then it would be 4xAAA/AA (3xAA will only work if fully charged)
the other idea would be :
0.7-4.5 --- VREG 5V --->|----+ | +--- VREG 3.3V | USB 5V ---------------->|----+
or another nice idea (like the arduino does for the 5v) :
BATT --- VREG 3.3V ---+ | FDN304 -- 3.3V | VUSB --- VREG 3.3V ---+
as you wish, Kevin
On 09.05.2011 21:18, Philipp Fabian Benedikt Maier wrote:
Hi!
Or maybe you could do this:
3xMigon ----->|------+ +--------+ | | | +----------+ 3,3V +-------- | | Reg. | USB 5V ----->|------+ +---+----+ | _|_
Simple, but effective ;-) And you need only one regulator.
regards. Philipp