The pyboard v1.1 is a compact and powerful electronics development board that runs MicroPython. It connects to your PC over USB, giving you a USB flash drive to save your Python scripts, and a serial Python prompt (a REPL) for instant programming. Requires a micro USB cable. MicroPython is a complete re-write of the Python (version 3.4) programming language so that it fits and runs on a microcontroller. It includes many optimisations so that it runs efficiently and uses very little RAM. MicroPython runs bare-metal on the pyboard, and essentially gives you a Python operating system. The built-in pyb module contains functions and classes to control the peripherals available on the board, such as UART, I2C, SPI, ADC and DAC. Differences between PYBv1.0 and PYBv1.1: high-speed crystal changed from 8MHz to 12MHz; LDO changed from MCP1802 to MCP1703; USB VBUS power diode replaced with silicon diode; JST battery connector pads added with protection FET. Specification: STM32F405RG microcontroller 168 MHz Cortex CPU with hardware floating point 1024KiB flash ROM and 192KiB RAM Micro USB connector for power and serial communication Micro SD card slot, supporting standard and high capacity SD cards 3-axis accelerometer (MMA7660) Real time clock with optional battery backup 24 GPIO on left and right edges and 5 GPIO on bottom row, plus LED and switch GPIO available on bottom row 3x 12-bit analog to digital converters, available on 16 pins, 4 with analog ground shielding 2x 12-bit digital to analog (DAC) converters, available on pins X5 and X6 4 LEDs (red, green, yellow and blue) 1 reset and 1 user switch 3.3V LDO voltage regulator, capable of supplying up to 250mA, input voltage range 3.6V to 16V DFU bootloader in ROM for easy upgrading of firmware The two mounting tabs on the pyboard have perforations so that you can snap them off cleanly if needed Package Includes: 1 Piece MicroPython Pyboard v1.1 Powerful Electronics Development Board Note: The color of the USB Cable is sent in random (White or black) (2 Pack)