Obstacle avoidance system with meshbot implementation by using LED and KY-032 sensor

Smart safety and detection with EzloPi!

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Obstacle avoidance system with meshbot implementation by using LED and KY-032 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

The project aims to create an obstacle avoidance system using the KY-032 infrared sensor and an LED, interfaced with the EzloPi device. The KY-032 sensor detects obstacles in front of it using infrared light reflection. When an obstacle is detected, the sensor sends a signal to the EzloPi device, which triggers the LED to light up, serving as an indicator of the obstacle or an object’s presence. Through this project, users can easily visualize when obstacles are detected, enhancing safety in various applications such as robotics or automation. The system provides a simple yet effective solution for obstacle detection and avoidance, integrating seamlessly with the EzloPi platform for versatile applications.

2. Project Video Demonstration

Welcome to the project demonstration video section. The following video showcases the key aspects of Obstacle avoidance system with meshbot implementation by using LED and KY-032 sensor, providing a visual walkthrough of its implementation.

3. Circuit Setup & Interfacing

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

ESP32 as an EzloPi smart device.
KY-032 infrared obstacle avoidance sensor.
LED with Resistor of 220 Ohms.

The wiring diagram is represented as follows:

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

From ESP32 (30 pins) to KY-032:

ESP32	KY-032
GND	GND
D4	OUT

From ESP32 to LED & Resistor:

ESP32	LED	Resistor
GND	Cathode	-
D5	-	1st terminal
-	Anode	2nd terminal

4. Interfacing the float switch with the EzloPi Web Flasher

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

Now, click on the Connect Device button and a pop-up window will appear.

Now, select COM Port to which your ESP32 device is connected. In our case, the COM3 port is used.

Click Connect

If you are new to this and it's your first time configuring, select Create new Device ID. Enter Wifi SSID and Wifi Password.
In the Device Configuration, tab click on Digital Input.

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 IR Proximity Sensor.
Set the Input GPIO to 4.
Set Device Subtype to IR Proximity Sensor.
Now Click the Apply button.

In the Device Configuration, tab click on Digital Output.

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 Resistor to PULL UP.
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.

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

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.”

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

After some time, a popup will appear saying Device Flashed Successfully! This means that your device has been set up successfully.

5. MiOS Web Dashboard

After configuring the controller with the EzloPi web flasher, head to ezlogic.mios.com

Use the same credential to log in that you used for configuring the controller with the web flasher.

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 obstacle being detected by the sensor.

MeshBots:

On the right side of the screen under Automation, click on MeshBots.

On meshbot screen, click on Create new MeshBot button present on the top right corner of the screen.
After clicking on Create new MeshBot you will see new options, now under Automation MeshBot click on Local.

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

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.

Set these things in TRIGGER section:

Set Node Type to Device.
Set the Node to IR Proximity Sensor.
Set the Category to power.
Set the variables to status.
Set the Comparator to Equal (==).
Set the Value Type to value.
Set the value to true.

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.
Set Action to immediately.

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.
Set Action to immediately.
Now Click the Save button.

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

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

Here in the MiOS web dashboard, we can see that when the IR proximity sensor gets triggered or detects an object or obstacle. The LED turns on because of the rules we have set in meshbot.

6. MiOS App

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

After downloading the app, proceed to install the application and open it.

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.

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:

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:

Here, as seen above on the MiOS mobile dashboard, we can see that when the IR proximity sensor gets triggered or detects an object or obstacle. The LED turns on because of the rules we have set in meshbot.

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