Toggle buzzer state on/off using touch 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.

The objective of this project is to create a simple system that utilizes the touch sensor which acts as a toggle switch, allowing users to control the on/off state of the buzzer through a simple touch-based mechanism. A touch on the sensor will trigger the state change, influencing the behavior of the connected buzzer. When the sensor is given a touch input the buzzer will turn on and when the sensor is again touched, it will turn off. This project can be utilized by using meshbots to perform automation tasks on the touch inputs sensed by the sensor according to the conditions set by the user.

Welcome to the project demonstration video section. The following video showcases the key aspects of Create your own touch buzzer using TTP223B sensor module on EzloPi Platform, providing a visual walkthrough of its implementation.

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

• ESP32 as an EzloPi smart device.
• TTP223B touch sensor.
• Buzzer

The wiring diagram for ESP32 30 pins is represented as follows:

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

From ESP32 to Touch sensor TTP223B

From ESP32 to Buzzer

Set up your device/hardware by visiting 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 Touch Sensor.
• Set the Input GPIO to 4.
• Set Device Subtype to Touch Switch (Momentary) TPP223B.
• Now Click the 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 Buzzer.
• Set Device subtype to LED.
• Set OUT GPIO to 15.
• 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.

10. After clicking the apply button you can see a table of your setting below in the Current configuration tab.

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

12. 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.”

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

14. 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 touch sensor and buzzer. The tile will indicate the status of the buzzer depending on the touch input being sensed.

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 this now under Automation MeshBot click on Cloud.

7. On the next screen you will see that we can create a name of our choosing, in this case we write it as Test003.

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 Touch Sensor.
• Set the Category 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 Buzzer.
• Set the Capability to switch.
• Set the Value to true.
• Now Click the Save button.

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

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

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

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

15. Now, you can see in the MiOS web dashboard that when the touch sensor is being touched. The buzzer turns on because of the rules we have set in meshbot. When the touch sensor is touched again, the buzzer will turn off.

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 touch sensor and buzzer. They will function according to rules we have set in meshbot.

7. Now, you can see in the MiOS mobile app dashboard that when the touch sensor is being touched. The buzzer turns on because of the rules we have set in meshbot. When the touch sensor is touched again, the buzzer will turn off.