INTEGRATED THERMOMETER MOD

The only temperature sensor on the Eee PC is the integrated Intel CPU thermal sensor. While it can measure the processor temperature with great accuracy, there is no sensor to measure the ambient air inside the case.

I found a small TEMPer v1 USB thermometer on Ebay (or USBFever) that could do the job.

The box and software was in both Chinese and English. The build quality of the PCB and soldering was below standard.

The only free space I could find for the thermometer was between the two USB hubs, with the protruding crystal facing down. The power, ground, and data signals were of course USB pinout standard, just reverse since the board facing down.

Windows XP did not automatically find a driver, but the included mini-CD included a USB-SERIAL driver install application that worked fine and added a new COM-port. There was also a monitoring program (with source code) included to view and sample the temperature every second. Note: It does the fahrenheit conversion wrong [23].

Fortunately, Björn Böttcher has created a wonderful new application called UTAC (USB TEMPer Advanced Control) that inferfaces with the TEMPer and offers proper fahrenheit reporting, graph plotting, outputting to csv or text file, ftp upload, and url reporting to a webserver.

• Download TEMPer v2007 software
• Download UTAC software (mirror)
• Use this .NET C# code to interface the TEMPer

Source: http://beta.ivancover.com/wiki/index.php/Eee_PC_Internal_Upgrades