Eltronicschool. - This is one of the application of Internet of Things for any project such as for building air pollution mater with digital dashboard on smartphone using Blynk appication.
The main component are used to build this project are temperature and humidity sensor DHT11, Arduino UNO with Ethernet shield, PM2.5/PM10 sensor (SDS011), and power supply.
For the application (App) as the web server using Blynk. Blynk is an Internet of Things (IoT) platform to control Arduino, Raspberry Pi and the like over the Internet. In this project Blynk provides a digital dashboard on your smartphone that displays real-time air quality readings for the immediate surroundings.
Blynk is not meant for a specific board or shield. It will get you online and ready for the IoT, irrespective of whether Arduino or Raspberry Pi is linked to the Internet over Wi-Fi, Ethernet or an ESP8266 chip.
In this project, we will show you about the circuit schematic of the IoT enabled air pollution meter with digital dashboard, main component used, and the global description about this project.
Circuit Schematic
Component Part
Circuit schematic like in Figure 1 above is the IoT enabled air pollution meter with digital dashboard. Electronicsforu site describe that Heart of the circuit is Arduino Uno board with Arduino shield. Other components used are voltage regulators 7805 (IC1 and IC2), temperature and humidity module DHT11 connected to connector CON3, gas sensor MQ135 connected to connector CON2, PM2.5/PM10 sensor connected to connector CON1 and a few others.
PM2.5/PM10 sensor (SDS011)
Particle pollution, also called particulate matter (or PM), is a mixture of solid particles and liquid droplets floating in the air. Some particles are released directly from a specific source, while others are formed in complicated chemical reactions in the atmosphere.
The PM2.5/PM10 sensor connected across CON1 was developed by INOVAFIT, which is a spin-off from University of Jinan, China. It uses the principle of laser scattering in the air, and can detect suspended particulate matter concentration ranging from 0.3 to 10 microns. Data collected by the sensor is stable and reliable. SDS011 sensor is connected to UART port (TX and RX) of Arduino Uno board.
Gas sensor (MQ135)
Sensitive material of the sensor is tin-dioxide, whose conductivity increases with the concentration of gas. Change in conductivity is converted into output voltage signal, which varies corresponding to the concentration of combustible gas. MQ135 is highly sensitive to ammonia, sulphide and benzene steams, smoke and other harmful gases. It is a low-cost sensor, suitable for different applications. Output of the gas sensor is connected to analogue input pin A3 of Arduino Uno board through connector CON2.
Temperature and humidity sensor (DHT11)
This composite sensor contains calibrated digital signal outputs of temperature and humidity. Connected to connector CON3, it includes a resistive-type humidity measurement component and an NTC temperature-measurement device. Its output pin is connected to digital pin 5 of Arduino Uno board. It is a relatively inexpensive sensor for its performance.
The main component are used to build this project are temperature and humidity sensor DHT11, Arduino UNO with Ethernet shield, PM2.5/PM10 sensor (SDS011), and power supply.
For the application (App) as the web server using Blynk. Blynk is an Internet of Things (IoT) platform to control Arduino, Raspberry Pi and the like over the Internet. In this project Blynk provides a digital dashboard on your smartphone that displays real-time air quality readings for the immediate surroundings.
Blynk is not meant for a specific board or shield. It will get you online and ready for the IoT, irrespective of whether Arduino or Raspberry Pi is linked to the Internet over Wi-Fi, Ethernet or an ESP8266 chip.
In this project, we will show you about the circuit schematic of the IoT enabled air pollution meter with digital dashboard, main component used, and the global description about this project.
Circuit Schematic
- Temperature and humidity sensor DHT11,
- Arduino UNO with Ethernet shield,
- PM2.5/PM10 sensor (SDS011), and
- Power Supply
Circuit schematic like in Figure 1 above is the IoT enabled air pollution meter with digital dashboard. Electronicsforu site describe that Heart of the circuit is Arduino Uno board with Arduino shield. Other components used are voltage regulators 7805 (IC1 and IC2), temperature and humidity module DHT11 connected to connector CON3, gas sensor MQ135 connected to connector CON2, PM2.5/PM10 sensor connected to connector CON1 and a few others.
PM2.5/PM10 sensor (SDS011)
Particle pollution, also called particulate matter (or PM), is a mixture of solid particles and liquid droplets floating in the air. Some particles are released directly from a specific source, while others are formed in complicated chemical reactions in the atmosphere.
The PM2.5/PM10 sensor connected across CON1 was developed by INOVAFIT, which is a spin-off from University of Jinan, China. It uses the principle of laser scattering in the air, and can detect suspended particulate matter concentration ranging from 0.3 to 10 microns. Data collected by the sensor is stable and reliable. SDS011 sensor is connected to UART port (TX and RX) of Arduino Uno board.
Gas sensor (MQ135)
Sensitive material of the sensor is tin-dioxide, whose conductivity increases with the concentration of gas. Change in conductivity is converted into output voltage signal, which varies corresponding to the concentration of combustible gas. MQ135 is highly sensitive to ammonia, sulphide and benzene steams, smoke and other harmful gases. It is a low-cost sensor, suitable for different applications. Output of the gas sensor is connected to analogue input pin A3 of Arduino Uno board through connector CON2.
Temperature and humidity sensor (DHT11)
This composite sensor contains calibrated digital signal outputs of temperature and humidity. Connected to connector CON3, it includes a resistive-type humidity measurement component and an NTC temperature-measurement device. Its output pin is connected to digital pin 5 of Arduino Uno board. It is a relatively inexpensive sensor for its performance.
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