Raspberry Pi_Eng_19.0 Chapter 19 System Monitoring

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Chapter’s Main Topics

In order for the system to operate properly, the basic resources used by the system must be sufficiently secured. The person in charge of operating the system should always check whether the system is operating normally, and if not, check to see what the problem is and take action. Here we will look at how to check the current state of the various resources in the Raspberry Pi system.
 
It includes descriptions on the following topics:
■    CPU, memory and task monitoring
■    Monitoring storage device
■    Monitoring “/porc” folder and process information

Raspberry Pi_Eng_18.0 Chapter 18 Remote Connection

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Chapter’s Main Topics

This chapter describes the various ways to connect to and work with a remote Raspberry Pi system. You can connect to the remote Raspberry Pi system to issue necessary commands in the remote system, or you can simply use the data that the remote system has.

It includes descriptions on the following topics:

■ Overview of remote connection
■ Remote Terminal Connection
■ Remote Desktop GUI connection
■ Remote drive ccnnecting

Raspberry Pi_Eng_03.9.3 Raspberry Pi Dedicated Camera

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3.9.3 Raspberry Pi Dedicated Camera

Raspberry Pi Foundation has released a dedicated camera for Raspberry Pi. The recently released camera uses the Sony IMX219 sensor, which can shoot up to 8 megapixels (8MP), supports still capture, and supports 1080p30, 720p60 and VGA90 video recording. This camera supports raw capturing and can also take pictures in JPEG, PNG, GIF, BMP, uncompressed YUV, and uncompressed RGB format. This camera can also record video in H.264, baseline, main and high-profile formats. Currently available cameras include a normal visible light camera and an infrared camera. This camera can be connected to the CSI port on the main board of Raspberry Pi by ribbon cable.

Raspberry Pi_Eng_02.0 Chapter 2 Hardware of Raspberry Pi

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Chapter 2 Hardware of Raspberry Pi

Chapter’s Main Topics

Raspberry Pi is very small, inexpensive and relatively powerful. Here this chapter describes the hardware configuration of Raspberry Pi and their characteristics.

It includes descriptions on the following topics:
■ Hardware configuration of Raspberry Pi

■ SoC, CPU and memory

■ SD card slot

■ Power supply

■ Video and Audio devices

■ USB port

■ Network device

■ GPIO

Raspberry Pi_Eng_01.0 Chapter 1 Overview of Raspberry Pi

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Chapter 1 Overview of Raspberry Pi

Chapter’s Main Topics

This chapter describes the birth background and development history of Raspberry Pi, and explains why Raspberry Pi has become popular worldwide now.

It includes descriptions of the following subjects:
■ Birth of Raspberry Pi

■ Development history of Raspberry Pi

■ Features of Raspberry Pi

Raspberry Pi_Eng_00.1 Preface

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Preface

Main Topics

First, here introduces the motive with which the author wrote this book. Next, this provides an overview of the overall structure of the book and summarizes the contents in each chapter and provides guidance on the level of content covered.

It includes descriptions on the following topics:
■ Motive of writing this book

■ What this book covers

■ Level of contents covered in this book

■ Conventions used in this book

Raspberry Pi_Eng_25.8.3 Utilizing Digital DHT11 Humidity/Temperature Sensor

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25.8.3 Utilizing Digital DHT11 Humidity/Temperature Sensor

25.8.3.1 Feature of the Sensor

Here, we will use a module that integrates DHT11 sensor and other necessary components on a small PCB as shown below. The DHT11 sensor is equipped with resistive humidity measurement components, NTC temperature measurement components, and a high-performance 8-bit microcontroller and provides precise digital signal output. The DHT11 sensor originally has four wires, but this module has three wires.