Low power arduino
I've bought recently a new Arduino Pro Mini. I was mostly interested on what the minimum power consumption might be when powering it at 3.3 volts. The average current was 5 mA with pin 13 led off. But what it is most interesting is that sleep mode current goes down to 400 microamps (and this is still keeping the red led on). As the red led resistor is 10k I guess the sleep current will go to almost nothing once I remove the red led resistor. That is a very interesting value if you're worried about power consumption for sensor network applications. A CR2032 will last for more than 500 hours at 0.4 mA!