Measure power consumption 🔌

[maxbbraun]

Once nice thing about microcontrollers is their low power consumption. We should measure it! While running inference and while idle/suspended.

I assume it'll consume less power when driven with 3.3V directly instead of 5V USB. I think the PMIC used here should work with a battery. Sheets 3 and 4 of this schematic are probably useful to figure this out.

There are also some relevant notes on power savings in this draft.