There’s not much to say, it’s just an ordinary ESP32-C3 pure chip development board. It is recommended to use C3 with built-in Flash.
Then there are two USBs. The upper one is for the serial port chip, and the lower one is directly connected to the USB pin of C3. The corresponding two IOs can be multiplexed.
The signal...it's not satisfactory, but it's not that it can't be used.jpg
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