How To Use

The Wheeler Sunpredictor™ is an extremely powerful, yet simple to use hand-held sun prediction program. It instantly calculates the position of the sun for any date and time anywhere in the world.

The following step-by-step instructions will quickly get you started in using the application.

Creating A New Location

Create a new location Save a location
  1. Tap the "Location" tab
  2. From the menu tap "Location > New"
  3. Enter a name for the location in the top edit field
  4. Select the appropriate "Time Zone" for the location from the list
  5. Input the longitude and latitude for the location by either:
    • Using a Connected GPS Receiver:
      • Acquire GPS position
      1. Configure the GPS settings
      2. Turn on the GPS receiver (if applicable)
      3. Tap the "GPS" button
      4. A dialog like the one to the left will appear
      5. When a position has been acquired the dialog will close automatically
      6. The latitude and longitude values will automatically be filled in the appropriate fields
    • Manually Entering the Values:
      • Manually create location
      • Tap the Up/Down arrows next to "Lat" and "Long" to increment/decrement the values
      • Or use the on-screen keyboard (Soft Input Panel) to enter the values
  6. From the menu tap "Location > Save"

Predicting The Sun

Select date via pop-up Calendar Predict the sun's position
  1. Tap the "Prediction" tab
  2. Select the date that you require by:
    • Tapping the arrow next to the date field to display the pop-up calendar
    • Or using the on-screen keyboard (Soft Input Panel) to enter the date
  3. Make a prediction for a particular:
    • Time
      • Selecting a time
      • Tap the Up/Down arrows next to the time field to increment/decrement the time
      • Or use the on-screen keyboard (Soft Input Panel) to enter the time
      • Or "drag" the hands on the analog clock
    • Compass Bearing
      • Selecting a bearing
      • Tap the Up/Down arrows next to "Brg" to increment/decrement the bearing
      • Or use the on-screen keyboard (Soft Input Panel) to enter the bearing
      • Or "drag" the sun along its path on the graphic display
      • Or tap the bearing graduation on the graphic display
    • Angle of Elevation
      • Selecting an elevation
      • Tap the Up/Down arrows next to "Elev" to increment/decrement the elevation
      • Or use the on-screen keyboard (Soft Input Panel) to enter the elevation
      • Or "drag" the sun along its path on the graphic display
      • Or tap the elevation graduation on the graphic display
  4. When any of the parameters are changed the other parameters and the sun path graphic display are automatically updated

Changing The Settings

Customize GPS and program settings
  1. From the menu tap "Tools > Settings"
  2. Tap the checkbox to control the status of the "Splash Screen" at start up
  3. Select your preferred bearing format from the "Brg Type" list
  4. If you have a connected GPS receiver, select the appropriate "Accuracy", "Port" and "Baud" settings for the GPS