Solar car battery charger and power supply with MCU interface

[njbuch]

@Brett

@njbuch

Would it make sense to use this, and put a voltage divider circuit on the battery poles and feed it into an analog input pin on the MCU? I need to be able to monitor the power left on the battery…

Or might I be able to find a “protected voltage divider” module, I am not completely happy about putting that circuit together, would like something tested…

I have a voltage divider on an analog in pin on one of mine. But I haven’t used it in any level of real monitoring. You could do the same on the solar panel output line as well to get an idea of solar production.

What sizes are you using?