The document discusses key characteristics to consider when selecting hardware for IoT projects, including data acquisition and control, data processing and storage, connectivity, and power management. It provides examples of microcontroller development boards like Arduino Uno and ESP8266-01, and single board computers like Raspberry Pi 4 and BeagleBone Black. The document advises determining requirements for sensors, output components, data protocols, and networking before selecting a microcontroller or single board computer as the core device. Security, ease of development, and other factors should also be considered.
INTRODUCTION TO INTERNET OF THINGS
Evolution of Internet of Things – Enabling Technologies – IoT Architectures: oneM2M, IoT World Forum (IoTWF) and Alternative IoT Models – Simplified IoT Architecture and Core IoT Functional Stack – Fog, Edge and Cloud in IoT
The Internet of Things (IoT) is a network of physical objects or "things" embedded with electronics, software, sensors, and network connectivity that allow these objects to collect and exchange data.
Why IoT?
With the development of technologies like M2M (machine-to-machine communication) and widespread of Internet, communication over long distance became possible.
This useful exchange of information across the globe with minimal human intervention led to an innovative concept called Internet of Things (IoT) where objects represent themselves as a digitally forming large network of connected devices that can communicate over the internet.
Components comprising IoT
IoT Hardware – These include sensors, micro-controller devices for control, servers, an edge or gateway.
IoT software – It includes mobile and web applications that are responsible for data collection, device integration, real-time analysis and application and process extension.
IoT Lifecycle
Collect: The life cycle of IoT starts with collecting data from different sources deployed in a particular region. These sources could be any sensors or device capable of transmitting data connected to a gateway. Data are efficiently collected and passed forward through a communication channel for analysis.
Communicate: This phase involves secure and reliable transfer of data. Routers, switches and firewall technologies play a vital role in establishing communication between devices. The Data is sent to the cloud or other data centers using the internet which is our major means of communication in IoT.
Analysis: This phase is an important part of the IoT lifecycle. In this phase data collected from different sensor devices are collected and analysed based on the use case to extract some useful output/information.
Action: This is the final stage of IoT lifecycle. Information obtained by the analysis of sensor data is acted upon and proper actions and measures are taken based on the analysis result.
INTRODUCTION TO INTERNET OF THINGS
Evolution of Internet of Things – Enabling Technologies – IoT Architectures: oneM2M, IoT World Forum (IoTWF) and Alternative IoT Models – Simplified IoT Architecture and Core IoT Functional Stack – Fog, Edge and Cloud in IoT
The Internet of Things (IoT) is a network of physical objects or "things" embedded with electronics, software, sensors, and network connectivity that allow these objects to collect and exchange data.
Why IoT?
With the development of technologies like M2M (machine-to-machine communication) and widespread of Internet, communication over long distance became possible.
This useful exchange of information across the globe with minimal human intervention led to an innovative concept called Internet of Things (IoT) where objects represent themselves as a digitally forming large network of connected devices that can communicate over the internet.
Components comprising IoT
IoT Hardware – These include sensors, micro-controller devices for control, servers, an edge or gateway.
IoT software – It includes mobile and web applications that are responsible for data collection, device integration, real-time analysis and application and process extension.
IoT Lifecycle
Collect: The life cycle of IoT starts with collecting data from different sources deployed in a particular region. These sources could be any sensors or device capable of transmitting data connected to a gateway. Data are efficiently collected and passed forward through a communication channel for analysis.
Communicate: This phase involves secure and reliable transfer of data. Routers, switches and firewall technologies play a vital role in establishing communication between devices. The Data is sent to the cloud or other data centers using the internet which is our major means of communication in IoT.
Analysis: This phase is an important part of the IoT lifecycle. In this phase data collected from different sensor devices are collected and analysed based on the use case to extract some useful output/information.
Action: This is the final stage of IoT lifecycle. Information obtained by the analysis of sensor data is acted upon and proper actions and measures are taken based on the analysis result.
internet of things(Architecture and components).pptxvikramkagitapu
The term IoT, or Internet of Things, refers to the collective network of connected devices and the technology that facilitates communication between devices and the cloud, as well as between the devices themselves
Internet of Things IoT is a system of interrelated computing devices where all the things, including every physical object, can be connected making those objects intelligent, programmable and capable of interacting with humans. As more and more data are generated each day, IoT and its potential to transform how we communicate with machines and each other can change the world. The user operates the smart home devices year in year out, have produced mass operation data, but these data have not been utilized well in the past. This project focuses on the development of home automation system based on internet of things which allows the user to automate all the devices and appliances of home and merge them to provide seamless control over every side of their home. The data can be used to predict the user's behavior custom with the development of a machine learning algorithm, and then the prediction results can be employed to enhance the intelligence of a smart home system. The designed system not only gives the sensor data but also process it according to the requirement, for example switching on the light when it gets dark and it allows the user to control the household devices from anywhere. The cloud is used to send the sensor data through Wi Fi module and then a decision tree is implemented which decides the output of the electronic devices also, it is used to achieve the power control and local data exchanging which provide the user interface, store all the information corresponding to the specific house, and query the function information of an individual home appliance. Prof. Madhu B R | Vaishnavi K R | Dushyanth N Gowda | Tushar Jain | Sohan Chopdekar ""IoT Based Home Automation System over Cloud"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-4 , June 2019, URL: https://www.ijtsrd.com/papers/ijtsrd24005.pdf
Paper URL: https://www.ijtsrd.com/engineering/computer-engineering/24005/iot-based-home-automation-system-over-cloud/prof-madhu-b-r
A smart switch to connect and disconnect electrical devices at home by using ...Mounika G
“A Smart Switch to Connect and Disconnect Electrical Devices at Home by Using Open Source Platform” has been developed by integrating features of all the hardware components and software used. Presence of every module has been reasoned out and placed carefully thus contributing to the best working of the unit. Secondly, using highly advanced Raspberry pi board and with the help of growing technology
The. Smart Switch is connected to internet via Wi-Fi TM, through a computer, smart phone, ... Switch server, which will open a configuration page to write the data of the user's ..... Source.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Android Based Switch Controlling Technique for LED BulbsUsing Bluetooth/Wi-Fi...IJRES Journal
This paper presents an efficient approach to switch on/off and control the intensity of an LED bulb from a remote place using Android Applications installed in a Smartphone. As LED household bulbs and lights are energy efficient, drop-in replacements for the incandescent lighting found in homes and offices. These lights produce a warm brightness while providing a significant cost savings over traditional lighting. Bluetooth & Wi-Fi modules are used simultaneously as an interface that make connection between Android Applicationand the LPC2148 controller by which the generated output can be viewed with the help of an LED bulb and control various other devices, based on the availability in particular areas.
Group 5:
Reymart John Aguho
Lawrence Valdez
Trishia Mae Salazar
Gayle Allyson Guitones
Dempster Winston Corpuz
Matthew Erickson Quinto
Marc Vincent Maneja
WSN Based Temperature Monitoring System for Multiple Locations in Industryijtsrd
Wireless sensor network technology has demonstrated a great potential for industrial, commercial, and consumer applications. Speci cally, in process monitoring and control, process data such as pressure, humidity, temperature, ow, level, viscosity, density and vibration intensity measurements can be collected through sensing units and transferred wirelessly to a control system for operation and management. Adopting WSNs for process monitoring and control provides great advantages over traditional wired system. In today's world we are facing with many di erent types of emergencies in the indoor environment. Response to such emergencies is critical in order to protect resources including human life and also we can save property from damage. This wireless sensor network for Temperature monitoring System which can report the emergency to the users in various forms, such as pop ups on a Computer screen, SMS on their cell phones and so on. Due to this exibility of reporting low cost wireless sensor network prepared for emergency response system of future. We are going to develop three wireless sensor nodes and we have to place in di erent position in the building using arduino board and we have to inform to the master node or monitoring node about the temperature available at each sensor node. While sending data to each and every sensor is very costly. Hence nodes are connected to WSN and their is only one node called 'Gateway' which collects the data from all other nodes and sends it to the cloud. Aditya Jogdand | Amit Chaudhari | Niranjan Kadu | Udaykumar Shroff ""WSN Based Temperature Monitoring System for Multiple Locations in Industry"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-4 , June 2019, URL: https://www.ijtsrd.com/papers/ijtsrd23124.pdf
Paper URL: https://www.ijtsrd.com/engineering/computer-engineering/23124/wsn-based-temperature-monitoring-system-for-multiple-locations-in-industry/aditya-jogdand
AI Pilot Review: The World’s First Virtual Assistant Marketing SuiteGoogle
AI Pilot Review: The World’s First Virtual Assistant Marketing Suite
👉👉 Click Here To Get More Info 👇👇
https://sumonreview.com/ai-pilot-review/
AI Pilot Review: Key Features
✅Deploy AI expert bots in Any Niche With Just A Click
✅With one keyword, generate complete funnels, websites, landing pages, and more.
✅More than 85 AI features are included in the AI pilot.
✅No setup or configuration; use your voice (like Siri) to do whatever you want.
✅You Can Use AI Pilot To Create your version of AI Pilot And Charge People For It…
✅ZERO Manual Work With AI Pilot. Never write, Design, Or Code Again.
✅ZERO Limits On Features Or Usages
✅Use Our AI-powered Traffic To Get Hundreds Of Customers
✅No Complicated Setup: Get Up And Running In 2 Minutes
✅99.99% Up-Time Guaranteed
✅30 Days Money-Back Guarantee
✅ZERO Upfront Cost
See My Other Reviews Article:
(1) TubeTrivia AI Review: https://sumonreview.com/tubetrivia-ai-review
(2) SocioWave Review: https://sumonreview.com/sociowave-review
(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
internet of things(Architecture and components).pptxvikramkagitapu
The term IoT, or Internet of Things, refers to the collective network of connected devices and the technology that facilitates communication between devices and the cloud, as well as between the devices themselves
Internet of Things IoT is a system of interrelated computing devices where all the things, including every physical object, can be connected making those objects intelligent, programmable and capable of interacting with humans. As more and more data are generated each day, IoT and its potential to transform how we communicate with machines and each other can change the world. The user operates the smart home devices year in year out, have produced mass operation data, but these data have not been utilized well in the past. This project focuses on the development of home automation system based on internet of things which allows the user to automate all the devices and appliances of home and merge them to provide seamless control over every side of their home. The data can be used to predict the user's behavior custom with the development of a machine learning algorithm, and then the prediction results can be employed to enhance the intelligence of a smart home system. The designed system not only gives the sensor data but also process it according to the requirement, for example switching on the light when it gets dark and it allows the user to control the household devices from anywhere. The cloud is used to send the sensor data through Wi Fi module and then a decision tree is implemented which decides the output of the electronic devices also, it is used to achieve the power control and local data exchanging which provide the user interface, store all the information corresponding to the specific house, and query the function information of an individual home appliance. Prof. Madhu B R | Vaishnavi K R | Dushyanth N Gowda | Tushar Jain | Sohan Chopdekar ""IoT Based Home Automation System over Cloud"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-4 , June 2019, URL: https://www.ijtsrd.com/papers/ijtsrd24005.pdf
Paper URL: https://www.ijtsrd.com/engineering/computer-engineering/24005/iot-based-home-automation-system-over-cloud/prof-madhu-b-r
A smart switch to connect and disconnect electrical devices at home by using ...Mounika G
“A Smart Switch to Connect and Disconnect Electrical Devices at Home by Using Open Source Platform” has been developed by integrating features of all the hardware components and software used. Presence of every module has been reasoned out and placed carefully thus contributing to the best working of the unit. Secondly, using highly advanced Raspberry pi board and with the help of growing technology
The. Smart Switch is connected to internet via Wi-Fi TM, through a computer, smart phone, ... Switch server, which will open a configuration page to write the data of the user's ..... Source.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Android Based Switch Controlling Technique for LED BulbsUsing Bluetooth/Wi-Fi...IJRES Journal
This paper presents an efficient approach to switch on/off and control the intensity of an LED bulb from a remote place using Android Applications installed in a Smartphone. As LED household bulbs and lights are energy efficient, drop-in replacements for the incandescent lighting found in homes and offices. These lights produce a warm brightness while providing a significant cost savings over traditional lighting. Bluetooth & Wi-Fi modules are used simultaneously as an interface that make connection between Android Applicationand the LPC2148 controller by which the generated output can be viewed with the help of an LED bulb and control various other devices, based on the availability in particular areas.
Group 5:
Reymart John Aguho
Lawrence Valdez
Trishia Mae Salazar
Gayle Allyson Guitones
Dempster Winston Corpuz
Matthew Erickson Quinto
Marc Vincent Maneja
WSN Based Temperature Monitoring System for Multiple Locations in Industryijtsrd
Wireless sensor network technology has demonstrated a great potential for industrial, commercial, and consumer applications. Speci cally, in process monitoring and control, process data such as pressure, humidity, temperature, ow, level, viscosity, density and vibration intensity measurements can be collected through sensing units and transferred wirelessly to a control system for operation and management. Adopting WSNs for process monitoring and control provides great advantages over traditional wired system. In today's world we are facing with many di erent types of emergencies in the indoor environment. Response to such emergencies is critical in order to protect resources including human life and also we can save property from damage. This wireless sensor network for Temperature monitoring System which can report the emergency to the users in various forms, such as pop ups on a Computer screen, SMS on their cell phones and so on. Due to this exibility of reporting low cost wireless sensor network prepared for emergency response system of future. We are going to develop three wireless sensor nodes and we have to place in di erent position in the building using arduino board and we have to inform to the master node or monitoring node about the temperature available at each sensor node. While sending data to each and every sensor is very costly. Hence nodes are connected to WSN and their is only one node called 'Gateway' which collects the data from all other nodes and sends it to the cloud. Aditya Jogdand | Amit Chaudhari | Niranjan Kadu | Udaykumar Shroff ""WSN Based Temperature Monitoring System for Multiple Locations in Industry"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-4 , June 2019, URL: https://www.ijtsrd.com/papers/ijtsrd23124.pdf
Paper URL: https://www.ijtsrd.com/engineering/computer-engineering/23124/wsn-based-temperature-monitoring-system-for-multiple-locations-in-industry/aditya-jogdand
AI Pilot Review: The World’s First Virtual Assistant Marketing SuiteGoogle
AI Pilot Review: The World’s First Virtual Assistant Marketing Suite
👉👉 Click Here To Get More Info 👇👇
https://sumonreview.com/ai-pilot-review/
AI Pilot Review: Key Features
✅Deploy AI expert bots in Any Niche With Just A Click
✅With one keyword, generate complete funnels, websites, landing pages, and more.
✅More than 85 AI features are included in the AI pilot.
✅No setup or configuration; use your voice (like Siri) to do whatever you want.
✅You Can Use AI Pilot To Create your version of AI Pilot And Charge People For It…
✅ZERO Manual Work With AI Pilot. Never write, Design, Or Code Again.
✅ZERO Limits On Features Or Usages
✅Use Our AI-powered Traffic To Get Hundreds Of Customers
✅No Complicated Setup: Get Up And Running In 2 Minutes
✅99.99% Up-Time Guaranteed
✅30 Days Money-Back Guarantee
✅ZERO Upfront Cost
See My Other Reviews Article:
(1) TubeTrivia AI Review: https://sumonreview.com/tubetrivia-ai-review
(2) SocioWave Review: https://sumonreview.com/sociowave-review
(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
Exploring Innovations in Data Repository Solutions - Insights from the U.S. G...Globus
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Experience our free, in-depth three-part Tendenci Platform Corporate Membership Management workshop series! In Session 1 on May 14th, 2024, we began with an Introduction and Setup, mastering the configuration of your Corporate Membership Module settings to establish membership types, applications, and more. Then, on May 16th, 2024, in Session 2, we focused on binding individual members to a Corporate Membership and Corporate Reps, teaching you how to add individual members and assign Corporate Representatives to manage dues, renewals, and associated members. Finally, on May 28th, 2024, in Session 3, we covered questions and concerns, addressing any queries or issues you may have.
For more Tendenci AMS events, check out www.tendenci.com/events
Climate Science Flows: Enabling Petabyte-Scale Climate Analysis with the Eart...Globus
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Into the Box Keynote Day 2: Unveiling amazing updates and announcements for modern CFML developers! Get ready for exciting releases and updates on Ortus tools and products. Stay tuned for cutting-edge innovations designed to boost your productivity.
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Spring Boot, Spring Cloud, Spring Core, Spring JDBC, Spring Security,
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Discover the essential features to incorporate in your Winzo clone app to boost business growth, enhance user engagement, and drive revenue. Learn how to create a compelling gaming experience that stands out in the competitive market.
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Field Employee Tracking System| MiTrack App| Best Employee Tracking Solution|...informapgpstrackings
Keep tabs on your field staff effortlessly with Informap Technology Centre LLC. Real-time tracking, task assignment, and smart features for efficient management. Request a live demo today!
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How Choreo enables the platformless experience.
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Unlocking Business Potential: Tailored Technology Solutions by Prosigns
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2. IoT device characteristics
As an IoT landscape develops, new devices and
platforms will be introduced. There are key
characteristics that are common to IoT devices that
provide a basis of comparison when selecting
hardware and software to configure a new IoT
network or to develop and expand an existing one.
IoT devices may be characterized by capabilities:
• Data acquisition and control
• Data processing and storage
• Connectivity
• Power management
Data acquisition and control
Data acquisition (DAQ) gathers analog
information at a fixed time interval (the data
sample rate), and transmits it as a digital signal
to a remote output device for a digital readout.
DAQ may include signal conditioning (to
manipulate and scale raw sensor readings), and
analog-to-digital converters to convert the
analog sensor readings into digital values so that
they can be processed and analyzed.
3. Sensors are components that measure physical
variables and convert them to electrical signals
(voltages). Sensors are available, commercially,
off-the-shelf, and specified to measure a range
of variables which include: temperature,
humidity, pressure, smoke, gas, light, sound,
vibration, air-flow, water-flow, speed,
acceleration, proximity, GPS position, altitude,
and a multitude of other variables.
Sensors vary in their functionality and may be
used to measure a wide assortment of
conditions. For example, proprioceptive sensors
monitor the internal state of the device. Sensors
such as push buttons, sliding controls, or
touchscreens may be used to interact directly
with a device (Human-Machine Interface).
Each type of sensor has many options.
Manufacturers and their sensor product
specifications vary. The sensor’s accuracy,
precision, and required operating condition may
vary from catalog to catalog and from
manufacturer to manufacturer. Sensors may be
used within an engine, underwater, embedded
in humans or animals, and even in space.
4. Environments require different sensor
characteristics and are designed for different
uses accordingly.
An important characteristic of sensor
components is resolution. The resolution of a
sensor represents the smallest amount of
change that the sensor can reliably read and is
related to the size of the numeric value that is
used to represent raw sensor readings. For
example, an analog temperature sensor with 10
bits of resolution represents a temperature
reading using a numeric value between 0 and
1023. Bits are binary, so 10 bits provides two to
the power of 10, or 1024 possible values in
total. However, in practice, sensors are affected
by electrical noise which reduces the actual
resolution.
While sensors convert a physical variable like
temperature to an electrical signal, output
devices are the inverse: they convert an
electrical signal to a physical outcome. Output
devices include LEDs, speakers, and screens.
This may require actuators such as motors,
relays, and solenoids that physically actuate
5. something. Actuators are common in industrial
IoT applications. For example, pneumatic linear
actuators are widely adopted in manufacturing
to move and grip products during the assembly
process. An actuator on an axle of a school bus
may actuate braking when adverse motion is
detected. A high temperature in a refrigerated
container with produce inside, may actuate an
alarm when a temperature rises to a certain
unacceptable level.
Data processing and storage
IoT devices require specific data processing and
storage capability. This helps achieve data
aggregation, transmission, and analysis. Some
IoT devices may process data directly, while
others transmit this data to other devices,
gateway devices, or cloud applications for
further aggregation and analysis.
Edge analytics performs data analysis at the
edges of a network rather than in a centralized
location. Data can be analyzed in realtime on
the devices themselves, or it can be analytized
on a nearby gateway device (like a router)
connected to the IoT devices, in lieu of
6. transmitting large volumes of data upstream to
a cloud server or data center for further
analysis. Processing data at the edge aggregates
and filters the data as it is collected, with only
the most salient data sent upstream. Edge
analytics reduces upstream processing and
storage requirements alleviates network load.
The processing power and storage used by an
IoT application depends on processing required
by the services or apps that consume the data.
Available memory and processor specifications,
clock speed, and number of cores, all of which
subsequently determine the devices rate of data
processing. The capacity of the non-volatile
flash, which is used to persist data until
transmitted upstream, determines how much
data can be stored on the device. Devices
performing edge analytics require substantially
more processing capabilities than devices that
perform only basic data processing like
validating, normalizing, scaling, or converting
readings.
Connectivity
7. Network connectivity is a defining characteristic
of any IoT device. Devices communicate with
other devices locally. They then publish data via
cloud-based services. Some devices
communicate wirelessly, by using 802.11 (Wi-
Fi), Bluetooth, RFID, cellular networks, or Low
Power wide area network (LPWAN) technologies
like LoRa, SigFox or NB-IoT. Wired
communication is suited to stationary devices.
Such devices may be installed in smart
buildings, home automation, and industrial
control applications, for example, and connected
with Ethernet, or retrofitted with Ethernet over
power. Serial communication is a form of wired
connectivity between devices, using standard
protocols like Universal Asynchronous Receiver
Transmitter (UART), or the Controller Area
Network (CAN) protocol, which has its origins in
the automotive industry.
Power management
Power management is a critical factor for
portable and wearable IoT devices that rely on a
wireless power source, such as batteries or
photovoltaic cells (solar). Depending on usage
patterns and the power requirements of the
attached sensors, actuators, or integrated
8. circuits (ICs), a device may be put into sleep
mode or into low-power mode periodically to
conserve power.
For example, a single-board computer like the
Raspberry Pi 4 requires around 700 – 1000mA of
current to operate under typical usage. If you
were transmitting data constantly over a wifi
network, or if the device under heavy load was
performing a lot of data processing, the power
usage would be high, but then it would drop
when the device became idle. If you connect a
camera module, the required amperage
increases by about 250mA when the camera is
in use. Also, sensors normally require power to
operate; the GPIO pins on the Raspberry Pi
supply 3.3V or 5V, up to a total of 50mA current
across all of the pins. The power consumption of
the device increases as you increase the number
of components that are attached to the pins.
Microcontroller development boards
A microcontroller is a SoC that provides data processing
and storage capabilities. Microcontrollers contain a
processor core (or cores), memory (RAM), and erasable
programmable read-only memory (EPROM) for storing the
custom programs that run on the
9. microcontroller. Microcontroller development boards are
PCBs with additional circuitry to support the
microcontroller to make it more convenient to prototype
with and program the chip.
Sensors and actuators connect to the microcontroller
through digital or analog General Purpose
Input/Output (GPIO) pins or through a hardware bus.
Standard communication protocols like I2C and SPI are
used for intra-device communication with the components
that are connected with the bus. Adopting standards
makes it easier to add or swap out components that are
connected with the bus.
Arduino (http://arduino.cc/en/Main/) is an open source
device platform, with an active community who are
creating compatible development boards and tooling.
Device capabilities vary across the official Arduino models
(https://www.arduino.cc/en/Products/Compare)), and
also between the dozens of third-party compatible
boards. All of the devices in are Arduino-compatible
microcontrollers, including the ubiquitous Arduino Uno,
Particle’s Electron, which includes an integrated cellular
modem, and Espressif Systems’
(https://espressif.com/en/products/hardware/esp8266ex/
overview) ESP8266-01, a low cost, low-power
microcontroller with integrated wifi.
10. Figure 1. Arduino micro-controller development board
Like Arduino, the ESP8266, has an active community of adopters. Notable
development boards that are based around the ESP8266, include NodeMCU, WeMos
D1, and AdaFruit’s Feather Huzzah (https://learn.adafruit.com/adafruit-feather-
huzzah-esp8266/overview). A number of alternative firmware options for ESP8266-
based boards have been developed by the open source and maker community,
enabling IoT developers to program for these boards using Lua, Python, and
JavaScript, and to support over-the-air (OTA) updates.
Table 1. Technical specifications for Arduino Uno, Particle Electron, and Espressif
Systems ESP8266-01 microcontrollers
CharacteristicFeature Arduino Uno
Particle
Electron
Espressif
Systems
ESP8266-01
Data acquisition and control
GPIO pins
6 Analog in
14 Digital – 6 PWM
12 Analog in
2 Analog out
30 Digital – 13
PWM
2 Digital
1 Analog
Logic level
voltage 5V 3.3V 3.3V
Data processing and storage
Processor ATMega328P
32-bit
STM32F205
ARM Cortex M3
32-bit Tensilica
L106
Processor speed 16 KHz 120 MHz 80 MHz
Memory
32 kB flash,
1 kB EEPROM
1 Mb flash,
128 kB RAM 1 Mb
Connectivity
11. CharacteristicFeature Arduino Uno
Particle
Electron
Espressif
Systems
ESP8266-01
Network
Interfaces
None by default. Can
be added with shields.
Integrated
cellular modem
(2G / 3G) Integrated wifi
Power
Recommended
Power Supply
9-12V DC 0.5 – 2A
barrel, or 5V 500mA
USB, or 9 – 12V on
VIN pin
5V micro USB or
3.9V-12VDC on
VIN pin
Regulated 3.3V
300mA supply
on VCC pin
Other
Dimensions 2.7 in X 2.1 in 2.05 in x 0.8 in 1.4 in x 1 in
Typical cost $20 $39 – $59 $10
Single board computers
Single board computers (SBCs) are a step up from
microcontrollers. They allow you to attach peripheral
devices like keyboards, mice, and screens, as well as
offering more memory and processing power (for
example, a 1.2 GHz 32-bit ARM microprocessor from
compared to an 8-bit 16KHz microcontroller from ).
Table 2 lists technical specifications for three SBCs, the
Raspberry Pi 4 (https://www.raspberrypi.org/),
BeagleBone Black (http://beagleboard.org/black) and
DragonBoard 410c
(https://developer.qualcomm.com/hardware/dragonboard
-410c).
12. CharacteristicFeature
Raspberry Pi
4 BeagleBone Black Qualcomm DragonBoard 410c
Data acquisition and control
GPIO pins
40 I/O pins,
including 29
Digital
65 Digital – 8 PWM
7 Analog in 12 Digital
Logic level
voltage 3.3V 5V 1.8V
Data processing and storage
Processor
ARM Cortex
A72
AM335X ARM
Cortex A8 ARM Cortex A53
Processor speed 1.5GHz 1 GHz 1.2 GHz
Memory 1-4 Gb
512 Mb RAM, 4 Gb
Flash 1Gb, 8Gb Flash
Connectivity
Network
Interfaces
Wifi, Ethernet,
Bluetooth
Ethernet,
USB ports allow
external wifi /
Bluetooth adaptors Wifi, Bluetooth, GPS
Power
Recommended
Power Supply
5V 3A USB
Type C 5V 1.2A – 2A barrel 6.5 – 18V 2A barrel
Other
Dimensions 3.5 x 2.3 in 3.4 x 2.1 in 3.3 in x 2.1 in
Typical cost $35 $55 $75
13. Figure 2. Raspberry Pi single-board-computer
The distinction between microcontrollers and single-board-computers is somewhat
arbitrary. Some devices, like the Onion Omega 2 (https://docs.onion.io/omega2-
docs/omega2.html#omega2), fall somewhere in between, with almost as much on-
board memory and processing capability as a low-end SBC. There are also a number
of hybrid devices, like the UDOO Quad
(http://www.udoo.org/docs/Introduction/Introduction.html) that integrate an ARM-
based Linux system with an Arduino-compatible micro-controller.
As with microcontrollers, SBC device capabilities can
be expanded through the addition of stackable
expansion boards known as hats on Raspberry Pi
and capes on BeagleBone Black, and through the
addition of external modules, such as motor
controllers or analog-to-digital converters, to
mitigate limitations with the built-in device
capabilities.
Many SBC devices are more like a mini-PC, and run
an embedded operating system, typically a
14. streamlined Linux distribution. As a result, there are
many more development tools and language
choices that are available for developing embedded
applications that work with the attached sensors
and actuators on these devices than on
microcontroller boards. However, SBCs are more
complex to set up, larger, more power hungry, and
more prone to problems like corruption of the SD
card or flash memory where applications are stored.
Choosing between microcontroller development
boards and single-board computers
Although off-the-shelf microcontroller development
boards and single-board computers might only be
part of an IoT solution, they are ideal for
bootstrapping the development of one.
One way to get started is to consider the key IoT
device characteristics in light of your application’s
requirements, and then work through the following
design decisions:
• Determine the type and number of peripheral
sensors and output components that you need,
and, if necessary, any design circuits for these
components
• Select a microcontroller or single-board device
to co-ordinate reading from and controlling the
peripheral components
15. • Decide on the data communication protocols
that you need to use for intra-device
communication (for example, using I2C for
communication between the microcontroller and
any attached sensors)
• Select the networking hardware and protocols
that you need to use to communicate with
cloud services and apps
For example, to set up a home automation system
on a budget, you may choose the Raspberry Pi Zero
W. It is a small and very low-cost SBC device with
ample processing power and memory (1GHz ARM6
processor and 512 MB RAM) to perform data
processing and analytics on the device. It supports
microSD card flash memory expansion up to 64GB
for storing programs and data. And, it is equipped
with a full 40-pin GPIO header, just like the
Raspberry Pi 4, which allows connecting multiple
sensors and supports both SPI and I2C protocols. It
has on-board wifi for connecting with a home
network, and it can be powered with micro-USB off
a portable power pack or wall power supply.
As you progress further with your IoT landscape
design you may stop and compare your anticipated
performance with design intent. Conduct device
design and prototype, embedded software
selection, and the selection of upstream services
and apps, but then stop to assess it. You can
periodically assess your prototypes against your
16. functional and non-functional requirements,
including performance, reliability, and security, and
revisit these choices as necessary.
IoT hardware requirements for deploying your IoT
project
IoT devices are highly specialized. They are
designed to operate within very specific
environments. The hardware for IoT projects vary
widely. While you may prototype with generic off-
the-shelf hardware, you eventually can move
toward the design and development of custom PCBs
and components, tailored to the requirement of
your IoT solutions. As part of this process, you will
need to consider these kinds of hardware
requirements:
• Security requirements
• Ease of development
• Data acquisition, processing and storage
requirements
• Connectivity requirements
• Power requirements
• Physical device design
• Cost requirements
Security requirements
Security is critical element within IoT. It is
imperative that it be considered at all stages of
design and development. Data integrity and security
17. captured by any device must remain intact – even
during prototyping. Security requirements apply to
the IoT devices themselves, your network, and the
cloud, mobile and web service applications.
Related security requirements include:
• Ensuring that each device has enough
processing power and memory to be able to
encrypt and decrypt data and messages at the
rate that they are sent and received
• Ensuring that the embedded software
development libraries support whatever
authorization and access control mechanisms
are used to authenticate with upstream services
and apps
• Choosing to adopt off-the-shelf devices that
implement device management protocols for
securely registering new devices as they are
added to a network to avoid spoofing, and
those that include firmware capabilities to
support secure over the air updates for security
patches.
Ease of development
While prototyping, ease of development is another
high priority requirement so that you can quickly
and easily get your IoT device up and running,
18. capturing data, and communicating with other
devices and the cloud.
Consider the accessibility, availability, and quality of
API documentation, development tools, and support
offered by the hardware manufacturer or by the
development community. Select devices that are
quick and easy to program and re-flash, as well as
being low touch to deploy, with zero or minimal
per-device configuration required, to cut down on
frustration and save time while you are developing
your IoT solution.
Data acquisition, processing, and storage
requirements
The number of sensors that are connected, the
resolution of the data that is captured, and the rate
at which the data is sampled all determine the
volume of data to be processed, which impacts on
data processing and storage requirements.
The amount of data that needs to be retained on a
device is dependent on how frequently the device
connects to transmit data upstream. A wired,
always-connected device that is installed in a smart
building, one that streams low volumes of raw data
directly to a highly available server, will require less
data processing power and storage compared to a
device that needs to process large volumes of data
in bursts. A device that only connects every few
19. hours to conserve power will require more storage
to log data locally in the interim.
Connectivity requirements
Connectivity requirements for wireless networking
include operating range, how far the signal will
need to be transmitted, and the anticipated volume
and rate of data to be transmitted. Consider fault-
tolerance and the ability for a device to reconnect
and retry sending data, after it was disconnected.
Your hardware may have integrated network
connectivity like Bluetooth or wifi, or this capability
might need to be added with an expansion board or
module. An external module that can be upgraded
can provide more flexibility, as you have the option
to try different modules to evaluate their range and
power consumption.
Power requirements
Many of the other requirements, including the
number of sensors needed, and the rate of network
transmission, will impact the device’s power
requirements. Consider whether your device wll be
hardwired for power, or require a portable power
source like a battery or supercapacitor. If it requires
a portable power supply such as a battery, you
need to know the size, weight, and capacity
requirements for the battery, as well as whether it
must be rechargeable, replaceable, or discarded
20. after the battery dies. If the device is rechargeable,
how often should be charged, and by what means?
Physical device design requirements
The physical device design requirements include the
appearance and size of the device.
The environmental conditions in which the device
will be installed also need to be considered, for
example, will it need a waterproof or ruggedized
enclosure? For example, a device that is installed on
the underside of a truck as part of a fleet
monitoring application would need to be shielded to
ensure it continued to operate under harsh
conditions; it would need to be waterproof and
resistant to dirt, shock, and vibration.
Cost requirements
The cost of the hardware includes the initial outlay
for the hardware and associated components (such
as any sensors) as well as their on-going operating
costs, such as power and maintenance costs in the
form of replacing worn parts or defective
components. Also consider possible licensing fees
for some components or device drivers. Purchasing
commercially available off-the-shelf development
boards or SBCs may be more economical than
fabricating custom boards. As you scale out your
IoT network with many devices, dedicated
hardware devices may become a wiser alternative.
21. Conclusion
Every application and situation is different. There is
no “one-size-fits all” approach to selecting hardware
for IoT projects. Adopting standards-based,
commodity hardware like microcontrollers, or
single-board-computers, can save time and expense
in the early stages of development, without
sacrificing flexibility. What you learn in the
prototyping phase can help make critical hardware
design decisions later in deploying your IoT
solution.