TTP223 - 1 Channel Capacitive Touch Sensor Module Blue Color
Description:
TTP223 Capacitive Touch Sensor Module is a small and versatile electronic module that allows for touch-based input using capacitive sensing. It uses the TTP223 integrated circuit, which can detect the touch of a human finger on a touchpad (electrode) without requiring mechanical buttons or switches. Blue PCB variant is one of the most commonly used in hobby electronics and DIY projects due to its reliability, responsiveness, and compact size. This module outputs a digital signal when the surface is touched, making it ideal for adding touch control to Arduino, ESP32, Raspberry Pi, or other microcontroller projects.
Features:
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Capacitive Touch Sensing — No physical movement required.
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Digital Output — Easy integration with digital I/O pins on microcontrollers.
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Configurable Modes (by adding external components):
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Toggle or momentary switch mode
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Active HIGH or active LOW output
-
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Low Power Operation — Ideal for battery-powered applications.
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Compact Size — Fits into small projects and enclosures.
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Onboard Indicator LED — Lights up on touch (connected to OUT pin).
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Touch-Through Capability — Works through non-metallic surfaces.
Diagram:
Specifications:
| IC | TTP223 |
| Operating Voltage | 2.0V – 5.5V DC |
| Output Signal | Digital: HIGH on touch, LOW when untouched |
| Power Consumption | < 5µA in standby mode, ~2mA in active touch |
| Response Time | ~60 ms (touch), ~220 ms (release) |
| Output Drive Capability | ~500mA |
| Touch Pad Size | ~1.5 cm x 1.5 cm |
| Dimensions | 2.4 cm x 2.4 cm |
| PCB Color | Blue |
| Interface Pins | VCC, GND, I/O |
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