Enhanced fire detection using KY-026 Flame sensor & MQ-9 Gas sensor

The EzloPi smart devices provide automation through simple, customizable use with our open-source EzloPi platform, making daily life easier and improving human-machine interactions.

Before moving into this example, it is very important to know about the device registration, provisioning and converting the ESP32 device into an EzloPi device along with knowledge of Web Flasher, MiOS Mobile Application for Android/iOS and the MiOS Web Application.

The project focuses on developing an enhanced fire detection system using the KY-026 flame sensor and MQ-9 gas sensor, integrated with the EzloPi device. The KY-026 sensor detects the presence of flames, while the MQ-9 sensor identifies hazardous gas levels, providing a comprehensive monitoring solution. By leveraging the capabilities of the EzloPi device, this system aims to deliver real-time alerts and improved accuracy in fire detection, making it a valuable tool for early warning and safety in smart homes and industrial settings. Remote monitoring is done using the MiOS smart application platform.

Welcome to the project demonstration video section. The following video showcases the key aspects of Enhanced fire detection using KY-026 Flame sensor & MQ-9 Gas sensor, providing a visual walkthrough of its implementation.

The following components are required for interfacing with the EzloPi device:

• ESP32 as an EzloPi smart device.
• MQ-9 LPG Combustible gas sensor.
• KY-026 Flame sensor module

The wiring diagram for the ESP32 30 pin is represented as below:

The following connections are made in order to complete the circuit setup:

From ESP32 to the MQ9 Combustible gas sensor:

From ESP32 to the KY-026 Flame sensor:

1. Set up your device/hardware by visiting config.ezlopi.com

2. Log in using the credentials which you just set earlier while signing up.

3. Now, click on the Connect Device button and a pop-up window will appear.

4. Now, select COM Port to which your ESP32 device is connected. In our case, the COM3 port is used.

Click Connect

5. If you are new to this and it's your first time configuring, select Create new Device ID. Enter Wifi SSID and Wifi Password.
6. In the Device Configuration, tab click on Other.

7. A window will open for inputting the following parameters:

• Set a device name of your choosing. In our case, we set it to MQ9.
• Set Device subtype to MQ9 LPG Flammable Gas Sensor.
• Select theCheck box of GPIO 1.
• Set GPIO 1 to 25.
• Select the Check box of GPIO 2.
• Set GPIO 2 to 26.
• Then Click Apply Button.

8. Again, In the Device Configuration, tab click on Other.

9. A window will open for inputting the following parameters:

• Set a device name of your choosing. In our case, we set it to Flame Sensor.
• Set Device subtype to KY026 Flame Sensor.
• Check the box of GPIO 1.
• Set GPIO 1 to 32.
• Check the box of GPIO 2.
• Set GPIO 2 to 33.
• Then Click Apply Button.
• After clicking the apply button you can see a table of your setting in the device configuration tab.
• Press the Flash Device button.

10. A window will appear on the bottom right side of the screen displaying “Please press BOOT button while flashing begins.”

10. Hold the BOOT button down until the next window appears on the bottom right side of the screen which says “Installation prepared. Please release the boot button now.”

11. Release the BOOT button from your ESP32 when this pop-up on the bottom right window appears.

11. After some time, a popup will appear saying Device Flashed Successfully! This means that your device has been set up successfully.

You can download the MIOS Android app from the Google Play Store and Apple App Store.

1. After downloading the app, proceed to install the application and open it.

2. Using the MIOS mobile application, create a new Ezlo Cloud account using the sign-up option. If you already have an account, you may proceed to log in.

3. After successfully logging in, you will be able to see the number of controllers connected such as a lamp, fan, or any other device in the MiOS app. Tap on any controller of your desired ID:

4. You will be able to see the status of your controller whether it is online or offline. Access the device dashboard, and tap the device. The following view of the dashboard will appear:

6. After opening the MiOS mobile dashboard, you see the tiles of your connected devices. The MQ9 tile will reflect the concentration readings of the carbon monoxide (CO) as shown above and the KY-026 flame sensor shows the amount of heat it detects and if it's under the set temperature threshold.

6. Now as seen above, the MQ9 detects gas and shows an increased value of the gas on the dashboard tile along with the flame sensor which senses heat and shows the “Overheat detected” message on the tile.

1. After configuring the controller with the EzloPi web flasher, head to ezlogic.mios.com

2. Use the same credentials to log in that you used for configuring the controller with the web flasher.

3. After opening the MiOS web dashboard, you see the tiles of your connected devices. The MQ9 tile will reflect the concentration readings of the carbon monoxide (CO) as shown above and the KY-026 flame sensor shows the amount of heat it detects and if it's under the set temperature threshold.

4. Now as seen above, the MQ9 detects gas and shows an increased value of the gas on the dashboard tile along with the flame sensor which senses heat and shows the “Overheat detected” message on the tile.