Status - Sold out, deprecated
PWM (2/3/4 pin) Fan regulator
USB-C
Comparator circuit based (Astable oscillator)
3D printed case avaliable
43.5 x 27 x 14 mm
(Note: You need to provide your own 5V fan & USB powerbank)
Potentiometer handle too long
Tuning of PWM duty characteristic (linear -> nonlinear)
Choice of 2/3 to 4 pin fan switch