Touch Sensor/Button Brick

Overview

Electronic brick of touch button switch is finger-sized, which can be connected to I/O port of main board or externally disconnected to check the switch state so as to control ON/OFF of LED lamp.

Features

1. Plug and play, easy to use. Compatible with the mainstream 2.54 interfaces and 4-Pin Grove interfaces in the market.

2. With use of M4 standard fixed holes, compatible with M4-standard kits such as Lego and Makeblock.

Specifications

PCBsize	38.0mmX24.0mmX1.6mm
Workingvoltage	3.3or5VDC
Operatingvoltage	3.3or5VDC
Compatibleinterfaces	2.543-pininterfaceand4-pinGroveinterface (1)

Note 1： S for digital output port, N for not used pin, V and G for voltage at the common collector and ground respectively. When there is no operation, digital output is VDD; when the button is pressed down, the digital output is 0V.

Electrical Characteristics

Electrical characteristics	Min.	Typical	Max.	Unit
Supply voltage	2	3	5.5	VDC
Working current（VCC=5V）	-	18	-	uA
Digital output voltage（VCC=5V）	0	-	5	V

Hardware

Demo

Connect S port of electronic brick of touch button switch to D2 port of Arduino board, and we will use the following program to read its digital value. When the digital value read is low level, LED lamp will be ON; when the digital value read is high level, LED lamp will be OFF.

 int Button=2;       //connect button to D2
 int LED=13;
 void setup()
 {
 pinMode(LED, OUTPUT);
 pinMode(Button, INPUT);
  
 }
 
 void loop()
 {
   
 if(digitalRead(Button)==HIGH)   //when the digital output value of button is high, turn on the LED.
 {
   digitalWrite(LED, LOW);
   
 }
   
 if(digitalRead(Button)==LOW)  //when the digital output value of button is low, turn off the LED.
 {
   digitalWrite(LED, HIGH);
 }
 
 }