DIY Battery Monitor - ESP32 based

[Techstyle]

I get this fluctuating 0.9 volts even when the shunt is unhooked so something is really weird here. I enabled the shunt variables but they don't make much sense either way. The circuit I use is a crowtail INA219B, I don't know if it handles the variables differently but will start to look into it.

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It turns out I'm an idiot. I've been running this from usb to be able to monitor it, and how could it sense voltage if it doesn't have a common ground? In the meantime I think I managed to burn my IDA219 but I think we are getting somewhere.

sorry, I should have thought of that, it happened to me as well - I think I mention it in one of the videos, but not sure