Dead Reckoning GPS and logging

GPS/GNSS Development Boards
1

I need to log data from a dead reckoning GPS and other sensors. I have the SparkFun GPS Dead Reckoning Breakout - NEO-M8U (Qwiic) and the SparkFun DataLogger IoT boards. The M8U isn’t listed a directly supported by the Data logger board but is there a way to bring in the GPS dead reckoning data so that it is synced with the data from the other sensor boards?

1 Like
2

Hi,

The DataLogger IoT is able to log data from the NEO-M8U, but only Position-Velocity-Time data (Latitude, Longitude, Heading, etc.). There is currently no way to make it log (e.g.) the vehicle attitude.

I hope this helps,

Paul

3

I am looking to use the dead reckoning feature to log position in a tunnel. Will the “dead reckoning determined position” be calculated on the NEO-M8U and sent to the logger as longitude/latitude?

The Data logger IoT board has an IMU - can I get attitude data logged from this source? If so, would I need to align the orientation of the data logger board and the NEO-M8U board?

4

Hi,

The dead reckoning capability will certainly help inside a tunnel. And, yes, the latitude/longitude will be updated based on the NEO’s internal IMU.

The DataLogger IoT 9-DOF has on-board IMU (Accelerometer and Gyro) and Magnetometer. You can calculate “AHRS” attitude from that. The sensor axes are marked on the PCB - both on the 9-DOF and NEO.

Best wishes,

Paul

5

Thank you!