Internet of Things with 8051 and ESP8266 provides a platform to get started with the Internet of Things (IoT) with 8051. This book describes programming basics and how devices interface within designed systems. It presents a unique combination of 8051 with ESP8266 and I/O devices for IoT applications supported by case studies to provide the solutions to real-time problems. The programs and circuits have been tested on real hardware and explore different areas in IoT applications. Divided into four sections, it explains the customized boards for IoT applications followed by the means by which 8051 and ESP8266 interface with I/O devices. It spans levels from basic to advanced interfacing with special devices, server design, and data logging with different platforms.

Features:

Covers how I/O devices interface with 8051 and ESP8266
Explains the basic concepts of interfacing complexity using applications with examples
Provides hands-on practice exercises with 8051 and ESP8266 for IoT applications
Discusses both case studies and programming tests on real hardware during industrial and student projects
Reviews the integration of smart devices with IoT

Internet of Things with 8051 and ESP8266 is intended for senior undergraduate and graduate students in electrical and electronics engineering, but anyone with an interest in the professional curriculum of electrical and electronics engineering will find this book a welcome addition to their collection.

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Yes, you can access Internet of Things with 8051 and ESP8266 by Anita Gehlot, Rajesh Singh, Praveen Kumar Malik, Lovi Raj Gupta, Bhupendra Singh in PDF and/or ePUB format, as well as other popular books in Computer Science & Computer Networking. We have over one million books available in our catalogue for you to explore.

Information

Publisher

CRC Press

Year

2020

ISBN

9781000258707

Edition

Topic

Computer Science

Subtopic

Computer Networking

Index

Computer Science

Section B

Interfacing of 8051 Microcontroller and NuttyFi/ESP8266 with I/O devices

5 Interfacing of 8051 and NuttyFi/ESP8266 with LED

Light Emitting Diode (LED) is semiconductor source of illumination that emits light once current start flowing through it. Once an acceptable current is applied to the leads, negatrons area unit able to combine with electron holes and emits energy within the photons. The color of emitted energy is decided by the band gap of the semiconductor.

Most of the LEDs are made of a spread of inorganic materials of semiconductor. Table 5.1 shows the colors with different wavelength and material.

TABLE 5.1
LED Color with Respect to Semiconductor Material
Color	Semiconductor Material	Wavelength [nm]	Voltage Drop [ΔV]
Infrared	Gallium arsenide (GaAs) Aluminum gallium arsenide (AlGaAs)	λ > 760	ΔV < 1.63
Red	Aluminum gallium arsenide (AlGaAs) Gallium arsenide phosphide (GaAsP) phosphide (AlGaInP)	610 < λ < 760	1.63 < ΔV < 2.03
Orange	Gallium arsenide phosphide (GaAsP) Aluminum gallium indium phosphide (AlGaInP)	590 < λ < 610	2.03 < ΔV < 2.10
Yellow	Gallium arsenide phosphide (GaAsP) Aluminum gallium indium phosphide (AlGaInP)	570 < λ < 590	2.10 < ΔV < 2.18
Green	Aluminum gallium indium phosphide (AlGaInP) Aluminum gallium phosphide (AlGaP) Indium gallium nitride (InGaN)	500 < λ < 570	1.9^[93] < ΔV < 4.0
Blue	Zinc selenide (ZnSe) Indium gallium nitride (InGaN) Synthetic sapphire, Silicon carbide (SiC)	450 < λ < 500	2.48 < ΔV < 3.7
Violet	Indium gallium nitride (InGaN)	400 < λ < 450	2.76 < ΔV < 4.0
Ultraviolet	Indium gallium nitride (InGaN) (385–400 nm) Diamond (235 nm) Boron nitride (215 nm) Aluminum gallium nitride (AlGaN)	Λ < 400	3 < ΔV < 4.1
Purple	Dual blue/red LEDs, blue with red phosphor, or white with purple plastic	Multiple types	2.48 < ΔV < 3.7
White	Cool/Pure White: Blue/UV diode with yellow phosphor Warm White: Blue diode with orange phosphor	Broad spectrum	2.8 < ΔV < 4.2

The V-I characteristic of a LED is analogous to a diode, which implies that a tiny low amendment i...

Cover
Half Title
Title Page
Copyright Page
Contents
Preface
Author’s Biographies
SECTION A Basics of 8051 Microcontroller and IoT
SECTION B Interfacing of 8051 Microcontroller and NuttyFi/ESP8266 with I/O devices
SECTION C Interfacing of 8051 Microcontroller and NuttyFi/ESP8266 with Special Devices
SECTION D Case Study Based on Data Logger to Cloud Server
Index