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Well, don't you have to do that anyway, even if using a Pro Mini? OK, you could solder some wires to the Pro Mini, but what's at the other end of the wires?
mrbwa1 wrote: The biggest drawback I see is that once you have a working setup, you will then either need to design a custom PCB or solder everything to perfboard.
Excellent news! I plan to use low self-discharge NiMh cells, but even they won't last anything like that long. Makes going for 1MHz seem a little uneccesary! I was considering 2xAAA vs 2xAA though.
wergeld wrote: In the mySensors sleep mode (power down) i draw 50 microAmps. And during reading of sensor/transmission it jumps to 15 mA - but only for about 100 ms. Calculated that I could get about 4 years of battery life - in a perfect world of course.
mrbwa1 wrote: If the calibration data is available, then you should be good to go.