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I prefer this over micro USB as it feels more robust, and I do not have to worry about correctly guessing the orientation. A welcome addition to RP2040-PICO30 is a USB C connector for data and power. The RP2040-PICO30 removes four GND connections in order to squeeze a few more GPIO pins into the pinout, while retaining general compatibility. The pinout for the Raspberry Pi Pico has 40 pins in total, with the remaining 10 used for multiple GND connections, 3.3V, 5V and ADC voltage reference. Four pins are reserved for controlling the power supply (GPIO23), USB detection (GPIO24), status LED (GPIO25) and monitoring the power supply (GPIO29). The standard pinout for the Raspberry Pi Pico and Raspberry Pi Pico W has 26 GPIO pins, which can be controlled by the user.
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