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Tips und Tricks zum Raspberry Pi

<time datetime='2019-08-02 00:00:00 +0000 UTC'>August 2, 2019</time>&nbsp;·&nbsp;1 min&nbsp;·&nbsp;Michael Bäcker (aka BakermanLP)

RaspberryPi tips

Tips und Tricks zum Raspberry Pi

Visuelle Erkennung des PIs im Cluster

Quelle: https://blog.codybunch.com/2020/10/12/Visually-Identify-Raspberry-Pi-In-A-Cluster/

Test for LED Trigger

$ cat /sys/class/leds/led0/trigger
 none rc-feedback kbd-scrolllock kbd-numlock kbd-capslock
 kbd-kanalock kbd-shiftlock  kbd-altgrlock kbd-ctrllock
 kbd-altlock kbd-shiftllock kbd-shiftrlock kbd-ctrlllock
 kbd-ctrlrlock timer oneshot heartbeat backlight gpio cpu
 cpu0 cpu1 cpu2 cpu3 default-on input panic actpwr [mmc0]
 rfkill-any rfkill-none

Enable the ledtrig_heatbeat

$ sudo su -
# modprobe ledtrig_heartbeat

Set LED0 to blinking

# echo "heartbeat" > /sys/class/leds/led0/trigger
# cat /sys/class/leds/led0/trigger
none rc-feedback kbd-scrolllock kbd-numlock kbd-capslock
kbd-kanalock kbd-shiftlock  kbd-altgrlock kbd-ctrllock
kbd-altlock kbd-shiftllock kbd-shiftrlock kbd-ctrlllock
kbd-ctrlrlock timer oneshot [heartbeat] backlight gpio cpu
cpu0 cpu1 cpu2 cpu3 default-on input panic actpwr mmc0
rfkill-any rfkill-none

Reset back to SD Card Access

# echo "mmc0" > /sys/class/leds/led0/trigger
# cat /sys/class/leds/led0/trigger
none rc-feedback kbd-scrolllock kbd-numlock kbd-capslock
kbd-kanalock kbd-shiftlock  kbd-altgrlock kbd-ctrllock
kbd-altlock kbd-shiftllock kbd-shiftrlock kbd-ctrlllock
kbd-ctrlrlock timer oneshot heartbeat backlight gpio cpu
cpu0 cpu1 cpu2 cpu3 default-on input panic actpwr [mmc0]
rfkill-any rfkill-none