What does the lightning bolt mean on Raspberry Pi?
The lightning bolt means that the Pi is not receiving the required voltage. This may be due to the power supply you are using or the cable (if seperate). You should switch to a better supply/cable as undervolting can lead to SD card corruption and other difficult to trace issues.
What happens if you use too many volts?
If the voltage is too low, the amperage increases, which may result in the components melting down or causing the appliance to malfunction. If the voltage is too high, this will cause appliances to run ‘too fast and too high’ which will shorten their service life.
What happens if overvoltage?
The overvoltage can cause excessive current to flow as well as creating excessive voltage stresses. In both cases, the electrical insulation system inside the motor or equipment can be degraded reducing life or causing damage.
How to prevent under voltage warnings from printing?
The message Under-voltage detected! (0x00050005) is printed directly to the console, ruining my beautiful text based ASCII art kiosk display. I’ve already added avoid_warnings=1 to boot/config.txt and although that seems to hide the lightning-bolt and thermometer icons from the screen, the text messages still get printed to stdout.
How to avoid warnings from printing to stdout?
I’ve already added avoid_warnings=1 to boot/config.txt and although that seems to hide the lightning-bolt and thermometer icons from the screen, the text messages still get printed to stdout. This is a brand new behavior after upgrading the system: Is there any other setting that will keep the errors quiet?
Why does my Pi have an undervoltage warning?
My Pi occasionally experiences an undervoltage for a second. I am working on fixing it but my main concern is that my Pi is being used in a kiosk application that displays a text output to the terminal screen (no GUI) using curses.
How to prevent poor voltage from damaging equipment?
Dates and times of nuisance events should be noted and the event records kept as part of normal operations. And always consult your local utility for resources to help diagnose power problems, improve efficiency and avoid usage penalties. About the author: Jim Gregorec is the Business Unit Manager for Test & Measurement, IDEAL Industries Inc.