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: A built-in WS2812 addressable LED connected to GPIO 23 . Blue User LED : A standard indicator connected to GPIO 25 . Pinout and Logic Levels follows the standard RP2040 electrical specifications: Logic Voltage : 3.3V . The board is not 5V tolerant . ydrp2040 schematic
A standard 12MHz crystal provides the clock signal, typically requiring a 1k ohm resistor and specific load capacitors to ensure stability. Have a YDRP2040 schematic you want analyzed