I am using a voltage divider to monitor a 12 volt battery charge state. The battery is part of a solar panel system for my home. I want to turn on a 110vac battery charger when the battery voltage falls to 11.0 volts. The r1 value is 3.26K and r2 is 1K. The values I get on the analogRead is ~570 whe…

12 volt Battery Condition Monitor

jremington April 17, 2018, 3:25pm 2

Google "arduino voltage divider" for several tutorials and forum posts.

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