ESP32C312F case with USBA connector opening
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ESP32-C3-12F case with USB-A connector opening

Simple case for the new ESP32C312FKit board with glued on USBA connector for power like in the picture Adjust the placement of the opening if you like it otherwise Both parts friction fit together and hold the board firmly No screws needed ...

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ESP32-C3-12F case with USB-A connector opening alternatives