Welcome to Techal, where we bring you the latest advancements in technology. In this article, we will explore the fascinating world of home automation using NodeMCU and Blynk. With this project, you can control your home appliances, monitor temperature, and even create an automated system that adjusts to your preferences. Let’s dive in!
Contents
Building a Smart Extension Box
Imagine having complete control over your home appliances from the touch of your smartphone. With NodeMCU and Blynk, this becomes a reality. By setting up a smart extension box, you can easily control various home appliances, monitor temperature and humidity, and create an automated system that adjusts to your needs.
Components Needed
To get started, you will need the following components:
- NodeMCU board
- DHT11 sensor
- LDR (Light Dependent Resistor)
- 1.3-inch or 0.96-inch OLED display
- Relay module
Wiring the Circuit
To ensure a professional and compact setup, we recommend designing a custom PCB for this project. You can easily create the PCB using the provided circuit diagram and our suggested layout. Alternatively, you can order a custom design PCB from JLC PCB for a high-quality and affordable option.
Setting Up Blynk App
To control your smart extension box from your smartphone, you will need to configure the Blynk app. Follow these steps:
- Download the Blynk app from the Google Play Store or App Store.
- Create a new project and name it.
- Select “NodeMCU” as the device and choose the Wi-Fi connection type.
- Blynk will send an authentication token to your registered email address, which you will need for the code.
Programming the NodeMCU
Depending on the OLED display you are using, you will need to upload the appropriate code. We provide code for both 1.3-inch and 0.96-inch OLED displays. The code includes settings for auto mode, where relay one controls the room temperature and relay two adjusts to the ambient light. You can customize these settings to suit your needs. Make sure to copy and paste the authentication token provided by Blynk into the code.
Controlling Your Smart Extension Box
Once you have uploaded the code to your NodeMCU and made the necessary connections, you are ready to control your smart extension box. With the Blynk app, you can easily monitor the temperature and humidity readings on your smartphone. Additionally, you can control the relay modules, toggle between manual and auto mode, and even set temperature and light thresholds.
FAQs
Q: Can I use a different display for this project?
A: Yes, you can use either a 1.3-inch or 0.96-inch OLED display, depending on your preference.
Q: Can I control appliances other than lamps?
A: Absolutely! You can connect any home appliance to the relay modules and control them through the Blynk app or touch sensors.
Q: How do I switch between manual and auto mode?
A: You can switch between manual and auto mode either through the Blynk app or by pressing the touch sensor button on the smart extension box.
Q: Can I customize the temperature and light thresholds?
A: Yes, you can adjust the maximum and minimum temperature and light values in the code according to your requirements.
Conclusion
Home automation using NodeMCU and Blynk opens up a world of possibilities for controlling and monitoring your home. By building a smart extension box, you can easily control appliances, monitor temperature and humidity, and create an automated system tailored to your preferences. The combination of NodeMCU and Blynk provides a seamless and user-friendly experience for transforming your home into a smart and efficient living space. For more exciting technology updates, visit Techal.
