TTP223 Capacitive Touch Sensor Red
The TTP223 Capacitive Touch Sensor Red is a compact and highly responsive touch detection module designed for use in interactive electronics projects. Instead of mechanical buttons, this module uses capacitive sensing technology to detect the presence of a finger or conductive object. Its bright red PCB design makes it visually distinctive and easy to integrate into various DIY and embedded systems. This sensor is widely used in Arduino, Raspberry Pi, and other microcontroller projects where a simple, reliable, and modern input method is required.
How It Works
The TTP223 touch sensor operates by measuring changes in capacitance when a conductive object, such as a human finger, approaches or touches the sensing pad. The onboard TTP223 IC processes these changes and outputs a digital signal. By default, the module outputs a HIGH signal when touched and LOW when untouched (active-high mode). The module also supports toggle mode, allowing it to latch states depending on the configuration. Its fast response time and stability make it a superior replacement for mechanical switches in modern designs.
Key Features
Capacitive touch sensing technology
Red PCB design for easy identification
Simple 3-pin interface (VCC, GND, OUT)
Active-high digital output signal
Toggle or momentary modes (configurable)
High sensitivity and fast response
Compact size, easy to integrate with projects
Compatible with Arduino, Raspberry Pi, ESP8266, ESP32, and other microcontrollers
Specifications
| Parameter | Value |
|---|---|
| Operating Voltage | 2.0V – 5.5V |
| Output Signal | Digital (Active High) – |
| Response Time | ~60 ms |
| Operating Current | Low power consumption |
| Dimensions | Approx. 24 mm × 24 mm |
| PCB Color | Red |
| Output Modes | Momentary or Toggle |
Pin Configuration
| Pin | Name | Description |
|---|---|---|
| 1 | VCC | Power supply |
| 2 | GND | Ground connection |
| 3 | OUT | Digital output |
Applications
Touch-activated switches and buttons
Smart home and automation systems
Interactive display panels
DIY electronics and Arduino projects
Robotics control panels
Replacement for traditional push buttons
