johnraikonen
Posts: 1
Joined: Fri Mar 11, 2016 10:12 am

[RPi3] Power led control

Sat Mar 12, 2016 2:16 pm

Hi everyone.
I am trying to shut down the power led on the RPi 3 with Jessie. It seems impossible with the old way :

Code: Select all

echo 0 > /sys/class/led1/brightness
Indeed, it works with the green led (leds/led0) but the folder led1 doesn't exist anymore.

Did someone found an other way ?

SebTC
Posts: 9
Joined: Sun Mar 13, 2016 12:01 am

Re: [RPi3] Power led control

Sun Mar 13, 2016 9:46 am

I'm also interested in this. Is the PWR led (led1) hardwired or is there an update/solution to turn it off? Guess it can save around 5mA.

smurf
Posts: 3
Joined: Thu Jun 14, 2012 10:59 pm

Re: [RPi3] Power led control

Tue Mar 06, 2018 5:04 pm

Current kernels give you led0 and led1 to play with.
You can "echo none >trigger" and write 0/1 to "brightness", or you can set it to mirror any available GPIO, or …
Have fun.
Note that the green LED has a minimum on time of 0.1 seconds or so; this is so that you can see even very short bursts of activity when it triggers on the MMC controller or the network adapter. The red LED is wired directly.

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