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Internet of Things(IoT)
workshop through wifi chip
บริษัท เรียลไอที จำกัด Mr. Pairoch Julratroiet.io
FACULTY OF INFORMATICSMAHASARAKHAM UNIVERSITY
17 February 2017
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Agenda
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What is IoT
Impact
Workshop
Apply
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What is Internet of Things
Source: OpenSAP
Internet of Things (IoT) or Internet of Everything (IoE) refers to devices or objects that are connected to the Internet, like your smartwatch, lamp, or even your refrigerator. These devices are able to collect and transmit data via the Internet, contributing to our big data world.
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Evolution of IoT
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Trend
Source: OpenSAP
Source: Gartnerroiet.io5
Note: Gartner Hype Cycle
Source: thailibrary.in.th
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2
3
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How Big is the IoT?Some analysts estimate the number of connected devices by 2020.
Gartner — 20 billion
Cisco — 50 billion
Intel — 200 billion
World Population: 7.5 Billion (2017)
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Economic Impact
McKinsey believes that the market for IoT could reach
$11.1 trillion by 2025roiet.io8
IP Address Needs• IPv4, handle a maximum 4.3 billion
unique IP addresses
• IPv6, expands from 32 bits (IPv4) to 128 bits
• IPv6, we will have 340,282,366,920,938,463,463,374,607,431,768,211,456 unique IP addresses.
Source: Cisco
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Make things connected
Wireless Wire
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Wireless Wire
Make things connected
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Make things connected
Wifi Chip
10101101
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Wifi chip
ESP Photon
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Wifi chip
ESP Photon
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ESP8266 wifi chip
Hardware:
1. CPU
2. Memory (RAM/ROM)
3. General Purpose I/O (GPIO)
1 2
3ESP-01
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ESP8266 Models
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ESP8266 Models
Flash = 512KB
Flash = 4MB
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ESP-01Pinout
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ESP-01GPIO
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ESP-01How to program/flashing that chip.
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ESP-01Breakout Board
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ESP-12Pinout
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ESP-12GPIO
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ESP-12Breakout Board
EspressoLite NodeMCU WeMos(ESP-WROOM-02)
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Programing Platform
AT command Arduino (C) MicroPython
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Work Shop!
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Set EnvironmentDownload then Install ArduinoIDE (www.arduino.cc)
Start Arduino and open Preferences window.
• Enter http://arduino.esp8266.com/stable/package_esp8266com_index.json into Additional Board Manager URLs field.
• Open Board Manager from Tools > Board > Board Manager and then install esp8266 by ESP8266 Community
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Set EnvironmentInstall dependency libraries
• Open Library Manager (menu Sketch > Include Library > Manage Libraries…) then install libraries you want.
DHT sensor library by Adafruit Adafruit GFX Library by Adafruit ESP8266 Oled Driver for SSD1306 display by Daniel Eichborn HttpClient by Adrian McEwen PubSubClient by Nick O'Leary
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Set EnvironmentUSB-Serial communication
Most microcontrollers these days have built in UARTs (universally asynchronous receiver/transmitter) that can be used to receive and transmit data serially. UARTs transmit one bit at a time at a specified data rate (i.e. 9600bps, 115200bps, etc.). This method of serial communication is sometimes referred to as TTL serial (transistor-transistor logic). Serial communication at a TTL level will always remain between the limits of 0V and Vcc, which is often 5V or 3.3V.
The RS-232 standard a logic high ('1') is represented by a negative voltage from -3 to -25V, while a logic low ('0') transmits a positive voltage that can be anywhere from +3 to +25V. On most PCs these signals swing from -13 to +13V.
Source: sparkfun.com
TTL / UART
RS-232
Sending 0b01010101
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Set EnvironmentUSB-TTL chip (ie. FTDI, CH340, CP2102 )
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Set EnvironmentInstall driver for USB-TTL chip
Mac / Linux:
Download: http://www.realitlimited.com/training/msu/2017-02-17/IoT101/CH340_Mac.zip
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Set EnvironmentInstall driver for USB-TTL chip
Windows: Download: http://www.realitlimited.com/training/msu/2017-02-17/IoT101/CH34x_Windows.zip or http://www.wch.cn/download/CH341SER_EXE.html
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Flashing Firmware1. Download Firmware (.bin)
www.realitlimited.com/training/msu/2017-02-17/IoT101/Firmware.zip
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Flashing Firmware2. Download Flasher
2.1 Mac / Linux: #pull the source code from git repository $git clone https://github.com/themadinventor/esptool.git $cd esptool $sudo python setup.py install
2.2 Windows: www.realitlimited.com/training/msu/2017-02-17/IoT101/Flasher.zip or https://github.com/nodemcu/nodemcu-flasher
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Flashing Firmware3. Upload Firmware into Chip
3.1 Mac / Linux: esptool.py -b [baud-rate] -p [device] write_flash [address] [firmware-file-name] Example: esptool.py -p /dev/ttyUSB0 erase_flash esptool.py -b 115200 -p /dev/ttyUSB0 write_flash 0x00000 Official-v1.3.0.2_AT_Firmware.bin
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Flashing Firmware3. Upload Firmware into Chip
3.2 Windows:
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First TestOpen Arduino IDE. Select Board & Port
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First TestSelect Baud Rate (Upload Speed): 115200
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Serial Monitor
Talking with Chip
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AT Command
Talking with Chip
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ATAT+GMR (version firmware)AT+CWMODE? (Check mode) 1=Client 2=Server(AP) 3=AP+ClientAT+CWMODE=1 AT+CWLAP (list the Access Point nearly) AT+CWJAP=“ชื่อ AP”,”ระบุ password”AT+CIFSR (list the obtained IP & Mac address)
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1.1 Coding Structure
Lab1: Hello World
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1.1 Wiring
Lab1: Hello World
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Breadboard
LED
Resister
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Pin IdentificationWeMos Pin Mapping with Arduino / MicroPython
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>Digital pins 6—11 are not shown on this diagram because they are used to connect flash memory chip on most modules. Trying to use these pins as IOs will likely cause the program to crash.
>Note that some boards and modules (ESP-12ED, NodeMCU 1.0) also break out pins 9 and 11. These may be used as IO if flash chip works in DIO mode (as opposed to QIO, which is the default one). >Pin interrupts are supported through attachInterrupt, detachInterrupt functions. Interrupts may be attached to any GPIO pin, except GPIO16. Standard Arduino interrupt types are supported: CHANGE, RISING, FALLING.
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2.1 Analog read
Lab2: Analog
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2.1 Wiring
Lab2: Analog
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Breadboard
Joy StickLED
Resister
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2.2 Analog read condition to turn on LED
Lab2: Analog
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2.3 Analog Write to dimming LED
Lab2: Analog
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3.1 Hello World same as Lab1
Lab3: Arduino
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3.1 Hello World same as lab01-Blink
Lab3: Hello Arduino
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I2C Wiring Master and Slave
Lab4: I2C
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Pin IdentificationArduino Nano Pin Mapping
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Pin IdentificationArduino UNO Pin Mapping
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4.1 OLED (lab04.1-OLED-I2C-Polygon)
4.2 OLED (lab04.2-OLED-My-Name)
Lab4: I2C
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5.1 Connect to internet as Wifi Client.
(lab05.1-Go-Internet)
Lab5: Go Internet
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http://www.blynk.cc/getting-started
Blynk is an Internet of Things platform with a drag-n-drop mobile application builder that allows to visualize sensor data and control electronics remotely.
Lab6: Blynk
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Authentication by Token.
Lab6: Blynk
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6.1 Wiring
Lab6: Blynk
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Breadboard
LED
Resister
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6.1 Wiring Enhance with Relay
Lab6: Blynk
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Breadboard
LED
Resister Relay
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6.1 Wiring Enhance with Relay
Lab6: Blynk
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Temperature & Humidity Sensor
Lab7: DHT
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Breadboard
DTH11/22
LED
Resister
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8.1 Send DHT data to Thingspeak
Lab8: Thingspeak
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• A machine-to-machine (M2M)/ IoT protocol.
• Lightweight publish/subscribe messaging.
• Small sensors and mobile devices.
• mqtt.org
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MQTT
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IFTTT
Source: IFTTT.COM
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Real World Applications Wireless Emergency Whistle
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Real World Applications Smart Socks for Diabetics
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End
ATMs are considered some of the first IoT objects, and went online as far back as 1974.
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