Convert 3.7v to 5v DC

retrolefty:

Ben1234:
ok. I will stick with something like what sparkfun sells.

Much better prices on boost switching voltage regulators on E-bay from Asian sellers. I've bought several types and have never had a problem with them. Here is just one example:

http://www.ebay.com/itm/DC-DC-3V-to-5V-1A-Voltage-Step-up-Power-Regulator-Transformer-Module-500KHz-NEW-/251080856072?pt=LH_DefaultDomain_0&hash=item3a7595d208

Lefty

Have you tested the step-up regulator with much of a load? I ask because I would like to run about 140ma of blinking LEDs of a minimal Arduino using a 3.7 lipo battery. It would be awesome if the regulator could truly supply 1A at 5V.