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49 lines
1.9 KiB
Markdown
49 lines
1.9 KiB
Markdown
3 days ago
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# ESP32 Temperature Monitoring Project
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This project involves an ESP32 device using MQTT to send temperature data. The ESP32 is configured with a DS18B20 temperature sensor and connects to an MQTT broker.
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### Requirements
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- ESP32 Development Board
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- DS18B20 Temperature Sensor
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- Arduino IDE with ESP32 support
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- Wi-Fi connection
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### Configuration and Setup
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1. **Install the Arduino IDE**:
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Download and install the Arduino IDE from [Arduino website](https://www.arduino.cc/en/software).
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2. **Add ESP32 Support in Arduino IDE**:
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Follow the instructions [here](https://randomnerdtutorials.com/installing-the-esp32-board-in-arduino-ide-windows-instructions/) to add ESP32 board support to the Arduino IDE.
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3. **Install Required Libraries**:
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Open the Arduino IDE, go to `Sketch` > `Include Library` > `Manage Libraries...`. Install the following libraries:
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- `WiFi`
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- `PubSubClient`
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- `ArduinoJson`
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- `OneWire`
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- `DallasTemperature`
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4. **Configure Wi-Fi and MQTT Settings**:
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Open the provided ESP32 code in Arduino IDE. Modify the following lines with your Wi-Fi and MQTT broker details:
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```cpp
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const char* wifi_ssid = "your_wifi_ssid";
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const char* wifi_password = "your_wifi_password";
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const char* mqtt_broker = "your_mqtt_broker";
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const char* mqtt_username = "your_mqtt_username";
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const char* mqtt_password = "your_mqtt_password";
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```
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5. **Connect the DS18B20 Sensor to ESP32**:
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Connect the DS18B20 sensor to your ESP32:
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- DS18B20 VCC to ESP32 3.3V
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- DS18B20 GND to ESP32 GND
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- DS18B20 Data to ESP32 GPIO 25 (or change `one_wire_bus` in the code if using a different pin)
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6. **Upload the Code**:
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Connect the ESP32 to your computer, select the correct board and port in Arduino IDE, and upload the code.
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7. **Monitor the Temperature Data**:
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Once the code is uploaded, the ESP32 will start sending temperature data to the MQTT broker.
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