Etc.! 9MM clone PCB pot
Power Supply for PAIA Fracrak


I buy a fair amount of parts from Small Bear Electronics including their 9mm right angle PCB pots--they have single, dual, and concentric. Very useful for audio DIY--and affordable! Unfortunately I couldn't find an existing library with these parts. It should be out there right? I am sure it is but I couldn't find it!

So, I created my own Eagle library for this. You can get it off Github. A description of this library and basics about library creation can be found in the Audiodiwhy blog. As always if you find problems etc. let me know by commenting on the blog and I'll fix 'em.

Files to download:

To test this new library, I created a "proof of concept" PCB, zip of an Eagle schematic and brd file can be downloaded here. You'll probably want to modify the board before creating gerbers--I can see adding dupont connectors for instance vs. what I have here. I have now created a few projects using these library components and they work very well, the world is a good place.

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PAIA +/- 15V Powersupply for Fracrak--Drop in Replacement

For better or worse I eschewed Eurorack, 5U etc. for an old childhood friend: PAIA.But! You can buy various power supplies from PAIA but nevertheless I created my own. You can read a bit more about this drop-in replacement psup here.

The stuffed board is a fit for a standard 3U FrakRack enclosure. I have built this a few times now and everything lines up. Power it from a 18V 1A AC wall wart....I have seen 12V 1A work but size matters here.) Put an SPST switch in between the wart and the board's "+ in" to interrupt the AC flow to the board for power on-off.

As far as the cap values: As per my blog entry about this the cap values aren't critical for most situations. I have used anything reasonably close in value I have lying around and it's worked fine.

Go getim time:

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