Welcome to Firefly
Switch language
Firefly Docsss
Last Updated: 2026-07-09 15:26:39

LED Usage

There are 2 LEDs on the Core-186JD4 board:

ColorLocationSymbolDescription
YellowUpDIY_LEDUser controls
GreenDownWORK_LEDPower on

Example command to control LED light state (requires root privileges):

# yellow light on
echo 1 >/sys/class/leds/DIY_LED/brightness
# yellow light off
echo 0 >/sys/class/leds/DIY_LED/brightness

# green light on
echo 1 >/sys/class/leds/WORK_LED/brightness
# green light off
echo 0 >/sys/class/leds/WORK_LED/brightness

On this page