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Questions tagged [board-leds]

For questions pertaining to the onboard LEDs of the Raspberry Pi (PWR, ACT and ETH)

1
vote
1answer
44 views

Turn off onboard LEDs at boot

I know very little about Raspberry Pi and Python. I've been able to turn off the LEDs in the terminal using the following command: sudo su - echo none > /sys/class/leds/led0/trigger However, I ...
11
votes
3answers
2k views

How to identify a Pi

I have a stack of five Pis, each of which have a separate hostname and are on the same network. I need to physically identify each Pi from another Pi, perhaps by flashing the onboard LEDs in a ...
0
votes
1answer
90 views

Problem with LED blink program on Pi

I am completely new to RPi and stuck unexpectedly. I am trying to create a simple python program to make my LED blink. Here are the two programs which are giving same outputs on terminal when I ...
4
votes
1answer
8k views

Turning off LEDs on Raspberry Pi 3

I need to disable all LEDs on my Raspberry Pi 3s otherwise they interfere with the operation of my camera setup. I use Raspbian Jessie. I can successfully use the following code: echo 0 >/sys/...
2
votes
2answers
129 views

Do the Ethernet lights show error codes?

My moel B is flashing all three network lights (FDX, LNK and 100) toghether about once per second. Is this an error message? There is a cable plugged in but there appears to be a break somewhere ...
1
vote
2answers
848 views

raspberry v3.0, model B read red led status

How can I read the status of the on board red led in raspberry 3.0 model B? Thank you
2
votes
1answer
778 views

Pi 3 on-board LEDs

Can I make one of the LEDs on the Ethernet port do the same thing as the ACT led? The case I've got my Pi in, does not allow me to see the ACT led so I do not know when its okay to cut the power ...
4
votes
3answers
120 views

Raspberry pi leds does not blink and the ic gets hot

I bought my raspberry pi 3 model B 4 months back. It was working perfectly but one day, when I was working on pi, all of a sudden, it stopped working. After that day, when I am trying to power it up ...
1
vote
1answer
36 views

Can someone explain what the values are and where they are found?

I'm trying to follow along with this OS building tutorial. I'm trying to understand what the LED_ values in rpi-gpio.h mean and how they are all used. Where in the documentation are these values ...
1
vote
1answer
479 views

Green Led (ACT) is blinking for mmc0 without SD card activity

The green led (ACT) on my Raspberry Pi 3 is set to mmc0 to flash on SD card activity via echo mmc0 |sudo tee /sys/class/leds/led0/trigger However, it flashes much more often (randomly every few ...
0
votes
1answer
548 views

Replace ACT- and PWR-Led on Raspberry Pi 3

I somehow broke off the ACT- and the PWR-Leds from my Raspberry Pi 3. It's still working fine, but i want to solder some new ones on. What kind of Led do i need?
0
votes
1answer
119 views

PiGlow script in Python doesn't work

I just bought a PiGlow and a Pibrella, and I was curious how it worked. I imported a few Python scripts from this link, but none of the scripts does work. When I run one of the scripts, I get the ...
4
votes
1answer
2k views

How to read the status of the Power-LED on Raspberry Pi 3 with Python

How to read the status of the Power-LED (or the rainbow square - if you like that better) on Raspberry Pi 3 to detect an low-voltage-condition in a python script? Since the wiring of the Power-LED has ...
0
votes
3answers
157 views

Bad Raspberry boards?

I'm the owner of 5 Raspberry boards. Four of them work flawless. The fifth board regularly refuses to respond to pings or SSH. Sometimes it comes up after a few minutes waiting. It has no firewall ...
1
vote
0answers
73 views

Red light only when plugging Pi2 into AV-Receiver via HDMI, TV works

When I try to plug my Pi2 into my A/V receiver via HDMI and plug in my power cable afterwards, the red light lights up, afterwards the green light lights once and then nothing. When I plug in the ...
0
votes
1answer
340 views

Blinking PWR when not enough current available?

I'm not sure whether I've seen mention of this here before or not. Anyway, I have a B+ with max_usb_current=1 enabled so I can run an external USB drive off it. There's never been a problem with ...
6
votes
4answers
6k views

How can I control the red LED again

I just acquired the latest Pi-3. In the Pi B+ and Pi 2 it was possible to access both the red and green LED through /sys/class/leds/led0 and /sys/class/leds/led1. After setting up the Pi 3, I have ...