EmbDev.net

Forum: µC & Digital Electronics LED controlling protocol like WS2812 for more colors


von Shum1962 (Guest)


Rate this post
0 useful
not useful
Hello,

I need a LED strip where I can control the LEDs individually, but also 
have more than 3 color channels like with e.g. WS2812 or the 4 with 
SK6812.

I would like to control at least 5 channels (RGB + warm white + cold 
white) but in the best case I would want a protocol that can control 
even more channels (RGB + warm white + cold white + amber + lime + deep 
blue + ...).

Is there already some protocol that has the ability to do that or what 
would be the easiest/best way to do that?

von MaWin (Guest)


Rate this post
0 useful
not useful
You could just use the chip inside those Neopixels and connect like two 
or three of them per lamp, giving you 6 or 9 channels.

The protocol of any RGB lamp just transfers (usually 8-bit) brightness 
values, not a color, so youc ould connect any lamp you like.

von Shum1962 (Guest)


Rate this post
0 useful
not useful
Hey,
yes, but are there LED strips that have that functionality?

I would want to just have a reel like a normal LED strip, but have more 
control channels for more colors.

von MaWin (Guest)


Rate this post
0 useful
not useful
I'd say no.
There are RGBW LEDs with one white, and there are Strips with those.
Then you find Strips with CW and WW LEDs, but those lack RGB.
I've never seen strips with those weird colors you want, even normal 
LEDs are hard to get, so you may not even find lamps with that mixture.


Commercially available RGB/CW/WW lamps have separate LEDs for RGB, C and 
W, and i guess there's a reason for this... ;)

von Chris K (Guest)


Rate this post
0 useful
not useful
There is the ws2811 led driver chip. You can attach any led you like and 
cascade as many as you need. Otherwise I see no other solution beside a 
discrete build. Take a small microcontroller and an led driver like the 
tlc59116 and create your own protocol.

Reply

Entering an e-mail address is optional. If you want to receive reply notifications by e-mail, please log in.

Rules — please read before posting

  • Post long source code as attachment, not in the text
  • Posting advertisements is forbidden.

Formatting options

  • [c]C code[/c]
  • [avrasm]AVR assembler code[/avrasm]
  • [code]code in other languages, ASCII drawings[/code]
  • [math]formula (LaTeX syntax)[/math]




Bild automatisch verkleinern, falls nötig