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describeESP32 Rev1 Wi-Fi, the Bluetooth built-in ESP - WROOM - 32 microcomputer module, is used on the test circuit board. The central part of the test circuit board plug is compact, 300 mil wide, and the other parts are blocked. In addition, the reset and program write mode switching circuitry is also loaded, so there is no need to make it on another model.Use instance pictures   Notice:This product is shipped without welding. The shipping list is shown below.
Test program/** Connect the SD card to the following pins:** SD Card | ESP32* D2       12* D3       13* CMD     15* VSS     GND* VDD     3.3V* CLK      14* VSS      GND* D0 2 (add 1K pull up after flashing)* D1 4*/#include "FS.h"#include "SD_MMC.h"void listDir(fs::FS &fs, const char * dirname, uint8_t levels){Serial.printf("Listing directory: %s\n", dirname);File root = fs.open(dirname);if(!root){Serial.println("Failed to open directory");return;}if(!root.isDirectory()){Serial.println("Not a directory");return;}File file = root.openNextFile();while(file){if(file.isDirec...
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