Smart water level monitoring with email notification using P45 float switch

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.

This project aims to interface a P45 float switch with the EzloPi device for efficient water level detection. The P45 float switch is a simple yet effective liquid level sensor, which is integrated with the EzloPi device to enable real-time monitoring of water levels in various applications for users. This smart monitoring is done by utilizing the MiOS smart platform for allowing the users to monitor and notify them about various water level conditions. Subsequently, the user is notified via email when the water levels increase above a certain threshold.

The float switch, when interfaced with the EzloPi device, can have many applications for smart automation purposes such as it can accurately detect water levels in tanks for management of water resources. It can also monitor water levels for triggering the operation of motors such as pumps or valves, for optimal water usage and preventing overflow or shortages.

Welcome to the project demonstration video section. The following video showcases the key aspects of Smart water level monitoring with email notification using P45 float switch, providing a visual walkthrough of its implementation.

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

• ESP32 as an EzloPi smart device.
• P45 float switch.

The wiring diagram of ESP32 30 pin is represented as follows:

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

From ESP32 to the Float Switch:

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 Digital Input.

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

• Set Device name to Button 1.
• Set OUT GPIO to 15.
• Set Device subtype to Digital In Switch / Button / Key.
• Set the default value to LOW.
• Then Click Apply Button.

8. In the Device Configuration, tab click on Digital Input.

23. 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.”

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

25. 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 float switch tile is visible. It will show messages like “water_level_ok” or “water_level_above_high_threshold” when operational. The user will get notified via email when the water level reaches a set threshold.

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 new options, now under Notification MeshBot click on Create.

7. On the next screen you will see that we can create a name of our choosing, in this case we write it as Test001.

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 Float Switch.
• Set the Capability to Water level alarm.
• Set the value to water_level_above_high_threshold.

10. Set these values in the ACTION section.

• Set Controllable Type to Notification.
• Set the User to Your user account.
• Set the Channels to email, push.
• Set the Subject to Water Level Alert.
• Write the suitable Message body that you want to receive in your email. As you can see, we write, Water is above threshold level.
• After clicking the apply button you can see a table of your setting in the Current configuration tab.

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. As seen in the MiOS web dashboard above, the float switch sensor tile is visible with the message “Water_level_ok” which means that the float switch is not triggered or not detecting water.

14. Now, the float switch sensor tile is visible with the message “Water_level_above_high_threshold” which means that the float switch is triggered or detecting water and an automated email is sent to the user as seen below.

15. As we can see we have received email through Meshbot when a water level is above threshold level..

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 dashboard, you will be able to see the tile of your connected device.

6. As seen in the MiOS mobile app above, the float switch sensor tile is visible with the message “Water_level_ok” which means that the float switch is not triggered or not detecting water.

7. Now, the float switch sensor tile is visible with the message “Water_level_above_high_threshold” which means that the float switch is triggered or detecting water and an automated email is sent to the user as seen below.