Trigger buzzer state using TTP223B 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 an interface between the TTP223B touch sensor module and the EzloPi device, utilizing the touch sensor as a switch to control the state of the buzzer. The end result is a system where the buzzer alarms only when the touch sensor is being touched. Think of it as a doorbell which only rings when a person keeps pressing down on the button.

With the EzloPi platform, users have endless possibilities to create many amazing projects and demonstrate their creativity for fun or for making their daily practical tasks easier and simple.

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

• ESP32 as an EzloPi smart device.
• 2-channel 5V relay module.
• DC motor.
• External DC power source.

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

1. 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. 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. 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.

13. 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 the buzzer. The tile will indicate the status of the buzzer depending on the touch sensor being operated.

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 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 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. In the MiOS web dashboard, you can see that when the touch sensor is being given an input in the form of a touch, the buzzer is triggered 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 touch sensor and the buzzer. Both will be functioning according to rules we have set in meshbot.

6. Here, in the MiOS mobile dashboard, you can see that when the touch sensor is being given an input in the form of a touch, the buzzer is triggered because of the rules we have set in meshbot.