I am constructing a solar powered photon (or electron) project and trying to minimise battery use during theperiods when the device is in sleep mode. I estimate that all the sensors and outputs I have will draw around 20 to 30 mA even when not in use.
- does the 3V3 output go to zero when the device is in sleep mode? Are the different sleep modes different in their behaviour? Some of the devices could be on this line.
- any suggested circuits that can be controlled by the processor to isolate the power to the peripherals. Most of them can be run off the LiPo battery directly. There are optorelays, for example here is one based on ‘photoMOsS’ technology that will switch 500 mA for a penalty of 5 mA on the input side : https://www.jaycar.com.au/medias/sys_master/images/hef/he3/8838499368990/SY4090-dataSheetMain.pdf
does this sound feasible?