Key Information
- Function: The module detects touch or proximity through changes in capacitance, often with a human finger or conductive object.
- Operating Voltage: It operates on a wide DC voltage range of 2V to 5.5V.
- Default Behavior: By default (without modifications to the pads on the back), the output pin (SIG) is normally low. When a touch is sensed, the output goes high.
- Applications: It is commonly used in user interfaces, touch lamps, and various electronic projects, and can be mounted behind non-metallic surfaces like plastic or glass.
Pinout
The module has three main pins labeled on the board:
- VCC: Power supply input (connect to 2-5.5V).
- GND: Ground connection.
- SIG: Digital output signal pin.
