TTP223 Capacitive Touch Sensor Module

Product Overview

The TTP223 Capacitive Touch Sensor Module is a compact, reliable, and easy-to-use touch switch designed for Arduino and DIY electronics projects. Using capacitive touch sensing, the module detects human touch or proximity and provides a clean digital output. It is ideal for creating touch buttons, keypads, touch-sensitive switches, and other interactive systems.

Key Features

• Capacitive touch technology for high sensitivity and accurate detection.
• Simple digital output (HIGH when activated, LOW when deactivated).
• Wide supply voltage: 3.3V to 5V for broad microcontroller compatibility.
• Low power consumption for battery-powered and portable devices.
• Momentary switch behavior: activates on touch and resets on release.
• Compact, low-profile board for easy mounting in small enclosures.

Technical Specifications

• Voltage: 3.3V to 5V
• Output Type: Digital
• Pinout: VCC, GND, OUT
• Size: Approx. 24 mm x 18 mm x 3 mm
• Sensing Method: Capacitive touch sensing
• Response Time: Instant touch detection
• Operating Temperature: -40°C to +85°C
• Output Signal: HIGH when activated, LOW when deactivated

Wiring and Quick Start (Arduino)

Wiring the TTP223 is straightforward. Connect VCC to 3.3V or 5V on your microcontroller, GND to ground, and OUT to a digital input pin.

• VCC -> 3.3V or 5V
• GND -> GND
• OUT -> Digital input (for example, Arduino pin D2)

Example Arduino sketch:

// Simple TTP223 example
const int touchPin = 2; // OUT connected to digital pin 2
void setup() {
  pinMode(touchPin, INPUT);
  Serial.begin(9600);
}
void loop() {
  int state = digitalRead(touchPin);
  if (state == HIGH) {
    Serial.println("Touch detected");
  }
  delay(50);
}

Applications

• Arduino touch sensor projects
• DIY capacitive touch switches and keypads
• Interactive user interfaces and control panels
• Home automation controls and smart home interfaces
• Prototyping touch-sensitive devices, wearable electronics

Design Tips and Best Practices

• Use a single, clean metal touch pad or a printed PCB pad for best sensitivity.
• Keep the sensing pad area free from ground pours or large nearby copper to avoid interference.
• If sensitivity is too high or too low, change pad size or adjust layout; some TTP223 modules include a sensitivity jumper or pad.
• For battery projects, use the module’s low power features and put the MCU into sleep modes when possible.

Why Buy from Colgroad

At Colgroad, we source quality electronics components at competitive prices. The TTP223 Capacitive Touch Sensor Module we offer is selected for reliability and consistent performance in Arduino and DIY applications. Enjoy fast shipping and responsive customer support when you order from Colgroad.

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Add touch interaction to your next project with the TTP223 Capacitive Touch Sensor Module. Whether you are building a prototype, a smart home control, or a wearable, this module simplifies touch sensing integration.

Note: Images are for illustration purposes only.