Raspberry Pi Retail Applications: Transform Your Business with a Low-Cost Single-Board Computer

Table of Contents
About the Authors
About the Technical Reviewer
Chapter 1: Understanding the Applications of Automation in Retail
	What Is Industry 4.0?
	What Is the Internet of Things (IoT)?
		Which Technologies Make the Internet of Things More Accessible in the Retail Industry?
		Amazon Go Grocery Store: Ambitiously Implementing Automation
	Why Choose a $35 Single-Board Computer to Automate a Retail Business?
	Identify the Targets for Business Automation
		To Automate or Not to Automate?
			Choosing Tools
			Choosing Technologies
Chapter 2: People Counting
	Problem Overview
	The Business Impact
	Related Knowledge
		Computer Vision and Its Applications
	Approaches to Object Detection
	Implementing Object Detection
		Install a 64-bit Raspberry Pi OS on Raspberry Pi 4
			Using the Raspberry Pi Imager
		Install the Necessary Packages
		Execute People Counting Code with a Pretrained MobileNet SSD Model
		Train and Optimize Your Own Neural Network Model
	Pro Tips
	Summary
Chapter 3: Vending Machine
	Problem Overview
	Business Impact
	Related Knowledge
		Decide on PCB Manufacturer Beforehand
		Determine the Interfaces You Need
		Look at Third-Party Open Source Designs for Your elements
		Look at How Other People Have Solved the Same Problem
		Decide on Your Form Factor
		Determine the Location of Connectors and Headers
		Take Special Care of Heatsinks and Cooling Elements
	Implementation
		Implement Servo Control with Raspberry Pi 4
		Implement a Simple Web Server with Flask
		Add a PayPal Payment Processor
	Pro Tips
	Summary
Chapter 4: Interactive Touchscreen Directory
	Problem Overview
	Business Impact
	Related Knowledge
	Implementation
		Basic Tkinter Usage
		Build an Interface with the PAGE GUI Generator
			Install PAGE GUI Generator
			Create the UI with Tkinter Widgets in PAGE
			Write Program Logic in Python
	Pro Tips
	Summary
Chapter 5: Voice Interaction Drive-through Self-service Station
	Problem Overview
	Business Impact
	Related Knowledge
		How Does Deep Learning Work with Speech Recognition?
		Online Speech-Recognition Service Providers
		Offline Speech Recognition Frameworks
	Implementation
		Use the Pretrained Picovoice Model for Lights Control
		Train a New Speech-to-Intent Model for Ordering Fast Food
		Combine the New Speech-to-Intent Model with the Text-To-Speech Engine
	Pro Tips
	Summary
Chapter 6: Employee Attendance Management System
	Problem Overview
	Business Impact
	Related Knowledge
		The Fingerprint Sensor
		The PIR Motion Sensor
		The Software for Interfacing with the Sensor and Storing the Data
	Implementation
		Wire the Modules
		Install the Software and Register the Fingerprints
		Combining the Motion Sensor with the Fingerprint Sensor
	Pro Tips
		Using a SQL Database
		What Is SQL?
		SQL vs. Excel
		What Is SQL in the Cloud?
		A Dedicated Raspberry Pi 4 Hat with a Fingerprint Sensor
	Summary
Chapter 7: Advertisement Display
	Problem Overview
	Business Impact
	Related Knowledge
		What Is (Docker) Container?
		Container Orchestration
		Balena.io for Container Orchestration
	Implementation
		Install BalenaOS
		Deploy Container with Balena Dash to Your Device
		Set Up the Dashboard to Display Photos/Videos
	Pro Tips
	Summary
Chapter 8: Cluster for a Web Application Hosting
	Problem Overview
	Business Impact
	Related Knowledge
		Main Benefits of Running a Cluster with Kubernetes
		Deploying Kubernetes on the Edge with MicroK8s
	Implementation
		Install Ubuntu Server 20.04 on Two Raspberry Pi 4s
		Install MicroK8s on Two Raspberry Pi 4s Running Ubuntu Server 20.04
		What Version of Kubernetes Is Being Installed?
			Discovering MicroK8s
		Deploy a Web Application to a Cluster
			Persistent Volume and Persistent Volume Claim
			Secrets
			Postgres
			Flask
			Ingress
			Vue
			Scale and Add Nodes
	Pro Tips
	Summary
Chapter 9: Summary and Tips on Practical Implementation
	Successful Implementations
		Raspberry Pi Vending Machine
		Interactive Touchscreen Directory for a Smart City
		Raspberry Pi as a Retail Product Display
		A Multimedia Toolkit for Museums, Visitor Centers, and More Running on the Raspberry Pi
		Pendulum Wave Machine: A Museum Exhibit
		Raspberry Pi 4 Cluster for Hosting a Raspberry Pi 4 Website
	Technical Know-Hows
		Use Virtual Network Computing (VNC) to Remotely Control Everything You Want to Execute on the Raspberry Pi
		IoT Integration Platform for the People-Counting Project
		Microphone Options for Speech Recognition
		Cluster Server Carrier Board
	Retail Business Digitalization
Index