5V and 3.3V power supplies are often used in experiments, but only 5V can be output through the USB cable in hand, so I drew a TypeC power supply card, and the 5V and 3.3V voltages can be connected through the USBTypeC cable. In addition, the CC pin of the USB TypeC interface is also considered, and a 5.1K resistor is pulled down to adapt to most TypeC power ports.
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