Now and again we come across an outstanding Arduino-based project - something that is home-made but equivalent or better than any commercially-available product. One fine example of this is the "Scooterputer" by Kurt Schulz. Using an Arduino board he has created a system that features (from his site):
- Battery voltage indicator
- Time and date
- Temperature
- Lean gauge with resettable max L-R indicators
- Current speed
- Resettable max speed indicator
- Odometer
- 2 resettable trip meters
- Latitude and longitude readouts
- Compass heading readout
- GSM/GPRS quad-band cellular module
All of this is displayed on a colour LCD, for example:

Kurt's motivation for building the Scooterputer was originally to track the battery voltage - however "feature-creep" brought this simple idea to quite a complex system:
