Thomas Gonnot has published a RGB LED Strip Controller based on STM32F0 microcontroller. The controller is able to power NeoPixel and DotStar protocol RGB LEDs.
A simple controller for a RGB LED strip, with independent control of color and intensity.
The design is based on a simple STM32F0 microcontroller. It can handle NeoPixel and DotStar protocols, and the power supply can vary from 5V to 15V.
Firmware available at https://github.com/fearedspark/RGB_LED_Strip_Controller
OSH park permalink: https://oshpark.com/shared_projects/Fg2xQq0t
RGB LED Strip Controller – [Link]