Undervoltage indicator

What is the problem? Not sure it is a problem, but at the top of my screen is the non-blinking black icon for undervoltage. Is is only an issue if the icon is red and/or blinking?

What did you already try to solve it? Ask you guys

Logs (octoprint.log, serial.log or output on terminal tab, browser error console ...) NA

Additional information about your setup (OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ...) NA

I've only had this icon showing when there is an under-voltage condition. Otherwise, it is not visible
Fixed my issue with a better 5V power supply.

Hi @petey!

Just look here: Pi Undervoltage/power issues: I had a strange lightning bolt/temperature symbol with an exclamation mark popup in my navbar, what does that mean?

That's my point; the popup says the undervoltage is shown in red. Mine is black and not blinking. Do I have a problem?

That means, that the undervoltage occurred before. It disappears when you restart the Pi and the undervoltage issue does not happen again. If it occurres more often, you should check your power supply and cables.

I had the same problem when I first setup my Pi. It was black which as noted indicates a previous event, In my case, I ended up replacing the lead from my power supply to the micro usb connector with a better quality piece of wire. The original was from a cheap usb charger and the one I bought was a much thicker gage wire.
Problem solved as I haven't see the icon since.

Country Bubba


I had the dreaded undervoltage indicator appear recently on my pi. I suspected my hand built power cable (I needed bare leads to use my DIN mounted PSU), well, since I built it myself. I purchased a 22awg cable, and the problem did not go away. I replaced my PSU and the issue vanished. I'm still not sure why my 40W psu isn't working anymore. I need to put a meter to it and figure it out.

The moral of the story: Even if your PSU and cable have worked in the past, that isn't a reason to rule either of them out as the problem.

Do you have themify enabled? For some reason the 'warning' indicators are gray in some of the themes. I added CSS to my plugin to counteract this, since the warning icons are pretty important to me :slight_smile: