I put an arduino on a PCB board and after some power saving techniques like going to sleep, and 3.3v, 8Mhz, etc, I was able to bring down my power draw to 2.5-3.0 mA from 4 AA cells in series. I have an NRF24l01 connected to it and tried to use the NRF power saving techniques, but still drew 2.5mA.…

Trying to turn on pro mini 5v with transistor

system May 14, 2014, 5:52pm 4

Note that I have the power as 5V should 6V

Minimum V_in for V_raw=7V dc