Questions tagged [ws2812b]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0 votes
0 answers
23 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 ...
user avatar
1 vote
1 answer
45 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 ...
user avatar
  • 13
1 vote
0 answers
33 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 ...
user avatar
  • 87
0 votes
1 answer
89 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. ...
user avatar
  • 25
0 votes
1 answer
120 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. ...
user avatar
0 votes
3 answers
95 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 ...
user avatar
1 vote
1 answer
74 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: ...
user avatar
  • 340
0 votes
1 answer
88 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 ...
user avatar
  • 340
0 votes
1 answer
33 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 ...
user avatar
  • 340
0 votes
2 answers
95 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 ...
user avatar
  • 185
4 votes
6 answers
2k 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 ...
user avatar
2 votes
3 answers
123 views

PCB design, 30 5 V LEDs per board (probably 6)

It's my first time designing a PCB. I had the idea to make a pyramid out of (probably) 6 same PCBs. Each pyramid would have 30 WS2812B B LEDs. Online I read that on the one side you should be ...
user avatar
1 vote
0 answers
77 views

Did I burn out the data pin on my LEDs?

I had my 500 WS2812Bs working. Power injection all along and they were working good for the most part. They had a little flicker when they turned white so I was adding the recommended resistor and ...
user avatar
0 votes
1 answer
327 views

WS2812B absolute max voltage

The data sheet I have from the WS2812B is found here. I can see that there is a defined operational voltage that puts it below 5.3V. It doesn't mention an absolute maximum voltage which I am ...
user avatar
  • 123
0 votes
0 answers
104 views

Cannot set up WS2812B LEDs with bit banging and ATmega328P at 16MHz

I have an ATmega328P (16MHz extern, GBoard with SIM900 module). I bought 10 LEDs with WS2812B module. My ATmega works with 3.3V but for LEDs I need 5V so I decided to connect TXB0104. I connected ...
user avatar
1 vote
2 answers
223 views

High-frequency voltage conversion (3.3V control of Neopixels)

I have repeatedly heard that control of Neopixel LEDs running at 5v requires special voltage conversion when using a 3.3v processor, as the 3.3v control input is actually out of spec for the WS2812B ...
user avatar
0 votes
2 answers
219 views

Powering this circuit off 3A USB charger, but it's only supplying 350mA

I have a very simple circuit for a small RGB lamp I'm building. My plan was to power it off one of my many spare old USB phone chargers via micro-usb. It's just a string of 60 WS2812B LEDs with a ...
user avatar
1 vote
2 answers
253 views

WS2812B PWM Noise Interference

I am somewhat new to electronics and I am encountering an issue with a WS2812B LED Strip and noise from other PWM data lines near by causing the LED strip to flicker. I am using an NodeMCU ESP8266MOD ...
user avatar
  • 111
0 votes
1 answer
58 views

Can I connect a 1A device to a USB 3 port?

All, If I were to connect 16 WS2182b LEDs in series (16*0.06=0.96A) and an Arduino to a USB 3 port on my PC (0.9A max I think), would my PC/USB controller get fried or would the LEDs just run dimmer? ...
user avatar
  • 3
0 votes
0 answers
160 views

WS2812B-8 Strip has two grounds. Is one a signal ground?

I'm running 5 x WS2812B-8 RGB LED strips off an ESP32. The strips have 4 pads on each end: (from top to bottom) GND - Is this signal ground? In / Out - Signal VCC - 5V GND - Is this power ground? I ...
user avatar
0 votes
1 answer
516 views

WS2812B first LED flickering Wemos D1 mini

I'm running 110 WS2812B LEDs with an Wemos D1 mini clone (AZDelivery) and the first LED flickers and won't even turn off but rather show red or green. I changed the data line cable several times, ...
user avatar
  • 49
0 votes
2 answers
192 views

WS2812b flickering at low levels

I'm having trouble with a circuit I'm building using WS2812b LEDs. The 41 LED pixels are connected to the D3 pin of a Wemos D1 Mini. They are powered by a sufficient strong power source, with a power ...
user avatar
0 votes
1 answer
124 views

Need help with standalone circuit; atmega328p and WS2812

I have a problem involving those two modules, can't keep them work together in board for more than 30 secs. Randomly, leds WS2812D-F5 w/ WS2812B-B, starts to turn on when should be off and then all ...
user avatar
0 votes
3 answers
114 views

Drive very long WS2812B RGB strip (80 meters) [closed]

I have to drive an 80 meters long RGB strip. 100 LEDs/m. What's the best option? I read Arduino hasn't enough RAM to drive them all so I was thinking about split the strip in slices and every slice be ...
user avatar
  • 1
0 votes
3 answers
98 views

Does a USB port provide enough power for my LED project?

I'm not quite sure whether or not my LEDs will draw too much current. I can't put the schematic right now, but basically I'm using just using the power line from the USB 2.0 port on my board, and it ...
user avatar
0 votes
1 answer
451 views

WS2812 LED Flickering

Ihave a problem. i need to solve is as fast as possible. Maybe someone here has an idea what to do. I have WS2812 LEDs. Beetween each pixel is 30cm cable. I have to drive about 150 pixels of them ...
user avatar
1 vote
3 answers
358 views

Flickering LED strip when dimming

I have a 5m LED strip (Ultimate Fancy LEDs) that consists has 30 LEDs per meter of WS2812B chips. Is uses a SP601E Bluetooth controller and was delivered using a 5V/6A power supply. Out of the box, ...
user avatar
0 votes
3 answers
223 views

Do I need to use a MOSFET to drive 60 WS281Bs?

I’m building a custom keyboard and have 60 WS2812Bs as part of the backlighting system. I’m worried about the signal integrity as I’m using an STM32 and the max current on that pin is 25mA. Do I need ...
user avatar
2 votes
3 answers
3k views

Individual WS2812B circuit: Do i need a capacitor?: Power distribution?

I am currently designing a Circuit that is similar to typical WS2812B ARGB strips but seperatet into modules. In the offical datasheet, there is no mention of using capacitors as noise protection, but ...
user avatar
  • 47
0 votes
1 answer
134 views

Controlling WS2818B matrix with ATTiny85

I am working on a small LED board project. The LED board is a 16x16 panel of WS2818B LEDs; they are also known as Neopixels. Controlling these thing is a bit of a pain, and I thought I would look ...
user avatar
0 votes
1 answer
65 views

12V AC to 12V DC converter to power an Arduino and some WS2812B 5050 LEDs

I am looking to convert 12V AC to 12V DC to power an Arduino through the VIN pin. The Arduino will be mounted on a PCB through header pins, please see below. This is the board I have at the moment. I ...
user avatar
0 votes
0 answers
58 views

Keep an Arduino Nano and 24 WS2812Bs alive if the power drops for a second

Im working on a project for a pinball machine, working on a arduino controller and beacon boards to replace old filament flashers, The supply voltage to the new arduino controller and beacon board ...
user avatar
0 votes
1 answer
370 views

Can't get WS2812B LED strip working with PC power supply

I am an absolute beginner in both electronics and LEDs. I would like to power my WS2812B LED strip (5m, 300 LEDs) with an old PC power supply. The power supply has 600W so more than enough power. To ...
user avatar
  • 103
0 votes
1 answer
39 views

How to select the correct CM choke?

Say I want to reduce noise on the data line for WS2812B led strips. Is it a viable option to use CM chokes to reduce this noise? According to the docs, WS2812B data speed is 800Kbs. Which I guess ...
user avatar
1 vote
1 answer
188 views

Can I use a ferrite bead instead of a resistor on the data wire of my LED strip?

I have a WS2812B[PDF] LED strip which I want to control with the PWM0 pin (GPIO18) of my Raspberry Pi. Multiple sources highly recommend to insert a 330-470𝛀 resistor in between the data pin of the ...
user avatar
  • 288
0 votes
2 answers
147 views

How individual LEDs in LED strips (or matrixes or cubes) are being powered when supplied with >=12V instead of 5V?

I've been wondering about LED strips and how its individual LEDs are being powered. My knowledge about LEDs is very basic. I know they're diodes, I know they tend to draw more current than what's good ...
user avatar
  • 3
2 votes
2 answers
1k views

How do I safely power 2 m 144 LEDs/m WS2812B strip with 5 V and 10 A?

I am using a 2 meter strip with 144 LEDs/m on a WS2812B LED strip. By doing the maths on how much current would be required to power this we get: 60 mA * 288 = 17.28 A. However, I am not planning on ...
user avatar
  • 21
0 votes
1 answer
169 views

How does a ws2812b chip work?

I know what a ws2812b chip does, but how does it work internally? How can it control the led? Is there a datasheet that goes into detail?
user avatar
1 vote
1 answer
54 views

Adding more LEDs in the strip causes white to become red-ish

I have an LED strip with 62 LEDs. The type of the LEDs is WS2812B. I am powering them with a 5V 10A switching power supply. When I set the LEDs to white and full brightness, they look a bit red-ish. I ...
user avatar
1 vote
0 answers
51 views

WS2812 Strip Connector

I'm trying to buy connectors for WS2812b LED strips. I have already found the item on eBay, but cannot find it on Digikey as Digikey has a gazillion of connectors. The connector I am looking for looks ...
user avatar
3 votes
1 answer
206 views

Soldering WS2812B Daisy-Chain

I'm following this project. More specific Step 7: Rainbow Pistil https://www.instructables.com/Ever-Blooming-Mechanical-Tulip/ In the picture bellow. On the top left corner is how I should solder ...
user avatar
  • 227
0 votes
0 answers
108 views

WS2812B LED strip interference with PC monitor

As post title says I think I have an interference issue between a WS2812B LED strip (98 LEDs) and my PC monitor Viewsonic VX2458. The LEDs are connected to the back of monitor in a rectangular shape ...
user avatar
2 votes
1 answer
715 views

Why does color of addressable RGB LED strip change when dimming?

TL;DR I have an addressable LED strip with TM1814 IC's. (So it's actually a RGBW strip. Download datasheet here.) When set to orange at full brightness, it's orange. But when set to orange at 10%, it ...
user avatar
0 votes
1 answer
124 views

Can I use a single large capacitor rather than multiple small?

I'm designing a PCB to hold an array of WS2812B LEDs. The LEDs are in groups of 4, with roughly 1cm gap between them, 60 total LEDs per PCB. As per the documentation recommends I add a 0.1uF ...
user avatar
  • 283
1 vote
0 answers
76 views

ESP32 Neopixel acting strange when using dual core functionality

I have just started using ESP32 and tested dual core functionality, which works fine i.e. can blink two leds with different blink intervals parallelly. Also I've tested touch sensors, they also works ...
user avatar
  • 143
0 votes
0 answers
83 views

ESP32 Dev Kit C - WS2812

My Components: ESP32 Dev Kit C from Az - Delivery Power Adapter 5V - 5A Level Shifter RGB - STRIP I'm using the Adafruit_neoPixel library. My programs are working fine with the LED-Strip, but every ...
user avatar
0 votes
1 answer
40 views

One button circuit with thyristor, controling power suply

Please forgive my lack of knowlige. I need to make circuit with one button(normaly OFF, ON while pressing) using thyristor. This circuit will be connecting and disconnecting raspberry pi and bunch of ...
user avatar
1 vote
1 answer
481 views

WS2812B strip glitches or flickers. What's the cause?

I've rebuilt the Project Piano LED Visualizer but I'm experiencing some issues with the LED strip that I don't understand. I'm using a 10A/5V power supply to power a strip of precisely 180 WS2812B ...
user avatar
  • 161
0 votes
0 answers
942 views

Neopixel WS2812B signal noise

I made a stair led with 610 leds. All powered with a ATX psu. The PSU can`t deliver the 5v for the led stripe so im using for 300 of them a buck driver and for the rest the 5v ATX out. The Buck is ...
user avatar
  • 101
0 votes
5 answers
379 views

Cheap Reliable way to convert 3.3V to 5V with a 800kHz signal

I'm looking for a cheap reliable way (production) to convert an stm32's 3.3V output to the 5V input of a WS2812. I looked at a MOSFET solution with a BSS138 but internet research shows that it is not ...
user avatar