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

Taylor Alexander tlalexander at gmail.com
Wed Jan 19 20:29:07 UTC 2011

Yeah, makes sense. But still, they at least need a coin cell battery -
if the PCB is smaller than a coin cell, there'd be room, right? Though
I didn't look at component values for that chip to see if it could be
made small... I just have a hard time imagining a circuit that is much
simpler, but still works.

But it is a worthy quest!


On Wed, Jan 19, 2011 at 12:25 PM, Dr. Jesus <j at hug.gs> wrote:
> On Wed, Jan 19, 2011 at 12:02 PM, Taylor Alexander
> <tlalexander at gmail.com> wrote:
>> 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.
> Yes, there's a rework station and I've seen several hot air tools
> floating around.
> I'm not saying it's a bad idea, but many of the applications I'm
> talking about are incompatible with PCBs because they're intended to
> be worn.  I can easily group the amateur battery-powered designs at
> Noisebridge into two categories: janky blinky things and duct-taped
> junk in motion.  The target audience for the poster is the former.
> They're optimizing for size, cost, ease of assembly, and often
> wearability.  The latter group usually has other unusual requirements
> that aren't going to be answered by a poster.  In either case,
> anything more complex than a single small IC with a few pins is
> usually not a good fit for their application.

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