This project is a compact USB-to-PWM fan controller based on the ATtiny85, built for GPU passthrough setups where the host cannot read GPU sensors. A VM reads GPU temperature and drives the fan via a USB CDC serial interface, enabling simple external temperature control.
This is a simulation of the Founders Edition 5090 Nvidia GPU:
Implements alternating fluid-solid strategy for orders of Magnitude speedup in Electronics Cooling CFD simulations
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