Secularly speaking: almost useless.

(Whether you can reach the pinnacle of life has nothing to do with how many "tools" you have in your hands, but mainly has to do with whether you can use tools to create value)

A detailed explanation is as follows:

From a secular point of view, almost every household at home and abroad is equipped with a kitchen, and basically has the equipment for cooking.

How many people can become Michelin three-star chefs?

Quote:

All "tools" are "hammers"!

How much is the hammer worth?

It's okay, don't buy a bunch of tools...

In the era of cold weapons, the lethality of a sword in the hands of people of different martial arts ranks is not at the same order of magnitude.

This question was mentioned a long time ago, but every year, students ask why they learn it, what is the use of it, and whether they can earn a lot of money if they learn it well.

https://zhuanlan.zhihu.com/p/96940278

How long does it take to get started with ROS2? 3 days;

How long does it take to develop a basic robot in ROS2? 3 weeks;

How can ROS2 be considered "proficient"? Impossible, not even in 3 years...

Update (2019.12.18):

Problem orientation takes precedence over tool (ROS) orientation:

Based on the background of the problems related to the direction of the robot that need to be solved, choose the appropriate tools for design and development, instead of looking for problems with ROS tools. (First clarify the requirements, analyze the problem, and then select tools to improve efficiency)

Value orientation takes precedence over platform (ROS) orientation:

Create value instead of standing on the platform and waiting for the wind to come. (First clarify the meaning, extract the value, then choose the platform, realize and create)

In the process of learning IT technology, have you also been taught various technical training courses by Amway? How are these training courses advertised to you, and what is your attitude towards it? Is it really useful to learn technology in training courses?

AI：

In the process of learning ROS robot technology, Amway has indeed taken various technical training courses. These training courses promote their courses and training content to me through various publicity means, such as social media, forums, emails, etc.

These promotions usually emphasize the following aspects:

Course quality: Publicity usually emphasizes the quality of training courses, including the depth and breadth of course content, the qualifications and experience of lecturers, and the practicality and authority of course materials.
Practical experience: Advocacy usually emphasizes practical experience in the training process, including experiments and project practice, problem-solving skills, communication and cooperation with peers and mentors, etc.
Industry Outlook: Publicity will often emphasize the industry outlook and development trends of ROS robotics, as well as the importance of this skill for future employment and career development.

Regarding these propagandas, I think it is necessary to maintain a prudent and rational attitude. You need to conduct your own research and comparison, and choose a training course that suits your learning needs and actual situation. At the same time, you need to maintain the spirit of continuous learning and exploration, and apply the learned skills to actual projects in order to truly grasp the essence and practical value of ROS robot technology.

In general, learning ROS robotics in the right class is useful, but not the only way to learn. The most important thing is to maintain an attitude of continuous learning and practice, and constantly explore and master ROS robot technology.

You can create from the following aspects (for reference only)

Topic template:

(Reminder: Please delete unnecessary content before publishing your work.)

1. Introduce the topic

Tip: This topic can be introduced by analyzing the future development trend of the IT industry or the learning method of IT technology

AI：

ROS robot technology is one of the important technologies in the field of robotics in the future. With the continuous development of artificial intelligence and Internet of Things technology, ROS robot technology will also be more widely used. In the future, ROS robot technology will play a greater role in the fields of industry, medical care, and aviation, and realize more intelligent and automated production and services.

In the process of learning ROS robot technology, we need to master the knowledge of computer science, robot engineering, sensor technology and other fields. At the same time, we need to continue to practice and explore in order to truly master the core skills of ROS robots.

For the learning of ROS robots, we need to master the following aspects:

Basic knowledge of ROS: including basic concepts such as ROS architecture, ROS nodes, message passing, and services, as well as the format and writing method of ROS files.
ROS programming language: ROS supports multiple programming languages, such as C++, Python, Java, etc. You need to choose a programming language that suits you for development.
ROS sensor: ROS supports a variety of sensors, such as lidar, camera, GPS, etc. It is necessary to understand the principle and data format of the sensor, as well as how to collect and process data.
ROS navigation and mapping: ROS supports navigation and mapping functions. It is necessary to master SLAM algorithm and map construction technology, as well as how to perform real-time positioning and path planning.
ROS machine vision: ROS supports machine vision technology. It is necessary to master the basic principles and applications of computer vision, and how to use the vision library in ROS for image processing and target recognition.

In short, learning ROS robot technology requires comprehensive quality, including knowledge in computer science, engineering, mathematics and other fields, as well as the spirit of practice and exploration. Only through continuous learning and practice can we continuously improve our skills and abilities and adapt to the future development trend of the ROS robot industry.

2. The benefits of learning IT training courses

Tip: Analyze the advantages of training courses on IT technology, such as systematic knowledge coverage, providing practical projects and practical opportunities, exercising skills, etc.

AI：

The main benefits of learning ROS robotics training courses are as follows:

Systematic knowledge coverage: ROS robotics involves many fields, including computer science, robotics engineering, sensor technology, etc. By participating in the systematic learning of training courses, you can fully cover these knowledge areas, establish a complete knowledge framework, and avoid blind spots and omissions in your own learning.
Provide practical projects and practical opportunities: ROS robot technology is a technology that requires practical operation and practice. Training courses usually provide practical projects and practical opportunities, allowing students to apply theoretical knowledge to practical projects and exercise students' skills and experience.
Professional guidance and tutoring: ROS robotics can be difficult for beginners. Training courses usually provide professional guidance and counseling to help students solve technical problems and doubts, and improve students' learning efficiency and quality.
Exercise skills and expand contacts: Participating in ROS robotics training courses can meet like-minded classmates and mentors, establish good personal connections, and provide help for future career development. At the same time, by completing practical projects and operations, you can exercise your skills and experience and enhance your competitiveness in the industry.

To sum up, the benefits of learning ROS robot technology training courses are to provide systematic knowledge coverage, provide practical projects and practical opportunities, professional guidance and counseling, as well as exercise skills and expand contacts. These advantages can help students quickly master ROS robot technology, improve their skills and abilities, and adapt to the future development trend of the ROS robot industry.

3. The risks of learning IT training courses

Tip: Analyze the challenges of training courses on IT technology, such as high tuition fees and time investment, etc.

AI：

The main challenges of learning ROS robotics training courses are as follows:

High tuition fees: Training classes in ROS robotics often require paying high tuition fees, which can be prohibitive for many students. In addition, the cost of some training courses may vary in different regions and time periods, which need to be carefully considered and compared.
Time investment: Participating in ROS robotics training courses requires a lot of time and effort, including not only classroom learning, but also practical projects and practical exercises. For those already working, it may be necessary to take time off or adjust work arrangements to ensure full participation in the training.
Matching of training content and actual application: The training content provided by different training courses may be different, and some content may be too old or not match the actual application. Therefore, when choosing a training course, you need to carefully study the training content and match it with your actual needs.
The quality of training courses is uneven: Due to the upsurge of ROS robot technology, many training institutions have launched corresponding training courses. The quality of these training courses may vary and needs to be carefully selected and evaluated.

To sum up, the challenges of learning ROS robotics training courses lie in high tuition fees, time investment, matching of training content and practical application, and uneven quality of training courses. When choosing to participate in ROS robotics training courses, you need to carefully consider your needs and actual situation, choose a training course that suits you, and fully invest your time and energy to obtain the best learning effect.

4. Personal Requirements for Training Courses

Tip: analyze the different effects of training courses on different groups of people, and analyze what kind of people are suitable for training courses

AI：

The ROS robot training course has the following main requirements for individuals:

Interest and enthusiasm for ROS robotics: A strong interest and enthusiasm for ROS robotics is the basic requirement for participating in the training class, because only in this way can the enthusiasm and motivation for learning be maintained.
Some computer science and programming foundation: ROS robotics involves several fields, of which computer science and programming are the foundation. Therefore, participating in the training course of ROS robotics requires a certain foundation of computer science and programming in order to better understand and apply ROS robotics.
Have a certain mathematical and physical foundation: ROS robotics involves mathematical and physical knowledge, such as linear algebra, calculus, kinematics and dynamics. Therefore, having a certain mathematical and physical foundation can help to better understand and apply ROS robot technology.
Possess a certain learning and practical ability: ROS robot technology requires practice and exploration. Participating in training courses requires a certain learning and practical ability to better understand and apply ROS robot technology.

To sum up, those who are suitable for ROS robotics training courses should be those who have a strong interest and enthusiasm for ROS robotics, have a certain foundation in computer science and programming, mathematics and physics, and have the ability to learn and practice. At the same time, different people have different learning abilities and backgrounds. When choosing to participate in ROS robotics training courses, you need to carefully consider your actual situation, choose a training course that suits you, and fully invest time and energy to obtain the best learning effect.

5. Subjective feelings and other thoughts

Tip: Tell me your judgment on whether the training course is useful based on your personal experience, or add other feelings you want to share

AI：

As a person who has participated in the ROS robot technology training class, I think the training class is helpful for learning ROS robot technology. Through systematic learning and practical operation, I was able to quickly master the basic concepts and skills of ROS robotics, which improved my learning efficiency and quality. At the same time, the practical projects and practical opportunities provided by the training class also enabled me to apply theoretical knowledge to practical projects and exercise my skills and experience.

However, I also think that training courses are not a panacea. Personal effort and investment are also very important for learning ROS robotics. Participating in the training course only provides a starting point. Whether you can finally master the core skills of ROS robotics requires your own continuous practice and exploration.

In addition, I also think that in the process of learning ROS robot technology, it is necessary to maintain the spirit of continuous learning and exploration, constantly learn new knowledge and technology, and keep up with the development trend of the industry. Only in this way can we truly grasp the essence and practical value of ROS robot technology.

To sum up, ROS robotics training courses are helpful for learning ROS robotics, but personal efforts and inputs are also very important. At the same time, it is necessary to maintain the spirit of continuous learning and exploration, constantly learn new knowledge and technologies, and keep up with the development trend of the industry.

The most commonly used C++ sample codes for ROS robot training courses include the following:

1 ROS node initialization and message publishing:

#include <ros/ros.h>  
#include <std_msgs/String.h>  
  
int main(int argc, char\*\* argv)  
{  
  // 初始化ROS节点  
  ros::init(argc, argv, "my_node");  
  
  // 创建ROS节点句柄  
  ros::NodeHandle nh;  
  
  // 创建消息发布者  
  ros::Publisher pub = nh.advertise<std_msgs::String>("my_topic", 10);  
  
  // 循环发布消息  
  while (ros::ok())  
  {  
    // 创建消息  
    std_msgs::String msg;  
    msg.data = "Hello, ROS!";  
  
    // 发布消息  
    pub.publish(msg);  
  
    // 睡眠等待  
    ros::Duration(1.0).sleep();  
  }  
  
  return 0;  
}

2 The ROS node receives the message and processes it:

#include <ros/ros.h>  
#include <std_msgs/String.h>  
  
void messageCallback(const std_msgs::String::ConstPtr& msg)  
{  
  ROS_INFO("Received message: %s", msg->data.c_str());  
}  
  
int main(int argc, char\*\* argv)  
{  
  // 初始化ROS节点  
  ros::init(argc, argv, "my_node");  
  
  // 创建ROS节点句柄  
  ros::NodeHandle nh;  
  
  // 创建消息订阅者  
  ros::Subscriber sub = nh.subscribe<std_msgs::String>("my_topic", 10, messageCallback);  
  
  // 循环等待消息  
  while (ros::ok())  
  {  
    // 睡眠等待  
    ros::Duration(1.0).sleep();  
  }  
  
  return 0;  
}

These sample codes show the most basic C++ code examples in the ROS robot training class, including the publishing and receiving of messages. Through these sample codes, you can better understand the basic concepts and principles of ROS robotics, and be able to practice and explore better.

Will learning ROS1/ROS2 robots be able to reach the pinnacle of life?