TTP223B Sensor Module Capacitive Touch Button for Arduino Raspberry

Product description: TTP223B touch sensor module

TTP223B is a capacitive touch sensor that works excellently as a modern replacement for traditional mechanical buttons. The module is fully compatible with popular platforms such as Arduino, Raspberry Pi, AVR, and PIC. It can be used successfully with ESP8266, ESP32, Arduino, and Raspberry Pi.

Measurement is capacitive, and the built-in LED indicates touch detection in real time. The circuit sensitivity can be adjusted by changing the value of capacitor C1 - the lower the capacitance, the higher the module sensitivity.

Key technical specifications

• Supply voltage: 2 - 5.5 V
• IC used: TTP223B
• Response time: 60 ms
• Pinout: SIG, VCC, GND
• Measurement type: capacitive
• Dimensions: 24 x 24 mm
• Mounting holes: 2 mm diameter
• Indication: built-in LED

Example applications

• Replacing traditional mechanical switches in electronics projects
• Building touch interfaces in smart home systems
• Building control panels hidden under glass or acrylic
• Interactive toys and educational gadgets
• Detecting physical contact in alarm and security systems

Benefits

• High reliability thanks to no moving mechanical parts
• Wide supply voltage range from 2 V to 5.5 V simplifies integration with various systems
• Fast response time of just 60 ms ensures smooth operation
• Simple connection via three pins: SIG, VCC, GND
• Sensitivity can be tailored to your needs using component C1