We know that the frequency spectrum of sound ranges from tens to thousands of hertz. If we can use the program to control the "high" level or low level of a certain port line of a single machine, a re
Beetle_ESP32-C3 Arduino routine learningDocument NumberTN_TR0003_A0KeywordsArduino, ESP32-C3, WIFI, BLE, RISC-VsummaryUsing online information resources, by studying routines on DFRobot, CSDN, and git
1. Introduction
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