Using RP2040 microcontroller chip independently designed by Equipped with dual-core ARM Cortex MO+ processor, running frequency up to 133MHz flexible clock.Adopt 's CYW43439 wireless chip, support 2.4/5 GHz band Wi-Fi 4 wireless network.-in 264KB SRAM and 2MB on-chip FlashStamp hole design, which can be directly welded and integrated into the bottom plate designed by the userDrag-and-drop program download via USB recognition as mass Up to 26 multi-function GPIO pins2 SPI, 2 I2C, 2 UART, 3 12-bit , 16 controllable PWM channels on-chip clocks and timersTemperature SensorOn-chip accelerated floating- library8 programmable I/O (PIO) state machines for custom peripheral supportColor: greenMaterial: PCBPackage Contents:1 x Development Board(No Welded)Only the above package content, other products are not included.Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.