Digital Touch Capacitive Sensor TTP223B

The TTP223B Digital Touch Capacitive Sensor Module (Blue PCB) is a highly responsive, single-channel touch sensor that allows you to upgrade traditional mechanical buttons with sleek, touch-based input. Using the TTP223B capacitive sensing IC, this module detects the presence of a finger or conductive object when it touches the marked sensing area.

Compact and easy to integrate, this module is designed for DIY electronics, home automation systems, smart devices, and more. It operates on 2V to 5.5V, making it compatible with a wide range of microcontrollers like Arduino, ESP32, ESP8266, and Raspberry Pi. The sensor outputs a digital HIGH signal when touched, and it includes an onboard LED for visual indication of touch detection.

This blue PCB version of the TTP223B module is a favorite among makers for its low power consumption, compact size, and stable performance. It’s suitable for replacing buttons in modern control interfaces, hidden switches, and wearables. Its ability to work through non-metallic materials like acrylic or plastic allows for seamless integration in sleek designs.

Now available at eleberric.com, the TTP223B (Blue PCB) is your go-to module for creating modern, touch-sensitive user interfaces.

Specifications

• Operating Voltage: 2V – 5.5V DC

• Output Signal: Digital HIGH when touched

• Response Time: ~60ms (touch), ~220ms (release)

• Output Mode: Momentary by default (toggle mode possible)

• Current Consumption: Low power in standby

• Touch Surface: Clearly marked circle on the blue PCB

• Dimensions: 24mm x 24mm x 5mm

• Weight: ~2g

• Pinout: VCC, GND, OUT

Key Features

• Touch-Sensitive Input: Replaces mechanical buttons for modern designs

• Compact Blue PCB Design: Small size fits tight spaces

• Visual Indicator: Built-in LED indicates touch activation

• Wide Compatibility: Works with Arduino, Raspberry Pi, ESP8266, ESP32

• Low Power Usage: Suitable for battery-operated projects

• Easy to Use: Just connect power and read the digital output

• Hidden Control Capable: Works through plastic, glass, and acrylic surfaces

• Toggle Mode Capable: Can be configured to toggle output with touch

Applications

• Touch-activated lights and switches

• Hidden control panels in smart home systems

• DIY electronics and hobby projects

• Interactive exhibits or kiosks

• Touch interfaces for toys or wearables

• Embedded systems requiring modern input