This is one channel TP223 capacitive touch key sensor module, designed for replacing traditional direct button keys with reverse pad size. The module uses the touch-sensing IC TP223 to sense the touch input thus making it easy to add a capacitive touch to your project.
The device is very easy to interface with Arduino and other microcontrollers. The best thing about this is it can be used without a controller also.
It is a capacitive touch sensor so when a capacitive load, such as a human hand, is close to proximity to use the sense-pad, the sensor detects the changes in capacitance and activates the switch. In the normal state, its output is low and keeps it low in the power state. When a touch is sensed on the circular marked region, it outputs high and switches to a quick response state. When not being touched or 12 sec, it switches to low power again.
- Low power consumption
- Can replace the traditional touch of a button
- Mounting holes to install easily
- Compact size
- Easy to interface with Arduino or other microcontrollers
- Can be used without a controller also
- Power supply voltage: 2V to 5.5V
- high: 0.8V
- low: 0.3V
- Response time
- Touch mode: 60mS
- Low power mode: 220mS