Interfacing digital capacitive touch switch module with evive

touch sensor GIF
About This Tutorial
In this tutorial we will interface digital capacitive touch switch module with evive and we will display whether sensor is touched or not on TFT display
Tutorial Info

Components Required

ImageComponentQuantityAvailable in Kit
evive1
Male to Female Jumper Cable 10cm1
  • None
USB A-B Cable1

Introduction 

The Digital capacitive touch sensor module  is based on TTP223B . Normally , it output “LOW” and keeps at lower state. When  touch is sensed  on the circular marked region, it output “HIGH” and switch to the quick responce state .When not being  touched for 12 seconds , it switches to low power state again , if the module is mounted in the surface of non metallic material such as glass ,plastic and acrylic etc, you can make the keys hidden in the walls and desks.The TTP223 is touch pad detector integrated circuit which offers one touch key . The TTP223 touch detecting ic is designed for replacing  traditional direct  button key . capacitive touch allows electronics to sense when your finger is within a few millimeters of a surface to stimulate button press just like how the push button works .Capacitive sensing may be used in any place where low to no human force sensing  is desirable .

Pin description  

Digital Capacitive touch switch  sensor  module have 3 pins ( 2- power supply pins and 1- digital signal pin )

  • VCC
  • GND
  • SIG  (Digital signal pin )

Circuit diagram

 

  • Connect “VCC”  of touch switch module to “VCC” of evive board
  • Connect “GND”  of touch switch module to “GND ” of evive board
  • Connect “SIG” pin  of touch switch module to digital pin number 8 of evive board 

 

Arduino code

Expected result

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