Fan Control 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.

1. About this example

In this EzloPi project, we will be creating a smart fan control system using the EzloPi device. The goal is to provide a convenient touch-based fan control while utilizing the limitless capabilities and smartness of the EzloPi platform.

By utilizing the EzloPi device, we can integrate this smart fan control system into our home automation setup or as part of a larger project. We can also enhance the project further by adding additional sensors like temperature or humidity sensors or IR sensors to enable automated fan control based on ambient room conditions and detected motion.

2. Project Video Demonstration

Welcome to the project demonstration video section. The following video showcases the key aspects of Fan Control using Touch Sensor, providing a visual walkthrough of its implementation.

Play Video

3. Circuit Setup & Interfacing

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

  • ESP32 as an EzloPi smart device.
  • TTP223B Touch Sensor.
  • XL6009 DC to DC Boost Converter Module.
  • 12V DC fan.

The wiring diagram of ESP32 30 pin is represented as follows:

The following connections are made to complete the circuit setup.

From ESP32 (30 pins):

  • Connect the GND from the ESP32 to the GND pin of the DC-DC module.
  • Connect the Vin pin from the ESP32 to the Common pin of the relay module.
  • Connect the Vin pin from the ESP32 to the (+) positive terminal of the relay module.
  • Connect the GND pin from the ESP32 to the (-) negative terminal of the relay module.
  • Connect the D5 pin from the ESP32 to the S (Signal) pin of the relay module.
  • Connect the D4 pin from the ESP32 to the I/O pin on the TTP223B touch sensor module.
  • Connect the 3.3V pin from the ESP32 to the VCC pin on the TTP223B touch sensor module.
  • Connect the GND pin from the ESP32 to the GND pin on the TTP223B touch sensor module.

From the Relay Module:

  • Connect the NO pin from the relay module to the +ve pin on the DC-DC module.

From the DC-DC Boost Converter:

  • Connect the OUT+ of the DC to the DC module to the +ve terminal of the DC fan.
  • Connect the OUT- of the DC to the DC module to the -ve terminal of the DC fan.

4. Interfacing the Fan Control using a Touch Sensor using EzloPi Web Flasher

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

Login
  1. Log in using the credentials that you just set earlier while signing up.
Fan Control Using Touch Sensor
  1. Now, click on the Connect Device button and a pop-up window will appear.
PCI Serial Port
  1. Now, select the COM port to which your ESP32 device is connected. In our case, the COM3 port is used.

Click Connect.

Device Status
  1. If you are new to this and it’s your first time configuring, select Create new Device ID. Enter Wifi SSID and Wifi Password.
  2. In the Device Configuration, tab click on Digital Output.
Device Configuration
  1. 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 Fan with Touch.
  • Set Device Subtype to Relay,
  • Set the ADC OUT GPIO to 4.
  • Set the ADC IN GPIO to 5.
  • Set the Resistor to PULL UP or PULL DOWN.
  • 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.
  1. A window will appear on the bottom right side of the screen displaying “Please press BOOT button while flashing begins.”
Configuration Begins
  1. 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.”
Flashing in Progress
  1. Release the BOOT button from your ESP32 when this pop-up on the bottom right window appears.
Device Flashed Successfully
  1. After some time, a popup will appear saying Device Flashed Successfully! This means that your device has been set up successfully.

5. MiOS App

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

Google PlayApple App Store
  1. After downloading the app, proceed to install the application and open it.
Sensor App
  1. 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.
MiOS App
  1. 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:
Select a Location
  1. 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:
Fan with Touch
  1. After opening the dashboard, you will be able to see the tile of your connected device.
  2. On the MiOS mobile dashboard, the tile is displayed for our fan control using the touch sensor project. When we press or touch the touch sensor module, the fan will turn ON. Also, the tile will be updated and will be shown as ON.
Fan with Touch OFF
  1. When we touch again on the touch sensor module, the fan will turn OFF. Also, the tile will be updated and will be shown as OFF, as in the above figure.

6. MiOS Web Application

  1. After configuring the controller with the EzloPi web flasher, head to ezlogic.mios.com
Login
  1. Use the same credentials to log in that you used for configuring the controller with the web flasher.
Fan with Touch ON
  1. On the MiOS web dashboard, the tile is displayed for our fan control using the touch sensor project. When we press or touch on the touch sensor module, the fan will turn ON. Also, the tile will be updated and will be shown as ON.
Fan Control using a Touch Sensor OFF
  1. Similarly as shown above, when we touch again on the touch sensor module, the fan will turn OFF.  Also, the tile will be updated and will be shown as OFF as in the above figure.
Buy Components

eZlopie Products A single-channel 5V relay module $00.00

eZlopie Products Momentary switch $00.00

eZlopie Products Level Shifter Module (BSS138) $00.00

eZlopie Products ESP32
$00.00

eZlopie Products AC Lamp and Holder
$00.00