User Instructions for Solar Tracker [AR]

To get the most out of your app and learn about features for better sun tracking, this page will provide you with some useful information.

Main view


The main view is the starting view of the app. It displays the basic information about time for sun rise and sun set for the date displayed.
In the middle section of the view the sliding tiles displays more information. Change tile by sliding them left or right.

The tile with a graph show the length of day in hours on the y-axis and the months of the year on the x-axis. Changing location on the map view will update the graph.

The tile with the table of week and month show how much the lengt of day is changed comapred to the cureent date set. Both for previous and next week or month. E.g. if previous month shows +00:35, then the day a month ago was 35 minutes longer.

At the lower setion of the screen a compass rose is showing the estimated current bearing of the sun. The colored arc indicates the path of the sun from sun rise to sun set for the given date.

AR view


In the AR view you can project a sun image in the live camera view which will place it self on the right sun altitude (angle) for the bearing the device is pointing at for the moment. A green line indicates where the horizon would be if standing in terrain with no far horizon in sight.
The projected sun path is dependent on the location and time currently active in the app. The time zone set in the app must match the location when using the AR view.
In the lower right corner a camera button allows for taking snapshots of the view with te projected sun and horizon.

Important notes.
The AR view is relying on the device built in motion sensors and magnetic compass. Any interference creating incorrect compass bearing will make the app behave incorrect.
To reduce error sources, calibrate the device compass using the iOS own compass app. Move away from magnetic fields. Also activating flight mode can improve accurracy.
If the sun is not aligned to the real sun due to heading errors, the sun icon in the view can be adjusted by using the slider in the view. Slide left or right to adjust the sun up or down until it is aligned with the sun at the right time and altitude. Obviously this will not work on cloudy days.

When using the app in regions where the sun altitude approaches zenith angles (close to 90 degrees) the AR view will be very sensitive to changes in the compass reading since each degree will change the sun altitude a lot. Also the fact that the sun moves more direct from east to west and not so much north or south can make the app behaviour to be percieved as jump at times.

Date view


Dates can be set using the date picker and a fast return to current date can be don by pressing the Today button. The date selected will by used for recalculating sun data in the app when returning to the main view.
Teh app will by default select the device time zone but this can be changed using the time zone picker in the lower section of the view. Default time zone format is GMT but by deactivating GMT mode iOS device time zones can be used instead.
Working with time zones is required if correct sun rise and sun set time should be displayd for locations outside your current time zone.

Map View


To calculate sun data for any location, just move and zoom to a new location an press for about a second and the location pin will move to that location.
Pressing the current location button in the top right corner sets the location to the device current location.