Psychtar and SSWSMS PCB layouts required

[Austin73]

Does anybody have a working PCB layout for Tim's Psychtar and Super Simple Square Wave Made Simpler?

Cheers

Aus

[GREEN FUZ]

As it happens I was in the middle of doing a Psychtar layout for myself. It will have to wait til tomorrow for confirmation. In the meantime if anyone could give it the once over to see if there`s anything I missed it would be much appreciated. Might save me a few tears aswell.

The main area of doubt for me is the switching and I`m also not convinced about the placement of C5.



The original schematic can be found here.

http://www.geocities.com/tpe123/folkurban/fuzz/snippets.html

Near the bottom of the page.

[GREEN FUZ]

Just thought I`d give this a quick nudge before committing to it. I realise it`s probably old hat to a lot of forum members but some newbies might appreciate a PCB layout and you wouldn`t want a grown man to cry now would you?

[Austin73]

Had a quick look at it last night and compared it to the schem , seems to be good except like you I can never work out the switch thing. Will ask one of my friends just to check over again then I'll be back to you

Cheers

Aus

[GREEN FUZ]

I`m just about to etch the PCB. I`ll keep you posted.

[GREEN FUZ]

Right, don`t know if you`re still interested as it`s been a while and it has taken me longer than anticipated but there is now a working layout in the gallery.

http://aronnelson.com/gallery/album174

When I say working I need to add the caveat that I still have some doubts. The switching definitely works and swaps between the recognized " sitar" sound and another distinctive sound. This is where my doubts come in. I didn`t have any 1n34 diodes so I just threw in whatever I had to hand. I can`t remember but I think they are 1n914`s. This resulted in a rich, responsive fuzz sound. All fine. The problem is, today I noticed they were in the wrong way round as indicated by the schematic so I desoldered them and oriented them correctly. In doing so I managed to lift a few traces and basically make a hash of the board. I`m really not sure if what I`m now getting is the way it should sound.

What I will say in conclusion is that with the right components I am pretty confident it will work. I`ve ordered some correct diodes and I`m going to etch another board. Full report to follow.