Arduino Nano with DS18B20 & OLED Display | KitKraft Temperature Monitoring Project

In this project, we’ll create a temperature monitoring system using an Arduino Nano, a DS18B20 temperature sensor, and a 0.96-inch OLED display. This setup allows you to accurately measure the ambient temperature and display it in real-time, making it an ideal project for weather stations, home automation systems, or even scientific experiments.

Components Required

To build this project, you’ll need the following components:

• Arduino Nano: The microcontroller that reads the temperature data and sends it to the display.
• DS18B20 Temperature Sensor: A digital temperature sensor that provides precise readings.
• 0.96-inch OLED Display: Displays the temperature data in real-time.
• 4.7kΩ Resistor: Pull-up resistor for the DS18B20 sensor.
• Jumper Wires: For making the connections.
• Breadboard: To prototype the circuit.
• USB Cable: To upload the code and power the Arduino.

How It Works

The DS18B20 sensor communicates with the Arduino Nano using the One-Wire protocol, which allows multiple devices to communicate using just one data line. The sensor provides highly accurate temperature readings, which are then processed by the Arduino. The temperature is displayed on the OLED screen, which can show it in both Celsius and Fahrenheit.

This project is great for monitoring environmental conditions in real time. Whether you're monitoring the temperature of a room, an outdoor space, or even a controlled environment like a greenhouse, this system provides precise and reliable readings.

Circuit Diagram

To connect the DS18B20 and OLED display to the Arduino Nano:

• DS18B20 Sensor:
  • VCC to 5V on the Arduino,
  • GND to GND,
  • Data pin to D2 (with a 4.7kΩ pull-up resistor between the data line and VCC).
• OLED Display:
  • VCC to 5V,
  • GND to GND,
  • SCL to A5,
  • SDA to A4.

This simple wiring ensures that both the temperature sensor and display work seamlessly with the Arduino Nano.

Project Steps:

1. Connect the Hardware: Set up the DS18B20 sensor and OLED display as described above. Use a breadboard to easily prototype the connections.

2. Upload the Code: After wiring, upload the code to the Arduino Nano. The code reads temperature data from the DS18B20 sensor and displays it on the OLED screen.

3. Monitor the Temperature: Once the system is powered up, the temperature readings will appear in real-time on the OLED display. You can see live updates of the ambient temperature.

Applications

• Home Automation: Integrate the temperature monitoring system into a smart home setup to maintain ideal room conditions.
• Greenhouses: Monitor the temperature in greenhouses to ensure plants are growing in optimal conditions.
• Weather Stations: Use this as part of a larger weather station to track environmental data.
• Scientific Experiments: Monitor temperature in labs or controlled environments for precise data.

Enhancements

You can expand this project in various ways:

• Data Logging: Store temperature data over time using an SD card module.
• IoT Integration: Use a Wi-Fi module (like ESP8266) to upload real-time temperature data to the cloud.
• Multi-Sensor Setup: Add more DS18B20 sensors to monitor temperatures in multiple locations using the same Arduino Nano.
• Alarms and Notifications: Set up buzzer or LED notifications if the temperature crosses a certain threshold.

Conclusion

This Arduino Nano with DS18B20 temperature monitoring project is an excellent introduction to working with sensors and displays. It's easy to set up and provides real-time, accurate temperature readings. The project can be expanded and integrated into larger systems, making it highly versatile for various applications, from home automation to scientific monitoring.

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Watch the Project in Action: Watch on YouTube Shorts
For Code & Schematics: Click Here