The TTP223 Touch Detection Sensor Module detects a single finger touch by measuring capacitance change on the pad and outputs a digital signal immediately. The capacitive touch sensor module responds in 220ms, which is fast enough for button replacement in most interactive builds. The module uses a red PCB and comes with a 1-channel design outputting a single digital signal per touch event.
The ttp223 touch sensor output stays high for as long as your finger rests on the pad, not just on initial contact. A non-obvious detail is that the module behaves like a level switch rather than a momentary pulse. If your project needs a single pulse per touch, you must detect the rising edge in code using state tracking in your loop rather than simply reading the output pin level.
Students and UI panel builders use the ttp223 touch detection sensor with Arduino IDE and MicroPython using digitalRead on the signal pin. StemVolt ships provide ready to wire immediately.
Related Products:
- Explore The Keypad Modules
Features:
- Response time of 220ms detects touch input quickly for button replacement applications
- Fast touch response type makes the pad suitable for interactive display and panel builds
- Red PCB color makes the module easy to identify and locate during wiring and testing
Technical specifications:
| Specification | Details |
|---|---|
| Response Time | 220mS |
| Output Signal | Digital output |
| Response Time | Fast touch response |
| No. of Channels | 1 Channel |
Applications:
- Desk lamp touch switch uses TTP223 Touch Detection Sensor Module to toggle relay on pad contact
- Capacitive doorbell button uses ttp223 touch sensor to trigger chime on 220ms response
- Interactive toy uses digital output to fire a sound module on pad touch
Package includes:
- 1 x TTP223 Touch Detection Sensor Module Red Color














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