Status

• Purchased U3 LabJack and Acer W500 Tablet
• Confirmed that Qt C++ works on the Acer W500 tablet
• Created Qt C++ project SCII that can load the LabJack dll
• Connected to LabJack and can talk to the pins and obtain data
• Created github repository and uploaded code https://github.com/internetscooter/Vespa-Labs
• RPM of wheel measurement added and tested ok
• Tested Qt Embedded Widgets working for a nice interface
• Crude logging enable to test sensor readings
• Implemented Reed Switch Debounce
• Moved to LabJack streaming mode
• Have LabJack U6 (more accurate clock)

TODO

In priority order:

• Better readings
  • Ordered Hall Effect sensor for wheel speed
• Add dyno functions for it to work with Scooterlabs Dyno
  • roller based force calculations
  • graphing (Qwt)
  • O2 sensing (reading 5V signal)
• Better Logging functionality and replay - this will help with UI design and flushing out hardware issues with sensors
• Create top level control interface (requires using custom build Qt Creator)
• Implement UI to allow the user to set and save parameters about their Vespa. These will then be used to provide readouts from the wheel measurement - such as RPM, Km/Hr, Hp etc
  • Vespa measured weight
  • Rider measured weight
  • Wheel circumference
  • Vespa Type (for preconfigured settings)
• Fix any issues: https://github.com/internetscooter/Vespa-Labs/issues

Joining the Project

To join the project drop paul dot mcintosh at internetscooter dot com

LabJack

1 x  U3-HV - ~US$114.00 http://labjack.com/u3

Some links to further info:

3 typical techniques for measuring frequency

Tablet PC

Acer Iconia W500 is the Tablet PC being used and I have successfully got it talking to the LabJack above. The performance is pretty good too and I am able to treat it as notebook pretty much including installing a development environment.

One issue to resolve is that the tablet can't be used with motorcycle gloves without some modification. This should be solved with conductive thread http://www.instructables.com/id/Making-A-Glove-Work-With-A-Touch-Screen/

Sensors

• Cylindrical reed switch,M8 NO 200Vac
• Magnet: Disc Rare Earth Neodymium Magnet N50 8mm x 5mmfor attaching to wheel for triggering reed switch above (they are strong enough to stick to the wheels for years unaided)