How to use WS2812 “NeoPixel” LEDs with a PIC microcontroller 

If you're new to PIC microcontrollers and want to learn some more of the basics then check out my PIC introduction video :) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-e4Q2dYVedPY.html

your explanation is better than others in my native language ) Thank u ☺

You are brilliant in the art of teaching! Please keep the amazing work you are doing! Long life to PICs all over the world! 🙂

Excellent. I've always wondered how this was done. Good explanation! Hopefully I'll get around to working with these types of LEDs once day.

Excellent video, thank you! I'll be trying this with my 12 years old son. hope you don't mind the questions coming ahead!

That explains a lot about how the WS2812s work. I also like the frequency checking solution. Thanks Jens

Nice, never saw your channel in the past years (developing Arduino and ESP), but this is gold! Really nicely explained, i can skip parts i'm familiar with and the the PIC integration (watched the whole video nevertheless :D).

Hi Jens, I am not quite sure if you'll get my comment, but wanted to say I've joined this thread a bit late. I've build the circuit you illustrated and I was able to get it compiled, flashed and running right out of the box. It's working great! I've connected it to a 4.5Vdc Bench Supply and have been running it 24/7 the past 3 weeks. It hasn't skipped a beat. So, I'm ready to add that Adafruit 8 LED strip to the circuit as depicted in the video (11:09), however, I'm a bit at a loss as to how this strip is wired to the breadboard and existing WS2812B Breakout boards. The pins for the strip is GND/Din/5Vdc/GND. But the WS2812B break board (output side) is 5Vdc/Dout/GND. Your wiring on the bread board doesn't quite make sense. How are you accomplishing this, or did I get the wrong Adafruit WS2812B strip? Thanks!!

Amazing Thank you

A great explanation, one of the best I have seen. I notice at 3:35 you say that the protocol resets... and the data sheets refer to the long pulse >50us as a reset. This is partially true, but it is also a "load" to output command. Once the 24 bit data is stored on the first LED's internal controller it switches through its DI pin to the DO pin to the next LED's DI pin and so on through all the LEDs. It is only when the "Load" pulse of >50uS does the LED internal controller switch the received bits to drive the LEDs. (via internal drive circuits). The >50uS pulse also resets the serial drive chain. You can observe this on long chains of LEDs loaded with say the same colour notice the LEDs only change after all the serial data has been passed through the LEDs and the >50us pulse is sent the LEDs will change. Another thing to keep in mind is that there is no need to continuously update the LEDs. My latest code updates my 16 WS2812 LEDs once every 16 mS thus the load and reset pulse is 16mS long. (Held low at end of load sequence, until next 16mS interrupt). This leaves plenty of processor time to deal with all the other code handling I require. I have also tried 30 second updates with no problems, you only need to update the LED string when required, something that seems to be missing from some coding I have seen.

Thanks, Really helpful.. Kindly explain the PWM, timer and working of registers in microcontroller...

Very, very, very, gooooood!

Great Video!! @FriendlyWire I have multiple strings of WS2812B leds that the last led has a chopped data out pin, I was wanting to know if its possible to use an pic chip to receive the data from the WS2812b controller (that thinks the sting has 300 leds) and skip X number of leds and send the rest of the data out from that point. Allowing me to make up multiple strings using the same effect but without duplicating strings.

Hey, thanks for the video. Would be really awesome if you had a discord server for the channel where beginners like me could discuss with others.

Hi! Great video. Can i use an Atmel 24c64 for controling this led too?

New Question regarding the code. There are two variables in the code that I'm attempting to understand. unsigned char brt = 1; unsigned char dir = 1;

Excellent content with high learning value. For my level of understanding (and age, maybe) you speak a little bit too fast. Looking forward to your next tutorial!

It is a Good video but maybe a video with mcc would be useful for various pics

Thanks for the video. i have a question .sendRGB(0,0,brt) what does it mean exactly? is it for a single led ,right? you have 11 sendRGB(0,0,brt) function in if condition ,that means you have 11 led,right? and another question let 's say brt=255 does it mean the color of led is brightest blue? so brt decreases means blue brightness decreases ,right?

Very nice, Is it possible 20mz pic16f72 To run ws2812.or ws2811.

Love your PIC series, really takes me back to our PIC16-on-everything days. From some PIC16F1503 firmware circa 2016: ``` for(pixel = REG_WS2812; pixel < NUM_ELEMENTS+REG_WS2812; pixel++){ for(j = 0b10000000; j != 0; j>>=1){ if(_i2c_slave_get_regs(pixel) & j){ LATAbits.LATA4 = 1; LATAbits.LATA4 = 1; LATAbits.LATA4 = 0; } else { LATAbits.LATA4 = 1; LATAbits.LATA4 = 0; } } } ``` I don't quite recall how I got away with such brazen disregard for timing, but I think it just worked out. The code is interleaved with servo updates using a state-machine in an ISR, while the main loop handles I2C comms. It's a wonder what you can get working on these things.

can you control argb led strib ?

What have you got lined up for your next lesson?

how to build green blinky thing on lower left below scope?

I want to source code

Dang!!! Why not just simply use an arduino?