You probably know of the importance of a fire and motion alarm system in our homes, offices, and commercial buildings. This project is basically going to give you a Fire Alarm and motion detection Notification System which will detect nearby flame and inform you by sending a message provided by Blynk to your smartphone. 

Safety Warning: You should NOT use this as a primary safety device. In fact, I wouldn’t wire this into any primary system at all, I would have this completely separate from any other smoke detection system. I’m running mine from the battery and have it as an entirely separate device in addition to my primary smoke detectors.

Components Required:

• NodeMCU ESP8266 x 1
• DFRobot Gravity: Analog Flame Sensor For Arduino ×1
• HC-SR501 Infrared PIR Motion Sensor x 1
• Jumper wires ×1 
• Breadboard ×1

Before moving forward, let’s talk a bit about the NodeMCU ESP8266, which is an open-source IoT platform that includes firmware that runs on low-cost Wi-Fi enabled ESP8266 Wi-Fi SoC from Espressif Systems. It also includes hardware based on the ERP-12 module of the NodeMCU.

Connecting the Flame Sensor and Motion Sensor to the NodeMCU

To connect the flame sensor to the NodeMCU, follow the following steps. 

• First off, connect the GND pin of the NodeMCU to the G pin of the flame and Motion sensor. 
• Next, connect the Vin pin of the NodeMCU to the VCC(+) pin of the flame and motion sensor.
• Finally, connect the D1 pin of the NodeMCU to the D0 pin of the flame sensor. 

Setting up the Blynk App

Before we can proceed, we have to set up the Blynk app. 

• First off, download the app to your smartphone.
• Once downloaded open the app and log in using your email/FB. 
• Once you log in, create a ‘’New Project’. Name the project as required.Next, choose the device you’re connecting i.e. NodeMCU ESP8266.
• You will receive an Auth Token via email. Copy it. 
• Include a widget for ‘Push Notification’.
• Click the ‘Play’ button i.e. the triangle at the upper right corner. 
• The Blynk app will notify you that the NodeMCU is offline. 
• Now you’ll have to upload the complete code to your Arduino IDE. Also include the blynk library from here: https://github.com/blynkkk/blynk-library

For Source code and more Detail Visit Electronicslvoers.com