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Questions tagged [ws2812]

An RGB LED, when run in a strip, is individually addressable.

47 questions
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How to deal with unusual neopixel grid

I have built a custom installation in my home with 896 WS2812 LED driven by an ArduinoMega 2560 and powered by several rails just fine. However, the installation is arranged in a checkerboard-like pattern. There are 14 panels with 8 strips of 8 LED…
GhostToast
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FastLed LED Strip Output Checksum

I am wondering if anyone has ever connected the output of their LED strip back to the Arduino to read and make sure the strip is functioning correctly, kinda like checksum functionality. I am using the FastLed library and it doesn't appear that this…
Jorb
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Battery for WS2812 Strip? (Something's not right)

I have posted this in a few places, so sorry if you have seen it somewhere else Im working on a battery powered led strip project, iv put the project together and have been testing with a mains power supply Iv run some tests and found at max I'd be…
Thomas PomTom Steel
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Using 18650 batteries with a 3.7v to 5v boost converter

I'm looking to set up a 1-meter strip of WS2812B LEDs (60 LEDs) with an off-the-shelf RF LED controller with a remote. The LEDs want a 5V supply - I've tried running them off 3.7v but the colour accuracy goes out the window and they start flickering…
poolski
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Coding issue with Fast LED Multiple Colour Palettes in a State Machine

I am working on a project using the WSB2812B LED strip, with a ATmega644A using the MCUdude/MightyCore plug in (https://github.com/MCUdude/MightyCore). I am using Fastled 3.3.3 with Ardunio 1.8.13 on Windows 10 and is using code based on…
Newbie
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Switching from one color to another

I'm using ws2812b 2x2 LEDs and have it switching between green and red, but only one of my LEDs on my 2x2 is lighting up. I'm using the "blink" FastLED sketch with Data pin 3 on my Arduino Uno, define led 4. void loop() { // Turn the LED on, then…
Darcy Billings
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How to determine what resistor value to use for LED strip

I'm trying to use an ESP8266 powered by my computer through USB cable to control a WS2812B LED strip. I've read online that you're supposed to put a resistor before the data channel to help prevent noise but I'm struggling to figure out what the…
drunkenspider
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WS2812B Power Supply

I have a WS2812b addressable RGB led ribbon that is 5m (150 RGB leds). I purchased a 5v 10amp power supply to power it; however, whenever I try to use it to power the LED strip the leds start flashing colors like crazy. Is there a reason I would be…
Phillip Clontz
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Control multiple WS2812B strips with different leds count

First of all, my English is not that good so sorry if I made any mistake. I'm using the WS2812FX, an awesome WS2812 effect library base on Adafruit NeoPixel library to make a small controller for the lightning in my bedroom. The question here is…
PhuocBull
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WS2812b - Interpolate pixels on neopixel matrix with mask

simplified my goal is to display a transitional Background and some shapes. This shapes are not moving hard rasterized by 1 pixel, more like .1 each cycle. So I need a way to interpolate the movement between the surrounding Neopixels. Background…
AngelOfEffekt
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FastLED web client, clicked on page to control on and off for ws2812

FastLED web client, when clicked on, all RGB on in red color. Clicked off, all RGB off/black. but not work. Here is the full code, i don't know why it's loop always and web client stuck when i clicked on button on webpage I can not turn on all LED,…
user2470155
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How can I clear two FastLEDs strip ws2812b separately? One strip is connected to pin 7 of UNO and other strip to pin 6 of UNO

The power supply is external. I want to clear one strip say pin 7, and meanwhile i dont want other strip say pin 6 to switch off...I use FastLED.clear(); FastLED.show(); But it clears all the led strips connected to pin6 and pin7. What is the code…
Dhruv Rastogi
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Power LED Matrix With LiPo Battery & ESP32

I want to power an ESP32 with a 3.7V LiPo battery. There's a LED matrix of 64 WS2812 LEDs attached to the ESP32. I learned that I need a buck boost converter to power the microcontroller as it needs a 5V power input. The boost converter delivers…
Joh
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WS2812B Reset time

i am trying to implement the ws2812b with an atmega8,but i didn't understand a thing very well. if i pull low for >50 us, it says it resets, but what does that mean? it resets the current LED all data to 0 and latches the next data to the next led?
SoxxZ _
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Can FastLED be made faster?

I am using FastLED to drive 16 pixels on an addressable WS2812B RGB LED strip. My application has extremely tight timing constraints. Specifically, I need to turn the LEDs on and off within less than 1 ms. I tried FastLED but it requires a minimum…
Johann
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