Raspberry Pi Stack Exchange
Raspberry Pi Stack Exchange

Questions tagged [ws2812]

26 questions
3
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1 answer

Need Help with Controlling Some LEDs with a Raspberry Pi

I'm mainly trying to follow this guide here in order to connect some LEDs to a Raspberry Pi. I've read other guides as well, but this link is where I got the majority of my setup done. I've never used a Pi, have never worked with LEDs, and have…
user2323030
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1 answer

Control two RGB LED Strips from Raspberry pi

I've connected two rgb strips(WS2812B) to raspberry pi. Each strip consists of 60 LEDs. The first strip data line is connected to GPIO pin number 18 & Second strip data line is connected to GPIO pin number 12. I'm using strandtest.py to control my…
Bharath Pabba
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2 answers

Pico W common reference ground with 5V power supply safe?

I have a question regarding a new project I’m currently working on. It involves a Raspberry Pico W, an external 5V 12A power supply and a WS2812B LED strip. Now, I already got it working flawlessly using an Arduino Uno R3 and now want to port it to…
Seatropicalnet
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1 answer

RAM Usage of Neopixels: How many can I power with a Raspberry Pi

I am building LED Matrix's with Adafruit Neopixels, and I read somewhere that the amount of pixels you can control is limited to how much RAM you have on your controlling device, in this case, a "Raspberry Pi 1 Model B+". I know this is an older…
Aaron Mann
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0 answers

Raspberry Pi 3B+ with LEDs WS2812B and speaker

I just started making my first project with Raspberry Pi 3 Model B+ and I found an amazing tutorial ("https://tutorials-raspberrypi.com/connect-control-raspberry-pi-ws2812-rgb-led-strips/"). I am curious if there is any way to control RGB LEDs…
Art
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2 answers

Neopixels for WS2812B + pigpio for 433 MHz in one project

I have bought a set of 433 MHz transmitters (XY-FST) and receivers (XY-MK-5V) The only way I got reliable readings out of them so far was with the pigpio library (rpi-rf for Python and 433-utils didn't work and I don't know if they would have this…
Sandro
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2 answers

Controlling WS2812b LED strip produces inconsistent and uncontrollable output

Background I'm trying to control a single WS2812b LED strip from a Raspberry Pi. I've followed this tutorial from raspberrypi.com (with the exception of Prep & Installation step 4, because I couldn't find snd-blacklist.conf). That didn't work, so I…
kviLL
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1 answer

WS281x library cannot access /dev/mem without root

I get this error from the rpi_ws281x library when trying to run as user pi (this is a java wrapper around the library): 16:43:59.060 [main] INFO com.github.mbelling.ws281x.Ws281xLedStrip - LEDs count: 1, GPIO pin: 18, freq hZ: 800000, DMA: 10,…
0__
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1 answer

Controlling WS2812 with a non-PWM pin

I was looking for a way to control WS2812 led without PWM pin (specifically I would use pin 4 (1-WIRE pin) to control WS2812). Is it possible? Thanks
GinoC
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1 answer

Which of the GPIO pins are suitable for controlling the WS2812 strips?

I'm running multiple (6), separate WS2812 strips off of one Raspberry Pi4. They each need to be running independently - so the strip running on pin D18 will be getting different commands to the strip running on pin D21. I am using a logic-level…
Andrew Earl
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2 answers

How do I connect a Raspberry pi to ws2811 LED lights through GPIO18 pin?

Before I start, I should note that I have never used a Raspberry Pi before, so my only experience is trying to get this project to work. I recently bought ALITOVE WS2811 12mm (5 V) LED lights in the hopes that I could hang them in my room and…
Will Rosenberg
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WS2812B individual addressable lights too slow

I have an rpi-0-w that I use to control WS2812B strip (300 LEDs). With one strip everything is fine, but when I connect 2 more strips, obviously, update speed drops. Is there a way to increase the update speed?
Nauris Grinbergs
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NeoPixel library slow with large number of WS2812B LEDs (Raspi3)

Noob here, I am currently working with a 10m long strip of 144LED/m density LEDs. The problem is with such a high number of LEDs loops (like a color wipe for example or filling LEDs one after another) take forever. I want to find a way to use the…
lakadibo
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1 answer

WS2812E Not lighting up

I am trying to use a WS2812E LED-Strip with the raspberry pi. I am using the HW131 Power Supply and a RaspberryPI 3B+. The LED strips GND is connected to both the HW131 and the RaspberryPI GND. The Strips +5V is connected only to the HW131, and the…
Max
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2 answers

Operation of GPIO pin affected by which HDMI moniotor I use

I have a Raspberry Pi 3B+, with a keyboard, mouse, and HDMI monitor connected to the Pi. It's being powered by a CanaKit power supply that came with the Pi. I have a string of ws2811 pixels that operate like NeoPixels (non-Adafruit-branded). (I have…
user3629081
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