The TTP223 Capacitive Touch Sensor Module is a compact touch-sensing board built around the TTP223B capacitive touch IC, letting a bare copper pad on the PCB act as a reliable pushbutton replacement. It responds to a light finger touch through glass, plastic, or thin non-metal panels, making it ideal for hidden or sealed control panels.
Key features:
- Capacitive Sensing: Uses the TTP223B touch IC to detect a finger touch without any moving parts, so there is nothing to wear out.
- Digital Output: Outputs a clean HIGH signal while touched and LOW when released, reading directly on any microcontroller digital pin.
- Low Power Standby: Automatically enters low-power mode after about 12 seconds without a touch, drawing only microamps of current.
- Wide Supply Range: Operates from 2V to 5.5V, compatible with both 3.3V and 5V microcontroller platforms.
- Panel Mountable: Can sense through a few millimeters of glass, acrylic, or plastic, useful for sealed enclosures.
- Simple 3-Pin Interface: Only VCC, GND, and signal are needed, making wiring quick for prototyping or final builds.
It is a drop-in replacement for mechanical pushbuttons in Arduino, ESP8266, and Raspberry Pi projects, from touch-activated lamps to interactive control panels.
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