[Noisebridge-discuss] driving multiple LEDs with minimal batteries

[jim]

   an LED, depending on its color and brightness 
and a few other things, requires something like 
1.5 to 2 Volts and consumes from 5 to 20 milliamps. 
probably one or two of the coin size batteries will 
be sufficient for a few LEDs. 


On Tue, 2011-01-04 at 12:06 -0800, meredith scheff wrote:
> I'd like to do a soft circuit scarf or three, but I'm always running
> up against the problem of power. I usually use fairly low power LEDs 
> (<2v) driven by a 9v battery or one of sparkfun's LiPos. 
> I've heard tell of somehow being able to power more, but I'm still
> learning this EE stuff. Could some kind person point me in the right
> direction?
> Meredith
> 
> -- 
> 
> 
> Ladycartoonist.com
> 
> ___________
> 
> A human being should be able to change a diaper, plan an invasion,
> butcher a hog, conn a ship, design a building, write a sonnet, balance
> accounts, build a wall, set a bone, comfort the dying, take orders,
> give orders, cooperate, act alone, solve equations, analyze a new
> problem, pitch manure, program a computer, cook a tasty meal, fight
> efficiently, die gallantly. Specialization is for insects.
> 
> -Robert A. Heinlein
> 
> 
> 
> _______________________________________________
> Noisebridge-discuss mailing list
> Noisebridge-discuss at lists.noisebridge.net
> https://www.noisebridge.net/mailman/listinfo/noisebridge-discuss