I'd like to use a single 5mm UV LED
(3.4Vf, 20-25mA) to charge a daub of glow-in-the-dark paint. It only needs to be lit around 1 minute of every 10 (or 6 seconds of every 60), and only when the (room) lights are out. What battery/circuit would be most economical to operate, and require the least-frequent battery changes?
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posted by jjjjjjjijjjjjjj
on Jan 18, 2011 -
6 answers
I have a medium-sized run of printed circuit boards that'd be most cost-effective for me to silkscreen/photo-etch at home. I'm pretty sure I got that part covered... lots of tutorials available
[1, 2, 3, etc].
It'd be a shame, though, to build this setup and then not use it again, so I'm wondering
where are some great repositories for (all types of)
PCB layouts? Added difficulty: Would like reasonable descriptions of "what they do" and how the boards are likely to be employed.
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posted by jjjjjjjijjjjjjj
on Dec 30, 2008 -
7 answers
Electronics/LED Folks: I bought a few cheap, poorly-assembled LED
color-changing orb-things and I'm pretty sure they're the coolest objects I have ever owned. I
cracked 'em open, and damned if I know what is going on in there, but it looks simple/cheap as all hell. Help me figure it out, I'll post a build-log/parts list somewhere, and in short-order
we can all be ass-deep in home-made, disarmingly sublime mood-lighting.
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posted by jjjjjjjijjjjjjj
on Nov 18, 2008 -
28 answers
