You're reading from Raspberry Pi 3 Projects for Java Programmers

Product typeBook

Published inMay 2017

Reading LevelIntermediate

PublisherPackt

ISBN-139781786462121

Edition1st Edition

Languages

Java

Tools

Raspberry Pi

Concepts

Single Board Computers

Authors (3):

Rajdeep Chandra

John Sirach

Pradeeka Seneviratne

View More author details

Adding the light-dependent resistor to the setup

As mentioned earlier, the Raspberry Pi is unable to read analog values. We are going to add the resistor using a RC circuit, as explained earlier. Here, we need the LDR, capacitor, and a 4.7 Kohm fixed resistor. The fixed resistor is used to make sure that when the LDR is completely saturated, which means that there is no resistance anymore, we won't fry our Raspberry Pi. An extra thing we need to keep in mind is that the Raspberry Pi is a 3.3V device. This means that in this schema, we will be using the 3.3V output because we will be reading the input on the Raspberry Pi pin, which cannot be higher than 3.3V.

Here is an image that shows how to attach this RC circuit to the Raspberry Pi:

Shut down the Raspberry Pi and disconnect the power. Let's first take a quick look at the capacitor. The one we are using is an electrolytic capacitor, which has a positive...

The rest of the page is locked

You have been reading a chapter from

Raspberry Pi 3 Projects for Java Programmers

Published in: May 2017Publisher: PacktISBN-13: 9781786462121

Authors (3)

Rajdeep Chandra

Other recommended products

Related to this chapter

Hands-On Business Intelligence with DAX

This book follows a step-by-step explanation of essential concepts, practical examples, and self-assessment questions. You will begin by learning the basics of DAX, along with important concepts such as evaluation contexts and data modeling, before moving on to more advanced topics such as query optimization.

BookJan 2020402 pages

ESP8266 Robotics Projects

The ESP8266 WiFi module is a self-contained SOC with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network. This book is all about robotics projects based on the original ESP8266 microcontroller board and some variants of ESP8266 boards. You will learn how to use a different type of chassis kits, motors, motor drivers, power supplies and distribution boards, sensors, and actuators to build the robotics projects that can be controlled via WiFi. In addition to it, you will understand how to use line sensors, ArduiCam, Wii Remote, Wheel encoders, and Gripper kit to build more specialized robots.

BookNov 2017210 pages

Hands-On Internet of Things with Blynk

Blynk is gaining a lot of popularity among the masses as it is simple and portable to use, and it comes under mobile applications and devices. The book will introduce you to Blynk and will demonstrate how to setup the environment for building IoT applications. You will then deep dive into concepts like building a notification widget, display widget, and controller widgets. Besides this, you will learn how to build a Blynk server and then create a Blynk application on it. You will have hands-on experience in building IoT applications using Blynk.

BookMay 2018271 pages

Microsoft Power BI Quick Start Guide

Microsoft Power BI is a cloud-based service that helps you easily visualize and share insights from your organization's data. This book will get you started with Business Intelligence using the Power BI tool, covering essential concepts like installation, building basic dashboards and visualizations to make your data come to life.

BookJul 2018202 pages

Internet of Things Projects with ESP32

ESP32 is a low-cost MCU with integrated WiFi and BLE that is capable of empowering IoT. It also helps in exchanging information among various connected devices. This book will help you build your own IoT weather station, IoT Monitoring system and a game project using ESP32 and LCD. By the end of this book, you will be well-versed with creating amazing ESP32 chip-based IoT projects.

BookMar 2019252 pages

Java Data Analysis

Data analysis is a process of inspecting, cleansing, transforming, and modeling data with the aim of discovering useful information. Java is one of the most popular languages to perform your data analysis tasks. This book will show you the fundamentals of data analysis tasks using Java - ranging from data retrieval to complex analysis. You will learn the statistical data analysis techniques and implement them using the popular Java APIs and libraries. You’ll analyze different kinds of data including numerical data, text and multimedia, and use the power of the Java-based libraries to create insightful and easy-to-understand plots and graphs.

BookSep 2017412 pages

Hands-On Robotics Programming with C++

C/C++ is one the legacy programming language for Robotics Programming. This book will help you understand and build complexly structured robots and implement various C/C++ programming libraries in it.

BookMar 2019312 pages

Internet of Things with Raspberry Pi 3

Internet of Things (IoT) is currently a growing trend in the technology space, and Raspberry Pi is the perfect board to get started with building IoT projects. Applications of IoT are the basis of smart homes and when scaled up, we can drive smart cities and achieve manufacturing automation. This book covers many powerful features of Raspberry Pi which will help in building a weather station, facial recognition systems, and security surveillance systems. Additionally, you'll also learn to use Raspberry Pi, sensors and cloud, in a practical way.

BookApr 2018248 pages

DIY Microcontroller Projects for Hobbyists

This book is a project-based introduction if you’re new to electronics, microcontroller boards, and C and C++ programming that will have you quickly building practical and real-world projects. Throughout the book, you'll discover how to connect easy-to-use sensors and displays to microcontroller boards and learn how to test them.

BookJul 2021320 pages

Raspberry Pi Computer Vision Programming

You will learn the basics of hardware and software required for image processing and computer vision with Raspberry Pi and Python 3. You will have a look at all the major image processing, manipulation, and computer vision techniques and algorithms in detail using engaging examples. You will build a lot of real-life computer vision applications.

BookJun 2020306 pages5

Practical Python Programming for IoT

Practical Python Programming for IoT is a practical guide to building electronic circuits and detailed code examples for advanced IoT applications using a Raspberry Pi and Python. It highlights key concepts such as GPIO interfacing, structuring Python-based IoT applications and alternative methods to control electronics over the internet.

BookNov 2020516 pages

Wearable-Tech Projects with the Raspberry Pi Zero

Are you interested in wearable-tech and gadgets? Do you want to know more about how you can use the Raspberry Pi Zero computer? This book has a series of projects which will show you some of the possibilities with wearable-tech and the Pi Zero, guiding you through each one from start to finish. The Raspberry Pi Zero is a revolutionary product, designed and manufactured in the United Kingdom by the Raspberry Pi Foundation. This tiny computer provides powerful features, in spite of being such a small size; it measures a mere 65 x 35 mm! One of the advantages of its tiny size is that it is ideal to be used in wearable-tech projects.

BookJul 2017184 pages

Personalised recommendations for you

Based on your interests and search pattern

Architectural Patterns and Techniques for Developing IoT Solutions

This book covers all the patterns and considerations that give you both the power and flexibility to build scalable, secure, and performant IoT solutions by combining various patterns in interesting ways. It also lists the benefits of combining IoT with technologies like blockchain, 3D-printing, 5G, Generative AI, quantum computing, and LLMs.

BookSep 2023304 pages

Arduino Data Communications

Arduino Data Communication focuses on IoT’s Internet aspect, guiding you in setting up your own infrastructure for storing and managing the data collected from sensors. This book goes beyond microcontroller basics, equipping you with the knowledge essential for building real-world projects.

BookNov 2023286 pages5

Arduino IoT Cloud for Developers

From fundamental principles to advanced techniques, this comprehensive book equips you with the knowledge and skills needed to design and deploy IoT applications seamlessly. Explore cloud integration, best practices, and real-world projects to harness the full potential of IoT application development with the Arduino IoT Cloud.

BookNov 2023402 pages

The Azure IoT Handbook

Building IoT Systems with Azure IoT is a comprehensive introduction for those who are new to the Internet of Things and looking to get up to speed in no time. This book will teach you how to create and develop IoT solutions with intelligent edge-to-cloud technologies in the Azure cloud.

BookDec 2023248 pages