Monitor a computer by connecting an Arduino to the motherboard.
My goal here was to see what I can monitor without installing any software on the computer, but just using connections to the motherboard.
Watch my YouTube video presenting how this project works: https://www.youtube.com/watch?v=_jJMjwHiZSc
More specifically, my program monitors:
- CPU Fan requested speed in % of maximum speed
- CPU Fan actual speed in RPM
- HDD usage % (+ displays a filled square that mimicks the HDD LED)
- Temperature (not connected to the motherboard, just uses a temperature sensor)
Overview during development (outside computer):
Final result:
Circuit schematic:
I used an Arduino Leonardo, but I don't use any Leonardo-specific features so an Arduino Uno could be used instead for example.