UGLYFACE PCB Verification pleeessee

[shanter]

Hey,
   I drew up this PCB layout of the uglyface and im hoping someone can verify it for me. its my first time making a PCB in PCB Express  so i jsut wanna make sure i got it all right.

   And...does anyone know how i can export this to Photoshop? I'm just taking screen dumps now and patching them together at 600 DPI. It's a vetor-based prgram so  i assume there MUST be a way to export.

   Also i just won a broken GCB-95 from ebay and im going to house the pedal in that and have the frequency controlled by the pedal. The only problem i can think of is that i wont be getting the FULL range of frequency if i do this. Is there a different value (other than 100k) i can go with that would supplement the problem?

[NoFi]

I didn't verify the whole circuit but you have a simple problem at the diode.
I don't really uderstand the point of all those ground planes, BUT anyway...
To export your design from ExpressPCB you have to print the file, but unselect your printer. Windows will record the file with the .mdi extension.
If photoshop is not capable of reading the file at this stage, you have to open it with Microsoft Office Document Imaging and figure out how to save it so that photoshop can open it (in the advanced options when you save the file i think).
Quite complicated. But better than with the previous version that only allowed a sort of grayed out printing.

[shanter]

thanks nofi,
i was unsure about the diode so thanks for pointing that out.

i just like the way the ground planes look    and it requires less time for the PCB to etch which causes less problems.

i tried the print thing and it did work, but it exports it as non-vector so i guess it doesnt have that feature.

[no one ever]

thanks nofi,
i was unsure about the diode so thanks for pointing that out.

i just like the way the ground planes look    and it requires less time for the PCB to etch which causes less problems.

i tried the print thing and it did work, but it exports it as non-vector so i guess it doesnt have that feature.

can't you move the 22uf cap to the left and move the trace around it instead of using the jumper?

[shanter]

aight cool, fixed it ....didn't even notice it before.
the less i have to drill, the better it is.

-shant

[lethargytartare]

I built mine on another board that's out there -- really funky organic looking thing...and the board itself was given to me by another very cool DIYer (board and optocoupler, in fact).  But my comment is on the pedal side --

Recently I added an expression pedal to it, and specifically I put it on the frequency pot -- neat coincidence, eh?  I used a gutted cry baby to do it, and the pot is, I think, 100K.  Adjusting the position of the pot and gear is tricky, but I found the problem to be that the pedal swings through the values too fast.  Maybe a circuit board in there would let you control the sweep (like a wah), or maybe what would be better is a higher gear ratio or something...in any event, it's really cool, and has a theramin-like effect, but it's tough to control...oh, and it's dangerous.  I whupped mine out at a jam in a basement on a cement floor...and I had forgotten to put the feet back on it...so I went to wail away on it, but it skidded out from under me and I almost ripped my own left leg off...pretty funny.  So, remember that -- expression pedals are NOT TOYS!

My next few plans  for my UF (since it's by far my favorite pedal) -- a stomp to bump up the threshold value up into the self-oscillating range -- so you can instantly go from a non-osc. to an osc. range on the fly.  And you know what -- with a wah, you could still keep this all in one pedal.  So you have the wah pot control the frequency, and then you put a stomp in the normal place, but what it does is jumps the Threshhold into the oscillating range...that'd be pretty cool...my pedal is actually really big, so I have plenty of room for extra stomps:

http://www.lethargytartare.com/caves/gerbcave/diystory/diy-3.html

but my ultimate vision is to have expression pedals for all three pots, and to have this thing in its own carrying case...just a big octopus of rock doom!

Good luck!  post your results if you can!

ltt

[shanter]

haha, thats really awesome lethargy, i was trying to think of way where i could have an extra stomp that deactivated the frequecy pot as the sweep and sets it to another pot already positioned to a setting and flips the sweep to the wah circuit so i can get a crazy over the top wah sound. but i think it might be a bit too complicated for me. plus i want to house it all the crybaby and i cant think of a logical place to put it where it wouldnt get accidentally hit.

and about the cicuit controlled sweep...how would that work out?