It's an ESP-01 Wifi chip and a DHT22 temperature/humidity sensor. Now I'd like to power it with batteries instead of an Arduino. The ESP-01 requires 215 mA, the DHT22 requires max 1.5 mA.
This post shows powering such a set-up with a 3.7v battery regulated with a HT7333 voltage regulator.
However, as AA batteries are more available in my neighbourhood, I thought maybe I should use a "step-up"/boost chip to boost 2 AAs to 3.3 volts.
Is this a good idea? And which particular chip would be easyish to use on a breadboard and hopefully eventually solder?