PIR 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.

1. About this example

In this example, the use of a PIR sensor is demonstrated. The HC-SR501 Passive Infrared (PIR) sensor is a widely used motion detection module that can be integrated with an EzloPi device. This sensor is commonly used in security systems, home automation, and other applications where detecting human presence or movement is essential.

When interfaced with an EzloPi device, this sensor can enhance the functionality of your home automation system. The EzloPi device serves as a controller, allowing you to connect and manage various smart devices in your home and ultimately automate actions based on detected motion.

2. Circuit Setup & Interfacing

The following components are required for interfacing the PIR sensor using the EzloPi device:

  • ESP32 as EzloPi smart device.
  • HC-SR501 Passive Infrared (PIR) sensor

The wiring diagram is represented as follows:

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

From ESP32 to the PIR Sensor:

  • Connect the 3V3 pin to the VCC pin of the PIR sensor.
  • Connect the IO4 pin from the ESP32 to the output/DOUT pin.
  • Connect the GND from the ESP32 to the GND pin of the PIR sensor.

3. Interfacing the PIR Sensor using EzloPi Web Flasher

  1. Set up your device/hardware by visiting config.ezlopi.com
Interfacing LED Web Flasher
  1. Log in using the credentials which you just set earlier while signing up.
Login Dashboard
  1. Now click on Connect Device and a pop-up window will appear
Connect Device Button
  1. Now, select COM Port to which your ESP32 device is connected. In our case, the COM3 port is used.

    Click Connect.

Configuration Selection
  1. If you are new to this and it’s your first time configuring, select Create new Device ID. Enter Wifi SSID and Wifi Password.
  2. In the Device Configuration, tab click on digital input.
  1. A pop up window will open for inputting the following parameters.
  • Set a device name of your choosing. In our case we set it to PIR
  • Set Out GPIO to 4
  • Select The Device Subtype as the sensor you are choosing. In our case, we set it to PIR Sensor
  • Set the Resistor to PULL DOWN
  • Set the Default Value to LOW.
  • Now Click the 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.
  1. A window will appear on the bottom left side of the screen displaying “Please press BOOT button while flashing begins.”
  2. Hold the BOOT button down until the next window appears on the bottom left side of the screen which says “Installation prepared. Please release the boot button now.”
  1. Release the BOOT button from your ESP32 when this pop-up on the bottom right window appears.
  1. After some time this popup will appear saying Device Flashed Successfully! This means that your device has been set up successfully.

4. MiOS App

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

Google PlayApple App Store
  1. After downloading the app, proceed to install the application and open it.
MiOS Installed App
  1. 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.
MiOS Login
  1. 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.
MiOS App Mobile
  1. 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:
  1. After opening the dashboard, you will be able to see the tile of your connected device.
  2. Here, we can see the motion sensor tile. The above figure indicates that the sensor is detecting the motion.

5. MiOS Web Application

  1. After configuring the controller with the EzloPi web flasher, head to ezlogic.mios.com
  1. Use the same credentials to log in that you used for configuring the controller with the web flasher.
  1. The tile on the dashboard shows whether motion is being detected by the sensor. When “no motion” is being detected then the tile appears like in the above picture.
  1. In the above figure, the tile indicates that the motion is being detected by the sensor.
Buy Components

eZlopie Products A single-channel 5V relay module $00.00

eZlopie Products Momentary switch $00.00

eZlopie Products Level Shifter Module (BSS138) $00.00

eZlopie Products ESP32

eZlopie Products AC Lamp and Holder