B179 Voltage 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.

This project aims to enable homeowners to monitor and manage their electrical system voltage levels with the help of a B179 voltage sensor and the EzloPi device. By integrating the B179 voltage sensor into the EzloPi ecosystem, users will have the ability to track voltage variations and create automated responses to maintain the health and safety of their electrical systems.

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

From ESP32 (30 pins) to the voltage sensor:

• ESP32 as an EzloPi smart device.
• B179 Voltage Sensor Module (0 to 25V DC)

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

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

• Connect the GND from the ESP32 to the GND of the voltage sensor.
• Connect the D33 pin from the ESP32 to the pin ‘S’ of the voltage sensor.
• No need to connect the ‘+’ pin of the voltage sensor to the ESP32.

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

2. credentials that 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 the 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 Analog Input..

7. An Analog Input window will open for inputting the following parameters:

• Set a Device Name of your choosing. In our case, we set it to Voltmeter.
• Set Device Subtype to Shunt voltmeter.
• Set the IN GPIO to 33.
• Set the Resolution to 10 bits.
• Now Click the Apply button.
• After clicking the apply button you can see a table of your settings in device configuration tab.
• Press the Flash Device button.

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

9. 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.”

10. 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:

5. After opening the MiOS mobile dashboard, you will be able to see the tile of your connected device. In the above figure, the voltmeter/voltage sensor tile displays the voltages being measured by the sensor.

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 will be able to see the tile of your connected device. In the above figure, the voltmeter/voltage sensor tile displays the voltages being measured by the sensor.