ARM 32-bit master: Dual USB download, Native USB port to emulate Due as a USB device It is a convenient, flexible and easy-to-use open source electronic prototyping platform, including hardware and software. It is suitable for artists, designers, hobbyists and friends who are interested in ""interaction"". It can perceive the environment through sensors, and feedback and affect the environment by controlling lights, motors and other devices. The microcontroller on the board can write programs through the programming language, compile it into a binary file, and burn it into the microcontroller. Technical parameter: Processor: AT91SAM3X8EA Working voltage: 3.3V Input voltage: 7-12V Input voltage: (limit) 6-20V Digital I/O Ports: 54 (12 PWM outputs) Analog input pins: 12 Analog output pins: 2 (digital-to-analog conversion) The total current of the DC output of the busbar I/O port: 130mA 3.3V supply pin can provide: 800mA current 5V power pins can be together: 800mA current Internal Flash Capacity: 512KB SRAM96KB (two : 64KB and 32KB) Clock frequency: 84MHz Material: PCB colour: blue Package Contents: 1 x Development Board Only the above package content, other products are not included. Note: Light 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.