The CH34X family comprises widely used USB‑to‑serial chips manufactured by WCH (WinChipHead), commonly integrated into generic UNO R3, ESP8266, and ESP32 development boards.
Overview
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The Lonely Binary SD Card ESP32 Shield connects to the ESP32 using the SPI (Serial Peripheral Interface) Bus. This connection utilizes four GPIO pins on the ESP32: MISO, MOSI, SCK, and CS, in addition to the required power and ground connections. You can use the same SPI bus to connect multiple devices; however, each device must have its own CS pin, while MISO, MOSI, and SCK pins can be shared with the Lonely Binary SD Card ESP32 Shield.
It is essential to format the SD card with the FAT32 file system. For optimal performance, we recommend using a genuine SanDisk SD card.
This shield is particularly useful for projects that require extensive data storage.
Resources
Micro SD Card ESP32 Shield
$9.00
Tutorial
HC-05 Bluetooth Module and Arduino Beginner Tutorial
This is a basic example to get you start with HC-05 Bluetooth Module. Depending on your specific requirements and the functionality you want, you may need to expand and modify the sketch accordingly.
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