Arduino-like sensors

Hi,

I'm building a simple controller based on Arduino to control automatically the radiators fan of my liquid refrigeration based on ambient and water temperature.

I have several data that could be nice to show on HWINFO like: ambient temp, water temp, fans PWM, current fans RPM, etc.

The communication between arduino and PC is using a COM port, maybe you could develop some kind of protocol to show "external" or "custom" sensors.

Then, anyone could "attach" a new device to monitor (like the remote machine sensors) but using a COM port or even an IPort.

What do you think?