Laptop stand air-cooling control system
M1 - switch control M2 - fixed fan power M3 - fan PWM fixed/cycle M4 - fan tach serial M5 - fan PWM potentiometer control M6 - temperature serial M7 - temperature OLED M8 - control temp threshold M9 - control temp PID M10 - LEDs display temp, tach on OLED, more TBD