Arduino enthusiasts and makers searching for a new project to keep them busy this weekend may be interested in a new DIY Arduino Nano multimeter created by YouTuber Electronoobs. Using a small ...

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It only applies to certain microcontrollers, but he provides example Arduino code showing how handy this can be for battery-powered projects.

Using an Arduino Nano board together with a 2.2 inch UART HMI display the batteries can provide up to 60w of power output.

His AAduino project turns the already miniscule Tiny328 Arduino clone into an even smaller computing device that's about as big as an AA battery.