LC29D
Table Of Contents
- Purpose of the Document
- Document History
- 1 Package Contents
- 2 Introduction
- 3 Typical Applications
- 4 GNSS Constellations
- 5 Augmentation System
- 6 Hardware Board and Case Diagram
- 7 Connecting using the UART or SPI
- 8 Using Serial Terminal
- 9 DR Configuration
- 10 Mounting
- 11 Dead-Reckoning Calibration
- 12 Enable Dead-Reckoning and 6-axis Sensor
- 13 Sensor Messages
- 14 Using QGNSS Tool
- 15 Using Arduino IDE
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GNSS Board v1.0 Copyright © 5GHUB.US
5.6 Dead Reckoning Function
Dead Reckoning is the process of estimating the module’s current position based on the last position
obtained from GNSS, speed, heading sensor data, etc. With this combined sensor inputs, the system
plots the navigation trace when the satellite signals are partially or completely blocked while satellite
signals provide updates and correction for sensor drift. With this technology, the system obtains
continuous and high-accuracy positioning in environments such as tunnels and urban canyons.
In addition, the module supports output of sensor raw data through UART to support your applications
such as driving behavior analysis.
6 Hardware Board and Case Diagram
Pin #
Feature
Direction
Description
J3-1
RESET_N
Input
Resets GNSS module
J3-2
WHEELTICK
Input
Odometer wheel-tick input
J3-3
1PPS
Output
One pulse per second
J3-4
FWD
Input
Forward/Backward direction
J3-5
GPS_EN
Input
Enable the GNSS module
J3-6
SDA
Input/Output
I2C data. Currently not used
J3-7
SCL
Input
I2C clock. Currently not used
J3-8
3.3V
Output
Output 3.3V
J3-9
GND
Output
Ground
J4-1
SPI_REQ
Output
Indicates SPI data validity