I've been reading a bit about powering projects with AA batteries. I plan to do a wireless temperature sensor thingy.
I'm trying to decide how to power the project as all the components have different voltage specs. Pro Mini, NRF24L01 and DS18B20.
I was thinking of running iit off 3AA batteries but that goes over the allowed voltage for the radio so thought I could take two lines from the battery pack, one from 2 batteries for the radio and Arduino and one using 3 for the temp sensor.
Does this sound like a good idea?