TTP223B Capacitive Digital Touch Sensor Switch Module
This module is a capacitive micro-touch switch module.
1. Under normal circumstances, the module outputs a low level and the mode is low power mode; when the finger touches the corresponding position, the module outputs a high level and the mode switches to fast mode; if there is no touch within 12 seconds, the mode switches to low power mode.
2. The module can be installed on the surface of non-metallic materials such as plastic and glass. In addition, a layer of thin paper (non-metal) is covered on the surface of the module. As long as the touch position is correct, it can be made into a button hidden on the wall, desktop, etc.
3. Compatible with Arduino, Raspberry Pi and DIY
Parameters:
Size: 24*24*7.2mm
Power supply voltage VCC: 2.0~5.5V
Output high level VOH: 0.8VCCV; low level voltage: 0.3V
Output pin sink current: 8mA (@VCC=3V, VOL=0.6V); pin pull current: -4mA (@VCC=3V, VOH=2.4V)
Response time: 220ms (low power mode) 60ms (fast mode)
Features:
1. Control interface: 3 pins (GND, VCC:SIG), GND is ground, VCC is power supply, SLG is digital signal output pin
2. Power indicator: Green LED, lights up after normal power-on
3.Touch area: The inner area of ​​the icon similar to a fingerprint, which can be triggered by a light touch of the finger
4. Positioning holes: 4 M2 screw positioning holes, with a hole diameter of 2.2mm, which are convenient for module installation and positioning, and realize rapid combination between modules