Interface

All the topics related to QLC+ on the Raspberry Pi
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Hoize
Posts: 11
Joined: Sun Jan 05, 2020 4:19 pm
Real Name: Elias

I have a fresh install of QLC+ on my raspberry. Now i had the Idea if it is possible to use the raspberrys gpio Pins to create a dmx Signal (diy Interface). has somebody an idea How to do this? Or is there a Function implemented in QLC+ That creates a Interface with the gpio Pins ?

Sorry for my bad englisch.
Thanks
Elias
lighthacker2020
Posts: 42
Joined: Mon Jan 06, 2020 2:40 am
Real Name: Mr Mike

My guess is that you'll have better success tapping in to the pi's SPI bus vs. driving the gpios directly. I haven't seen anything in the app that would indicate sending output direct to gpios would be possible, however, I have seen posts in this forum about using the gpios assigned to the SPI bus use as an output, after doing a bit of configuration work for the pi. I believe there's even rpi and arduino hats available for this.

To use the gpio pins directly, you'd have to have a driver which is capable of outputting the DMX values over something with looks like RS485 signaling going through the gpio pins (3 required, ground, signal+ and signal-). I don't think QLC+ has that built in ... I didn't try to fight it, and just dropped the few buck to buy a USB DMX interface, which fit my budget :) Although I was attracted to the hacker-y aspect of using something via gpio for a while
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mcallegari
Posts: 4807
Joined: Sun Apr 12, 2015 9:09 am
Location: Italy
Real Name: Massimo Callegari
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QLC+ on the raspberry pi has a native GPIO plugin but it's just to perform basic IO.
DMX using GPIOs is not supported and I suggest to use the RPi UART instead.
pgScorpio
Posts: 29
Joined: Sun Dec 15, 2019 5:24 pm
Real Name: Peter Goderie

DMX out using the hardware serial on rpi is available.
Also artnet and ola using this DMX out is available, so it should interface with qlc too.

As a starting point see https://www.instructables.com/id/How-to ... pberry-Pi/ for the basics and other links.

Never used it myself, but others did...
:geek: Software is the stuff that makes Hardware flexible ! :lol:
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