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easybotics / node-red-contrib-easybotics-ina219

node-red wrapper of the ina219 npm module!
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Wrong voltage calculation #9

Open Luc3as opened 4 years ago

Luc3as commented 4 years ago

Hi, I need your help, I have very basic setup, wiring is correct, I found old closed issue about common ground. I have power supply around 24 volts, 3 A, my module should be capable of measuring up to 3.2 A by the datasheet. but somehow if the voltage is bigger than cca 9 volts, I start to receive negative values. image I tried the very basic python sketch and this looks great so there has to be someting in the js library, but I could't find any problem. image

I also noticed there is no change in voltage measuring if I change resistor value, in settings. Don't you have any clue what could be wrong ? thanks

keptan commented 4 years ago

Thanks for your well documented issue, I'll check this out.

TechMindsYT commented 1 year ago

Was this issue ever fixed? With 18v in I see negative 15 on the node output. :-)