# Source: https://learn.adafruit.com/adafruit-arduino-lesson-1-blink.md

# Arduino Lesson 1. Blink

## Overview

In this lesson, you will learn how program your Arduino to make the Arduino's built-in LED blink.

![](https://cdn-learn.adafruit.com/assets/assets/000/002/141/medium800/learn_arduino_overview.png?1396779914)

- [Next Page](https://learn.adafruit.com/adafruit-arduino-lesson-1-blink/parts.md)

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### Adafruit METRO 328 Fully Assembled - Arduino IDE compatible

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We sure love the ATmega328 here at Adafruit, and we use them&nbsp;_a lot_&nbsp;for our own projects. The processor has plenty of GPIO, Analog inputs, hardware UART SPI and I2C, timers and PWM galore - just enough for most simple projects. When we need to go small, we use a <a...></a...>

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This here is your standard A-B USB cable, for USB 1.1 or 2.0. Perfect for connecting a PC to your Arduino, USBtinyISP (among other things).  
  
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[Related Guides to the Product](https://learn.adafruit.com/products/62/guides)

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