Adafruit INA219 Library 
This is a library for the Adafruit INA219 high side DC current sensor boards:
Check out the links above for our tutorials and wiring diagrams. This chip uses I2C to communicate.
To install, use the Arduino Library Manager and search for 'Adafruit INA219' and install the library.
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Written by Ktown for Adafruit Industries. MIT license, all text above must be included in any redistribution