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Questions tagged [ws2811]

LED driver IC from Worldsemi

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Is there a canonical way to signal WS2811/2812 LED strip?

The WS2811/2812 protocol is well-defined and hence the chip now seems to dominate addressable strip lighting products. People have managed to use SPI and UART to control it, and someone even did it ...
Milind R's user avatar
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1 answer
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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
1 vote
2 answers
112 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
56 views

Animating 3600 neopixels with RPi is slow

I have SPI RGB led strip with three wires connection: – TX1818 driver (manufacturer says “it’s compatible with TM1812, UCS1903, SM16703, WS2811–2815”) – 12V, 9.3 W/m, 5060, 60/metre – 3600 pixels, 60 ...
asvetly's user avatar
  • 111
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1 answer
649 views

WS2811 MOSFET driver - components help

I'm trying to build a board capable of driving 12 V, single-channel, non-addressable strips with the WS2811 protocol for my project. In my case I want to be able to safely switch up to 5 A (but most ...
AleMonti's user avatar
1 vote
1 answer
630 views

ws2811 lights flickering when powered with 12v but 5v works "okay", suspected PWM interference

Disclaimer: Not an EE, I just write code, so apologies if terms are wrong. Video demo of my issue here !!epilepsy warning!! My Setup I have several strands of ALITOVE ws2811 12v leds connected in ...
Stephen's user avatar
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1 vote
3 answers
384 views

WS2811 IC Supply Current

There are ten RGB LEDs and ten WS2811 ICs in my circuit. I'm trying to find out how much current the WS2811 IC draws from my 5 V supply. No information about supply current is given in the datasheet. ...
Kris888's user avatar
  • 11
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1 answer
289 views

Circuit with WS2818B and MOSFET SI2303 is not working

I want to make an LED driver like the https://oshwlab.com/arduino12/ws2811_driver but with WS2818B instead of WS2811 because of the backup data line. Unfortunately nothing happens when I put Data to ...
kokospalme's user avatar
0 votes
1 answer
68 views

What wire size is used on the Adafruit Ultra Bright 3 Watt Chainable NeoPixel LEDs?

We are talking about these guys: https://www.adafruit.com/product/4544 The current carrying capacity of those wires puts a limit on how long of a string you can have from a single power source.
bigjosh's user avatar
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1 answer
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Using the WS2811 as a vibration motor control

First of all I wanted to indicate that I am a novice and the solution to this question is probably obvious so I appreciate the readers taking time to leave a constructive comment. I also wanted to ...
BobLawBlog's user avatar
0 votes
1 answer
200 views

CD4053B Triple 2:1 MUX/DEMUX For Switching Three LED Channels To Multiple Zones

My last post (Multi-Zone Addressable RGB+CCT LED Mode Switching) got closed as off-topic because I was “seeking recommendations for a specific product”... I found on my own what I believe to be the ...
Matt's user avatar
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1 vote
1 answer
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Driving EL wire like a WS2811 LED

I'm thinking about driving EL wire as if it were a ws2811 LED for convenience of integration with actual ws2811 LED strips. The idea is that the WS2811 Red channel acts as the enable/control input for ...
Peter Mitrano's user avatar
2 votes
2 answers
2k views

ESP32 - Level Shift - WS2811 LED Strip - Data Signal

We are working on a new project in which we have designed and prototyped a new custom PCB to include an ESP32 in which we are controlling a WS2811 12VDC LED strip via Bluetooth. I am the business ...
MKAL's user avatar
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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
1 vote
1 answer
366 views

Knowledge requested for WS2811 Based RGB LED driver Module

Design of LED Module based on WS2811 LED driver IC (Only Red-channel is shown). To the right of the schematic you will find a simple, cheap and robust constant current LED driver. The current for the ...
Harry Viet's user avatar
0 votes
3 answers
9k views

WS2811 series: power consumption and voltage drop

I recently bought some WS2811 LED strips (these). I intend to connect 6 in series (6 * 50 = 300 leds), and I have some questions. In the datasheet and on the Amazon page it is written that each LED ...
Emax's user avatar
  • 101
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1 answer
97 views

How to determine max amps over a common ground between AC-to-DC Adapters?

How can I determine the expected and max current running over a common ground wire between DC of AC/DC converters? Should I fuse the wire? I have two 5V/40A AC-to-DC adapters (AC is 3-pin each) for x-...
Liam Kelly's user avatar
0 votes
3 answers
440 views

Controlling multiple solenoid valves like addressable LEDs

I am asked to implement a small indoor musical fountain which consist of around 45+ solenoid valves. Rather than having separate dedicated lines to the valves, I would like to implement something like ...
Sandeep Thomas's user avatar
0 votes
3 answers
3k views

Does level shifter have a maximum speed?

Of course it does, but what's it likely to BE? I have a string of WS2811 LEDs which accept a 5V logic signal. I am running them from a LoLin board, whose GPIO ports output 3.3V logic. I've put a ...
KDM's user avatar
  • 173
0 votes
1 answer
357 views

Drive a DC motor with a WS2811 chip

I'm building a robot that needs a lot of small hobby motors (or similar) to operate in sync. I was looking for ways to have as many of them controlled by a single source of logic as I am not sure I ...
ColumnB's user avatar
0 votes
2 answers
593 views

Addressable ICs similar to WS2811 for monochrome LED [closed]

For my home decoration, i want to individually address the led strings . Since one string is of a single color, i need an ic with serial communication similar to WS2811 ic but monochrome to control ...
amankrokx's user avatar
1 vote
1 answer
962 views

ESP32 ws2812fx BLE leds flicker and flash different colors

I am creating a device to use a bluetooth app to control the effects in the ws2812fx library on a esp32 thing from Sparkfun. It works great using the arduino serial monitor to update. But whenever I ...
user1166412's user avatar
0 votes
1 answer
290 views

Driving multiple (variable amount of) LEDs with WS2811

I am trying to control multiple LEDs with the WS8211. According to the specs, RR resistor shall be calculated based on the voltage drop on the red LEDs. So, my first question is: The formula is RR=(...
BUKTOP's user avatar
  • 210
0 votes
2 answers
413 views

How to drive up to millions of ws2812 or APA104 LEDs? [closed]

I've driven more than 2k of APA102 from a computer using a USB to SPI interface for an interactive project. Since then I've been curious how I could made the same setup for even a large pixel area, up ...
Luis Carlos's user avatar
0 votes
0 answers
310 views

WS2811 flicker to random colors when trying to turn them all off in a 3x3 array

I am trying to do more, but for starters, I am trying to write code to turn all of my WS2811 off that exist in a 3x3 array. Currently, when I run my Arduino project, they are flickering from red, to ...
hippoman's user avatar
1 vote
0 answers
3k views

WS2811 LED Strip Driver

I'm in the process of designing a LED strip driver using a WS2811 chip and 3 MOSFETs. I've attached the schematic below. I based it on the reference circuit in the WS2811 datasheet (link), and this ...
Murray484's user avatar
7 votes
1 answer
4k views

LED-driver board with WS2818/WS2811 and PT4115

I want to develop a board with a WS2818 IC and three PT4115 as high current LED drivers. Input voltage shall be 12-18V. You can easily mount a Wemos D1 Mini ESP8266 board on the top edge, as the pins ...
Spatz's user avatar
  • 169
0 votes
0 answers
997 views

Red divider resistors for 5050 RGB strip coming from WS2811 chip

To split up a WS2811 data signal into discrete 5050 RGB 12V LED signals, I followed the example on the WS2811 datasheet and hooked up its outputs to a separate power supply. This example shows one ...
Breina's user avatar
  • 125
0 votes
1 answer
258 views

multiple strings ws2812 chip led

I want to connect 8 strings of addressable LEDs so the strings do exactly the same thing at the same time. All 8 strings start at the same point, but radiate outwards. Would the controller be able ...
Alan's user avatar
  • 1
0 votes
1 answer
283 views

busted WS2811 LED strip by overpowering, totally useless now?

Powered a 5V WS2811 LED strip with 12V by accident. It turned on for a split second, it fried a microcontroller, I noticed the smell and turned everything off as fast as I could. When i tried ...
evsc's user avatar
  • 467
0 votes
3 answers
3k views

How to implement constant current LED driver for WS2811?

I want to use WS2811 to drive high current LEDs. As it is mentioned in the datasheet this chip provides 3 channels with 18.5mA constant current sinks. Maybe what I need is a simple PNP BJT with ...
ahmadx87's user avatar
  • 405
0 votes
0 answers
916 views

5v/2.1A Power Bank batteries powering LED strip dropping output at 260mA

I am having an issue with powering a 30 x ws2812 RGB LED strip with a 5v/2.1A "power bank" battery. The strip is controlled by an Arduino Pro Mini(-ish) clone (3.3v @ 16 MHz) (http://www.anarduino....
jbrogdon's user avatar
  • 101
2 votes
1 answer
153 views

2 meter data cable to rgb LED

I need to run a 2 meter data cable from an Arduino UNO to a series of 40 RGB LEDs with integrated WS2811 drivers. What kind of cable do I need? Do I need something between the cable and the first rgb ...
Erik's user avatar
  • 41
0 votes
1 answer
256 views

power and fusing for first mains-powered project (100x WS2811 (RGB LED))

I'm a software guy who's done simple Arduino projects powered by a computer but doing my first project which involves mains/"wall" power. Working backwards: 2x 50-LED chains of WS2811 addressable ...
Swiss Frank's user avatar
0 votes
3 answers
421 views

WS2803 12V Strip Controller

I have made a circuit that is meant to control 12V LED Strips using a WS2803 Chip. The problem I am having is that the L7805CV regulator reaches 80°C while the 1k resistor bank reaches 40-50°C. ...
Mike's user avatar
  • 1
0 votes
2 answers
3k views

High currents LED switcher circiut for WS2811?

I am making one High Amp for WS2811 RGB LED driver in range 2 Amp, SO base on it's Datasheet the driver working by this way: there are some switcher circuit similar to this : But this kind of ...
Soheil Paper's user avatar
1 vote
1 answer
3k views

Arduino Uno only lighting up 3 of 8 LEDs in WS2812 Strip

I have an Arduino UNO driving a 8 x WS2812 strip but only the rightmost three of the strip are lighting up. The UNO should be able to deliver current for more than 3 WS2812s. That previous link states ...
N Klosterman's user avatar
3 votes
2 answers
5k views

Driving WS2811 LED strip from microcontroller

I'm planning to drive the input of a WS2811 based LED strip (total approx 450 LEDs) from a microcontroller/arduino, as per the diagram below. Do I need a transistor, buffer or anything else between ...
steve cook's user avatar
2 votes
1 answer
636 views

Impedance matching resistor for ws2811?

I want to design a circuit using ws2811 on page 5 of the datasheet It says "To prevent the reflection and hot-swap protection, we suggest to connect a 33ohm resistor at the data input or output port ...
ahmadx87's user avatar
  • 405
1 vote
2 answers
6k views

Driving high power LED using WS2811 or WS2801

I want to use either WS2811 or WS2801 to drive high power LEDs with spacing between LEDs up to 15 meters. These are going to be used outdoors or in a water feature. As you know WS2811 output is ...
ahmadx87's user avatar
  • 405