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Arduino Battery Meter

[A little how-to with some example code from Anonymous Hobbyist][link]. I’m considering adding a solar panel to my Arduino, and I really need to be able to monitor the battery (and the 9v backup).

[link]: https://autonomoushobbyist.wordpress.com/2011/02/24/arduino-battery-meter/ “Arduino Battery Meter | Autonomous Hobbyist”

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