All Questions
15 questions with no upvoted or accepted answers
2
votes
2
answers
465
views
Issue running LED matrix with Fadecandy controllers in Processing
I have built an LED matrix using 2048 ws2812b leds. It is being controlled with 4 fadecandies and a processing sketch. I have it running fine on my laptop, but when I try to run the same sketch on ...
- 21
1
vote
0
answers
653
views
GPIO in /sys/class/leds/
I am doing a project with Raspberry Pi and OpenWrt. I need to attach indicator LEDs. Basically, I need to modify the DTS for bcm2710 and add additional GPIOs in the led section such that it gets ...
- 11
1
vote
0
answers
192
views
Raspberry Pi 3 B+ LED Light Blink not working
I am trying to get my LED to blink once, but it is not working. I connected the brown wire to pin 6 (Ground), and the red to pin 7 (GPIO 4). I watched a tutorial on connecting the circuit but it is ...
- 111
1
vote
0
answers
328
views
Cannot lighten up 12V LED strip with Raspberry pi 3
Bought a
12V 5M RGB LED Strip
a 12V 5A power supply
6 IRLZ44N mosfets.
i am trying to light up the led strip with PiGPIO.
followed the https://dordnung.de/raspberrypi-ledstrip/ tutorial. and the led ...
- 11
1
vote
0
answers
771
views
Red camera LED fails to turn off
I am using Raspbian 4.9.35-v7+ (3B+) and the camera: https://www.adafruit.com/product/1567.
This may be flagged as a duplicate to previous questions under similar titles; however, none of their ...
- 111
1
vote
0
answers
200
views
WiringPi can only turn on 8 LEDs
On my RPi 3 I have a PHP website to control 10 LEDs. Each is wired to a separate GPIO pin and 220 ohm resistor.
Here is the code:
<html>
<head>
<title>LED Control</title>...
- 121
1
vote
0
answers
25
views
Lighting Issue On Snapshots
I'm creating a proof of concept project for my Pi 3. The concept is to take a photo using a USB webcam when a button is pressed. That part was simple using OpenCV. However, the lighting is fairly ...
- 11
1
vote
0
answers
2k
views
How can I get my raspberry pi 3 to work with SK6812 LEDs without a screen?
I have a raspberry pi 3 and am trying to get it to run the SK6812 LEDs with no screen. When I have my ASUS monitor connected, the LEDs work fine, and when I disconnect the screen and reboot, the LEDs ...
- 11
1
vote
0
answers
2k
views
Green LED never lights up
When I power up my Raspberry Pi 3, the red LED lights up and stays red until I unplug it. The green LED always stays off no matter what:
- I tried 3 different 2A chargers
- I tried 2 different SD ...
- 111
0
votes
0
answers
54
views
WS2812B addressable led does not turn on after a certain point
I control thousands of leds using WS2812B led with Raspberry Pi 3. But since I have two different led types (both ws2212b), I use two different pins. Logically, I connected a 5V 10A power supply to ...
0
votes
0
answers
291
views
I cannot make 7Segment 4Digit TM1637 to work
I bought 7Segment 4 Digit TM1637
And i wan to make it work with Raspberry Pi 3B
However, it doesn't work
I think i wired everything correctly,
and i used this python lib
https://pypi.org/project/...
- 101
0
votes
0
answers
448
views
AttributeError: 'NoneType' object has no attribute 'send' for my LED on off code through blynk
I am trying to run a cod for LED on and off through blynk app
but every thime it is showing this error:
AttributeError: 'NoneType' object has no attribute 'send'
my code is
import RPi.GPIO as GPIO
...
0
votes
0
answers
45
views
Flashing of LED
This is my first post here so HELLO and sorry if I'm posting in the wrong place.
I had assigned a time limit of 40s for led blinking. Can I pause the blinking of this led and make another led to blink ...
0
votes
0
answers
2k
views
All the ports are not working of my Raspberry Pi 3 (4 USB port and ethernet port)
According to my knowledge, in my circuit only power light of Raspberry Pi is working but all other component such as USB port and Ethernet port is not working. Please help me......
I have just bought ...
- 1
0
votes
0
answers
2k
views
Failing to turn on a LED with GPIO Pins (Raspberry Pi 3 B V1.2)
I'm trying to play around with my RaspberryPi a bit and I'm failing miserably... ANY help ist highly appreciated!
I'm on a brand new installation of Raspbian, after "apt-get update && apt-get ...
- 1