Author: Alvaro Pintado
Date: Last modified on 07/23/16
Keywords: dGPS, NXT, Potential Field
The Dexter Industries GPS is a GPS unit manufactured for use with the LEGO® MINDSTORMS® NXT. The sensor calculates positional and navigational data. It then delivers latitude, longitude, time, velocity, angle of travel, and navigational information such as distance and angle to a specified destination. The dGPS can be accurate up to 3 meters as most civilian GPS sensors are. Below is a diagram for the dGPS sensor and a table of percent difference calculations to a modern smartphone.
Here's an example of how to mount the dGPS sensor on the LEGO Tribot
The dGPS sensor takes a couple minutes to find a satellite signal, even up to 10 minutes on it's first use.
Before a signal is acquired, the GPS will begin sending the default location and time (121000000 E, 24000000 W) until a valid signal is locked by the sensor.
After the dGPS sensor finds a satellite signal, the on-board LED will shine blue and you should have a screen on your NXT that look similar to this:
This tutorial's objective was to instruct the reader on how to integrate the dGPS sensor with their LEGO NXT robot.
The sample program has all the sensor functions and how they should be implemented into a program. From there one can integrate them into their own program.
For questions, clarifications, etc, Email: firstname.lastname@example.org