Tip: The YD-RP2040 isn't 100% compatible with name-brand Raspberry Pi Pico boards. If you need to build something that has it acting as a USB host, prepare for the slightly fiddly job of tacking a piece of resistor leg between the two legs of a BAT54C barrier diode facing the USB C connector to allow current from Vin to flow to the USB connector... also, the (VBUS) and (VSYS) silkscreens on the bottom are wrong. Vout is *not* VBUS. Follow https://github.com/initdc/YD-RP2040/blob/master/YD-2040-2022-V1.1-SCH.pdf #electronics