สวิทช์สัมผัส TTP223B Digital Touch Sensor Module สำหรับ Arduino และ Raspberry Pi

สวิทช์สัมผัส TTP223B Digital Touch Sensor Module สำหรับ Arduino และ Raspberry Pi 

The module is based on a touch-sensing IC  (TTP223B) capacitive touch switch module. In the normal state, the module output  low, low power consumption; When a finger touches the corresponding position,  the module output high, if not touched for 12 seconds, switch to low-power mode.

• Jog type : the initial state is low , high  touch , do not touch is low ( similar touch of a button feature )
• Module can be installed in such as surface  plastic, glass of non-metallic materials
• In addition to the thin paper ( non-metallic )  covering the surface of the module , as long as the correct location of the  touch , you can make hidden in the walls, desktops and other parts of buttons
  
  Features:
• Low power consumption
• Power supply for 2 ~ 5.5V DC
• Can replace the traditional touch of a button
• Four M2 screws positioning holes for easy  installation
  

   

  Specification:

  Item	Min	Typical	Max	Unit
  Power supply voltage VCC	2.0	3	5.5	V
  Output high VOH	-	0.8VCC	-	V
  Output low VOL	-	-	0.3VCC	V
  Output Pin Sink Current (@ VCC = 3V, VOL = 0.6V)	-	8	-	mA
  Output pin pull-up current (@ VCC = 3V, VOH = 2.4V)	-	4	-	mA
  Response time (low power mode)	-	-	220	mS
  Response time (touch mode)	-	-	60	mS
  Size	24x24x7.2			mm

  Touch Sensor Interface :(the last picture show)

  -Control Interface : A total of three pins (GND,  VCC, SIG), GND to ground , VCC is the power supply , SIG digital signal output  pin ;
  
  -Power Indicator : Green LED, power on the right that is shiny ;
  
  -Touch area : Similar to a fingerprint icon inside the area , you can touch the  trigger finger .
  
  -Positioning holes : 4 M2 screws positioning hole diameter is 2.2mm, the  positioning of the module is easy to install , to achieve inter- module  combination ;