Features Onboard STM32F405RG MCU 168 MHz - CPU with 32-bit hardware floating point 1 MB flash storage, 192 KB RAM USB port, support serial port, universal storage, HID protocol Description The MicroPython development board, which is based on the STM32F405 microcontroller, transmits data via the USB interface. The development board has 4 LED lights and an accelerometer, which can work normally between 3.6V-10V. Let Python be to do geeks, use Python to control hardware, and support Python language development boards. SD card slot MMA76603 Accelerometer 4 LEDs, 1 reset button, 1 universal button 3.3V0.3A onboard , can be powered from USB port or external battery Real Time Clock 30 general-purpose IO ports, 28 of which support 5V input and output 2 SPI interfaces, 2 CAN interfaces, 2 I2C interfaces, 5 USART interfaces 14 12-bit ADC pins 2 pins Board size: 49.4 x 51.1mm Board function description: the interface description: U3: SD card slot MICRO: USB power port : Reset button P1-P8: Development Board Expands More Peripheral Interfaces Color: Blue Material: PC Package Contents: 1 x STM32F405RGT6 STM32 Development Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.