1、Premium Design: Adopting the RP2040 microcontroller chip independently designed. Dual core ARM for Cortex M0+ processor, running at frequencies up to 133MHz, flexible clock. 2、Clear Display: Built in 264KB SRAM and 4MB onboard Flash. On board 1.14 inches 240 x 135 pixel 65K color IPS LCD display screen. 3、Standard Interface: On board 3PIN SWD interface, used to connect the target board being debugged. Standard CMSIS‑DAP interface, which can be used to debug most ARM based microcontrollers. Suitable for OpenOCD and other debugging tools that support CMSIS‑DAP. Using the same type of 3PIN debugging interface specification. 4、UART Interface: On board 3PIN UART interface, which can be used to implement the function of USB serial port adapter. 5、I2C Interface: On board 4PIN I2C interface, which can be used to test the target board. Using open source firmware makes upgrading firmware more convenient.