Workshop on IoT and Basic Home Automation_BAIUST.pptx

Redwan Ferdous
Loves Robotics, Automobiles, Projects, Tech-Investment
- Professional Project Manager (PRINCE2, PMP)
- Director, FronTech Ltd. & Founder, JRC Board
- Worked for Walton, Aamra & Labaid for past 12 years
- B.Sc. (EEE) from AUST
M.Sc. (IT) from JU
MBA (Finance) from DU
ACMP 4.0 from IBA, DU
- Senior Member, IEEE, Life Member, IEB
- Electrical Supervisor of GoB
- Country Representative of Bangladesh for
- International Robot Olympiad
- World Robot Olympiad
- World Robotics Championship
www.redwanferdous.com | https://frontech.global
redwan@frontech.global
16-Aug-23 2

Ground Rules
• Its an informal session, feel free to ask questions. No matter how silly
or irrelevant you think! Just Ask!
• Please don’t do side talks. You are grown up now!
• Medium of Knowledge sharing: English & Bangla
• You can take snapshots of the PPT! However, all are available on
Slideshare, Github and Internet.
• Today- you come here to get the food of thinking and exploring for
next few weeks. You will not learn everything about IoT and
embedded system today- but you will learn- ‘How to Learn’!
©FronTech Ltd. Contents from Internet for Knowledge Purpose. 3
16-Aug-23

Disclaimer
• You need not to invent wheel all the time, rather its better to create
application using that wheel !!
• Most of the contents of my slides are collected from internet. Credit
mentioned with due respect at the last slide.
• My job is to facilitate the way of learning. Your job is to explore
according to that.
• If you assure me of ‘Practice’, I can assure you of ‘Success’.
4
©FronTech Ltd. Contents from Internet for Knowledge Purpose.
16-Aug-23

And, I’m Considering…
• You have knowledge of the followings:
• Basic Electronics (Resistance, Capacitance, Inductance, Transistor, FET, Diode,
AC-DC, Op-Amp, Opto-couplers)
• Basic Analog and Digital circuitry
• Basic Components (LED, LDR, POT, LCD, Motor)
• Basic Example coding experience in Arduino IDE
5
16-Aug-23

Today’s (or 2 days!) Agenda
• Robotics, IoT, Embedded Systems
• Introducing with ESP8266
• 12 projects with ESP8266 and IoT- Live monitoring and control from
internet!
• Fun and Learn!
6
16-Aug-23

What is Microcontroller?
16-Aug-23 ©FronTech Ltd. Contents from Internet for Knowledge Purpose. 7

16-Aug-23 8

16-Aug-23 9

Microcontroller Development
Board
16-Aug-23 10

Embedded System
11
16-Aug-23

Embedded System
• The difference between embedded systems
designers and software engineers or IT
technicians is the in-depth knowledge of the
hardware that embedded designers possess.
• Embedded designers must have knowledge of
electronics to effectively design embedded
systems.
12
16-Aug-23

Entry Level Boards
Easy to Use and Ready to Power Your First Creative
Project
8/16/2023 ©FronTech Ltd. Contents from Internet for Knowledge Purpose. 13

Enhanced Feature Boards
The Boards with Advanced Functionalities or Faster
Performances for Complex Projects

Arduino and Sensors
15
16-Aug-23

JRC Board
JRC board is a microcontroller board based on the ESP-
WROOM-32. It has 20 digital input/output pins of which
pin 25 and 26 can be used as analog outputs, 12 analog
inputs, an USB type C connection, an ICSP header and a
reset button. It contains everything needed to support
the microcontroller. Simply connect it to a computer
with a USB cable or battery to get started. Keep Up with
the World A Low-Cost Board for Schools in Bangladesh
and Beyond. Powerful System on Chip. An In-House
Development Board for our future products to blend in
the Existing Ecosystem.

ESP32 chip Reset button
Voltage Regulator
USB Type-C port
Uploader Chip
(FT232RL)
Circuit Protection Diode
GPIO pins
I2C pins
UART pins
GPIO pins
Power pins
RESET pin
Reference pin
L293D IC ICSP pins

Specs and Features:
Processors:
● CPU: Xtensa Dual-Core 32-bit LX6 Microprocessor, operating at 240 MHz and performing
at up to 600 DMIPS.
● Ultra-Low Power (ULP) Co-Processor.
Memory:
● 520KB of RAM (expendable up to 8MB externally)
● 1024 locations for EEPROM
● 4MB of flash memory (expandable up to 16 MB externally)
Wireless connectivity:
● Wi-Fi: 802.11 b/g/n
● v4.2 BR/EDR and BLE
Peripheral Interfaces:
● 12-bit SAR ADC up to 18 channels
● 2 × 8-bit DACs (GPIO 25 and 26)
● 18 × PWM pins (Controlled by up to 16 channels)
● 7 × Touch Sensors (Capacitive Sensing GPIOs)
● 1 × SPI
● 1 × I2S Interfaces
● 1 × I2C Interfaces
● 2 × UART
● All digital pins compatible with external interrupt

Platforms for developing IoT Solutions:
Hobbyist
• ESP32/ ESP8266
• Arduino
• Raspberry Pi
• Particle
• Intel Edison
• Adafruit Platforms (i.e.Flora)
15-May-20 19
Most of the contents of this presentation file is collected from internet. The sources are mentioned with respect in the end 03 slides. Thank you to the contributors.

Platforms for developing IoT Solutions: IIoT
• STM32 Development Boards (i.e. STM32L4 IoT Discovery Kit)
• ZedBoard
• Nvidia Jetson (For Machine Learning)
• Sti Microcontroller Based Platforms
15-May-20 20

Protocols Used in IoT/Smart Devices
• WiFi
• Bluetooth
• ZigBee
• NFC
• Cellular (3G/4G/LTE)
• LoRaWAN
• MQTT (Message Queue Telemetry Transport)
• DDS (Data Distribution Service)
• AMQP
• RFID
• Z-Wave (Low Range-Home appliance usage)
• Sigfox (Cellular +WiFi)
15-May-20 21

Basic Electronics
22
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About ESP8266
• Tiny but powerful microcontroller
• Very cheap
• Built in Wi-Fi
• IoT enabled
16-Aug-23 23

ESP8266 Board View

ESP8266 Pinouts
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Arduino IDE
27
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Version: 01
Version: 02

Let’s Explore
• Let’s explore Arduino site and find different options with Arduino:
https://www.arduino.cc/
28
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Getting started with Programming
29
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void setup() {
// put your setup code here, to run once:
}
void loop() {
// put your main code here, to run repeatedly:
}
Bare minimum code
30
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• setup : It is called only when the Arduino is powered on or reset. It is
used to initialize variables and pin modes
• loop : The loop functions runs continuously till the device is powered
off. The main logic of the code goes here. Similar to while (1) for
micro-controller programming.
Bare minimum code
31
16-Aug-23

• A pin on arduino can be set as input or output by using pinMode
function.
• pinMode(13, OUTPUT); // sets pin 13 as output pin
• pinMode(13, INPUT); // sets pin 13 as input pin
PinMode
32
16-Aug-23

• digitalWrite(13, LOW); // Makes the output voltage on pin 13 , 0V
• digitalWrite(13, HIGH); // Makes the output voltage on pin 13 , 5V
• int buttonState = digitalRead(2); // reads the value of pin 2 in
buttonState
Reading/writing digital values
33
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• What is analog ?
• It is continuous range of voltage values (not just 0 or 5V)
• Why convert to digital ?
• Because our microcontroller only understands digital.
Analog to Digital Coversion
34
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Installing ESP8266 Board Manager for Arduino IDE
First Click on “File”,
then “preferences”
A new window should
pop up
16-Aug-23 35

In the dialogue box “Additional Board
Manager URL”, Paste the link below and
hit “Okay”
http://arduino.esp8266.com/stable/package_esp8266com_index.json
You can directly find this link by searching this keyword in google:
“what is esp8266 board manager url for arduino ide?”
16-Aug-23 36

On Arduino IDE V1, click on
“Tools”, Then “Board”, then
“Boards Manager”
A new window will pop up.
On Arduino IDE V2, directly click on
“Boards Manager” icon.
16-Aug-23 37

Search for “ESP8266” on search bar. Whatever shows up on first,
click “Install” for the latest version

Know your Components
• ESP 8266
• Four Channel 5v Relay Module
• IR sensor
• Rain Sensor
• Motion Sensor
• BMP280
• MQ135
• HC-SR04-Ultrasonic
• Soil moisture sensor
• L298N motor driver
• Chassis for 4WD car.

Know your Components
• We will learn about each devices through ‘Datasheet’

Session’s Project List
1. Led Blink
2. Ac line load on off
3. Iot base Fire Notification Alert System
4. Iot Rain Notification Alert System
5. Automatic Thief Detector system
6. IoT Based Home Weather
7. Gas leakage alert system
8. Water level monitoring system
9. IoT based smart irrigation system
10. IoT based smart home automation system
11. IoT based smart 4wd car.

First Project
Blink your LED
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Circuit Diagram
16-Aug-23 43

Code
Click on File, then
click on
examples, then
click on basics,
and then Blink. A
new code will pop
up.
16-Aug-23 44

Uploading the Code
Click on Board
selection panel as
the markings
indicated.
Then select other
board and port.
16-Aug-23 45

Uploading the Code
Search for
Generic ESP8266
Module in the
board search
option.
Select the proper
COM Port and
click okay.
16-Aug-23 46

Code
After setting up
the board. Click
on the Upload
Icon.
16-Aug-23 47

2nd Project
Enable your IoT Device
16-Aug-23 48

Circuit Diagram
16-Aug-23 49

IoT Online Platform/ Server
• For the entire session, we will use ‘Blynk’ as IoT Server
• ‘Blynk’ is the common and mostly used IoT server for device control
• Other than, ‘Blynk’, there are ‘Sematext Cloud’, ‘IFTTT’, ‘Mingo’.
‘Scaleway’, ‘Google Cloud IoT’ and others.
• Please go to ‘https://blynk.cloud’

Create an account in Blynk
First, go to your browser and search for blynk.cc -> then click on Start Free. A new window will pop up.
Here enter your email address and then click Sign Up.
16-Aug-23 51

A confirmation link will be sent to your mail. Clicking on that link will bring you back to Blynk platform.
Here you will see an option to set your name and create password which will keep your account secure.
16-Aug-23 52

Here you will see some guideline. You can click Next for all of them
1 2 3
4 5 6
7 8

Now we will be redirected to a QuickStart guide. Here on this window we will select ESP8266 as device
and Wi-Fi as connectivity type. Then click next
16-Aug-23 54

On next window, we will select Arduino as our IDE and click Next. Then we will be instructed to install
Blynk Library to our Arduino IDE. Install the library following the instructions and then click next.
16-Aug-23 55

On Arduino IDE V2, we can simply select the Library icon and search “Blynk” on the search bar. Finding the
appropriate library, click install.
16-Aug-23 56

Here on this window, write down your Wi-Fi name and password where you want your device to connect.
Then copy the code to use it in your Arduino IDE
1
2
3
16-Aug-23 57

After Copy-Pasting
code to a new
sketch, we are
ready to upload the
code.
But to truly admire
the implementation
of IoT system, we
need to add two
lines of code in our
sketch in order to
pair a LED with
the IoT system.
Follow the Markings
in the image.
After setting up
the code, Upload
the code to your
board.

If the device successfully connects with the internet, you will see a confirmation window. Clicking on Go To
Device, we will be introduced with a default dashboard where we can control our built-in LED by clicking on
virtual switch on dashboard.
16-Aug-23 59

Rain Notification in IoT
16-Aug-23 60

Circuit Diagram
16-Aug-23 61
Connect D2 instead of D1

Code
Go to your Code Folder, then search for
“IoT_Based_Rain_Detection”
and Open it.
Remember: do change your template
ID, template name and Authentication
Token according to your blynk
dashboard. Otherwise, the device
won’t connect to your server.
16-Aug-23 62

Focus on this Indicator Panel for Rain Detection
16-Aug-23 63

Gas Leakage Monitoring in IoT
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Circuit Diagram
GND
AO
VCC
16-Aug-23 65

Code
“IoT_Based_Gas_Leakage_Detection”
and Open it.
16-Aug-23 66

Create a new Data Stream to use a new widget
This is because we can get maximum value
of 1024 in analog reading of JRC Board
16-Aug-23 67

Drag this widget to show
the sensor data
16-Aug-23 68

We can do all sorts of
modification here!
Follow this guide to edit
the last widget we added
and then click save
16-Aug-23 69

Also, edit the Guage Level
Widget and change it
according to virtual pin
value V6
16-Aug-23 70

We can also use chart
widget to accurately
show sensor data
over time
16-Aug-23 71

Edit the widget
according to guideline
16-Aug-23 72

After clicking “Save and Apply” the
dashboard should look like this!
Pretty cool, right?
16-Aug-23 73

IoT based Water Level Monitoring

Circuit Diagram

Code
“IoT_Based_Theft_Detection”
and Open it.
Remember: do change your template ID,
template name and Authentication
dashboard. Otherwise, the device won’t
connect to your server.

Function of pulseIn()
• The pulseIn() function reads a HIGH or a LOW pulse on a pin. It
accepts as arguments the pin and the state of the pulse (either HIGH
or LOW). It returns the length of the pulse in microseconds. The pulse
length corresponds to the time it took to travel to the object plus the
time traveled on the way back.

Focus on this indicator widget for
Water Pump Status. Sensor Distance
value can be observed in Sensor Value
panel

IoT Based Weather Monitoring
16-Aug-23 79

Circuit Diagram
SCL
SDA
SCL
SDA
VCC
GND
16-Aug-23 80

Code
“IoT_Based_Weather_Monitoring”
and Open it.
16-Aug-23 81

Create 2 New Data Streams for
Temperature and Pressure
16-Aug-23 82

You can edit the DataStream of
the Chart widget to temperature
to show the timewise weather
update

We can do all sorts of
modification here!
Follow this guide to edit
the last widget we added
and then click save
16-Aug-23 84

Also, edit the Guage Level
Widget and change it
according to virtual pin
value V9 to show Pressure
Guage
16-Aug-23 85

Temperature value can be observed in Sensor Data and Chart
Pressure can be observed in Pressure Guage

Fire Alarm Notification in IoT
16-Aug-23 87

Circuit Diagram
16-Aug-23 88

Code
“IoT_Based_Fire_Detection”
and Open it.
16-Aug-23 89

Focus on this Indicator Panel for Fire Detection
16-Aug-23 90

IoT Based Appliance Control
16-Aug-23 91

Circuit Diagram
16-Aug-23 92

Code
“IoT_Based_Appliance_Control”
and Open it.
16-Aug-23 93

First, we need to edit the dashboard
1
2
16-Aug-23 94

We can have a look at the DataStream. Here, we don’t
need the Button Image, so we can delete it.
16-Aug-23 95

As soon as we click
delete button, there
will be a pop-up
window asking for
confirmation. Do the
steps accordingly and
click delete
16-Aug-23 96

To newly insert any wizard, we need to add a DataStream
for each individual appliance control
1
2
16-Aug-23 97

We need to set appropriate variable type for the DataStream
and Name it however we want
1
2

We can also edit the existing DataStreams by clicking on it.
Let’s give them all the appropriate name
16-Aug-23 99

We can also duplicate any virtual pin for fast adding using this button
16-Aug-23 100

This is how it looks after editing all the Data Streams
16-Aug-23 101

Now we can focus on web dashboard. We can drag and drop any
free widget at our convenience and resize them in anyways.
16-Aug-23 102

Now, we add two new widgets for controlling two
appliances simultaneously.
16-Aug-23 103

We can edit any widget by hovering mouse cursor to its
corner and then click settings
1
2
16-Aug-23 104

This widget indicates the
feedback status from device end.
We can select appropriate Data
Stream (according to code) and
Name it to our convenience

Do the same for Switch widget also!

After doing all the necessary steps,
the dashboard should look like this
Click “Save and Apply”
16-Aug-23 107

IoT Based Soil Moisture Monitoring
16-Aug-23 108

Circuit Diagram
16-Aug-23 109

Code
“IoT_Based_Soil_Moisture_Monitoring”
and Open it.
16-Aug-23 110

Create a new Data Stream to use a new widget
16-Aug-23 111

Now we add a Slider widget to manually adjust
the trigger value for soil moisture sensor
16-Aug-23 112

Edit the widget
according to guideline
16-Aug-23 113

We added a relay to this system to activate pump which can be shown in Indicator_1
Soil Moisture value can be observed in Sensor Data and Chart
The trigger point to activate pump can be set in Threshold slider
16-Aug-23 114

IoT based Theft Notification

Circuit Diagram

Code
“IoT_Based_Theft_Detection”
and Open it.

Focus on this indicator widget for
Theft Alarm Indicator. The theft alarm
can only be turned off from Relay_1
switch.

End of Day-1
See you tomorrow!

IoT Smart Home
Do combine all the sensors you have and Execute!

Wi-Fi Controlled Robot Car

Circuit Diagram

Code
“Wi-
Fi_Controlled_4X4_Wheeled_Robot”
and Open it.
Remember: do check your motor
connection and power connection
properly

Activating your Car
Open your Serial Monitor by clicking on the
Serial Monitor Icon
Select Baud Rate to 115200
Press Reset button of your ESP8266 module
(Note that your device should be plugged in
into your pc)
Check the Serial Monitor below for IP Address
1
3 2

Connect from your Smartphone
Search exact same IP address from your smartphone. You can use google chrome or any sorts of mobile browser.
Be sure to connect the same Wi-Fi as your ESP8266 device and rotate your phone in landscape mode.
IP Address
Direction Control
Speed
16-Aug-23 125

Thank You.
https://redwanferdous.com
https://frontech.global
redwan@frontech.global
126
17-Aug-23

Workshop on IoT and Basic Home Automation_BAIUST.pptx

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