Fitting of DIY， great for Arduino DIY project， exercise your hand and brain.

Features:
ATmega328 microcontroller.
USB chip: ATMEGA16U2/ATMEGA32U2.
Digital I/O input / output 0~13V; Analog I/O input / output 0~5V.
Support ISP download: Input voltage: connecting USB interface of PC， no require of external power， external power supply 5~9V.
DC voltage input; Output voltage: 5V; DC voltage output: 3.3V.

Specifications:
Color：Blue + Black + Multi-Colored
Material：Plastic + iron
Weight: 128g / 4.51oz
Size: 10 * 6 * 3 cm / 2.95 * 2.17 * 0.39in ( L * W * H )

Packing List:
1 * UNO R3 motherboard
1 * Breads board (length: 8cm， width: 5.5cm)
1 * USB cable (53cm)
30 * Breadboard cables
5 * LEDs yellow
5 * LEDs red
5 * LEDs green