forked from FOSS/BangleApps
124 lines
4.4 KiB
Markdown
124 lines
4.4 KiB
Markdown
# Gipy
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Gipy allows you to follow gpx traces on your watch.
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It is mainly meant for bicycling but hiking might be fine.
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It is untested on Banglejs1. If you can try it, you would be welcome.
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This software is not perfect but surprisingly useful.
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## Features
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It provides the following features :
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- display the path with current position from gps
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- detects and buzzes if you leave the path
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- buzzes before sharp turns
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- buzzes before waypoints
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(for example when you need to turn in https://mapstogpx.com/)
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- display instant / average speed
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- display distance to next point
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- display additional data from openstreetmap :
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- water points
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- toilets
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- artwork
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- bakeries
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optionally it can also:
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- try to turn off gps between crossroads to save battery
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## Usage
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### Preparing the file
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You first need to have a trace file in *gpx* format.
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Usually I download from [komoot](https://www.komoot.com/) or I export
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from google maps using [mapstogpx](https://mapstogpx.com/).
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Note that *mapstogpx* has a super nice feature in its advanced settings.
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You can turn on 'next turn info' and be warned by the watch when you need to turn.
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Once you have your gpx file you need to convert it to *gpc* which is my custom file format.
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They are smaller than gpx and reduce the number of computations left to be done on the watch.
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Just click the disk icon and select your gpx file.
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This will request additional information from openstreetmap.
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Your path will be displayed in svg.
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### Starting Gipy
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At start you will have a menu for selecting your trace (if more than one).
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Choose the one you want and you will reach the splash screen where you'll wait for the gps signal.
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Once you have a signal you will reach the main screen:
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On your screen you can see:
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- yourself (the big black dot)
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- the path (the top of the screen is in front of you)
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- on the path, current and next segments are red and other ones are black
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- if needed a projection of yourself on the path (small black dot)
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- points as white dots
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- waypoints as doubled white dots
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- some text on the left (from top to bottom):
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* time to reach start point at current average speed
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* current time
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* time to reach end point at current average speed
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* left distance till end of current segment
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* remaining distance / path length
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* average speed / instant speed
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- interest points from openstreetmap as color dots :
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* red: bakery
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* deep blue: water point
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* cyan: toilets (often doubles as water point)
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* green: artwork
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- a *turn* indicator on the top right when you reach a turning point
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- a *gps* indicator (blinking) on the top right if you lose gps signal
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- a *lost* indicator on the top right if you stray too far away from path
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### Lost
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If you stray away from path we will rescale the display to continue displaying nearby segments and
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display the direction to follow as a black segment.
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Note that while lost, the app will slow down a lot since it will start scanning all possible points to figure out where you
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are. On path it just needed to scan a few points ahead and behind.
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The distance to next point displayed corresponds to the length of the black segment.
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### Settings
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Few settings for now (feel free to suggest me more) :
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- keep gps alive : if turned off, will try to save battery by turning the gps off on long segments
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- max speed : used to compute how long to turn the gps off
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- display points : display/hide points (not waypoints)
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### Caveats
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It is good to use but you should know :
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- the gps might take a long time to start initially (see the assisted gps update app).
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- gps signal is noisy : there is therefore a small delay for instant speed. sometimes you may jump somewhere else.
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- your gpx trace has been decimated and approximated : the **REAL PATH** might be **A FEW METERS AWAY**
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- sometimes the watch will tell you that you are lost but you are in fact on the path.
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- battery saving by turning off gps is not very well tested (disabled by default).
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- buzzing does not always work: when there is a high load on the watch, the buzzes might just never happen :-(.
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- buzzes are not strong enough to be always easily noticed.
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- be careful when **GOING DOWNHILL AT VERY HIGH SPEED**. I already missed a few turning points and by the time I realized it,
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I had to go back uphill by quite a distance.
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## Creator
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Feel free to give me feedback : is it useful for you ? what other features would you like ?
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frederic.wagner@imag.fr
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