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332 Making Things Move

5. Now you need to figure out to which port on your computer your Arduino is
hooked up. Open the Device Manager by clicking the Start menu, right-clicking
Computer, and choosing Properties. Click Device Manager in the upper-left
corner. Expand Ports (COM & LPT). The Arduino will appear as a USB serial
port and will have a name like COM3 or COM4, as shown in Figure A-4. Now
go back to the Arduino application and choose that port from the Tools | Serial
Port menu.

Now everything is set up, and your Arduino and your computer can communicate
with each other.

NowMakeItBlink

To get the Arduino to do anything for you, you need to give it instructions in a
language it understands. These instructions are written in a special code language

FIGURE A-4 Identifying the serial port