Andy got a reaction from guidol in NanoPi Neo Core & Core2 & MiniShield
thx foor the help.
now I can see the problem.
this command works echo "heartbeat" > /sys/class/leds/nanopi\:green\:pwr/trigger
however the RED power LED is now flashing on my NanoPi Neo Core 2.
When I use the echo "heartbeat" > /sys/class/leds/nanopi:blue:status/trigger nothing happens.
I think the Core 2 has some different LEDs at different Ports...