I think a better solution is a step-up. We use the ADP1613 and works fine, it evean resists a short-circuit with a screw driver bestween it's output and GND. So you can use about 3 AA/AAA batteries and get enough power for the Arduino.
I think a better solution is a step-up. We use the ADP1613 and works fine, it evean resists a short-circuit with a screw driver bestween it's output and GND. So you can use about 3 AA/AAA batteries and get enough power for the Arduino.