And even with ratiometric sensors, point in case: You have a sensor with a full range response from 10-90% of Vin. The sensor consumes 1.5 milliamps from source.

You can also go the 9v battery route plugged into the on-board regulator of the Arduino but the low mAh rating of a 9v won’t allow your project to stay running for very long.

What do you do if even the smallest Arduino boards (or their clones) are too big for your homebrew project? If you're Johan Kanflo, you find a way to make them even smaller. His AAduino project ...

9V batteries are/used to be popular for Arduino projects, as they can easily be connected via the power jack of the board. But now that most recent Arduino boards are powered by 5V via a USB Type-C ...

Based on the Tiny328, AAduino takes the platform to its sexiest form factor yet: Turning a three-AA battery holder with two batteries in it — the third battery compartment holds the AAduino ...

I been looking over the wiring diagrams and i see that the 5V goes to BQ24195L Which is the battery charger Chip. So that chip can handle 3.9V -17V upline to the Vin all i see is R19 to ground and a ...