Documentation on how to use the WebUSB DMX512 controller on Linux

[TimPietrusky]

When you want to use the controller on Linux, you have to add a custom udev rule in order to give the browser permission to use the USB device.

@lezsakdomi can you please post the udev rules you added in the workshop?

During the workshop we tried the stuff that was written in webusb/arduino#29, but I'm not sure anymore which steps exactly we took and what helped in the end.

Also take a look at https://web.dev/usb/#tips

[TimPietrusky]

The steps are:

# Create a file for the Arduino-access rights
sudo nano /etc/udev/rules.d/50-arduino.rules

# With this content
SUBSYSTEM=="usb", ATTR{idVendor}=="2341", MODE="0664", GROUP="plugdev"

# Check if your user is part of the plugdev group
groups <username>

Then reconnect your device!

Note: Instead of 2341 for the idVendor, it could be a different one depending on the Arduino you are using. A list of supported devices can be found https://github.com/NERDDISCO/webusb-dmx512-controller/blob/master/controller.js#L27-L38

You can check your device in Chrome via chrome://device-log