Dam Drag'n'Fly PCB

Started by clamup1, January 18, 2011, 01:53:12 PM

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dumbmonkey

just out of curiosity, what one looking for when adjusting the trim, and is the NPN Germ essential for this circuit?

clamup1

i think the npn germ is part of the pedals "mojo".

Jhouse

Adjust that bad boy until it sounds good!

I think the whole purpose of this pedal is to combine the bite of a silicon transistor with the warmth of a germ transistor.

BarnyardBill

this looks like my kinda circuit. :)  I am not much into flangers, octaves, or even wahs, but I do love a great sounding overdrive or fuzz pedal.  Any soundclips or video of this circuit?  Also, I just want to make sure, Q1 is above Q2 on the layout right?  I really like the look of this software too.  Nice colors.  :)  I have been wanting to make a Ge circuit bit I don't fully understand the reverse polarity of the FuzzFace.  This one is standard polarity right?

Thanks,

Bill

Jhouse

#24
Youtube is the god of pedal demos
I'm not too fond of that demo, but look around youtube and you'll find some GOOD STUFF.

Yeah Q1 is above Q2. Sorry that you can't really see that. I threw it together fairly quickly trying to intercept Chris from etching is board. I was too late though. You'll have to check the pinouts of your transistors and verify them to the schematic though. I wasn't sure what transistors are used, but this circuit assumes that Q1 is EBC from the flat side facing forward and Q2 is CBE from the flat side facing forward

Yeah, it's negative ground.

clamup1

i have a layout that i used for PNP (pos ground) if you want to give it a go.

clamup1

#26
Quote from: Jhouse on January 21, 2011, 08:14:47 PM
Dang it. I screwed up on that last layout. I put 2 C4's and messed up 1 trace that would throw the whole pedal off.  :icon_rolleyes: Oh well. Here's a new layout. I hope you didn't etch the board yet.

Also, on this one R3 should be 1m. Man I didn't check this at all.  :-[




hey im having probs with this. im not getting any sound. what hooks to the pad to the right of R6? i have v+ hooked to the top left pad and the ground hooked to the pad on bot left.

clamup1

#27
i have replaced r1,r2,c6, and d1 with new parts. i took out all the parts on the power trace and replaced them one at a time starting with d1. after soldering in a part i check the ground and get nothing until i put in r1. then i get 8.42 on the ground. there are no solder bridges or flux bridges.

is 10k not big enough? the guy who mad the pcb for me made two and they both worked. maybe i need to start over.