Sometimes when I open VNC viewer on my RPI I get low voltage report. I have measured supply voltage several times, but always measure bit more then 5 volts. I don't know what to think. My question is: Is there a way to read the supply voltage, so I can put it in a trend chart?

Have a look at node-red-contrib-vcgencmd (node) - Node-RED That's a very easy to use solution to monitor for low voltage throttling, plus lots of other useful information. Another tip is don't use a USB power cable longer than what you need! The longer the lead - the greater the voltage drop. If …

henkkas 28 November 2021 12:51 4

@jbudd @Paul-Reed , thanks very much for your advise guys, I will make use of this node. I think it might be helpfull in monitoring what;s going on.

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RPI sometimes reporting low supply voltage

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