Summary of Live Temperature and Humidity Monitoring over Internet using Arduino and ThingSpeak
This IoT project monitors ambient humidity and temperature using a DHT11 sensor, Arduino Uno, ESP8266 Wi-Fi module, and LCD. The system displays data locally while transmitting it to the ThingSpeak server for remote visualization via graphs. Users create a public channel on ThingSpeak, configure fields for humidity and temperature, and utilize Write API keys within the code to enable real-time global monitoring.
Parts used in the IoT Humidity and Temperature Monitor:
- Arduino Uno
- DHT11 Sensor Module
- ESP8266 WIFI Module
- LCD Display
- ThingSpeak Server
Humidity and Temperature are very common parameters for measuring at many places like farm, green house, medical, industries home and offices. We have already covered Humidity and Temperature Measurement using Arduino and displayed the data on LCD.
In this IoT project we are going to Monitor Humidity and Temperature over the internet using ThingSpeak where we will show the current Humidity & Temperature data over the Internet using the ThingSpeak server. It is accomplished by the data communications between Arduino, DHT11 Sensor Module, ESP8266 WIFI module and LCD. Celsius scale thermometer and percentage scale humidity meter displays the ambient temperature and humidity through a LCD display and also sends it to ThingSpeak server for live monitoring from anywhere in the world.
Working and ThingSpeak Setup:
This IoT based project having four sections, firstly Humidity and Temperature Sensor DHT11 senses the Humidity and Temperature Data. Secondly Arduino Uno extracts the DHT11 sensor’s data as suitable number in percentage and Celsius scale, and sends it to Wi-Fi Module. Thirdly Wi-Fi Module ESP8266 sends the data to ThingSpeak’s Sever. And finally ThingSpeak analyses the data and shows it in a Graph form. Optional LCD is also used to display the Temperature and Humidity.
ThingSpeak provides very good tool for IoT based projects for Arduino. By using ThingSpeak site, we can monitor our data over the Internet from anywhere, and we can also control our system over the Internet, using the Channels and webpages provided by ThingSpeak. ThingSpeak ‘Collects’ the data from the sensors, ‘Analyze and Visualize’ the data and ‘Acts’ by triggering a reaction. Here we are explaining about How to send Data to ThingSpeak server by using ESP8266 WIFI Module:
1. First of all, user needs to Create a Account on ThingSpeak.com, then Sign In and click on Get Started.
2. Now go to the ‘Channels’ menu and click on New Channel option on the same page for further process.
3. Now you will see a form for creating the channel, fill in the Name and Description as per your choice. Then fill ‘Humidity’ and ‘Temperature’ in Field 1 and Field 2 labels, tick the checkboxes for both Fields. Also tick the check box for ‘Make Public’ option below in the form and finally Save the Channel. Now your new channel has been created.
4. Now click on ‘API keys’ tab and save the Write and Read API keys, here we are only using Write key. You need to Copy this key in char *api_key in the Code.
Read More: Live Temperature and Humidity Monitoring over Internet using Arduino and ThingSpeak
- What parameters does this project measure?
The project measures humidity and temperature. - How is the data sent to the internet?
Data is sent from the Arduino to the ThingSpeak server via the ESP8266 Wi-Fi module. - Can I view the data from anywhere?
Yes, you can monitor the data over the Internet from anywhere in the world using ThingSpeak. - What do Field 1 and Field 2 represent in the ThingSpeak channel?
Field 1 represents Humidity and Field 2 represents Temperature. - Which API key is required for sending data?
You need to use the Write API key to send data to the server. - Does the project display data locally?
Yes, an optional LCD display shows the current temperature and humidity. - What happens to the data after it reaches ThingSpeak?
ThingSpeak analyzes the data and shows it in a graph form. - Is the created channel private or public?
The guide instructs users to tick the Make Public checkbox when creating the channel.
