: Converts 5V (from USB) to 3.3V. It usually employs an ME6211 or similar low-dropout regulator to power the IOVDD pins. Internal 1.1V Core
: Usually hardwired to the 3.3V rail or connected to GP25 (the same as the standard Pico onboard LED). Schematic Advantages for DIY Projects ydrp2040 schematic
By studying the schematic, you can learn a great deal about the board's architecture: : Converts 5V (from USB) to 3