The role of Arduino is to sense the environment through various sensors, and to feedback and influence the environment by controlling lights, motors and other devices. The microcontroller on the board can be programmed using the Arduino programming language, compiled into a binary file, and burned into the microcontroller. Compared with various microcontrollers, the biggest advantage of this system is that it is very simple to use, just like building blocks. Even primary school students can quickly master Arduino and use it to make various inventions. Isn’t it interesting?