Automated LED lamp control using LDR digital 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 improve lighting efficiency using a digital LDR (Light Dependent Resistor) sensor integrated with the EzloPi device. The digital LDR sensor will detect ambient light levels, allowing for automatic state control of the LED lamp for applications where lighting automation is required such as street lights or smart homes depending on the environment light intensity. Through EzloPi, this project enables remote monitoring and control of the LED lamps.

This offers significant energy savings by optimizing light output based on real-time environmental conditions, reducing unnecessary energy consumption. Additionally, it enhances safety by ensuring adequate illumination levels during low-light conditions. Overall, the integration of digital LDR sensors with EzloPi presents a cost-effective and sustainable solution for efficient lighting management.

Welcome to the project demonstration video section. The following video showcases the key aspects of Automated LED lamp control using LDR digital sensor, providing a visual walkthrough of its implementation.

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

• ESP32 as an EzloPi smart device.
• LM393 based 4-pin photoresistor sensor module.
• XY-MOS, high-power dual MOSFET driver module.
• 24 LEDs mini lamp.

The wiring diagram is represented as follows:

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

From ESP32 to LDR Module:

From ESP32 to the MOSFET driver module:

From MOSFET driver module to 24 LEDs mini lamp:

1. Set up your device/hardware by visiting https://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 LDR.
• Set Device subtype to LDR Sensor (Digital).
• Set OUT GPIO to 4.
• 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 the 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.

11. 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. Now, on the MiOS web dashboard, you will be able to see the tile for the LED. The tile will indicate the status of the LED depending on the light being detected by the LDR sensor.

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 Automation MeshBot click on Local.

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

• Set Node Type to Device.
• Set the Node to LDR.
• Set the Capability to Switch.
• Set the value to True.

10. Set these values in the True part of the ACTION section.

• Set Controllable Type to Device.
• Set the Controllable to LED.
• Set the Capability to switch.
• Set the Value to true.

11. Set these values in the False part of the ACTION section.

• Set Controllable Type to Device.
• Set the Controllable to LED.
• Set the Capability to switch.
• Set the Value to false.
• Now Click the Save button.

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

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

14. Here in the MiOS web dashboard, you can see that when the LDR sensor gets very little or no light. The LED lamp turns on because of the rules we have set in meshbot.

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. Now, on the MiOS mobile dashboard, you will be able to see the tile for the LED. The tile will indicate the status of the LED depending on the light being detected by the LDR sensor.

5. Here, as seen on the MiOS mobile dashboard, when the LDR Sensor gets very little or no light, the LED lights up because of the rules we have set in meshbot.