The high level of English is a standard for a top student.
1. When we are young, we may want several love experiences. But as time goes on, you will realize that if you really love someone, the whole life will not be enough.
2. A dream doesn’t become reality through magic; it takes sweat, determination, and hard work.
3. When I stay in home (X) When I stay at home(V)
4. Taking the advantage of young, go where want to go to, see to see, don‘t give life leave too much regret.
5. Fall in love with an important symbol is: any beauty met in regret, why you‘re not around.
6. Life never stops pushing forward. Stay focused and never slow down with regrets. Smile, forgive, forget, and keep moving!
7. People say you don’t know what you’ve got till it’s gone. Truth is, you knew what you had, you just never thought you’d lose it.
8. There are always going to be people who are smarter, better looking, more sociable, and just all around "better" than you. In fact, you‘ll learn there are LOTS of people who fit that description. To be happy, then, you have to learn to accept yourself and your shortcomings.
9. Adult life is about learning to live with ambiguity. Remember when you thought you‘d have it all sorted out by 30? No, whether it be your career, your relationships or your beliefs, you will always question whether you are making the right choices and will have to deal with regret.
10. Never get stuck with the thing that ruins your day. Stay upbeat and be happy; for life is too short to be wasted on crap.
11. Never limit yourself because of others’ limited imagination; never limit others because of your own limited imagination.
12. We may forget our failures, but we must remember the lessons learned from the failures.
13. In every walk with nature one receives far more than he seeks.
14. Give every day the chance to become the most beautiful day of your life.
15. Be alike flower. Spread beauty and happiness wherever you stay; irrespective of your surroundings.
Reanding books (72~153 page)
Message Communication
There are three different methods of exchanging messages: a topic which provides a unidirectional message transmission/reception, a service which provides a bidirectional message request/response and an action which provides a bidirectional message goal/result/feedback.
ROS: an open-source Robot Operating System
(http://www.willowgarage.com/sites/default/files/icraoss09-ROS.pdf)
Turtlebot3 summary (http://wiki.ros.org/turtlebot3)
1. Overview
TurtleBot3 is a new generation mobile robot that is modular, compact and customizable. Let’s explore ROS and create exciting applications for education, research and product development. The goal of TurtleBot3 is to drastically reduce the size and lower the price of the platform without sacrificing capability, functionality, and quality. Optional parts such as chassis, computers and sensors are available, and TurtleBot3 can be customized in various ways. TurtleBot3 is willing to be in the center of the maker movement by applying the latest technical advances of the SBC(Single Board Computer), the Depth sensor and 3D printing technology.
2. ROBOTIS e-Manual (http://emanual.robotis.com/docs/en/platform/turtlebot3/overview/)
3. ROS Wiki related to related to TurtleBot3
- turtlebot3
- turtlebot3_msgs
- turtlebot3_simulations
- turtlebot3_applications
- turtlebot3_autorace
- turtlebot3_deliver
- hls_lfcd_lds_driver
- open_manipulator
- open_manipulator_with_tb3
- dynamixel_sdk
- opencr
4. References related to TurtleBot3
- Website for TurtleBot Series
- “Introducing the TurtleBot3” on ROSCon2016 (PDF)
- “Introducing the TurtleBot3” on ROSCon2016 (Video)
- “TurtleBot3 AutoRace” on ROSCon2017 (PDF)
- “TurtleBot3 AutoRace” on ROSCon2017 (Video)
- e-Book for TurtleBot3
- Videos for TurtleBot3
- YouTube Channel of ROBOTIS OpenSourceTeam
- Community for People Making Robots
原文地址：https://www.cnblogs.com/sancai16888/p/9726947.html