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Thery're heeeeeeere!

The PC Boards have arrived!

Digit Driver PC Boards

Also, for those wondering, the digit tugrik and I have been making does a decent job of being visible in daylight.
Big LED Digit


( 6 comments — Leave a comment )
May. 20th, 2004 12:41 pm (UTC)
Nice how you worked the 'burning man' into it too.
May. 20th, 2004 01:09 pm (UTC)
The trace layouts and design are all tugrik's artistry.
May. 20th, 2004 01:13 pm (UTC)
So, you guys are spending a lot of time on the clock(s), how far are you along on the mechanical design/fabrication for the the device which will mount the laser and traverse it to point at what you want it to point at?
May. 20th, 2004 02:02 pm (UTC)
We've found a suitable rotation table that will let up point it in the direction we want. We've not figured out the elevation control yet, though. We're also still researching lasers to use with it. If all else fails, we can always just manually repoint the thing between flares.
May. 20th, 2004 02:18 pm (UTC)
I dug the scroll saw out of its cobweb-covered prison, put a new blade in it and diced the boards properly... though I admit my lines could have been a little straighter.

One board is all soldered together, save for the transistors; I want to wait until you're home and can breadboard confirm their proper orientation. I used silver solder and it's beading just right, keeping away from the finer lines on the board. I also metered out all the vias and confirmed the board was made the right way.

I do like how well the cat5 jacks fit. They're going to be plenty mechanically stable enough, which was one of my worries. Now we just need to make standoffs.
May. 20th, 2004 04:28 pm (UTC)
Electronic goodness.
Still having project envy over here };>.

Discovery for the day: TSSOP packaging is indeed a massive pain to solder by hand, but it can be done (with relatively little pain once you get the hang of it, even).

SOIC is just fine, if you ever plan to do surface mount }:>.

Of course, Tugrik's reflow station kind of simplifies things =^.^=.

( 6 comments — Leave a comment )

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  • 17 Oct 2011, 19:18
    Clever! ^_^
  • 7 Oct 2011, 08:38
    Was each link made from two pieces, or was there fill material inside that you removed? I'm having trouble seeing how to print these in a makerbot-compatible way (though I could just be overlooking…
  • 5 Oct 2011, 22:40
    Nah. It'd just take a dissolvable support material and higher resolution. There are commercial 3d printers out there that can print ball bearing assemblies in one pass, fully assembled.
  • 5 Oct 2011, 18:46
    Nice! ^_^ I was going to be flabbergasted if you were actually able to print it as a unit, but I guess that would take antigravity.
  • 5 Oct 2011, 18:19
    I printed each piece individually and assembled them after some cleanup. I did print four segments at a time, though, unattached, in a 2x2 grid.
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