Two university students: Vasileios Georgitzikis and Pierros Papadeas, spent yesterday in the Hackerspace Playground and Arduino. Their goal: create an Arduino xbee open web powered bicycle. The night before they worked on their script. Then, they refined it by creating the device and testing speeds without a bike until about 3:30pm.
How it works
What they built was an Arduino wireless transmitter and a hall effect sensor on the wheel of a bicycle.
This calculates speed and then broadcasts this wirelessly. The receiver module connects to a usb.
Every bike broadcasts and id and speed. The script reads and visualizes using Html 5.
The Arduino demo at the hackbus: