I've read some related questions, but I was not able to find/understand a proper solution
I'm using 2 AA batteries to power a SAMD21 MCU (arduino mkr series), a DS18B20 probe and a MCP3424 ADC. My problem is that temperature probe and ADC need more than 3V or 2.7V (respectively) to work properly, and I've seen that with voltages lower than 3V, measurements works, but have an important offset.
I'm trying to solve the issue, and my constraining factor is having the longer autonomy I can get, and the simplest circuit with less components. So I'm thinking on using a easy to solder, low footprint and very low power consumption step-up converter that could take the 2xAA batteries an step up to 3.3V for the instruments just during the measurements periods (about 30s every 12min)
Do you have any hint here? Thanks