Q Light Controller+

I have a string of addressable leds I'd like to program with qlc

Logically speaking you would think there would be a cheap USB interface to do this as there is with dmx but so far I haven't found one, just microcontrollers for them powered by USB


Has anyone found anything?

Since this is a hardware related question, I'll redirect you to https://www.facebook.com/groups/584412254990472
That FB group is devoted to pixel mapping hardware.
Most DIY led-pixel projects are based on the ESP32 platform and use Artnet to communicate.

I do not know what your definition of low cost is but I use this https://pixelcontroller.com/store/produ ... f16v4.html and it is worth every penny.