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Indeed this observation proved accurate: the ESP32 Qwiic Pro Mini board, with its attached ESP, is noticeably bigger than the Arduino Pro Mini. Next, I look at the schematic provided by SparkFun. The ...
Arduino Pro Mini 328P 3.3V Desoldered PS2's memory card port, same physical interface and pinout Connected 1,2,4,5,6,7,8 pin from memory card port to corresponding Pro Mini pins and soldered to ...