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1、Page13-16 Uploading an Arduino Sketch上传一个Arduino SketchTo show you how to upload code to your Arduino board,well show you a simple example.This is one of the most basic examples -it consists in blinking the on-board LED or digital pin 13 every second.为了向你展示如何在你的Arduino板子上上传代码，我们会给你看个简单的例子，这可是最简单的例子之

2、一主要每秒是LED灯闪烁或者数字引脚13次。1.Open your Arduino IDE.1.打开你的Arduino IDE。2.Go to File-Examples-Basics-Blink2.按照步骤 File（文件）-Examples（例子）-01.Basics（基础）-Blink（闪烁）By default,the Arduino IDE comes pre-configured for the Arduino UNO.Click the Upload button and wait a few seconds.默认情况下，Arduino UNO上的Arduino IDE会被预配置

3、。点击Upload（上传）按钮然后等待几秒钟。After a few seconds, you should see a Done uploading message.几秒钟之后，你将会看到一条完成上传的消息。This code simply blinks the on-board LED on your Arduino UNO (highlighted with red color). You should see the little LED turn on for one second, and turn off for another second repeatedly.这段代码会使你

4、的Arduino Uno板上的LED闪烁（用红色突出显示）。你应该会看到小LED打开一秒然后关闭一秒,并重复进行.Control an Output and Read an Input控制输出并读取输入An Arduino board contains digital pins, analog pins and PWM pins.Arduino板包含数字引脚、模拟引脚和PWM引脚。Difference between digital, analog and PWM数字引脚，模拟引脚和PWM引脚的区别In digital pins, you have just two possible stat

5、es, which are on or off. These can also be referred as High or Low, 1 or 0 and 5V or OV. For example, if an LED is on, then, its state is High or1 or 5V. If it is off, youll have low, or 0 or 0V.在数字引脚状态下，你只有两个可能的状态，打开或关闭。这些也可以称为高电平或低电平，1或0，5V或0V。例如，如果一个LED是打开的，那么，它的状态是高电平或1或5V。如果它是关闭的，将会是低电平或0或0V。In

6、 analog pins, you have unlimited possible states between 0 and 1023. This allows you to read sensor values. For example, with a light sensor, if it is very dark, youll read 1023, if it is very bright youll read 0 .If there is a brightness between dark and very bright, youll read a value between 0 an

7、d 1023.在模拟引脚中，在0和1023之间具有无限的可能状态。这允许你读取传感器值。例如，用光传感器，如果光线很暗，你会读取到的值为1023，如果光线很亮，你会读取到的值为0，如果光线介于很亮和很暗之间，你会读取到0到1023之间的值。PWM pins are digital pins, so they output either 0 or 5V. However these pins can output “fake” intermediate voltage values between 0 and 5V, because they can perform Pulse Width Mo

8、dulation (PWM). PWM allows to simulate varying levels of power by oscillating the output voltage of the Arduino.PWM引脚是数字引脚，因此它们输出0或5V。然而，这些引脚可以输出“假的“ 0到5V之间的中间电压值，因为它们可以执行”脉冲宽度调制“（PWM）。PWM允许通过振荡Arduino的输出电压来“模拟”不同的功率水平。Controlling an output输出控制To control a digital output you use the digitalWrite() f

9、unction and between brackets you write, the pin you want to control, and then HIGH or LOW.你使用digitalWrite（）函数来控制数字输出，并在括号之间写下要控制的引脚和高低电平。To control a PWM pin you use the analogWrite() function and between brackets you write the pin you want to control and a number between 0 and 255.你使用analogWrite（）函

10、数来控制PWM引脚，并在括号之间写入要控制的引脚和0到255之间的数字。Reading an input输入读取To read an analog input you use the function analogRead() and for a digital input you use digitalRead().使用函数analogRead（）来读取模拟输入；对于数字输入，请使用函数digitalRead（）。The best way for you to learn Arduino is practising. So, choose a project and start buildi

11、ng something.学习Arduino的最佳方法就是练习。 所以，选择一个项目并开始做出一些东西吧。Traffic Lights交通信号灯View code on GitHub请在GitHub上查看代码Click here点击这里查看Introduction介绍In this project youre going to build a traffic lights system:在这个项目中，你将建立一个交通信号灯系统：l There are 3 LEDs with different colors (green, yellow and red) to mimic the traffic lights for the cars.用三种不同颜色的灯（绿色，黄色和红色）模拟汽车的交通信号灯l There are 2 LEDs with different colors (gre