Brand N/A Model TJ UNO R3 Quantity 1 Color Multicolored Material Immersion alloy plate Features The pin change: 2=I2C pin are added next to the AREF (SDA and SCL it the same as Analog 4 and 5 no need other I2C interface); And 2-pin are added next to the RESET one is IOREF to let the expansion board adapt the on board voltage they just show the on board voltage the other is standby occupied pin; More stable RESET circuit the RESET button is moved to the corner of board next to the USB interface more convenient to press; ATmega16U2 replaces the 8U2 it is serviced for USB interface chip to let the UNO analog USB HID such as MIDI / Joystick / Keyboard Specification Summary Microcontroller: ATmega328; Operating Voltage: 5V; Input Voltage (recommended): 7~12V; Input Voltage (limits): 6~20V; Digital I/O Pins: 14 (of which 6 provide PWM output): Analog Input Pins: 6; DC Current: per I/O pin 40mA; DC current for 3.3V pin: 50mA; Flash Memory: 32KB (ATmega328) of which 0.5 KB used by bootloader SRAM; 2KB (ATmega328) EEPROM 1KB (ATmega328) Clock Speed: 16MHz Application Arduino starter kit singlechip set Other A product for Arduino that works with official Arduino boards. English Manual/Spec Please refer to: http://arduino.cc/en/Main/Software Packing List 1 x UNO R3 development board 1 x Expansion board + small breadboard 1 x High grade breadboard 5 x Red light LEDs 5 x Yellow light LEDs 5 x Green light LEDs 10 x Resistors 10K 10 x Resistors 1K 10 x Resistors 220R 1 x 1x74HC595N 1 x Active buzzer 1 x Passive buzzer 1 x 1-digital nixie tube 1 x 4-digital nixie tube 10 x Buttons 3 x Light dependent resistors 1 x Adjustable resistor 1 x LM35 temperature 1 x Infrared receiver 1 x Flame sensor 2 x Ball switch 1 x Remote control (2 x AG10 batteries included) 1 x 2.6" 1602 LCD 1 x PS2 rocker 1 x Stepping motor (24cm-cable) 1 x Stepping motor drive board 1 x Servo (9g / 26cm-cable) 1 x RGB module 1 x Relay module 30 x Bread cables (10cm / 11cm) 10 x Dubond cables (31cm) 1 x 2.54 pin 1 x USB cable (60cm) 1 x 6 x 5 AA batteries case (16cm-cable) 1 x Box