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Topic: mobile MAX7219 powering (Read 754 times) previous topic - next topic


Oct 13, 2011, 08:04 am Last Edit: Oct 13, 2011, 09:44 am by Freakazoid Reason: 1

i want to drive a little LEDmatrix with the MAX7219. Since it's a mobile project I need to power it and the standalone arduino (http://www.arduino.cc/playground/Learning/AtmegaStandalone) with batteries. Since the voltage of the batteries drops over time I need to use a voltage regulator (or maybe you have a solution without one :)). I want to get the maximum lifetime out of the batteries. Which regulator would you recommend? The LT1302 and the MAX 756 look pretty good from my noobieview here :). Any other possible solutions?

I'm going to use 6x4 white LEDs. They suck 20mA.
Space for batteries is not (very) limited.


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