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troubleshooting [2018/08/22 12:01]
90.155.91.76 Add Raspberry Pi power supply under-voltage warning
troubleshooting [2018/08/22 18:26] (current)
90.155.91.76 Tweak the wording of my RPi under-voltage suggestion
Line 410: Line 410:
 * Route wires for motors and mosfets away from signal cables ( endstop, thermistors,​ USB, etc ) * Route wires for motors and mosfets away from signal cables ( endstop, thermistors,​ USB, etc )
 * Try rebooting the host computer ( especially if the host is a Raspberry Pi ) * Try rebooting the host computer ( especially if the host is a Raspberry Pi )
-* If printing from a Raspberry Pi ( e.g. from OctoPrint / OctoPi ), ensure that the Pi's power supply is capable of supplying the required current at a high enough voltage. The official Raspberry Pi PSU supplies up to 2.5A at 5.1V. Low voltages can cause USB communication issues, as well as SD card corruption and other crashes. ​Watch for a "​lightning bolt" icon displayed over HDMI or run ''​dmesg | grep voltage''​ in a terminal/​over SSH to see if you're getting under-voltage issues.+* If printing from a Raspberry Pi ( e.g. from OctoPrint / OctoPi ), ensure that the Pi's power supply is capable of supplying the required current at a high enough voltage. The official Raspberry Pi PSU supplies up to 2.5A at 5.1V. Low voltages can cause USB communication issues, as well as SD card corruption and other crashes. ​With a Pi 3 B or 3 B+ you can monitor under-voltage events by watching ​for the Pi's red power LED turning off, a "​lightning bolt" icon being displayed over HDMIor you can run ''​dmesg | grep voltage''​ in a terminal/​over SSH.
  
 See the [[http://​smoothieware.org/​usb|USB]] page See the [[http://​smoothieware.org/​usb|USB]] page