The TTP224 4 Channel Capacitive Touch Sensor Module detects finger touch on four conductive pads by measuring capacitance change at each input. Each channel outputs an independent digital signal, so pressing pad 2 triggers only output 2 without disturbing the others. The ttp224 4 channel touch sensor runs on 2V to 5.5V, making it compatible with coin cells.
The ttp224 module has two operating modes. Fast mode cuts response time to 60ms, while low power mode extends it to 160ms to reduce idle current draw. A non-obvious detail is that the capacitive touch sensor automatically calibrates its baseline capacitance 0.5 seconds after power-up. If you place your hand near the pads during that window, the sensor calibrates with your hand as the baseline and stops detecting touch correctly.
makers, and hobbyists use the 4 channel capacitive touch sensor with Arduino IDE using digitalRead on each output pin. StemVolt provides this sensor with trusted quality, ensuring reliable performance and easy usability.
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Features:
- Fast mode response of 60ms allows quick touch detection for interactive panel builds
- Low power mode at 160ms response reduces power draw between active touch events
- Calibration delay of 0.5 seconds sets the baseline automatically after every power cycle
Technical specifications:
| Specification | Details |
|---|---|
| Operating Voltage | 2V to 5.5V |
| Number of Channels | 4 touch inputs |
| Response Time (mS) | 160mS (Low Power Mode), Output 60mS (Fast Mode) |
| Model Type | TTP224 Touch Switch |
| Calibration Delay | 0.5 sec |
Applications:
- Touch-controlled LED panel uses TTP224 4 Channel Capacitive Touch Sensor Module to switch four colour zones
- Capacitive doorbell uses four touch pads to select different alert tones on a microcontroller output
- Educational toy uses ttp224 4 channel touch sensor to trigger four different sound samples
Package includes:
- 1 x TTP224 4 Channel Capacitive Touch Sensor Module
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