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Show HN: My GPU Fan Saga – A DIY ATX Fan Controller
Having a problem-solving mindset is incredibly valuable and rewarding, especially when it leads to exciting DIY adventures. My latest experience with a noisy GPU fan turned into just such an opportunity. It guided me through fascinating explorations involving ATX power, MOSFET motor drivers, Pulse Width Modulation (PWM), ATTiny85's bit-banged 1-wire …
It guided me through fascinating explorations involving ATX power, MOSFET motor drivers, Pulse Width Modulation (PWM), ATTiny85's bit-banged 1-wire bus, and a DS18B20 temperature sensor. Plenty of excellent tutorials cover the nuances of interfacing with DS18B20, so I’ll leave the detailed exploration of the protocol as an exercise for interested readers. With the introduction of temperature-based PWM control ( Solution Part 2 & 3), idle temperatures settled around 40 °C, with peaks near 60 °C under sustained heavy load, well within safe operating limits.
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