USBTenki is an electronic project to interface sensors to an USB port for collecting weather related data such as temperature. The firmware supports many different sensors and interfaces. It is up to you to decide what your USBTenki will support.
I consider the project useful but i don’t seem to have any practical application around me. i really looked for one, because the project is easy to build and i would of liked to make on, but since i cannot find an application for it, I’m gonna skip it.