touch sensor is based on the principle of capacitive sensing touch switch module. The gold-plated contact surface of a human body or metal touch sensor is sensed. Induction sensitivity with the size of the contact surface and the thickness of the covering material.
This module has 2 output modes that can be changed using a change of welding jumper. There will be such a short circuit point on the module for changing the mode, soldering the two short circuit points of the two above, the mode of the module will switch to the switch mode, and this time can be used to make the desk lamp with less complicated touch control. Short-circuit The following two short-circuit point, the module's mode will switch to the button, this time can be used instead of physical buttons.
1. Operating voltage: 3.3V or 5V
2. Working current: <20mA
3. Operating temperature range: -10 ℃ ~ +70 ℃
4. Interface Type: Digital signal output
5. Size: 37mm x 23mm
7. Pin Definitions: S is the signal output, + is the power supply (VCC), - to ground (GND)
S port connected to the controller's digital input pin. 5V and GND are respectively connected to the + 5V and GND of the power supply.