Hey all,
I am currently working to get my Moteino to work at ultra-low powers. I will be powering my board using a energy harvesting module and as a result the board power consumption, particularly in sleep mode, is really important to me.
At the moment the lowest current consumption I can achieve is ~6mA in active mode, and ~55uA in sleep mode. I think I can simplify my code and optimise the MCU settings to reduce the active mode, but if I cannot get the sleep mode any lower it will be a real problem.
So what I would like to know is, what is the lowest consumption you guys have achieved? Is it worth persevering with Moteino or should I look for a lower power solution? Has anyone got <10uA or even <5uA, and what were the key solutions? I'm using the LowPower.powerDown command at the moment, turning off ADC and BOD, and I've set the PRR to an optimum level. The radio and the flash are in sleep mode (I'm considering removing the flash altogether though I think this will only save a tiny amount of power), all unused pins are held LOW... I think that's it.
Anything I haven't mentioned that you think would be useful would be really helpful. Thanks in advance!