What’s on *YOUR* workbench?

Dysvalence said:
Recently got a cheap gpio header interface for my rpi3 to experiment with banging my head on the wall over repo/driver configuration problems the various developments in the pi plugins space before deciding if I wanna go all out with a pi5 based modeler or just have something pi3 or pi zero based to cover tuning or time effects. Currently experimenting with piOS lite+pipedal+NAM and trying to get it in a stable config before I wire it up, though I'll probably also try ElkOS+sushi+Proteus at some point.View attachment 63780
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Someone totally needs to make a Germanium Pi.
 
Man, I've spent a lot of time troubleshooting the Viceroy now, and I have just one question.

Why can't anyone tell me how the hell would I compare the electrical characteristics of JFET's to see how much amplification each one has?

Q1 is now correctly biased and the pedal sorta works, but only really if I dime the gain, level and juice. Then it's a low-ish gain pedal with juice toggled off, and a medium gain pedal with juice on. But drop gain or level any lower and it just starts sucking.

So it sorta looks like maybe the MMBF4393LT1 is not a substitute for a PF5102 gain wise? That would at least explain the issues I'm having. Either that or I'm losing too much gain in the bass/treble parts, I'll probably check those components again to double check that everything is correct. I've got some extra 2N5457's on the way which supposedly should work as a substitute, so maybe I'll try those next if I don't find anything wrong otherwise.
 
Fama said:
Man, I've spent a lot of time troubleshooting the Viceroy now, and I have just one question.

Why can't anyone tell me how the hell would I compare the electrical characteristics of JFET's to see how much amplification each one has?

Q1 is now correctly biased and the pedal sorta works, but only really if I dime the gain, level and juice. Then it's a low-ish gain pedal with juice toggled off, and a medium gain pedal with juice on. But drop gain or level any lower and it just starts sucking.

So it sorta looks like maybe the MMBF4393LT1 is not a substitute for a PF5102 gain wise? That would at least explain the issues I'm having. Either that or I'm losing too much gain in the bass/treble parts, I'll probably check those components again to double check that everything is correct. I've got some extra 2N5457's on the way which supposedly should work as a substitute, so maybe I'll try those next if I don't find anything wrong otherwise.
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I'm not your guy for IEEE insights but after you check values you might want to start a troubleshooting thread and post some photos to get more eyes on the problem.
 
jhaneyzz said:
I'm not your guy for IEEE insights but after you check values you might want to start a troubleshooting thread and post some photos to get more eyes on the problem.
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The problem there is that it looks like shit after some of the reworking I've done :ROFLMAO:
 
Fizz said:
It didn't take you long to become an expert! This looks amazing.
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PunchySunshine said:
That blue grey has a total 50s vibe that I love! Reminds me of the blue on the speaker I just polished up after pulling it from a danelecteo challenger. Keep it up Stevie! Yer killin it!
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Thank you guys for the kind words! I’m in the middle of powder coating so I’ll post another color way here soon!
 
Erik S said:
My beloved Shika is on the bench.

She’s been cutting out in bypass. Couple clicks on the switch and she’d come back. Thought I finally got a bum 3pdt and was gonna have to replace it until I pulled out the loupe for a closer look.

Looks great right?

View attachment 63804

ummmm… nope
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I'm not sure if it's a good idea in general since I could introduce more cracks or similar, but usually after I've soldered wires to footswitches, I let them cool for a bit and then give the cable a little tug with pliers, just to see if something like that is happening. Or since I use solid core wire, if the wire is only attached on one end I'll twist it around - it's easy to feel whether it spins too easily (as in, the joint has some give) or not.
 
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