Linux has an inbuilt LED class that controls led’s and allows you to customize the behavior of them. This information should also be relevant for other SBC’s like the Raspberry Pi.

go to the led’s sys class folder:

cd /sys/class/leds

This directory will contain all the LED that can have configurable behavior. In the case of the Blue LED on the Odroid-C2 its called: “blue:heartbeat”. cd into this device.

cd blue:heartbeat

From here you can set the behavior however you like, run “cat trigger” to get a full list of available modes. The only one I care about however is the completely disable the LED:

echo none > /sys/class/leds/blue:heartbeat/trigger

Boom, LED will be off and stay off, no more annoying blinking!