PCB for Cmoy?

[kloan]

I want to build another Cmoy, but I hate working with those protoboards... are there any PCBs available to build a Cmoy?

 

[null]

talk to marios_mar, maybe he can hook you up...

 

[tess]

Have a look here,

http://www6.head-fi.org/forums/showthread.php?t=87056

It’s designed by Guzzler, and he has the eagle file to download on that thread.
The pictures are of my board and amp built from Guzzlers design.

works very well, and as you say is a lot neater than protoboard layouts.

Alan.

 

[kloan]

thanks null, i sent him a pm.. he's all out except for 1 (slightly use)

hey tess, ive seen that thread and actually forgot i downloaded the eagle file already.. but i dunno if i wanna etch my own board.. it'd be cool n all, but i dunno how much id have to spend on the chemicals/parts to do it.. kinda low on cash.. somethin to consider i guess...

do you how people print the white labelling on the boards after they're etched? is it the same thing as etching, by using a transparency and uv light?

 

[guzzler]

The text/image layer is called the silkscreen, and I've not heard any way of doing it at home, but it is AFAIK a lithographic process. Not really that important though

g

 

[tess]

Guzzler,
your design seem to causing quite a stir again.
I didn't do it with your board, but I have with larger boards.
Its the old laser print on inkjet paper tip.
after your first etch just laser print the silkscreen design onto inkjet paper and line up with board and iron on top.

Alan.

 

[kloan]

ah, cool! i must try this soon... i have no idea where to find the chemicals though.. i'll start looking..

 

[tangent]

Quote:

The text/image layer is called the silkscreen, and I've not heard any way of doing it at home

Silkscreening can indeed be done at home. It's the same process as is used to make single-color T-shirts. Some acquaintances of mine do that as a side business, at events...T-shirts made up for the event, printed up on the spot. I'd guess the silkscreening setup costs a couple of hundred bucks.

The hard part isn't applying the silkscreen, but cutting the silkscreen! It's literally a sheet of silk stretched taut over a frame, with holes cut in it to block or pass the goo in the pattern you want.

 

[Earwax]

It seems like you could also build a cmoy on one of tangents MINT boards by jumpering over the buffers, skipping R4 and changing the rest of the resistors to appropriate values. ( I haven't actually tried it myself)

 

[Megaptera]

Of course, if you're doing that, it's probably worth putting down the extra money for the buffers and turning it into a full MINT.