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Questions tagged [ws2812b]

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Is brightness for WS2812B LED voltage dependent?

I understand that this would be true for any other regular LED. The doc states that it accepts +3.5~+5.3 V. I was wondering if it is somehow internally converted to operate at the same level as long ...
somerandomusername's user avatar
0 votes
1 answer
45 views

Design RGB Strip with WS2813 on 24 V?

I am in the process of designing a PCB with RGB LED's. I wanna control them with NeoPixel. And it has to be supplied with 24 V. Right now for reference (see picture) I have a LED strip with segments ...
Jesper Egsgaard Nielsen's user avatar
4 votes
3 answers
909 views

Did my WS2812B strip come with wires way too small for what's needed?

I bought it on Amazon, so it's pretty much a no-brand, no-specs, product, but the product page says 0.24W per LEDs and it has 300 LEDs, 72W (woa!). At 5V that would be 14.4A (double woa!). It uses the ...
Pablo Fernandez's user avatar
0 votes
0 answers
40 views

PCB usb powered - led and screen wiring + review schematic

I'm currently designing a PCB featuring an STM32F103CBT6 MCU. The PCB will host five different groups of WS2812B LEDs, multiplexed 22 pushbuttons, 4 rotary encoders, and additionally, a VoCore 5" ...
Djowwie's user avatar
  • 11
1 vote
1 answer
123 views

Individually Addressable LED overheated

Update (19.3.24) I checked the LED string with a multimeter. The + and - wire of the burned LEDs are connected, whereas the new LEDs do not have a connection between the + and - wires. I checked the ...
TLB's user avatar
  • 11
0 votes
0 answers
76 views

Sporadic flickering for (very) long WS2812 strips

I haven't found any information (almost anywhere, searching for weeks already) that goes beyond my research. I hope someone has a tip/idea/hint. Maybe my research helps others too. Connected are 5120 ...
cakepi's user avatar
  • 1
0 votes
0 answers
27 views

Christmas light driver, two wires, 24V

I've got a Christmas led chain ( a waterfall actually ) with some troubles so I tryed to look at it... it has an only two wire bus, with a DC 24V i can measure on. I read about the ...
Felice Pollano's user avatar
-1 votes
1 answer
732 views

ESP32-WROOM-32 and WLED not communicating correctly to WS2812B LED strips

I am trying to follow Youtube tutorials to run WLED (a program) on an ESP32-WROOM-32 board I purchased, to control addressable LED strips (WS2812B). I bought a board that does not exactly match the ...
Eric Brown - Cal's user avatar
0 votes
1 answer
99 views

Is 5.4 to 5.5 volts ok for WS 2812B Led Matrix? [closed]

I tried buying a cheap LED power supply ALIDOVE BRAND. I checked the voltage without/with Arduino and the LED matrix connected. It's always 5.5 volts but it's working in its intended purpose - a clock ...
Lester  Therr's user avatar
1 vote
2 answers
111 views

IC suggestions for WS28xx like functionality for driving transistors

I'm trying to light up string lights that run off of 12v taking up 500mA. I'm using BC337 NPN transistor to turn individual string lights on/off where all of them are connected through a DC rail of ...
amankrokx's user avatar
1 vote
0 answers
143 views

WS2815 circuit erratic behaviour

I have been having problems driving WS2812 LEDs; the radiated emissions were too high to pass UK tests. See Radiated emissions from WS2812 LEDs I finally bit the bullet and went for LEDs on a printed ...
srlevitt's user avatar
1 vote
0 answers
72 views

LED strip cable and connector sizing

I'm trying to power a LED strip. It contains 140 WS2812B with 60 LEDs/m so it is around 2.3 m. According to the datasheet, the LEDs has a 60 mA current consumption. Based on the pure math its 140*60 = ...
user2936050's user avatar
0 votes
1 answer
60 views

Control WS2812B LEDs independently

I am using three WS2812B LEDs in my PCB and are connected in series with each other. Is there a way that I can control each LED independently rather than controlling all three together? For example ...
Zunuran Nasrullah's user avatar
1 vote
0 answers
97 views

The best way to step down 12V to 5V with at least 10A current from a PS3 power supply for a WS2812B LED strip

I am new to electronics. I had a PS3 Super Slim power supply lying around, which outputs 12V up to 13 amps. Recently, I bought a 5-meter strip of WS2812B LED strip, which needs 5V, and the recommended ...
Fahis thayyil's user avatar
0 votes
1 answer
54 views

Lower current than specified with LEDs' calculations for power supply

I have 1 meter of this ledstripe with 144 LEDs per meter. It is specified: 144 diodes/m = 34.56 W/m That would make 6.912 A per meter. But when I connect them and ...
acroscene's user avatar
  • 179
0 votes
0 answers
76 views

AC adapter interfering with WS2812B LED strip

I have 2 power adaptors connected on same AC line, both grounded. Power adapter 1: 12V DC 10 A for powering 12 V LED strips, controlled by ESP8266, IRLZ44N MOSFET used to control brightness of the LED ...
m4X's user avatar
  • 1
1 vote
3 answers
343 views

How to connect WS2812B strips to all show same animation?

I have a 3 meter WS2812B strip that I want to connect to a NodeMCU in a very specific way. I want to cut the strip down to six 20 cm segments but I don't want the animations to "snake" from ...
John Anderson's user avatar
0 votes
1 answer
88 views

Long term availability of WS2812B or any Neo-pixel

I am considering the use of Neo-pixel or WS2812B components in a project that we are planning to run for the next ten years with mass-scale production. I am curious about the feasibility of sourcing ...
Sohaib Qamar's user avatar
0 votes
2 answers
736 views

How to power an ESP8266 + LED strip correctly?

I would like to power ~100 LEDs from an WS2812 LED strip and an ESP8266 with my power supply of 5V / 5A. I've read a lot of tutorials and advices but I'm still not 100% sur that all my assomptions are ...
Seba99's user avatar
  • 103
0 votes
0 answers
69 views

0.1μs delay for AT89C51

I need to follow WS2812B protocol, which requires communication with very high speed, like 0.4μs, 0.45μs, etc. Can I achieve it with AT89C51?
Sasisa Play's user avatar
0 votes
1 answer
41 views

Can we use NMOS to drive WS2812

My ESP32 control circuits all use NMOS for external control. I wonder if the data control of WS2812 can be driven via NMOS?
murarduino's user avatar
1 vote
2 answers
209 views

Need help designing a PCB that works the same as a neopixel would (WS2812)

I am currently working on an LED clock project, and one of the things I would like to use is the SMDs found in WS2812B neopixel. I could simply use the LED strip itself, but I wanted to use a custom ...
Win Win Tjong's user avatar
0 votes
0 answers
98 views

Pixeldriver P9813 with HP LED driver AL8860WT - transistor/Mosfet needed?

Refering to my previous question, I want to drive a bunch of High power LED drivers (Datashsheet AL8860WT-7) With a Pixel-IC (Datashsheet P9813). This is my concept: My project so far: connecting the ...
kokospalme's user avatar
0 votes
1 answer
54 views

Control WS2812x from open collector output

I have a board with digital output that is based on open collector Darlington driver (providing up to 500mA) and I want to use that output to control WS2812x LED strip. What should the circuit look ...
0wl's user avatar
  • 117
0 votes
0 answers
154 views

ESP12 with WS2812B first led always stays on

I'm making a custom remote with esp12 and 3x WS2812B led, while making the main code i discovered a problem, the first led in the series always stays on when trying to execute an example NEOPIXEL code ...
Reinis's user avatar
  • 1
0 votes
1 answer
353 views

Is it possible to connect 5v and Ground to opposite ends of ws2812b LED strip to prevent voltage drop?

I'm currently working on a LED project with WS2812B LED strips with 30LEDs/m. After a couple meters at full brightness the color gets red because of the voltage drops. Is it possible to connect 5v to ...
veryslothysloth's user avatar
0 votes
1 answer
536 views

WS2812/15 opto-isolated with 6N137 and MOSFET?

The goal I want to isolate a 3.3 V MCU (ESP32 C3) from a WS2815-Strip but I had no luck so far. I already read these threads, because I think they're dealing with a similar problem: MOSFET - 800 kHz ...
kokospalme's user avatar
0 votes
1 answer
241 views

WS2812B-2020 / NeoPixel issue with random colors and brightness

I created an LED picture on a big PCB with almost 2000 WS2812B-2020 LEDs. The bottom layer is round, and the top layer is 5V and has the LED signal routes. I use a Pi Zero with a 74AHCT125 to control ...
Klausmaus's user avatar
0 votes
1 answer
58 views

LED data integrity inconsistency issues using Raspberry Pi

My Raspberry-Pi controls 480 LED's on a WS2812b- strip. I have cut the strips into the shape of large digits and soldered these strips of 4 or 5 LED's together to create the number '8'. I then decide ...
Ian's user avatar
  • 1
0 votes
2 answers
99 views

Power supply parameters to be used for WS2812B addressable leds

I bought WS2812B addressable leds. LED strip has a length of 5 meters and has 144 LEDs per meter. So there are 720 LEDs in total. I want to control this strip led with Raspberry Pi. I want to use ...
python_student's user avatar
0 votes
0 answers
72 views

Common-output WS2812 LED strip alternative control

I try to build an RPi controlled LED strip, however, while the Linux is booting, I still want a minimal effect on the LED strip. So my idea is that once the device gets voltage, a cheap ...
samsmith94's user avatar
0 votes
0 answers
213 views

WS2812 LEDs with ESP32-schemantic

I have a WS2812 LED module I want to interface with an ESP32. I want to use a button and a sensor to control the LEDs. I am not sure if the schematic is OK. Do I need a resistor for the LEDs, and if ...
DesperateProgramer's user avatar
0 votes
0 answers
92 views

Best approach to driving custom RGB mechanical keyboard LEDs

I am in the middle of designing a custom mechanical keyboard and have just finished the PCB schematic, but before I spend a few hours placing and routing components, I thought I might ask y'all a few ...
mistasef's user avatar
0 votes
0 answers
176 views

WS2812b with Wemos D1 Mini: first LED has a constant color, further ones stay dark

I'm trying to connect a WS2812b LED strip to a Wemos D1 Mini. I'm powering the strip from the 5V pin of the D1 (which is powered from USB). The data pin of the first LED is connected through a level ...
Grzegorz Nosek's user avatar
1 vote
2 answers
291 views

How to produce a perfect color wheel using an RGB LED?

I am trying to produce a perfect color wheel using a bunch of WS2812 RGB LEDs. My current attempt is to convert HSL (H = angle in color wheel, S = 100%, L = 50%) to RGB and send the RGB to the LEDs. ...
Daniel's user avatar
  • 111
0 votes
0 answers
94 views

What is the correct way to connect a power supply to an Arduino and LED strip?

I am working on a project with a 5 V 15 A power supply with a barrel connector. What is the proper (safe) way to connect this to an Arduino and also power a WS2812b strip? I can't power the LEDs ...
Blueman101's user avatar
0 votes
1 answer
813 views

What wire rating do I need for a WS2812b LED strip?

I am looking to make my first Arduino project. I use 140 LEDs of a WS2812B strip. I've got a 5 V, 15 A power supply plugged into a breadboard that goes to my Arduino and my LED strip. I have a roll of ...
Blueman101's user avatar
0 votes
1 answer
307 views

ws2812b + ESP32 + 2 meter wires

I have a WS2812B Led strip, and use a ESP32 with FastLED. It works great, as long as the led strip is near the ESP32. as soon as I add a 2 meter extension cable between the esp and the leds it stops ...
sharkyenergy's user avatar
-1 votes
1 answer
239 views

Fusing power injected LEDs from both sides [closed]

I am involved on a project where we will be installing thousands of LEDs (WS2812B Addressable strips) on the floor. I have a question about about fusing and if there is a more efficient way to go ...
WirelessTaco's user avatar
0 votes
0 answers
120 views

How can I test WS2812B 5 m 60 LEDs/m with NodeMCU?

I bought this WS2812B 5 m 60 LEDs/m. I want to know if it works properly. I have a NodeMCU 1.0 and I recently bought a 5 V, 10 A adaptor for these but the damn thing still only lights up the first LED ...
Akash Talware's user avatar
1 vote
1 answer
115 views

Arduino USB Protection

I am an absolute novice when it comes to electronics. I want to use a PC to control an Arduino UNO clone that will in turn control a strip of 122 neopixels. My fear is that I will somehow damage the ...
Clamps's user avatar
  • 13
1 vote
0 answers
54 views

Ardunio Errors with ATmega644A Fastled (MCUDude Mightycore)

Good Morning, I am trying to compile a ardunio project with ATmega664A using the MCUDude MightyCore plug in while using the Fastled library. I have used this before with ATtiny167 with Spence Konde ...
Newbie's user avatar
  • 127
0 votes
1 answer
691 views

Addressable LEDs (WS2815): power and data in a multicore cable

Would it be possible to use a multi-core cable to have power and data in the same wire? I'm using WS2815 LEDs. The total current needed is 9.6A. For a cable of 8 meters, a 2.5mm wire is needed. ...
Mark's user avatar
  • 19
0 votes
1 answer
269 views

What's wrong with my wire connections? (LED strips only getting ~1 V)

I'm trying to make an LED strip work, with these parts: A WS2812B LED strip (60 LEDs/m), 5V An Alitov 5V 15A power supply An Arduino Nano My issue is that the strip isn't getting the 5v it requires. ...
IronWaffleMan's user avatar
0 votes
3 answers
187 views

Use CAT 5 cable to control LED with ESP-12E

I plan to use the ESP-12E's GPIO pin to dim a 12 V LED strip wire and control a 5 V [WS2812B] 1 panel via CAT 5. I tried using a 10 ft CAT 5 cable to link the ESP12E pin to the DIN pin on the WS2812B ...
Barry Allen's user avatar
2 votes
1 answer
260 views

WS2812B NZR protocol at 8 MHz ATMEGA328 doesn't work

Related with my old threads, I'm trying to set up ATMEGA328 at 8 MHz, in this way I could supply to ATMEGA328 with 3.3 V. I'm trying to make it by these lines: ...
Juanma's user avatar
  • 390
0 votes
1 answer
137 views

Noisy behaviour of multiplexer 74LVC1G157

I'm trying to use a WS2812B addressable LED with a multiplexer 74LVC1G157. The WS2812B uses NZR protocol comunication at 800 Kbps and each pixel scan frequency not less than 400 Hz. I have test code ...
Juanma's user avatar
  • 390
0 votes
1 answer
54 views

NZR signal and multiplexer 74LVC1G157

I'm trying to use a WS2812B addressable LED with a multiplexer 74LVC1G157. I have test code on an Arduino, and if I connect the LED to I0 or I1, the color of the LED changes, but the delay selector ...
Juanma's user avatar
  • 390
0 votes
2 answers
173 views

Flashing random LEDs when multiple wires fished through hole

I've been building a large, 3D printed dodecahedron infinity mirror. Prior to adding the polycarbonate pentagons with mirror film applied, the LEDs worked perfectly in the frame. Once I fished the ...
lakerice's user avatar
  • 185
4 votes
6 answers
5k views

Powering two 5 V strips using a 12 V power supply

I'm working on a lighting project for a van build out. I'm using 12 V car batteries that are solar-powered. I know that I can use WS2811 strips that are 12 V strips and power them directly off the car ...
JackKalish's user avatar