PIR sensor with AC Lamp

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.

PIR Sensor Connection: 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.

In this project demonstration, we will show you how to convert an existing project into a smart project using the ESP32 development board. The ESP-based EzloPi device provides the capability to convert your hardware (projects or devices/sensors) into IoT-capable devices

The following user guide will take you through the steps to make existing Arduino projects into smart projects using ESP MCU-based boards. We can get an understanding of this easy process of converting existing projects into smart EzloPi projects by interfacing with the HC-SR505 mini PIR sensor project.

How to Wire a PIR to a Light The following components are required for interfacing with the EzloPi device:

• ESP32 as an EzloPi smart device.
• Generic KG001 HC-SR501 PIR sensor.
• A 5V single-channel relay module for controlling the circuit.
• AC lamp and holder with wires to connect to AC mains.

PIR Sensor Relay Circuit Diagram The wiring diagram for ESP32 30 pins is represented as follows:

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

From ESP32 to Relay module:

• Connect Vin to the VCC of the relay module.
• Connect the GND of the ESP32 to the GND of the relay module.
• Connect D4 to the signal pin on the relay module.

From ESP32 to PIR sensor:

• Connect the D5 pin to the signal pin of the PIR sensor.
• Connect the GND to the GND of the PIR sensor.
• Connect the 3.3V pin of the ESP32 to the VCC pin of the PIR sensor.

From Relay module to AC load:

• Connect the Normally Open (NO) pin to the AC phase wire.
• Connect the Common (COM) pin to Neutral wire

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

2. Log in using the 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 Digital Output.

7. 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 Light.
• Set Out GPIO to 4.
• Set the Resistor to PULL UP.
• Set the default value to low.
• Check the Button Enable option.
• Set INP GPIO to 5.
• Now Click the Apply button.
• After clicking the apply button you can see a table of your settings in the 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. As seen above on the MiOS mobile dashboard, the bulb tile is turned OFF indicating that there is no motion being detected by the sensor.

6. In the above figure, the device tile and status of the device are indicated whether it is ON or OFF. If anyone comes near the PIR sensor, it will switch on the AC lamp.

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 status of the device is indicated whether it is ON or OFF. If anyone comes near the PIR sensor, it will switch on the AC lamp.

4. As seen above on the web dashboard, the bulb tile is turned OFF indicating that there is no motion being detected.