Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [led-strip]

The tag has no usage guidance.

1
vote
1answer
550 views

FastLED fill_rainbow - Unexpected red pixel

I'm using FastLEDs builtin fill_rainbow function for generating a rainbow spectrum on an LED strip. The issue is, I get a random red pixel midway through the yellow region. I've tried it on 3 ...
0
votes
1answer
45 views

Controlling a 5m LED strip with a Nano or Uno

I'm wanting to control a 12V LED strip (5m, 60 LEDs per meter) with a Nano or Uno. I know from Adafruit that I'll need some power transistors but I'm not sure that I have the right type. I have 6 ...
0
votes
1answer
49 views

Strange artifact in writing to serial while executing loop

Hope you can see this. https://gist.github.com/DevilWAH/60ad144d2858f53845ac2e80f84bb070 The main file in this is "morse-led-rfid" which is taking reading data of an RFID tag and then displaying ...
0
votes
0answers
46 views

Programming POV Display for Arduino

I can maybe work through a php/sql and css/html method of making a website to convert an image to code, but that is currently a time consuming method (which i will be taking the challenge if doing ...
-1
votes
2answers
43 views

How to power Arduino nano and LED strip?

I am making a project that uses an Arduino nano and a sound detector module to power a 1m LED strip. I got the idea from this video and I am not sure how to power it. My LED strip flashes for a split ...
1
vote
1answer
41 views

Using 18650 batteries with a 3.7v to 5v boost converter [closed]

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 ...
0
votes
1answer
110 views

MIDI keyboard controlled LED strip

My objective is to light a led on a strip corresponding to a keyboard note. I have Arduino Uno with MIDI in module hooked up to a serial port. Piano is hooked with a standart midi cable, Led Strip is ...
0
votes
2answers
102 views

WifiClient and aREST on esp32 - loop until new instructions recieved?

I've created a simple sketch for an esp32 that hosts a REST API that can be accessed via HTTP. Based on the instructions received from the client, the esp32 controls some neopixels with some various ...
0
votes
0answers
89 views

FastLED Rainbow Wheel Fade on an 8 Pin RGB Matrix

So, I have an RGB matrix (using PL9823 LEDs) that's 32 x 8 that I'm trying to run a circular spinning rainbow pattern across in a continuous loop. Now, there's lots of code online for different ways ...
0
votes
0answers
41 views

Audio Signal to LED Lights Code Speed Improvement

I wrote this code that inputs audio from a jack (DC offset at 2.5V), performs the fft on a portion of the data, and then outputs a signal to an LED light strip dependent upon which frequency has the ...
0
votes
0answers
49 views

Arduino Uno and FastLED WS2812B Glitching

I’m using an Arduino Uno and a fastLed WS2812B. I have the leds set up correctly. Every 2 seconds, the lights pause of about a second and display seemingly random colors. Does anyone know what's ...
2
votes
3answers
3k views

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 ...
0
votes
3answers
229 views

WS2812B LED strip + Arduino First Pixel keeps dying/breaking

I am trying too hook up a WS2812B LED strip to an arduino nano. The current strip consists of 6 pixels, and the whole thing is powered via a 5.26V Pc power supply. The problem is that the first pixel ...
0
votes
1answer
51 views

Stacks on arrays on arrays

I am trying to find a "vanilla" way of writing several arrays into one. I spent a lot of time searching for how to do this but everything that comes up is either a tutorial that doesn't cover ...
1
vote
3answers
50 views

Do I need the Ground and 5 V pin connect to Led?

I am building an ambilight. So I bought a 3 pin LED Strip which I power with the USB hub from my TV. Next step is to connect it to the Arduino Nano. Is it OK when I only use the dataport from the ...
0
votes
1answer
195 views

RGB LED strip 100m [closed]

Hello all, I'm working on RGB LED strip SMD 5050 5m This all setup is working on 12v 2A with about diagram. I want to use same connection with 100m of LED strip using Arduino. Please support ...
0
votes
1answer
66 views

Powering Arduino and LED strips from one adapter

My project has my Arduino controlling 10 led strips. I'm going with a plan by @gre_gor that is posted here: Setting 10 RGB Strips Independently from Single Arduino ...where each strip is controlled by ...
1
vote
4answers
114 views

for() loop doesn't seem to break?

So I'm quite new to the whole Arduino coding but constructed a sketch that does work, but I think it doesn't work properly. So I'd love to get some advice on how to improve it. This script is ...
0
votes
1answer
177 views

RGB LED strip controlled through PySerial only somewhat functional

I am trying to set up an LED-strip of 30 RGB LEDs (model WS2801). The strip is connected to an Arduino Uno and an external power supply and the goal is to send colors to the arduino using PySerial ...
0
votes
0answers
98 views

How to connect an addressable (ws2811) led-strip with long cable to an adruino?

I set up a light show on my Arduino and it worked perfect when I tested it. I connected the the data line of my 1 meters (3.2ft) of addressable ws2811 ledstrip direct on the breadboard next to the ...
0
votes
1answer
184 views

Is there any problem in running Arduino logic to 12V LEDs?

I want to run a strip of 300 12V LEDs (Adafruit Neopixels with WS2811), with my Arduino. Is it safe to connect a follows, or is there some "separation" between voltage levels needed? 5V voltage/out ...
2
votes
2answers
64 views

How to measure room light without LEDs interfering?

I'm trying to measure the light in a room with a simple circuit: a phototransistor connected in series with a resistor. An LED strip changes brightness according to the brightness level in the room. ...
1
vote
1answer
278 views

RGB LED strip inverted PWM

This bug/stupidity-of-myself/problem is killing me: I'm have created an RGB strip controller that cycles through the additive-rgb-color spectrum while turning a potentiometer. I have a pot hooked up ...
4
votes
2answers
135 views

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 ...
3
votes
2answers
998 views

Setting 10 RGB Strips Independently from Single Arduino

I want to control 10 different 12V RGB LED strips independently from a single Arduino. As a clarification - I've setup a bunch of NeoPixels and understand how to wire and control them independently. ...
0
votes
1answer
624 views

RGB led strip is too dim

I'm following this tutorial to build an Arduino powered RGB led strip controller but I'm facing two problems: When I use digitalOutput the lights are too dim. When I use PWM the leds change so ...
0
votes
0answers
105 views

Lighting up long led strip no longer works when my code grows

I have a 144 LED strip - Adafruit NeoPixel Digital RGB LED Strip 144 LED, link here: https://www.adafruit.com/product/1507 If I create a simple project, eg turning pixels on off from the serial ...
2
votes
1answer
918 views

Control LED strip IR controller using Arduino

Is it possible to connect to one of these, which run at 12v, to turn on the LED strip using an ESP8266? It doesn't matter if it's an Arduino or the ESP8266, both should be able to do this. The board ...
1
vote
0answers
143 views

Run 5V LED Matrix and LED Strip on one Arduino [closed]

I am fairly new to the Arduino community but have electronics and programming experience. I was able to connect and run a 5V RGB 8x32 LED matrix on my Arduino displaying some running text. Now I would ...
0
votes
1answer
51 views

RGB LED strip green LEDs cannot be dimmed to less than 50%

I have an RGB LED strip which I want to control with my arduino uno, everything works fine, except for the green LEDs. They cannot be dimmed to less than 50%, because they will simply turn off. I ...
0
votes
2answers
128 views

Attiny13 project with leds and electret microphone

I want to make a project similar to this Turn Signal Biking Jacket . But, instead of using Arduino Lilypad I want to use an 8 pin attiny13A-SH and want to use one electret microphone instead of the ...
0
votes
1answer
1k views

Connect optocoupler 4N35 to Arduino Uno to control LED light strips

I want to use an Arduino Uno to control the LED light strips, based on the input signal from a robot controller. The robot controller sends a digital signal with "HIGH" of 24 V and "LOW" of 0 V. I ...
1
vote
1answer
612 views

Do I have to wire up my WS2812 LED strip in “series”, if I want to address each LED individually?

Let's assume I want to make an asterisk (*) out of LED strips. I want to control each leg individually, while still being connected to only one GPIO pin. The layout I had in mind, looks like this: ...
-1
votes
2answers
157 views

How to identify RGBW LED pins? [closed]

I have a RGBW LED but I don't know how to identify the negative and the colors pins. I tried different combinations with an Arduino Uno but it never produce light. I never used it so I am not sure ...