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Without signal through the comapander you won't have anything on the Mix pot or R29.

What are your voltages on the NE570? Can you please provide a pic of that area?

I wouldn't go changing the NE570 until you know what the problem is. Take some voltage measurements, double check the part values to make sure they are correct (R13, R14, C10, C12), double check your soldering and reflow if needed. You should have a fairly large signal coming out of pin7. If everything looks correct and you still don't have signal from pin7 then it could be the IC. Another 570 or an SA571 might be called for.

[Skinflint]

Skinflint
- Based on the mictester Really Cheap Compressor

MN3005 were designed for positive ground so when used as negative ground the power and ground pins are switched as well as the pulldown resistors on the outputs.

It only takes a few minutes to make an audio probe so I suggest doing that then probe the input and outputs of the MN3005 to see if that is the problem area.

Cool. Man what a pain that was I can imagine!

[Gastronomy]

Gastronomy
- Based on the EQD Bellows

Dirtnap
- Based on the Chunk Systems Brown Dog (bass overdrive)

Hi Madbean, thanks for all these recent additions!
I wanted to ask you what was your rules for single sided layout? Trace width, clearance, ground plane, I/O placement, etc. I make single sided layout with KiCad and I want to use your type of design as a kind of standard, to be able to share them with everyone here.

Trace width is usually 24mil except if it's really tight then I go down to 20mil. Ground plane is also 24mil width and isolation except when it's tight then I use 16mil width. I set my grid to the same thing for all layouts - 25 mill size with a multiplier of 4. I/O is generally 9v jack on the left and everything else in the middle (using the bypass supply pins in the MBP library). Sometimes it's a better layout to have the jack at the top but it gets a bit harder to route single sided boards that way in some cases.

[Arsonist]

Arsonist
- Based on the TC Electronic Spark Booster

This topic has been moved to Tech Help.

http://www.madbeanpedals.com/forum/index.php?topic=24897.0

We're famous!! 

Now we just need to work on being infamous!

Posting in a thread.

This is still not quite up to the quality that I'm shooting for but I think I'll get better with a little more practice. I'm just very rusty on Premier and After Effects. And, I think more examples would be better. But, hey - better than what I've been doing!

That's freakin awesome. What's the acoustic bass? I need one of those someday.

I fixed the problem of the Fuzz pot being reversed and also added 1M pulldown resistors to the input and output (like the Woodstork). Lastly, I updated to the current library.

[Angler]

Angler
- Based on the Mad Professor Sea Blue EQ