DIY Touch Switch Using TTP223 Module

DIY Touch Switch Using TTP223 Module

The TTP223 touch sensor module allows you to create a simple touch switch for lights, fans, or other electronic devices. It’s beginner-friendly, reliable, and perfect for DIY electronics projects.

What You Need:

• TTP223 touch sensor module

• Relay module (5V or 12V depending on load)

• Microcontroller or power supply

• Connecting wires

• Load device (lamp, LED, fan, etc.)

How It Works:

The TTP223 module detects touch through capacitive sensing. When you touch the sensor pad, it sends a HIGH or LOW signal to the relay or microcontroller. The relay then switches the connected device ON or OFF.

Steps:

1. Connect the VCC and GND of the TTP223 module to a 5V power supply.

2. Connect the OUT pin of TTP223 to the relay module input.

3. Connect the load (lamp, fan, LED) to the relay output.

4. Power ON the circuit and touch the sensor pad to toggle the device.

Advantages:

• No mechanical button required

• Compact and easy to install

• Durable and reliable

• Works with low voltage

Common Uses:

• DIY lamps and home lights

• Smart home projects

• Fan or appliance control

• Small electronics experiments

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