Features: 1Microcontroller Development Board: RP2040 microcontroller chip designed by for RasPi is adopted. 29 GPO pins of RP2040 are extracted (20 can be extracted through pin array, and the rest can only be extracted by welding). 2Excellent Processor: The microcontroller development board has a dual core for ARM Cortex M0 processor that runs at frequencies up to 133MHz. 34MB Flash: Built in with 264KB of SRAM and 4MB of on chip Flash, it is a true stamp hole design that can be welded directly into the user designed backboard. 4USB Recognition: USB 1.1 host and device support, support low power consumption sleep and sleep mode, and can be identified as mass storage through USB for drag and drop downloading programs. 5Multifunctional: Precise on chip clock and timer, temperature sensor, on chip acceleration floating point library, 8 programmable Wo (PO) state machines for customized peripheral support. Package included: 1 x Microcontroller&nbspDevelopment&nbspBoard