FEMTOVERB /Wavefrontsemi/ PCB layout

QSQCaito · August 04, 2006, 12:05:41 PM

Ok thanks a lot. I've got a problem, i can't find the components. I'll have to wait until my dad goes to USA or a friend, he's a pilot that's why

Do you know the difficulty grade of this project, or anyone that finished it to ask for it, or for pics?

Thanks a lot

Bye bye

Dac

MetalGuy · August 04, 2006, 04:23:45 PM

As Peter said if you read the whole thread you'll find answers to most of your questions including pictures.

pedaltastic · August 23, 2006, 09:41:02 PM

Hi, wow - that's a great looking project, nice one metalguy!

How much did it cost you to make in total?

puretube · September 05, 2006, 11:01:16 AM

got a few sets of the 3 needed ICs... PM me.

puretube · September 06, 2006, 05:17:29 AM

or check here: For Sale

ranchak · November 25, 2006, 05:38:19 PM

Would you be able to post a link to the PCB layout in PDF form (hopefully to scale)? Thanks

Bornhorst · November 29, 2006, 03:21:49 PM

Allied is out of the suggested encoder.

Do you think that this is a suitable alternative?
Digikey part # - CT3003-ND
Its described as a "ROTARY ENCODER 4 BIT GREY CODE"

MetalGuy · November 29, 2006, 04:28:09 PM

QuoteWould you be able to post a link to the PCB layout in PDF form (hopefully to scale)? Thanks

I don't have it in PDF form but you can scale it down in Photoshop, Paint Shop Pro or similar by setting the resolution to 600dpi.
Hope this helps.

Bornhorst · November 29, 2006, 04:43:06 PM

Here's the pdf I made.

* Make sure that scaling is off when you print

http://www.cs.utexas.edu/~dtb/Femtoverb_solder_500dpi.pdf

enjoy!

ranchak · November 30, 2006, 11:34:08 PM

Thank you. It worked perfectly.

Bornhorst · December 06, 2006, 07:06:43 AM

Glad I could help!

Does anyone know if Digikey part # - CT3003-ND will work for the encoder?

Allied isnt getting another shipment of the honeywells until Feb 7th.

Thanks!

fabricio · December 11, 2006, 04:59:06 AM

hello i'm fabricio from france
thank to pure tube who send me some chipset
thank to metalguy who designed the pcb
femtoverb is working. nice job. I just want the reverb preset so i use the rotary switch method (good idee work perfectly)
just one probleme : there is a "plop" when i switch on the pedal. What wrong ?

excuse for my english

fabricio · December 18, 2006, 07:57:49 AM

nobody ?

TELEFUNKON · December 18, 2006, 12:50:11 PM

from a look at the layout in reply#9
it seems that the input cap is floating.
(can`t find the schemo)

a so called pulldown resistor (1M) from input to ground will probably work.

MetalGuy · December 18, 2006, 04:24:52 PM

The final correct layout is Reply #48.

TELEFUNKON · December 18, 2006, 04:38:33 PM

that one also got input cap floating.
solder 1M from input pad to ground.

MetalGuy · December 19, 2006, 04:35:00 PM

According to the schematic the 1M resistor after the input cap connects to Vr, not to ground and it's exactly where it connects now.

TELEFUNKON · December 19, 2006, 05:13:12 PM

but before the input cap?
(where popping originates).

MetalGuy · December 20, 2006, 04:19:34 PM

There's no such on the schematic but if you want to add one it's OK.

TELEFUNKON · December 20, 2006, 04:36:15 PM

ok - after waiting half an hour for the board to get back to life
and going through 50 replies
and the search function
I finally found the schematic drawing:
http://dstockett.50megs.com/femtoverb.gif

It`s not just "OK" to add a pulldown resistor at the input,
but "a must" IMHO.

you`re not to blame for that, MetalGuy, BTW.

News:

FEMTOVERB /Wavefrontsemi/ PCB layout