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beyondscreen / node-rpi-ws281x-native

native bindings to drive WS2811 (or WS2812) LED-Controllers on a Raspberry Pi
MIT License
224 stars 101 forks source link

MAX_CHANNELS set to 2? #123

Closed bweis closed 1 month ago

bweis commented 3 years ago

Is there a reason that the maximum number of channels is only 2? I haven't tested it with more yet, figured I should ask before I move forward with testing.

Thanks!

psy0rz commented 3 years ago

Its inherit to this system, 2 is the max. But we're working on an SMI version that can do 8 or 16 channels parallel.

bweis commented 3 years ago

I see. Perhaps you could help me out. Is there an avenue for controlling 4 independent light strips from 4 different GPIO pins on the raspberry pi?

I would love to not have to string all 4 of them together... 😅

psy0rz commented 3 years ago

Yes, the only way is via something called SMI, i'm working on it currently:

https://github.com/psy0rz/rpi-ws281x-smi

westonmiller commented 2 years ago

Yes, the only way is via something called SMI, i'm working on it currently:

https://github.com/psy0rz/rpi-ws281x-smi

I'm trying to add a channel to my Christmas lights setup. Is it possible to just swap out the node-rpi-ws281x-native with the smi version? I'm not seeing much in the readme.

psy0rz commented 2 years ago

Nope its not a drop in repacement.

sorry you have to look in the sources to see how to use it for now.

westonmiller commented 2 years ago

Ok, Thank you. Do you know have to convert an RGB ws2812 signal to a ws2811. I tried just sending it GRB instead, which mostly works, but the blues look more purple. (This is related to the MAX CHANNEL limitation as I'm having to add a different type of strand to the end of a ws2812b strand)?

psy0rz commented 2 years ago

no sorry