Arduino UNO R3 SMD Compatible Board with USB Cable, ATmega328P and CH340 USB Chip

If you are starting with Arduino, the Uno is the board most tutorials are written for. This SMD version follows the same R3 layout, so the sketches, libraries, and shields you find online will work on it as they are.

The board comes with a USB cable in the box, so there is nothing extra to buy. Plug it in, open the Arduino IDE, upload your sketch, and your first project can be running in a few minutes.

The difference from the older Uno is on the inside. The ATmega328P chip is the flat surface-mount type, and USB communication is handled by the CH340 chip. When you use the board, it feels the same.

With 14 digital pins and 6 analog inputs, there is enough room for most student and DIY projects, like line-follower robots, home automation, sensor displays, and small machines. You can power it from your computer’s USB port or from a 7-12V adapter if the project needs to run on its own.