---
title: "Use ROS open source code and lidar to locate and navigate the car??Calculation of odometer information"
url: "https://maker.wiznet.io/crawford/projects/Use-ROS-open-source-code-and-lidar-to-locate-and-navigate-the-carCalculation-of-odometer-information/"
markdown_url: "https://maker.wiznet.io/crawford/projects/Use-ROS-open-source-code-and-lidar-to-locate-and-navigate-the-carCalculation-of-odometer-information/md"
type: "UCC: User Created Content"
author: "crawford"
author_url: "https://maker.wiznet.io/crawford/"
original_author: "crawford"
original_url: "https://blog.csdn.net/RoboChengzi/article/details/82263091"
published: "2022-03-07"
language: "en"
hardware: ["WIZnet W5500"]
likes: 0
views: 259
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# Use ROS open source code and lidar to locate and navigate the car??Calculation of odometer information

> Use ROS open source code and lidar to locate and navigate the car??Calculation of odometer information

Original author: crawford (source: https://blog.csdn.net/RoboChengzi/article/details/82263091)

## Components

- **WIZnet W5500** x 1 ([docs](https://docs.wiznet.io/Product/Chip/Ethernet/W5500))

WIZnet parts: W5500 ([Datasheet](https://docs.wiznet.io/Product/Chip/Ethernet/W5500/datasheet?utm_source=maker&utm_medium=project&utm_campaign=w5500), [product hub](https://maker.wiznet.io/products/w5500/))

## Article

In the navigation and positioning, according to the information of the odometer, the gmapping algorithm is used to construct the map of the environment. The stm32F407 is used as the underlying drive control, and then a w5500 module is used to communicate with the computer host computer.

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Source: https://maker.wiznet.io/crawford/projects/Use-ROS-open-source-code-and-lidar-to-locate-and-navigate-the-carCalculation-of-odometer-information/