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Post by drstang on Feb 15, 2023 7:09:33 GMT -8
Hi-
Grateful for all the help I've got here to get my SkyWeather/SolarMax system up and running.
Was running great; however, the past couple of nights I've noticed the SolarMax shutting down, so I checked voltages from the battery and solar panels, and everything looked good from an input standpoint. But, I noticed the output voltage on the INA3221 IN1- (going to the battery in terminal on the solar control board) is only returning 2.5ish volts. The input on IN 1+ coming from the battery is good at 12.7V, so somehow voltage is being lost across the board. Is this something I can fix, or do I need to get a new board?
Thanks!
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Post by SDL on Feb 16, 2023 9:10:58 GMT -8
Very likely you do not have a common ground in the system. Check your grounds. That is what it sounds like to me.
BP
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Post by drstang on Feb 16, 2023 13:02:54 GMT -8
Thanks. Seems like it was an issue with the USB 5V output. Disconnected that and now am getting normal readings. Not sure why, but will keep working at it. At least its showing correct battery voltage now!
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Post by SDL on Feb 20, 2023 12:40:07 GMT -8
Ah, I didn't understand your situation. Yes, all the readings will be strange with the 5V USB plugged in. The chip gets confused because of the multiple power paths.
BP
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