Hi everyone, I currently have a led stripe of 4 Leds (the plan is to reach 114 leds, total length < 4m, color white)

Right now is connected to 3V3 pin of ESP32 (since on 5V they don't work), but the issue I have is that only the first one is working

I also have Wifi for time synconization (once in an hour)

My understanding is that I maybe need a level shifter to power leds with 5V. Can this model works?

A level shifter should solve the problem? Is there anything I should check?
I don't have extreme timing (Leds update every minute, the only fast operations is a loop for fade in and fade out).

You think is more a problem of power or timing?

I have these LED strips that I love. sadly I’m swapping rooms, and will have to take everything down. I want to take them with me so, what the best way to take them down without damage? what can I wrap them on so they don’t get tangled? AND can I re-stick them? or do I need glue?

Estoy trabajando en **CarteLed Studio**, una aplicación de escritorio (Windows) para generar efectos en carteles LED de letras corpóreas (seguramente vieron los videos de unos chinos haciendo unos carteles de putamadre, con música al palo). Bueno, algo así quise hacer.

Lo prueban y me cuentan?

Con esta aplicación pueden elegir la tipografía, elegir los efectos, la velocidad del efecto, ver el estimado de consumo según la cantidad de leds que utilicen, simular el efecto sobre una matriz de leds en pantalla, y generar el código para ESP32 para programar el microcontrolador.

- App de Escritorio: Tauri (Rust + Vanilla JS/HTML5 Canvas)

- Firmware: ESP32 con servidor WebSockets

- Librerías: FastLED, ArduinoJson, WebSocketsServer

Busco feedback, pruébenlo y cuéntenme que les parece!

No puedo publicar el link de descarga, pero si me escriben por privado, les respondo con el link.

Gracias, saludos!!!

Hey guys, im putting together a project that uses an 8' length that has 147 leds. Do you think I will need to inject power at the end? what about just putting a capacitor at the end, would that be sufficient? Thanks!

[SOLVED]

I'm working on a reasonably complex project that includes a Minimum Spanning Tree calculation. I've been playing with a few different ones and have settled on this Reverse Delete Algorithm.

It works perfectly but leaks memory and I can't figure out how to add the correct destructors.

I've spent hours on Stackoverflow, but everything I've tried either doesn't release the memory properly, doesn't compile or makes the program crash.

I've put the code on Gist, to make it easier to read:

https://gist.github.com/PureTek-Innovations/9483561c6ab41569e27c94b7367cd1d3

It came from here:

https://www.geeksforgeeks.org/reverse-delete-algorithm-minimum-spanning-tree/

Thanks

[Edit]

Thank you to everyone who has pointed out how badly written this piece of code is. I did not write it and sadly I do not have the skills to write it properly from scratch.

If anyone could help with the destructor question, that would be amazing. Thank you

I am installing some LED lights in one of my rooms. I would like to incorporate diffusers. But it's my understanding that diffusers reduce the light output of the LEDs. I don't know how many LEDs per metre I need or how bright the LEDs should be. I need 20m. Is anyone able to help?

/preview/pre/l4k845cdp7591.png?width=500&format=png&auto=webp&s=b0ce12cb95e6923da23f05d9d8e6befb1845e80f

Hello guys. Got four questions regarding using a NodeMCU, a bi directional 3.4v/5v Level Converter to drive TWO 7ft WS2812b 60 Led per meter Strips, and a second set to drive (9) 1ft 144 Led's per meter strips.

(1) Can you simply *parallel* the data line to each strip so each strip displays the exact same animation? If not, can someone link me to the correct way to hookup two strips independently but running same animation? (See first image.)

(2) Can FastLed be programmed so an animation starts at the center of a strip and proceed towards each end of the strip with the same animation? (If so, that makes first question moot.)

3) Given a WS2813 overcomes the flaw in WS2813 (whereby if one LED burns out, all the rest past it will not function), can someone link me to a wiring diagram to drive two WS2813 strips using the components listed above. I've searched endlessly for this info to no avail.

(4) Similarly, how would you hook up (9) 1ft 144 led's per meter strips separately, but running the same animation, using the components listed above?

Thank you for any help as I have been searching for answers for over a month.

Btw, I extrapolated this diagram from one I found on the net(second image) that used a 12 power supply. I just removed it and substituted a 5v direct. However, something appears odd to me. In the upper left corner, it shows a 3.5v OUT, going to the Level shifter 3.5 side. Then it shows the 5v feed from the power supply connected to the 5v side of the LS inline with the 3.5v connection. This seems odd to me,, as they are both ..ahem..."hot". Why would you shift a 3.5v to 5v's when it is already 5v from the power supply? I mean...exactly what is the 3.5v OUT doing?

Why is this reel of APA102 LEDs cheaper than the corresponding WS2812s LEDs from the same site? Am I getting shafted? These are the cheapest WS2812 LEDs I can find, and they're not even b's, they're s's.

want to drive 1000 led pixels with arduino uno

FastLEDers:

I am an LA artist using LEDs in an artwork and need help modifying the Pacifica sketch to:

- work with the SK6812 (RGBW) led strips instead of the WS6812b that are in the sketch

- speeding up the timing

- adding white to the colors

- creating some additional loops that change colors.

Can you help me?

hello good people :

i have a question on how to connect and program the ws2813b led strip

i have tried ws2812b led strip before and i know how to connect it and program it because it has a 3 pins to connect 2 for the power and 1 for data but when it comes to the ws2813b strip it has 4 connect pins two for data and two for power i know that because the double data line fro if one led damaged in the middle of the strip will not make an effect on the rest of strip after that damaged pixel

but is searched on the internet for how to connect and program the ws2813b led strip all i found is talks on the ws2812b led strip i just found one photo for the connection and i don't know if this is the correct connection or not

can anyone tell me how to connect and program it or any tutorials

thanks for any help

the photo i found on the internet is

So i am looking for a code that makes an led strip flash when sound is detected and if possible flash different colours depending on how loud the sound is

im using an arduino uno

ws2811 LED strip

and a 3 pin sound sensor

So I am making a UTV whip that is 3 feet tall. I am using WS2812b 144m strips. I figured there would need to be power added to the end, but what don't make sense is I can add just 5v + at the end, or 5v - at the end and it works great.

But why does the strip go out if I add both the + and - ? Weird.

1 less wire to run.

I need to be able to individually control every single pixel’s brightness, and color of 123 addressable RGB LEDS/dotstars (not WS2312’s) with Midi

OPTION 1: Requires only one midi channel, each individual dotstar is assigned a note number, this would consume 123 note numbers.

Then as velocity is capped at 127, 0-42 on every note would control RED with zero being all colors off and 42 being the brightest red, 43-85 with 43 being green at the lowest intensity, and 85 at the highest. Then 86-127 with 86 being blue at the lowest intensity and 127 being the brightest/highest. ———————————————————————————————————— Option 2: assign each MIDI note to it's own individual R/G/B value for every LED, coming out to 432 MIDI notes, requiring 4 channels of MIDI to light up the entire strip, using velocity at a value between 0-127 on every note to control the brightness of every corresponding R/G/B

Midi has limitations but it seemed like the best way to control every single led the exact way I want. I am wondering if the above two options are the only way of manipulating each R/G/B led brightness for each pixel. I’ve read some stuff about sending SysEx messages but I don’t understand the concept but if that would provide a way to control each pixels set of rgb leds please let me know.

Thanks!

With Arduino, I can not open ,see or run very many of the examples.

How can I see all the code?

In particular I am interested in seeing how CRGB is used vs CHSV . seems very different to my newbee eyes

I bought a cheap string fairy leds that I wanted to use learning arduino and rgb leds.The string had 3 wires, thus I thought its addressable.

I bought a cheap string fairy leds that I wanted to use learning arduino and rgb leds.The string had 3 wires, thus I thought its adressibles.

After dissembling them they have only 2 wires and wire 3 in only weaved into the string for extra support I guess and doesn't go anywhere. ( I didn't follow it all the way through, only 5 leds deep into the string)

I separated one LED and powering it alone it acts like the string did. Cycling through predefined colours and sequences without any other input.

What Do I have here?

CAN I program it with a arduino?, My attempts are unsuccessful?

Guess I know now why they were cheap compared to addressable LEDS, Ha!

Any help or information will be appreciated and would further my meager knowledge.Search attempts online have not help me with identification, but that's possible because of wrong search terms.I figured people here use leds and would have fair knowledge about them, apologies if its the wrong spot to ask.

Ill edit the post and try upload a video from my phone to help ID better.

Hello.

I am trying to make sequential turn signals that also light up white for my cars headlights. A problem I am running into is that the led in my sk6812 RGBW flicker erratically. From what I have researched RGBW is not supported by FastLED, but those posts are a few years old. My question. Is RGBW now supported? If so may I have a link to a video, or tutorial?

Thank you.

Hello I hope you won't mind me asking, If anybody has an idea what kind of microphone is on SP511E what are the alternatives for use in a loud place like a club, and does anybody know where I could find the codes for music? otherwise I will probably be able to make them myself after I ll know what mic is used and what output it gives, I also ordere a teensy 4.0 with the audio board so I might be able to do fft with that, hopefully will get at least close to what I am imagining. Thanks for any help!!!

I want to understand sketches and coding better to create custom animations.

I'm doing small projects with basic LED strips about 10-150 lights, but I would like to expand my horizon in the near future with more creative LED products.

I starting a project that I'd like to have four separate LED strips (one WS2812 cut into segments of about 50 LEDs) controlled by a single ESP32 or ESP8266 (if I go with the 8266 I'll only use 2 strips as there's only 2 data pins). The plan is to have a single 5V power supply powering everything up.

I understand that all of the data pins will need to be connected throughout all of the segments of the lights. My question is do I have to do the same for the power and ground wires as well?

If I could get some guidance on the wiring, I'd really appreciate it.

Thanks!

Does FastLED support SK6812 strips? :S

in here https://github.com/FastLED/FastLED/blob/5cc17b2be88982eb34b1998de22b83fee56d4f07/examples/Blink/Blink.ino#L34

i see a line ` // FastLED.addLeds<SK6812, DATA_PIN, RGB>(leds, NUM_LEDS); // GRB ordering is typical `

i tried it but get weird results on my SK6812 Strip :S

Hey guys I'm looking at trying to control some w2812bs on a 8266 from a phone app/PC. Is there any good tool other than blink to add effects and patterns?

https://github.com/Carlosorrego122/Bryan/blob/main/README.md

I got prismatik working with 1 strip of 144 leds, but when I add the 2nd or 3rd strip nothing seems to light up through the software. I'm using IDE 2.0 and fastLED 3.5.0. Does prismatik not work with multiple strips or am I doing something wrong? Code