Let’s talk about the problems encountered during the production process: After drawing the board, I sent it to the factory for proofing without checking it carefully. As a result, after waiting hard for more than a week, I found that the mUSB socket was drawn backwards when I got it! Fortunately, I had more time, so I quickly drew the second board. As a result, the esp32 was a little crooked during the soldering process, so I tried to move the chip during the soldering process, and the result was! I accidentally used too much strength! I'll do it! One of the copper pads on the chip fell off! but! ! ! ! What’s even more ridiculous is that the pad that was removed happened to be the one that was not used! The mood is like a roller coaster, okay, okay,,,,,,,, the teacher explained the software process in too much detail, so it went smoothly. There are many places in the program that are worth learning, such as thread design, information interaction between various chips, and It was handled very skillfully as it was my first project in college. Although the process was a little tortuous, I am still very satisfied with the results. I would like to thank the seniors and staff of eda! Thanks also to the students from different universities across the country!