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| About CC3D nav |
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| About CC3D nav |
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IntroductionGPS sensor is needed for every autonomous features, this sensor provides: - position with Lat/Lon coordinates and altitude,
- velocity
- time
Preferred protocol is UBX, more efficient than NMEA and should provide a most accurate velocity state. Another thing to consider when GPS features are wanted: refresh rate, at least 5Hz. A GPS without a compass/magnetometer has some value when flying FPV with an on screen display (OSD) or returning data to the LibrePilot Ground Control Station (GCS). Telemetry, such as altitude, air speed and/or ground speed and distance may be available. Recording lattitude and longitude could be available and would be useful attempting to locate a lost craft. Capabilities NOT available without a properly functioning compass/magnetometer are GPS Assist, PositionHold, CourseLock, VelocityRoam, HomeLeash, AbsolutePosition, ReturnToBase, Land, PathPlanner and AutoTakeOff. Although the Revolution flight controller has an on-board magnetometer it cannot provide dependable data for smaller craft (250mm). |