CryHam, creator of the Kacey and KC4 Keyboard Controllers, has created the “Fancy” PC fan controller based on the same code.

The device can regulate seven analog or PWM fans, with RPM detection and display, automated fan power adjustment based on DS18B20 temperature sensors, and an ST7735 1.8″ color TFT LCD display to show the GUI and graphs. Code is available on GitHub, and more detail can be found on CryHam’s web site.