Turn On/Off Led using Touch Sensor Module

Introduction

In this Tutorial we are using a Touch Sensor with Led , When you touch the sensor , Led will Turn On/Off.

HARDWARE REQUIRED

SOFTWARE REQUIRED

Arduino IDE 1.8.5 (programmable platform for Arduino)

Click To Download :https://www.arduino.cc/en/Main/Software

SPECIFICATIONS

Touch Sensor Module

It outputs a signal if the metal pike of the Sensor was touched. You can adjust the sensitivity of the sensor with the controller.

Digital Out: During, contact detection, signal will be outputted.
Analog Out: Direct measuring value of the sensor unit.
LED1: Shows that the sensor is supplied with voltage
LED2: Shows that the sensor detects a magnetic field

The sensor has 3 main components on its circuit board. First, the sensor unit at the front of the module which measures the area physically and sends an analog signal to the second unit, the amplifier. The amplifier amplifies the signal, according to the resistant value of the potentiometer, and sends the signal to the analog output of the module. The third component is a comparator which switches the digital out and the LED if the signal falls under a specific value. You can control the sensitivity by adjusting the potentiometer.

Arduino Uno

CIRCUIT CONNECTION

Connect GND of Touch Sensor to GND of Arduino Uno.
Connect VCC (+) of Touch Sensor to 5V of Arduino Uno.
Connect DO of Touch Sensor to Digital pin 3 of Arduino Uno.
Connect LED’s Negative pin (Shorter leg) to GND Pin of Arduino Uno.
Connect LED’s Positive (Longer leg) to Digital pin 13 of Arduino Uno.

CODE

https://drive.google.com/open?id=1wUJ6MP-AzhInp_cvJyLzABd-DjXOuonM

int Led = 13 ; // define LED Interface

int touchsensor = 3; // define Touch Sensor Interface

int val ; // define numeric variables val

/* The setup() function is called when a sketch starts. It is used to initialize variables, pin modes, start using libraries, etc. This function will only run once, after each power up or reset of the Arduino board. */

void setup ()

{

pinMode (Led, OUTPUT) ; // define LED as output interface

pinMode (touchsensor, INPUT) ; // define touch sensor output interface

}

/* The loop() function executes the program repeatedly until Specified. */

void loop ()

{

val = digitalRead (touchsensor) ; // digital interface will be assigned a value of 3 to read val

if (val == HIGH) // When the touch sensor detects a signal, LED flashes

{

digitalWrite (Led, HIGH);

}

else

{

digitalWrite (Led, LOW);

}

WORKING

Welcome to the Arduino Based Project which consists of Touch Sensor. The basic functionality of sensor is that it detects near proximity (also known as touch) without depending on physical contact. In simple words, you can understand that its working is same as a simple switch or circuit. When any physical medium comes in contact with the touch surface. The internal circuit will be closed inside the sensor and current starts flowing. On the other hand, when this physical contact is broken or released, circuit will be opened. Here, we are controlling a Led using Touch Sensor. When we touch the Sensor, then the led turns on or else it stays off.