The Arduino software language only needs to master a few instructions, and the instructions are also readable. You can understand the C language a little, easy to use, and quick to apply. The concept of Arduino is open source, the software and hardware are completely open, and there is no technical reservation. For the Arduino programming of peripheral I / O devices, many commonly used I / O devices already have library files or sample programs. On this basis, simple modifications can be made to compile more complex programs and complete diverse functions s work.