List of contributors,
Inventor :Tan Siew Chin, Tan Yit Peng, Tan Wee Heng Supervisor : Dr Chia Kim Seng
Department of Mechatronic and Robotic Engineering, Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia.
Step 1: Material Preparation
For this tutorial, we require these items:
1. ESP 8266 NodeMCU Microcontroller
2. Smoke sensor MQ2
3. Temperature sensor TMP36
Step 2: Disassemble the Smoke Detector
1. Disassemble the current Smoke detector in your house by taking out the component inside and keep the casing
Step 3: Hardware Connection
Assembly the component into circuit board and plug in into the current Smoke detector as the diagram below.
Step 4: Install IOT ThingSpeak Monitor Widget Apps
Install the IOT ThingSpeak Monitor Widget apps as shown in figure below from Google Play Store in mobile phone.
Step 5: Sample Source Code
Download this source code and upload to the Arduino.
Step 6: Result
Based on the result, the fire warning detector will send notification to user through ESP8266 when temperature detected is greater than room temperature OR MQ2 detected smoke or combustion gases. The buzzer will sound if both sensors is triggered. It also can send signal when low battery, and control by using smartphone's apps for testing buzzer.