Hi I would like to make some wearable things with the
12mm Diffused Digital RGB LED Pixels (Strand of 25)
and I have some power questions. You recommend the 5v 2A power supply. So I
would assume
sparkfun's
Polymer Lithium Ion Battery - 2200mAh 7.4v
sku: PRT-10471
would be what I need because 3.7 v will not cut it?
What is the range of voltage the leds take & (and chip)?
I assume because of the chip it has to be a 5v
no more or less. I have looked for a voltage regulator to drop it down to 5
but they dont handel 2A.
Could i also just use a 9v battery with a 2.5 ohm resistor? 5v * 2A = 2.5ohm ? But how long would the battery last?
Or it this the wrong approach and I should find the right voltage regulator?
Thoughts?
Thanks
bitwiseb
wearable power for 12mm Diffused Digital RGB LED Pixels (Strand of 25)
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Re: wearable power for 12mm Diffused Digital RGB LED Pixels (Strand of 25)
those batteries will kill the LEDs, the voltage cannot be higher than 5V or so.
you can use any of our 3.7/4.2v lithium batteries - they're a little dimmer
see also our LED belt project kit and tutorial for how to use AA's
you can use any of our 3.7/4.2v lithium batteries - they're a little dimmer
see also our LED belt project kit and tutorial for how to use AA's
Please be positive and constructive with your questions and comments.