

Trying to breadboard a delay circuit for the first time. This 33R resistor keeps going up in smoke. I don’t expect anyone to deconstruct this whole breadboard, but am wondering common causes that I could double-check.

I may be in the market to buy some diodes soon. I’ve heard so much negativity about buying diodes on EBay. I just wonder if there is any way to tell if they are going to be fake or real before purchasing. I see posts like this (see attached screenshot) all the time and they look good in the...

I assume that if there is no little black node on the intersecting lines, it means there is no connection, correct? So like, here, where the intersection happens, it is just that there wasn’t room to draw where it goes without crossing over a line, but those wouldn’t connect.

I’m used to being spoon-fed the transistor part list, but here I have a value range and not sure what it means. I think it means “any transistor with an HFE in this range” but not sure. For example, see Q1 here. I think it wants any transistor (NPN) with an HFE ranging from 140-200. Am I correct?