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2010-11-14
, 13:35
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Posts: 2,802 |
Thanked: 4,491 times |
Joined on Nov 2007
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#2
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2010-11-14
, 14:43
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Posts: 284 |
Thanked: 498 times |
Joined on Jun 2009
@ Poland
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#3
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2010-11-14
, 15:35
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Posts: 2,802 |
Thanked: 4,491 times |
Joined on Nov 2007
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#4
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My Mio P550 Windows Mobile 5 device with a lock on 8-10 satellites is accurate to within one meter judging from the last rally, the GPS position didn't float at all during a complete standstill. Unfortunately that device got destroyed during the rally, otherwise I wouldn't be asking for such an app for Maemo.
Are you saying the GPS in my N900 is worse?
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2010-11-14
, 15:55
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Posts: 284 |
Thanked: 498 times |
Joined on Jun 2009
@ Poland
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#5
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The name of the app would be "Itinerer Support" or something like that.
What it needs is a simple GPS distance indicator, which displays the overall distance at the top (small font), and a single "checkpoint" distance at the bottom (massive font). Accuracy of both should be to within one meter.
The single checkpoint distance should be reset to zero meters whenever I tap its display (so it starts counting from zero immediately - sometimes the distance between checkpoints is 50 meters, so any delay would cause issues). There needs to be haptic feedback that confirms the action. Tapping the large checkpoint distance display is essential, a small button is really easy to miss during a rally. There should be no confirmation dialogue.
The small overall distance indicator is not interactive, but it would be nice to have the standard main menu item to reset the overall distance, which resets both counters and requires confirmation. Overall distance is just that - overall distance, resetting checkpoint distance doesn't affect it, it just measures the distance from the last global reset.
There should be a "Tap to START!" button in the place of the checkpoint distance when you start the app and whenever you reset the overall distance using the main menu. This is useful, because I have to wait for the GPS fix before starting to measure the distance and the GPS position is sometimes "floating" - at a complete standstill I would already get fake distance, so this would alleviate the issue at least at the very beginning of the rally.
Additionaly, there could be a timer, indicating the time from the last overall reset (not checkpoint reset), next to the overall distance indicator.
For extra points there could be a nice large green icon (just a rectangle, nothing fancy) to indicate "detailed" GPS lock, orange for "coarse" GPS lock and red for no lock, between the counters, somewhere in the middle.
Future development ideas:
- Add switching between Imperial and Metric units via the main menu
- Add "Pause/Continue" functionality via the main menu
- Current speed, Maximum speed, Average speed indicators via separate menu
- Black box-like recording of forces working on the car using the accelerometer (something like AccDisplay?)
- Add "End Event" functionality via the main menu to reset and record the time, distance, avg. speed, max. speed, forces to a file/graph/html file.
- Speed limit setup with audible warning
- Side and front/back vehicle tilt setup (accelerometer) with audible warning during crawling speed so as not to tip the vehicle over.
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Last edited by Tomaszd; 2010-11-14 at 18:58.