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首页Arduino Uno进阶指南:日常电子应用实战项目
Arduino Uno进阶指南:日常电子应用实战项目
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更新于2024-07-18
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"《Arduino Applied》是一本面向初学者的项目导向书籍,旨在帮助读者扩展他们的Arduino Uno技能,并了解电子应用在日常生活中的运作。作者 Neil Cameron 针对那些拥有Arduino Uno入门套件但缺乏编程经验的读者设计,以及对电子设备工作原理感兴趣的人群。 本书涵盖了丰富的主题,首先从设置Arduino Uno和其编程环境开始,让读者熟悉这个微控制器平台的基础。通过一系列实践项目,包括制作简单的LED闪烁、利用GPS进行路径追踪、以及将数据上传到互联网,读者能够逐步学习如何构建复杂的电路,将其分解并逐步增强理解。这些项目涉及了多种技术,如传感器的应用、数据收集与显示、蓝牙和无线通信、数字图像捕捉、GPS定位、电机控制、颜色和声音处理、机器人制作,甚至实现互联网接入,无需事先具备电子专业知识,因为每个主题都配以详尽的描述和使用Arduino Uno的实际示例。 阅读本书,读者不仅能掌握基础电子应用,还能了解到电子设备在现代生活中的实际运用,如家居自动化、物联网设备的搭建等。此外,书中还强调了动手操作和理论结合的重要性,鼓励读者在实践中深化理解,从而提升自己的电子技能。 《Arduino Applied》作为一本综合性的教程,不仅提供了技术指导,也体现了TechnologyInAction™的理念,旨在将复杂的技术以易于理解的方式呈现给读者,使他们能够在日常生活中应用所学知识。通过本书的学习,读者将具备设计和构建基于Arduino Uno的实用电子项目的实力,为电子科技世界打开一扇新的大门。"
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Projects covered in the book include and extend those in Arduino
Uno starter kits to increase knowledge of microcontrollers in electronic
applications. Many of the projects are practically orientated, such as
information displays, GPS tracking, RFID entry systems, motion detector
alarms, and robots. Building projects helps you understand how many
electronic applications function in everyday life. Examples include flashing
numbers on a screen, a scrolling message in the train station, electronic
tags on items in a shop or books in the library, a desktop weather station,
Bluetooth communication with a mobile phone, digital sound systems,
and an obstacle-avoiding robot vacuum cleaner.
Each example in the book is accompanied by code and a description
of that code, which helps you learn how to program a microcontroller and
a computer, which is a highly valuable skill. The Arduino programming
language is C, which is widely used. Learning to program an Arduino
provides the framework for other computer programming languages.
Throughout the book, schematic diagrams were produced with Fritzing
software (www.fritzing.org), with an emphasis on maximizing the clarity
of component layout and minimizing overlapping connections. The
authors of the libraries used in the book are identified in each chapter,
with library details covered in the appendix. There are several approaches
to structuring sketches, and the approach taken in the book is to declare
variables at the start of the sketch, rather than throughout the sketch.
All the code used in the book is available to download from github.
com/Apress/arduino-applied. The Arduino programming environment
and libraries are constantly being updated, so information on the
consequences of those updates on the content of the book is also available
at github.com/Apress/arduino-applied.
Many chapters of the book are stand-alone, so that you can delve
into a section of the book rather than having to start from the beginning,
while several chapters utilize information from earlier chapters to build
a project. You learn how to break down a complex project into smaller
PrefaCePrefaCe
xix
projects, just as each chapter addresses a different topic, to then be able to
build and enhance the initial project.
If you bought, or are thinking about buying, an Arduino Uno starter
kit that contains a few LEDs, a variety of sensors, with some switches and
resistors, then this book is for you. If you want to build electronics projects
with a microcontroller, then the comprehensive range of topics covered in
the book provides the detailed instructions to get started.
PrefaCePrefaCe
1
© Neil Cameron 2019
N. Cameron, Arduino Applied, https://doi.org/10.1007/978-1-4842-3960-5_1
CHAPTER 1
Introduction
The Arduino Uno provides the framework to learn about electronics, and to
understand and build electronic devices. The Arduino Uno can monitor an
environment with sensors, drive LED message boards, generate sound and
light patterns, take and display digital photos, communicate by Bluetooth
or wirelessly with other electronic devices, communicate by Wi- Fi to the
Internet, and record data on the route, speed, and altitude of a trip with GPS.
Arduino Uno
The Arduino Uno R3 (see Figure1-1) contains the ATmega328P
microcontroller to carry out programmed instructions and memory
to store data. The Arduino is powered through a DC input or a USB
connection, which is also used to upload instructions and communicate
with a computer or laptop. An ATmega16U2 chip manages USB (Universal
Serial Bus) to serial communication.
The power pins allow 5V (5 volts) or 3.3V and ground (GND) to
connect other devices. Pins 0 and 1 are for transmitting and receiving
serial data from other devices. Pins 2 to 13 are digital input and output,
which input or output 5V for a digital one or 0V for a digital zero. Several
output pins vary the time that a pin state is 5V to emulate voltages between
0V and 5V.The analog pins, A0 to A5, measure voltages between 0V and
5V and convert analog signals to digital values (ADC). Pins A4 and A5
2
can also communicate with other devices, as can pins 10 to 13, but using
different communication systems, I2C and SPI respectively, than the
USB connection. Three LEDs (light-emitting diode) indicate power (ON),
transmitting (TX), and receiving (RX), with a fourth LED connected to pin 13.
The Reset button is used to restart the microcontroller.
The functionality of the Arduino Uno enables a comprehensive range
of projects to be developed, which are described throughout the book.
Several of the terms—such as ADC, I2C, and SPI—may mean little to you
just now, but they are explained in the relevant chapters.
Figure 1-1. Arduino Uno
Chapter 1 IntroduCtIon
3
Breadboards
The solderless breadboard contains columns of connected sockets for
positioning electronic components to create a circuit and for connecting to
the Arduino (see Figure1-2). The two rows along the length (left to right)
of the breadboard are used to connect to power (red) or ground (blue)
lines in a circuit. Holes in each short column (green) of the breadboard
are connected together, but the columns are not connected, so that two
components each with one “leg” in the same green column are connected
together. The middle area in the breadboard separates the breadboard into
two unconnected halves. Breadboards come in a variety of sizes.
Figure 1-2. Breadboard
The term breadboard originates from radio amateurs attaching
fixing points to a wooden breadboard and then connecting electronic
components to the fixing points.
For example, Figure1-3 shows a circuit with an LED, a 100Ω resistor,
and a 3V battery. The positive or red terminal of the 3V battery is
connected to the long leg of the LED, as the relevant component legs are
in the same short column. Likewise, the short leg of the LED is connected
to the “top” end of the 100Ω resistor, but not to the “bottom” end of the
Chapter 1 IntroduCtIon
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