[Vanhackspace] Vanhackspace Digest, Vol 21, Issue 6

[Sandra K]

Hi all! Newbie lurker here.

> 2) "Produce the light at the object"
> Here the problem is that of size and weight - the circuitry has to be small (a 556 SMD with Rs and Cs is about 1cc in volume) and the battery has to be small enough to not be visible but powerful enough to last 'long enough'.
>
> I'd favour the LM3909 (lovely chip, very low component count, but hard to find) for long battery life and/or a surface mount 555 (or 556 at a push) for funkier effects - the triggers of the CMOS version would be sensitive enough for a tiny microphone to act as a trigger - scope for interaction there.
>
> Drive with two coin cells, job done.
>
> -JamesG

Just wanted to mention it'd be awesome to have a workshop on LED
jewelry. I have construction and design skills, but incorporating
light in a non-bulky, interesting way is the challenge.

Also, light boxes were mentioned and I thought of the therapeutic kind
as well as photography boxes. A workshop to learn to make them low
cost could be popular in Vancouver, where a lot of people have
seasonal affective disorder and would like to try light therapy but
can't afford $200 lamps. Is anyone with the skills interested in
teaching that?

http://www.day-lights.com/canadaindex.html

Cheers,
Sandra