Feature: 1. Fitting of DIY, great compatible with Arduino DIY project, exercise your hand and brain. 2. Great compatible with arduino diy. Specification: Fitting of DIY, great compatible with Arduino DIY project, exercise your hand and brain. Features: Great compatible with arduino diy. It comes with beautiful package, so it can be used as a good gift. Specifications: Form color: multicolored + transparent Material: PCB Battery: 1 * CR2025 (included) Weight: 560g / 19.75oz Size: 23.5 * 16.5 * 6cm / 9.25 * 6.5 * 2.36in ( L * W * H ) Packing List: 1 * UNO R3 main board 1 * Expansion board 1 * Breadboard (167 * 58mm) 1 * Mini breadboard (50 * 39mm) 5 * Green LED 5 * Yellow LED 5 * Red LED 20 * 1k resistor 20 * 10k resistor 20 * 220ohm resistor 1 * 74HC595N chip 1 * Passive buzzer 1 * Active buzzer 1 * 1 Digital tube 1 * 4 Digital tube 1 * 8*8 Dot matrix 4 * Button 3 * Photoresistors 1 * Potentiometer 1 * LM35 temperature sensor 1 * Infrared receiver 1 * Flame sensor 2 * Tilt sensor 1 * SMD components box 1 * Infrared remote controller 1 * 1602 LCD module 1 * Step motor(24cm/5V) 1 * ULN2003 drive board 30 * Jumper wires for breadboard 1 * 9g Servo(25cm) 1 * 9V Battery 1 * 9V battery box 10 * Male-to-Female Jumper Wires (20cm) 1 * USB cable(45cm) 1 * 40 pin header 1 * Box Package List: 1 * UNO R3 main board 1 * Expansion board 1 * Breadboard (167 * 58mm) 1 * Mini breadboard (50 * 39mm) 5 * Green LED 5 * Yellow LED 5 * Red LED 20 * 1k resistor 20 * 10k resistor 20 * 220ohm resistor 1 * 74HC595N chip 1 * Passive buzzer 1 * Active buzzer 1 * 1 Digital tube 1 * 4 Digital tube 1 * 8*8 Dot matrix 4 * Button 3 * Photoresistors 1 * Potentiometer 1 * LM35 temperature sensor 1 * Infrared receiver 1 * Flame sensor 2 * Tilt sensor 1 * SMD components box 1 * Infrared remote controller 1 * 1602 LCD module 1 * Step motor(24cm/5V) 1 * ULN2003 drive board 30 * Jumper wires for breadboard 1 * 9g Servo(25cm) 1 * 9V Battery 1 * 9V battery box 10 * Male-to-Female Jumper Wires (20cm) 1 * USB cable(45cm) 1 * 40 pin header 1 * Box