Title: Drive the digital tube to display dynamically, and move from right to left on 8 digital tubes and display the number "2019" cyclically. Use the toggle switch or key as the external interrupt re
First of all, I felt novel when I saw this level test, and then I thought of the kids of engineers in our forum... Then I thought of the ESP32 development environment that was complained by engineers,
I suddenly had the urge to do a series of topics on sound visualization. This topic is a bit difficult and covers a wide range of areas. The related FFT and FHT algorithms are also quite complicated,