Using SPI to Control WS2812b

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ethanm3
Posts: 36
Joined: Mon Dec 28, 2015 2:50 am
Real Name: Ethan Moses

Using SPI to Control WS2812b

Post by ethanm3 » Sun Jul 23, 2017 11:38 pm

Hello!

I purchased a Raspberry Pi in order to control a matrix of WS2812b pixels using QLC+. I am running into some issues right now, and would love some pointers:

1) I downloaded an am running the RPi QLC+ program - in my workspace I go to Inputs/Outputs and the SPI Plugin only says "none" under Devices. and has no options for Output. When I click the Configure icon, or double click SPI, the option is only to control transmission frequency. I How do I enable SPI so that I can control my pixels?

2) Am I limited by DMX universes? What I mean is, since my LED matrix is over 170 pixels it takes up more than one universe - can I still run this line of pixels through just one output, or do I need multiple outputs in order control my lights?

Using RPi 3. Installed QLC+ for RPi version 4.11.0
Matrix is 19 pixels width, 14 pixels height

Thank you!

-Ethan

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mcallegari
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Real Name: Massimo Callegari
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Re: Using SPI to Control WS2812b

Post by mcallegari » Mon Jul 24, 2017 6:38 am


ethanm3
Posts: 36
Joined: Mon Dec 28, 2015 2:50 am
Real Name: Ethan Moses

Re: Using SPI to Control WS2812b

Post by ethanm3 » Wed Jul 26, 2017 12:24 am

I saw this thread, and downloaded that library only my RPi, but I still do not see any options for SPI output on my QLC+ Input/Output screen. Am I missing a piece? Am I able to use QLC or just scripts using this library?

Thank you.

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mcallegari
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Re: Using SPI to Control WS2812b

Post by mcallegari » Fri Jul 28, 2017 6:47 pm

Are you using my image ?
Cause on my RPi 3 I correctly see SPI CS0 as output device.

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