The INA219 based module is a high side current measuring device that also measures voltage at the load and provides a power calculation, which can be retrieved over I2C.

Let's see how it compares to a multimeter measuring load currents from 1mA to a couple of amps.

The circuit diagram in the video shows an ethernet shield instead of an actual Uno but you get the idea.

Sketch and schematic:
https://github.com/GadgetReboot/INA21...

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