2 layers24.6 × 11.1 mm

PWM+fan stop
yvoronkin/FANSTOP
In a small form factor, an extension of the fan control is implemented.
24 parts2CERN-OHL-S-2.0
KiCad boards from 1 GitHub repository tagged “avr-asm”, the most starred first; open any of them in PCBKit.

yvoronkin/FANSTOP
In a small form factor, an extension of the fan control is implemented.