To set up the odometer, the appropriate GPIO pin should be set to Odometer Input using Boreas Manager. The
odometer pulse length must then be set either manually or automatically, see
for
more information.
For more information on the GPIO signals and their requirements see
10.6 GPIO Pins and the Auxiliary Port
7.10.2 OBDII Odometer Interface
For applications where it is undesirable to modify the vehicle or the system needs to be used with multiple
vehicles, the OBDII odometer interface may be a better solution. OBDII is a vehicle diagnostic port standard
and most vehicles from the mid 1990s onwards contain an OBDII port in the drivers side foot well. Advanced
Navigation produces an inexpensive OBDII Odometer Interface that plugs into this OBDII port and feeds
Boreas with odometer data over the Auxiliary RS232 port. See the figure below. Contact the Advanced
Navigation sales team at
for more information.
Figure 20: Advanced Navigation OBDII Odometer
7.10.3 Aftermarket Wheel Speed Sensor
Applications requiring very high performance without GNSS for any length of time are recommended to use a
high precision aftermarket wheel speed sensor. Advanced Navigation recommends aftermarket wheel speed
sensors from Kistler, Pegasem or GMH Engineering.
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Boreas Reference Manual • Installing Boreas
