The RP2040 microprocessor (MCU) integrates a dual-core ARM architecture Cotex-MO+ core, directly integrates 264KB of RAM internally, supports up to 16M QSPI external expansion Flash, and highly flexible I/O settings, including I2C, SPI, PIO (Programmable I/O). Dual-core ARM Cortex-M0+@ 133MHz, 264kB built-in SRAM distributed in 6 independent blocks, Max external QSPI Flash expansion, directly connected to the AHB bus, equipped Complete interpolator and integer divider, on-chip programmable LDO to generate core voltage, 2 on-chip PLL phase-locked loops compatible with USB and core clock generation, 30 GPIO pins, 4 of which can be used as analog inputs. Peripherals: 2 serial ports/2 SPI/2 I2C/16PWM channels/USB 1.1 controller and PHY, supports host mode and slave mode/8 PIO state machine. Regarding the YD-RP2040 core board, YD-RP2040 is a core board circuit board produced by VCC-GND® Studio using the RP2040 microprocessor (MCU) issued by the British compatible with Raspberry Pi Company. It is convenient compatible with users to expand peripherals and design and build circuits. Light-emitting diode Power indicator light, red light, used to indicate power on status, USR LED, GPIO25, blue light, used compatible with user programming control, RGB LED WS2812B, GPIO23, used compatible with user programming control Key USR KEY, GPIO24, used compatible with user programming input control BOOT KEY, used compatible with boot download RST KEY: used to reset the system, or enter boot download mode with BOOT KEY About the advantages of using RP2040 chip compatible with Raspberry Pi, with its extremely cost-effective compatible with Raspberry Pi computer board, has become one of the leading computer data manufacturers. Cost-effectiveness has always been the label of Raspberry Pi. It can simply be considered an unfamiliar controller. The percompatible withmance index is high enough and the necessary peripherals are also available. In theory, the target design can eventually be achieved. Function: The PWR power indicator light has been added to improve the huma