[Noisebridge-discuss] A simpler circuit for ... [driving multiple LEDs with minimal batteries]

Taylor Alexander tlalexander at gmail.com
Wed Jan 19 20:02:46 UTC 2011

Yeah. Well if you come up with that, let me know. ;)

I can see 9 parts being a pain if you're wiring it by hand, but on a
PCB, its nothing. So if I stop being lazy, maybe I'll lay something
out. Or maybe something better will come up!

Does noisebridge have a hot air gun for soldering? That would go a
long way towards people being less afraid of this kind of stuff.


On Wed, Jan 19, 2011 at 11:46 AM, Dr. Jesus <j at hug.gs> wrote:
> On Wed, Jan 19, 2011 at 11:34 AM, Taylor Alexander
> <tlalexander at gmail.com> wrote:
>> Hey, I did a quick search and found a nice 1.1v->14v step up chip from
>> National Semiconductor.
>> http://www.national.com/pf/LM/LM2623.html#Overview
>> Its in a 5 pin SOT-23 package, so it *could* be wired without a PCB if
>> you're careful (though I don't know if performance would suffer), so
>> maybe the non-techies could follow a schematic for that and wire their
>> own? Or maybe someone could make a PCB for it that the non-technical
>> people could use?
> It is a nice little part.  I think it's possible to improve on the 9
> part BOM, though.  That's more parts than the entire rest of the
> design for some of the projects I've seen :)

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