WiFi Internet of Things Arduino Learning Kit Lesson 8: Gas Detection

• OBJECTIVE
• PARTS AND DEVICES
• HOW TO MAKE
• HOW TO CODE
• HOW TO PLAY
• RESULT

Smoke Detectors are very useful in detecting smoke or fire in buildings, and so are the important safety parameters. It sensible to to flammable gas: Alcohol, and Methane etc. The voltage that the sensor outputs change according to the smoke/gas level that exists in the atmosphere. The sensor outputs a voltage that is proportional to the concentration of smoke/gas. In other words, the relationship between voltage and gas concentration is as following:

• The greater the gas concentration, the greater the output voltage
• The lower the gas concentration, the lower the output voltage

In this DIY Lesson, we’ll learn how to monitor the smoke detector from remote browser

• Arduino UNO board x 1
• OSOYOO ESP8266 WIFI Shield x 1
• Gas sensor module x 1
• USB cable x 1
• Jumper wires several

First, please insert the ESP8266 wifi Shield into your UNO board,

Software Installation:
Step A）Install latest Arduino IDE (If you have Arduino IDE version after 1.1.16, please skip this step).Download Arduino IDE from https://www.arduino.cc/en/Main/Software?setlang=en, then install the software.

Step B) Connect the Arduino UNO board to computer via USB cable,

Step C) Open the Arduino IDE and choose corresponding board type and port type for you project.

• Board:”Arduino/Genuino UNO”
• Port: Choose your own Serial Port for your UNO board

Step D)Download the sketch file fromhttps://osoyoo.com/driver/Esp8266_Arduino_IOT/lesson8/esp8266-lesson8.zip

unzip the file and double click the esp8266-lesson8.ino file, find following lines:

char ssid[] = "******"; // your network SSID (name)
char pass[] = "******"; // your network password

please replace the ****** with your correct wifi SSID and password, otherwise your project can
 not connect to Internet.

Step E) After change above lines, load the sketch into Arduino IDE.

Open your Serial Monitor, you can see your router will assign an IP address to your Arduino as
 following:

In above example, 192.168.50.116 is the IP address of my Arduino.
Now use another computer or your cell phone’s  browser to visit url : http://192.168.50.116

Your browser will show following result:

Learn More about parts

No.	Picture	Product Name	Link
1		OSOYOO basic board	https://osoyoo.store/products/osoyoo-uno-r3-for-arduino?variant=31955265290351
2		OSOYOO WIFI shield	https://osoyoo.store/products/esp8266-wifi-shiled-osoyoo-wifi-internet-of-things-learning-kit-for-arduino-uno?variant=31955252215919
3		Photoresistor Sensor Module	https://osoyoo.store/products/photoresistor-sensor-module-light-detection-digital-switch-mete-for-arduino?variant=31955271057519
4		Water Level Detection Sensor	https://osoyoo.store/products/rain-water-level-sensor-module-detection-liquid-surface-depth-height-for-arduino?variant=31955273810031
5		Sound Detection Sensor Module	https://osoyoo.store/products/high-sensitivity-sound-microphone-sensor-detection-module-for-arduino-avr-pic?variant=31955278921839
6		Ultrasonic sensor	https://osoyoo.store/products/hc-sr04-ultrasonic-sensor-module-for-arduino?variant=31957815558255
7		Servo motor	https://osoyoo.store/products/sg90-micro-servo-for-arduino-raspberry-pi-robot?variant=31957821096047
8		Active Buzzer Module	https://osoyoo.store/products/buzzer-sensor-module-for-esp8266-iot-kit?variant=31955947225199
9		Temperature&Humidity Sensor	https://osoyoo.store/products/dht11-temperature-humidity-sensor-module-for-arduino?variant=31955953221743
10		Relay Module	https://osoyoo.store/products/single-channel-relay-module-for-arduino-raspberry-pi?variant=31955954401391
11		Gas Sensor Module	https://osoyoo.store/products/mq-2-smoke-sensor-for-arduino?variant=31955955417199
12		Digital Barometric Pressure Sensor Module	https://osoyoo.store/products/bmp180-high-precision-pressure-sensor-for-arduino?variant=31957739339887
13		Infrared Sensor Module	https://osoyoo.store/products/hc-sr501-pir-motion-sensor-for-arduino?variant=31957812838511
14		LED(6 x White, 6 x Red, 6 x Yellow, 6x Green)	https://osoyoo.store/products/led-packs-for-arduino?variant=31957816442991