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Hey folks, I haven't been building pedals for a few years now and it's time to let go of the massive amount of stuff I've collected over the years. I'm not going to individually list out values and what not but rest assured there is enough here to keep you building for quite some time.

Notable items include some nearly finished and unstarted and licensed VFE/MadBean boards/pedals. And all of the chips and things that go with them. Thousands of high quality ICs (multiples of everything), transistors, resistors and capacitors, diodes. Pedal knobs, pots, enclosures, etc. The majority of the resistors and capacitors all came from either DigiKey or Mouser with a smattering of Tayda and Love My Switches.

The RIGOL  DS-1052E oscilloscope has been upgraded to 100Mhz but honestly I never had much time to use it. To my knowledge it works fine. I've fired it up but I am by no means an expert. I bought it for troubleshooting but never got around to finishing the pedal.

$1000 shipped for everything or $750 without the scope. Best Offer. It's a buy everything or nothing situation. I don't want this all sitting in my house any more

Photos
https://ibb.co/BN4fmg9
https://ibb.co/xJjMtJN
https://ibb.co/kgDn8GN
https://ibb.co/jWNQ85Y
https://ibb.co/Nym7Jn0
https://ibb.co/kBvn92D
https://ibb.co/4WX77xR
https://ibb.co/0D5KykW
https://ibb.co/DpVYKqs
https://ibb.co/ZXFY47n
https://ibb.co/6r31pKM
https://ibb.co/6YSW4G4
https://ibb.co/kDtDPqS
https://ibb.co/hcwgXGr

Anyone?

Hello frens!

Put my MiniMu together tonight and she fired up on the first click. Success! Can someone check that I have these optocouplers installed correctly? I think I do. I have the dots lines up like in the build docs. I'm having a heck of a time triggering any kind of filter sound. I can tell the envelope is trying to open but I just can't get anything usable. Any thoughts on tuning?

Arrows are pointing to dots.

Pretty much got the swell dialed in - could be a little closer to perfection but it's def playable. I just have to get it boxed up now! I've re-thought my art concept. I'm going to go with one of those jade/emerald green Gorva boxes and call it the 'Jade Roller'. Kind of a tongue in cheek for those things that chicks use to smooth out their faces.

That did it baby!!!! Now we're cooking with sauce!

Swell is working, though not tuned yet and the level works. This thing gets looooud! So excited!!!

Happy Easter! I predict that the electrons will raise from the grave when I get home from the in-laws later today.

If the relay is upside down then how is any of the signal making it to the board? It's just flowing backwards through the same input and output pins? Somehow inverting the signal or acting as a massive resistor cutting the flow?

I'm still learning to read schematics and understanding what each circuit does. So forgive my ignorance please!

Okay here is a full voltage chart for the switching board. The relay chip seems a little odd (all 0's unless indicated) as well as some of the resistors around it. But maybe I don't know squat. The pedal was switched to power on.

I used my audio probe and as far as I can tell the audio is getting from the switching board to the main board. I could pick up audio coming off the relay chip on the board. Nice and loud and also at the input and output jack wires in bypass and effect mode.

However, once I get on the actual board the audio drops significantly. And I can only get it on the compression side. No audio at all near on the swell circuit from what I can tell.

Just re-read the switching board doc and not many reference voltages laid out except just a few here and there by mention of split power rail/relay voltages. I'll check what I can check when I get home based on that data.

If anyone has some other reference voltages to check I'll do those too!

https://www.madbeanpedals.com/projects/_folders/VFE/pdf/VFE_SBv3.pdf

What measurements on switch board and where? I'm getting signal through the pedal to amp.

Voltages all look normal to me. At least, based on the reference values. The 5088's were all 7.10-7.12v just on the one leg of each component. The other values were very close to 0. The image makes it look like they were *all* 7.xx. But that's a drawing error

I'll repost voltages next -- here are the SMD 2n5457's I measured. I lined up the source, gate, drain with the diagram. Depending on how I orient the chip in the sockets I get different readings.

With S = S, D = D, G = G I get .9v. When I flip it around I get -1.3v. Could someone tell me which way works? When I do the normal through-hole 2N5457 with S=S, D=D, G=G then it gives me 1.1 or 1.2v consistently depending on the component. So that seems fine. If I flip them, as a test like above, I get -1.3v.

stand by for new voltages!

Sending some updated photos in case it helps with troubleshooting. As far as I can tell the compression is working. It's VERY subtle even on full sustain. The level knob seems to do absolutely nothing. All up or all down, no change in output. If I stack the Bumblebee with my AionFX Convex parallel optical compressor I get a TON of tasty squish. And that squish sounds different than if I just have the Convex on. So I can only assume the Bumblee compressor is working. Is there a less subjective way to verify that?

It seems like maybe my problem here is that I just don't have a 2n5457 that is in spec to work. They seem to be dang impossible to find. I've bought 30 surface mounts and all of them are junk. Less than 1.2v or way over 2. Now that I'm looking at the AionFX site where I bought a bunch of these maybe they are fine? I was getting values of -1.3v on a lot of them. That seems like it's right in the 1.25-1.5 range for these.

I'm just really at a loss for what to do now on this pedal.

https://aionfx.com/project/2n5457-jfet/

https://aionfx.com/project/convex-parallel-compressor/

Turns out I'm a fool. I measured all of my 2n5457 incorrectly. They are all less than 1.2vgs. Assuming I am measuring them correctly now anyway — depending on how I put them in I either get -1.3v or 1.2v. Since none of them work I'm going to assume it doesn't really matter what measurement I got.

I just cannot catch a break with this pedal. I designed my artwork wrong too. My board is too far up on the 9v and jacks. So there goes a $20 Gorva out the door.

Does anyone have a few good 2n5457 that work with this pedal I could buy?

Yeah compression seems to work. The pedal actually sounds great just no swell at all, I'd at least as far as I can tell. Nothing like the demo vids on YouTube.