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will any N-channel MOSFET work for the ground switch, or are there specific specs i should be looking for?

i have a couple of basic questions to help me understand the circuit and make sure i've wired it up correctly and not backwards (i.e. LED turns on in bypass mode) -- the datasheets show the positions of the switches in "energized" and "non-energized" states for the coil which is connected to...

should i have any series resistor for the relay power, or just skip it entirely? and are 100u+100n the right filtering caps for the relay?

okay, here is my full circuit for my input-output and switching board. it has input, output, DC jack, power conditioning, LED and switching on one board, gives the option of true or buffered bypass, grounds the pedal input in bypass mode and bypass buffer in true bypass mode, and leaves the...

i'd like to know more about your approach to using JST connectors. it's also what i'd like to do, but i'm worried that stacking the boards directly with pin-to-socket connectors might put too much mechanical strain on the boards and i'd rather have them connected by a ribbon cable, but without...

would this apply to any manufacturer's capacitor of the same specs and package? or just murata's?

i remember reading about that on electric druid's page about designing a tubescreamer-style overdrive pedal, but re-reading it now all it really says is that the FET switches need isolating from the outside world. doesn't go into details. i think the little SPDT diagrams on the CD4053 circuit i...

is this not true bypass with a CD4053?

also, i'm sure this has been covered extensively elsewhere (so please feel free to just drop a link), but what is the advantage of using a relay over, say, a CD4053?

i'm guessing there isn't an equivalent of a CD40106 with less inverters in it in a smaller package? say, a 3x in a DIP-8 or even a dual in a DIP-6?

Well that seems a lot simpler than the other CMOS+MOSFET circuits posted or referenced by lowpitch. what is the purpose of the other MOSFETs and BJT on those designs and why aren't they needed for this one?

what are the advantages of this over the 555 relay circuit?

where can i find that?

@Chuck D. Bones still wondering about those first two questions. I think I figured out the third.

i've got another question: how can i be certain i have the right footprint for the PCBA part? i wish that was a feature of the bouni JLCPCB plugin. for instance, for a reverse-polarity protection diode, there are no 1n5817s available in basic, but there is this 1n5819 which as far as i can...

over spec by how much? and how stable would that make them?

the conventional wisdom i've seen repeated in multiple places is that C0G/NP0s are fine for the signal path but X7Rs and worse are too unstable in their capacitance to use for the signal path. and C0G/NP0 pretty much only exists in the pF range. X7Rs are totally fine for a 100nF power filter...

it doesn't have to be SMD, but i know that there are tons of pedal companies doing everything SMD, quite a few of them are getting their PCBs made through JLC, and using SMD 1uF caps in the signal path, so i'm wondering what they're doing. i can't find any good 1uF SMD options on JLC other than...

i'm curious if there are any good SMD choices for 1uF caps in the signal path. should i just go with electrolytic?

it looks like the 555 is switching the ground for the LED, so it shouldn't affect anything negatively to just switch the current source from Vdd to the LFO, right?