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Mini Blue aka Sea Urchin aka Industrial Soldering Robot Time

Started by pickdropper, August 31, 2012, 12:37:11 PM

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pickdropper

I've built the Cave Dweller and really dig it for what it is, but I sometimes want the additional filtering like in the Sea Urchin circuit.  I like that delay in the 1590A, so I did an SMT layout of the Sea Urchin.  These boards were populated by hand, but I may give a reflow oven a go at some point; I just need to get some paste.  If I really decide to do it right, I would get a stencil for that, but I will likely be too cheap for that.

There was a goof on the backside of the board: the regulator pinout was wrong, but a few traces cut, a few jumper wires and I was on my way.  There was also a silk screen error that you'll see in one of the pics, but that wasn't too big of a deal.

Here are a few pics of the populated board:



Here's a couple of microscope shots of the board, just for the hell of it:





Here is the boxed pedal.  Polishing it was a PITA, but I am happy with the results.  It looks nice as long as you NEVER EVER TOUCH IT.  :-)



And here are the gut shots:



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mgwhit

My wife just looked at this (and a few other of your builds) and said to me, "Well, it gives you something to aspire to."  Amazing job.

midwayfair

 :o

This just looks ridiculously professional. I'm always impressed by SMD done by hand.

How much smaller than 1/8W resistors are the SMD resistors?

raulduke


pickdropper

Quote from: midwayfair on August 31, 2012, 01:22:26 PM
:o

This just looks ridiculously professional. I'm always impressed by SMD done by hand.

How much smaller than 1/8W resistors are the SMD resistors?

They are quite a bit smaller, but still manageable.  For this build, I used 0603 resistors and 0805 caps.  I've done 0402 by hand before, but it is a bit more of a pain.  It can also make troubleshooting more difficult because they often don't have values marked (like the caps don't).  0201 is VERY VERY small and I wouldn't bother on a hand-soldered board (even some pick and place machines don't like 0201).
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pickdropper

And thanks for the kind words, everybody.  I appreciate the feedback.
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jimmybjj

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Haberdasher

holy cow that is fantastic!  super neat job too.

i wish there were more smt projects.
Looking for a discontinued madbean board?  Check out my THREAD

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