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https://github.com/nsswifter/iot-temperature-monitoring
This project simulates a temperature monitoring system using the DHT22 sensor and ESP8266 Wi-Fi module in the Wokwi simulator. The system reads temperature data from the DHT22 sensor and sends it to a mock server for monitoring.
https://github.com/nsswifter/iot-temperature-monitoring
arduino-uno dht dht22 esp8266 iot temperature-monitoring wokwi
Last synced: about 1 month ago
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This project simulates a temperature monitoring system using the DHT22 sensor and ESP8266 Wi-Fi module in the Wokwi simulator. The system reads temperature data from the DHT22 sensor and sends it to a mock server for monitoring.
- Host: GitHub
- URL: https://github.com/nsswifter/iot-temperature-monitoring
- Owner: nsswifter
- License: mit
- Created: 2024-11-29T21:34:57.000Z (about 1 month ago)
- Default Branch: main
- Last Pushed: 2024-11-29T22:00:29.000Z (about 1 month ago)
- Last Synced: 2024-11-29T22:29:23.312Z (about 1 month ago)
- Topics: arduino-uno, dht, dht22, esp8266, iot, temperature-monitoring, wokwi
- Language: C++
- Homepage: https://wokwi.com/projects/415922746755454977
- Size: 0 Bytes
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# IoT Temperature Monitoring
This project is an IoT-based temperature monitoring system that reads temperature data from a **DHT22** sensor and sends it to a remote server using **ESP8266** over a Wi-Fi connection. The data is transmitted via HTTP `POST` requests, enabling remote monitoring of temperature data.
The system is built using an **Arduino Uno** as the microcontroller to interface with the **DHT22** sensor and the **ESP8266** module.
The project was developed and tested using [Wokwi](https://wokwi.com), an online Arduino simulator, and the temperature data is sent to a mock server hosted on [Beeceptor](https://beeceptor.com).
You can view and interact with the simulator project on [Wokwi Simulated Project](https://wokwi.com/projects/415922746755454977).
### Hardware Connections
- **Arduino Uno**: The main controller for the project.
- **DHT22 Sensor**:
- Connected to **GPIO Pin 7** for reading temperature data (Digital Pin).
- The **VCC** pin of the DHT22 is connected to **5V** on the Arduino.
- The **GND** pin of the DHT22 is connected to **GND** on the Arduino.
- **ESP8266** (Wi-Fi Module):
- **TX** of the ESP8266 is connected to **Pin 2** (RX on the Arduino, for communication).
- **RX** of the ESP8266 is connected to **Pin 3** (TX on the Arduino, for communication).
- The **VCC** pin of the ESP8266 is connected to **3.3V** (as the ESP8266 works on 3.3V).
- The **GND** pin of the ESP8266 is connected to **GND** on the Arduino.
### Libraries Needed:
- [DHT Sensor Library](https://github.com/adafruit/DHT-sensor-library)
## Configuration
1. **WiFi Credentials**: Set your Wi-Fi **SSID** and **password** in the code.
```cpp
#define ssid "YourWiFiSSID"
#define password "YourWiFiPassword"
```
2. **Server URL**: Set the **server URL** to where the temperature data will be sent. You can use the following Beeceptor URL for testing:
```cpp
#define serverUrl "iot-temperature-monitoring-mock-server.free.beeceptor.com"
```
For debugging and monitoring the data, you can visit the Beeceptor console at:
[Beeceptor Console](https://app.beeceptor.com/console/iot-temperature-monitoring-mock-server)
## Code Explanation
The core program for this project can be found in the file [sketch.ino](sketch.ino).
### Setup:
- The program starts by initializing the **DHT22** sensor and **ESP8266** Wi-Fi module.
- The **ESP8266** connects to the Wi-Fi network.
### Loop:
- The system reads the temperature from the DHT22 sensor.
- If the temperature is successfully read, it is sent to the server using an HTTP `POST` request.
### Sending Data:
- The temperature data is converted into a string and sent as part of the HTTP `POST` body.
- The **ESP8266** uses AT commands to establish a TCP connection and send the data.
## Example Output
Once the system starts running, the Serial Monitor will display something like this:
```
Initialization Started: ESP8266...
Response: RECEIVED
Response: SUCCESS
Response: SUCCESS
Response: RECEIVED
Initialization Completed: ESP8266
Server URL Console: https://app.beeceptor.com/console/iot-temperature-monitoring-mock-server
Temperature: 24.50°C
HTTP Request: Sending HTTP request...
Response: SUCCESS
Response: RECEIVED
Response: SUCCESS
Temperature: 25.00°C
HTTP Request: Sending HTTP request...
Response: SUCCESS
Response: RECEIVED
Response: SUCCESS
```
## License
This project is open-source and available under the [MIT License](LICENSE).