VIDEO VBOX LITE MANUAL
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22 December 2009
Creating Circuit Overlays
A circuit overlay is a file (.cir) created to map the outer and inner bounds of a circuit, or stage, and is required to
create a track map element in the Video VBOX Setup software. The software comes with a library of circuit overlays
created by Racelogic and are also available from:
http://www.driftbox.com/dlfiles.html
NOTE:
If a Circuit Overlay does not exist for a particular track it is possible to create one in either of two ways. An
overlay file can be created either by driving around the circuit, or by creating a .kml file in Google Earth and importing
it into VBOX Tools.
Creating an Overlay File by Driving the Circuit
Drive to the left hand side of the start of the circuit.
Place the antenna on the left hand side of the roof.
Power up the Video VBOX LITE and let it acquire satellites.
Insert the SD card ready for logging.
Drive round the left hand side of the circuit.
Stop back at the place you started.
Move the antenna from the left hand side of the roof to the right hand side slowly, being careful not to cover
the aerial – let it see the sky at all times.
Drive at a right angle across the track to the opposite side.
Drive round the right hand side of the circuit in the same direction stop at the point where the track was
crossed.
Load the logged file from the media using ‘File’ -> ‘Load All’
Save using ‘Save’, select ‘Save as type’ and pick ‘Circuit file’ (‘.cir’).
Creating an Overlay File For a single direction ‘Special Stage’
Drive to the left/right hand side of the start of the stage.
Power up the Video VBOX LITE and let it acquire satellites.
Insert the SD card ready for logging.
Drive the route on the left/right hand side of the track.
Stop where the finish line is located.
Drive at a right angle across the track to the opposite side.
Drive the route back on the left/right hand side of the track.
Drive at a right angle across the track to the starting position.
Load the logged file into VBox Tools from the SD card using ‘File’ -> ‘Load All’
Save using ‘Save’, select ‘Save as type’ and pick ‘Circuit file’ (‘.cir’).
If the Circuit Overlay is to be used to make a track map it is important that the .VBO file use to create the .Cir file
contains one lap of the circuit on the inner side of the track, and one lap on the outer. If the file contains more data
use the ‘edit data’ button to crop the file to the required length.
Creating an Overlay File in Google Earth
TM
Please refer to the Google Earth help files for instructions on creating paths in the
software. Once you have plotted a path along the inside and outside of your chosen
track, it must be saved as a .kml file. This can then be imported into VBOX Tools by
clicking on ‘
TOOLS
Import Data‘.
Once the .kml file has been imported, it can be re-saved as a .cir file for later use with lap
data from the circuit.
