RSSVeloAce - Open source Palm based bike computer
Here's an open source bike computer using an old Palm...
Bike Computer System for Palm OS. Provides detailed data views, logging to database, trip data estimation, trainer with Top 10 laps, graphical speedometer. Supports km/h and mph units. The wheel sensor is simply connected over RS232 or even IrDA.SourceForge.net: VeloAce - Link.
Posted by Phillip Torrone |
Jul 5, 2007 02:00 PM
Bicycles, DIY Projects, Gadgets |
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Comments
Oldest comments listed first.
| Posted by: Emrikol on July 5, 2007 at 2:57 PM |
Well, I just went to eBay to get a Palm III! This is gonna be fun!
Thanks Phil!
| Posted by: cyrano_de_bergerac on July 5, 2007 at 9:04 PM |
What exactly is this wheel sensor (listed in the project) and where can I lay my hands on one?
| Posted by: evilad on July 6, 2007 at 12:30 PM |
I don't know about this project, but if it is the same as commercial cycle computers then it will be a reed switch attached to one of the forks and a magnet attached to the spokes. You can find them in most electronics shops.
| Posted by: Emrikol on July 6, 2007 at 12:55 PM |
I believe that it's a custom made sensor. From what I can tell it uses some sort of mechanical switch to work. I think I might have to make one a bit better with a hall effect device. Solid State FTW!
| Posted by: PLC.Doctor on July 6, 2007 at 9:07 PM |
The wheel sensor itself is a common reed switch and the schematic is available here:
http://veloace.sourceforge.net/vaif/vaif.pdf
| Posted by: Mordaz on August 3, 2007 at 9:22 PM |
Very nice. What about provision for an extra sensor, for cadence measurements?
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