TTP223 Capacitive Touch Key Module

The TTP223 Touch Key Module is a compact and easy-to-use capacitive touch switch module based on the TTP223 touch-sensing IC. Designed to replicate a single tactile button, this module allows you to replace traditional mechanical push buttons with a sleek, touch-sensitive interface. It features a touch-sensitive area of 11 × 10.5mm with a sensing range of approximately 5mm, making it responsive to light finger touches.

An onboard LED provides visual feedback, lighting up when the sensor is triggered. By default, the output switches from a low idle state to high when touched, but solder jumpers allow configuring the module for active-low or toggle mode operation, providing flexibility for different applications. The module operates on low voltage, typically 3.3V–5V, and can interface easily with microcontrollers such as Arduino, ESP32, Raspberry Pi, STM32, and other embedded systems.

Key Features:

• Capacitive touch detection with ~5mm sensing range

• Touch area: 11 × 10.5mm

• Onboard LED indicator for touch feedback

• Configurable output: default high, active-low, or toggle mode

• Replicates a tactile push button without mechanical parts

• Operating voltage: 3.3V–5V

• Easy integration with Arduino, ESP32, Raspberry Pi, STM32, and other microcontrollers

Applications:

• Touch-controlled switches for DIY electronics

• Arduino and Raspberry Pi projects

• Smart home controls and automation

• Portable devices and user interfaces

• Replacing mechanical buttons in embedded systems

Why Choose This Module:
The TTP223 Touch Key Module provides a modern, durable, and reliable alternative to traditional push buttons. Its compact design, low power consumption, and configurable output make it ideal for hobbyists, students, and professional developers seeking a responsive touch interface for electronic projects.