Home Automation 4 Channel using AP

Home Automation with NodeMCU and 4 Relays

Our device will create hotspot. User have to connect it with mobile. One page will open on mobile, there is button’s to control device’s. Also watch below video.

Building a home automation system with a NodeMCU (ESP8266-12E) and 4 relays to control devices through an access point is an exciting project! Here’s a breakdown to get you started:

Components:

• NodeMCU: Choose a good quality version with stable performance.
• 4-Channel Relay Module: Ensure it suits your device’s power requirements and offers proper isolation.
• Power Supply: Adequately power both the NodeMCU and relay module.
• Jumper Wires: Connect components and devices.
• Devices to Control: Lights, fans, appliances, etc., depending on your needs.
• Wi-Fi Access Point: Existing network for the NodeMCU to connect.

Software:

• Arduino IDE: For programming the NodeMCU with control logic.
• Web Server Libraries (Optional): Allow control via web interface on phone/computer.
• Mobile Apps (Optional): Create custom apps for mobile control.

Steps:

1. Hardware Connection:

   • Follow module instructions to connect NodeMCU, relay module, power supply, and devices.
   • Safety first: Use proper insulation and grounding. Double-check power ratings. Consider fuses/surge protection.

2. Programming:

   • Write code in Arduino IDE for desired control logic (e.g., button presses, web commands).
   • Set up relay outputs based on inputs (digital pins).
   • Consider incorporating security measures for remote control.

3. Optional Web Server:

   • Use libraries like ESPAsyncWebServer to enable web interface control.
   • Design a user-friendly interface for turning devices on/off.

4. Optional Mobile App:

   • Use platforms like Blynk or MIT App Inventor to create control buttons.
   • Develop communication between app and NodeMCU using Wi-Fi protocols.

5. Testing & Refinement:

   • Thoroughly test for safe and reliable operation.
   • Refine code, connections, and functionalities as needed.

Remember:

• Adapt based on your specific needs and chosen components.
• Prioritize safety throughout the process.
• Enjoy the learning and DIY experience!

Feel free to ask if you have further questions or need specific guidance on any step!