Door monitoring using MC-38 magnetic door switch and LED indicator

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 aims to interface an MC-38 magnetic door sensor with the EzloPi smart device to detect and monitor the status of a door in real-time. Additionally, an LED indicator is integrated to visually signal when the door is opened. This project will enable users to monitor the door status changes and also provide LED indication, enhancing security and convenience in various applications such as home automation, office security, or industrial monitoring. Moreover, the door status can also be monitored through the MiOS smart application for mobile and web platforms.

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

• ESP32 as an EzloPi smart device.
• MC-38 Magnetic door switch.
• LED
• Resistor 220 Ohms

The wiring diagram of ESP32 is represented as follows:

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

From ESP32 to the MC-38 Magnetic door switch:

From ESP32 to LED & Resistor:

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 Digital Input..

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

• Set a device name of your choosing. In our case, we set it to the Door Sensor.
• Set the INPUT GPIO input pin to 4.
• Set device Subtype to Reed Switch.
• Set the Resistor Setting to PULL UP.
• Set the default value to LOW.
• Then Click Apply Button.

8. Again, In the Device Configuration, tab click on Digital Output.

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

• Set a device name of your choosing. In our case, we set it to LED.
• Set Device subtype to LED.
• Set OUT GPIO to 5.
• Set Resistor to PULL UP.
• Set the default value to LOW.
• 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.”

11. 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.”

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

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

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

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

3. As seen in the MiOS web dashboard above, the door sensor tile is visible with the message “Closed” which means that the door sensor is detecting a magnetic field.

MeshBots:

4. On the right side of the screen under Automation, click on MeshBots.

5. On meshbot screen, click on Create new MeshBot button present on the top right corner of the screen.

6. After clicking on Create new MeshBot you will see this now under Automation MeshBot click on Cloud.

7. On the next screen you will see that we can create a name of our choosing, in this case we write it as Door with LED..

8. In the trigger tab you can set the TRIGGER for your device and in the ACTION tab you can set the action to be performed based on the trigger which you have created.

9. Set these values in TRIGGER section:

• Set Node Type to Device.
• Set the Node to Door Sensor.
• Set the Capability to Dw state.
• Set the value to dw_is_opened.

10. Set these values in the ACTION section.

• Click on the True part of the Add Action section.
• Set Node Type to Device.
• Set Controllable Type to LED.
• Set the Capability Type to switch.
• Set the Value to true.
• Set Action immediately.
• Now Click the Save button.

11. After clicking the save button you can see this screen on the top right corner of the screen.

12. Here you can see your saved MeshBot. Now click on Dashboard.

13. Now, as seen in the MiOS web dashboard above, the door sensor tile is visible with the message “Open” which means that the door sensor is not detecting magnetic fields resulting in the LED to turn ON.

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:

5. After opening the MiOS mobile dashboard, you will be able to see the tile of your connected device.

6. As seen in the MiOS mobile dashboard, the door sensor tile is visible with the message “Closed” which means that the door sensor is detecting a magnetic field therefore the LED will remain OFF.

7. Now, as seen in the MiOS mobile dashboard above, the door sensor tile is visible with the message “Open” which means that the door sensor is not detecting magnetic fields resulting in the LED to turn ON.