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Making my first CMoy (Work in progress)

post #1 of 8
6/16/11 at 9:06pm
Thread Starter 

Hey all, I'm making my first CMoy amp and just wanted to post some pics of my progress. I'm sure this has been done a million times but I wanted to make sure I'm doing it right. Experts, feel free to chime in for feedback.

 

Much thanks to Fred_fred2004 for the pcb layout and help, you rock!

 

P6163025.jpg

 

P6163027.jpg

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post #2 of 8
6/16/11 at 10:04pm

Looks good :-)

 

make sure the board out line doesn't short any tracks

 

cheers

FRED

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post #3 of 8
6/17/11 at 4:34am

Your etching looks good.

To avoid the situation Fred_Fred mentioned, I just use marks in

the corners like this:

 

Voltage trigger SMD Board.png

 

The corner marks are in the "49 Reference" layer

so they don't go to the board house by accident...

When I print the design, I don't print the "Dimension"

layer, but do print the "Reference" layer. For the board

house, it's the "Dimension" layer and not the "Reference"

layer wink_face.gif


Edited by Avro_Arrow - 6/17/11 at 4:37am
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post #4 of 8
6/17/11 at 8:58am
Thread Starter 

@Fred_fred2004     
Thanks again, you da man!

@Avro_Arrow
Thanks for the tip! I'm just getting into pcb design softwares, so for this version I just printed directly from the provided layout pdf. In the past I've manually created my pcb layouts via Illustrator. Man that was time consuming.

I wasn't too worried about manually cleaning up the outlines afterward because this is mainly for testing and positioning. I have a better fr4 board waiting for the final piece :)

I'll keep the crop marks tip in mind for the next etching

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post #5 of 8
6/24/11 at 9:11pm
Thread Starter 

Here's a bit of progress. I am missing a couple items since I only searched for parts an electronics store locally. I'm not sure if I can find the rail splitter and op amp around here....

 

I'm anxious to get this done!

 

P6243050.JPG

P6243051.JPG

P6243055.JPG

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post #6 of 8
6/25/11 at 1:37am

If your really stuck for a rail splitter, you can use 2 resistors, mount them vertically on the board

 

cheers

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post #7 of 8
6/25/11 at 3:37am

Looks good. I see you have a nice carbide drill bit. I got a set of carbides from Drill Bit City.

"Around here" for most of us is Digi-key or Mouser.

Don't forget to clean the board with IsoProplyl Alcohol when you are done. I like to use

the 99% stuff. An old tooth brush works great for scrubbing it.
 

Quote:
Originally Posted by zammykoo View Post

Here's a bit of progress. I am missing a couple items since I only searched for parts an electronics store locally. I'm not sure if I can find the rail splitter and op amp around here....

 

I'm anxious to get this done!

 

P6243050.JPG

P6243051.JPG

P6243055.JPG



 

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post #8 of 8
6/25/11 at 9:53am
Thread Starter 
Quote:
Originally Posted by Fred_fred2004 View Post

If your really stuck for a rail splitter, you can use 2 resistors, mount them vertically on the board

 

cheers


Oh cool, would I be using 4.7k?

 



Quote:
Originally Posted by Avro_Arrow View Post

Looks good. I see you have a nice carbide drill bit. I got a set of carbides from Drill Bit City.

"Around here" for most of us is Digi-key or Mouser.

Don't forget to clean the board with IsoProplyl Alcohol when you are done. I like to use

the 99% stuff. An old tooth brush works great for scrubbing it.
 



 


Thanks, yep its a simple Dremel press setup with carbide bits, I love it.

 

And I meant "around here" as in local stores. I've ordered parts from mouser before but wanted to make sure I can do my first one before buying more.


Edited by zammykoo - 6/25/11 at 12:20pm
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