Capacitive Touch Sensor (TTP223-B)

Overview

Elevate your projects with the Capacitive Touch Sensor (TTP223-B) from MOKWN. This compact, high-sensitivity touch module replaces traditional mechanical buttons with a sleek, modern touch interface. Its touch-sensitive pad detects human touch through capacitive sensing, making it perfect for creating intuitive, waterproof, and hidden controls. Whether you're a hobbyist, student, or professional engineer, this sensor adds a professional touch to your creations.

Key Features

• Touch Detection: Uses capacitive sensing to detect touch, eliminating the need for physical pressure.
• High Sensitivity: TTP223-B chip offers adjustable sensitivity, ensuring reliable response even through thin materials.
• Low Power Consumption: Ideal for battery-powered projects.
• Easy Integration: Simple digital output (HIGH/LOW) compatible with most microcontrollers.
• Compact Design: Small form factor fits easily into tight spaces.
• Versatile Power: Operates at 2.0V to 5.5V, suitable for 3.3V and 5V systems.
• LED Indicator: Onboard LED shows touch status for visual feedback.

Technical Specifications

• Chip: TTP223-B
• Operating Voltage: 2.0V – 5.5V DC
• Output: Digital HIGH/LOW (active high by default)
• Touch Pad Size: 15mm x 15mm (approx.)
• Board Dimensions: 24mm x 24mm (approx.)
• Response Time: ~60ms at 3.3V
• Quiescent Current: < 2.5µA at 3V
• Interface: 3-pin header (VCC, GND, SIG)
• Adjustable Sensitivity: Yes (via onboard potentiometer)

Applications & Use Cases

• Home Automation: Replace physical switches with touch panels for smart lighting and appliance control.
• Wearable Electronics: Integrate into gloves or clothing for touch-sensitive controls.
• Interactive Art Installations: Create touch-responsive displays or sculptures.
• Security Systems: Use as a hidden touch keypad for locks or alarms.
• Consumer Electronics: Build custom touch buttons for audio equipment, gaming consoles, or DIY keyboards.
• Educational Projects: Teach capacitive sensing and human-machine interfaces.
• Waterproof Applications: Mount behind a non-conductive surface (e.g., plastic, glass) for a waterproof button.

What's Included

• 1x Capacitive Touch Sensor (TTP223-B) module
• 1x 3-pin header (pre-soldered)

Compatibility

• Microcontrollers: Arduino, Raspberry Pi, ESP32, ESP8266, STM32, PIC, and any with digital input.
• Logic Levels: 3.3V and 5V compatible.
• Programming: Works with standard GPIO read functions (e.g., digitalRead in Arduino).

MOKWN Recommendation

For a reliable and responsive touch interface, the TTP223-B is an excellent choice. We recommend pairing it with our MOKWN jumper wires and a breadboard for prototyping. For permanent installations, consider our heat shrink tubing and PCB mounting options. This sensor is a must-have for any maker's toolkit – order today and bring your touch-sensitive projects to life!