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Brand No Model UNO R3+ Quantity 1 Color Black + blue Material Nickel-gold plated board Features Arduino UNO R3 is a open source controller that easy to operate; The biggest different from Arduino UNO is USB to serial port part£¬ which use ATMega16U2 microcontroler Specification Pin change: add two I2C pin (SDA£¬ SCL£¬ just a copy of analog 4 and 5); Ass two pins next to Reset£¬ one is IOREF£¬ which let expansion board suitable for on-board voltage£¬ the other is for spare; Reset also moved to next to USB port; A8U2 is replaced by Tmega16U2£¬ which id for USB port chip£¬ let UNO analog USB HID£¬ such as MIDI / Joystick / Keyboard Application Learning set English Manual/Spec http://arduino.cc/en/Main/Software Other A product for Arduino that works w/ official Arduino boards Packing List 1 x uno R3 board 1 x Expansion board 1 x Bread board 65 x Jumper cables (long: 25cm£¬ short: 10cm) 1 x USB cable (62cm)