Eyeblink Digital Sensor

SPECIFICATIONS:

-Initially 5V power supply is given to the sensor.

-Connect ground pin.

-Wear the eye blink sensor glass on the face at a particular distance.

-We can view the LED blinking for each eye blink; LED blinks for a closed eye and doesn’t blink when eye is open.

-The output pin gives to the digital output.

OVERVIEW:

-Focus of technology

-System Capabilities

-Power supply voltage : 3.3V-5V

-No additional power supply 

-3.5mm Connector

-Operating current: 100mA

PACKAGE INCLUDES:

1 PCS x Eyeblink Digital Sensor

//SOURCE CODE TAKEN FROM BELOW LINK

//https://forum.arduino.cc/index.php?topic=202877.15

/*

  Most of this code was cribbed directly from

  from Nick Gammon's "Debounce without delay" code

  on his switch tutorial at

  http://www.gammon.com.au/forum/?id=11955

*/

const byte blinkPin = 12;              // change this to fit your circuit

byte oldBlinkState = HIGH;         // assume eye open (or supply init/calibrate routine)

const unsigned long debounceTime = 10;  // milliseconds

unsigned long blinkStartAt;        // when the blink started

unsigned long oldBlinkStartAt;  // when the previous blink started

unsigned long unBlinkStartAt;   // when blink ended

unsigned long tweenTime;          // time since last blink

unsigned long blinkTime;         

unsigned long blinkChange;

void setup ()

  {

  Serial.begin (115200);

  pinMode (blinkPin, INPUT_PULLUP);

  }  // end of setup

void loop ()

  {

  byte blinkState = digitalRead (blinkPin);

  if (blinkState != oldBlinkState)

    {

    if (millis () - blinkChange >= debounceTime)

       {

       blinkChange = millis ();  // when blink state changed

       oldBlinkState =  blinkState;  // remember for next time

       if (blinkState == LOW) {   // change to LOW if your sensor is LOW when blinking

            blinkStartAt = blinkChange;

            tweenTime = blinkChange - oldBlinkStartAt;

            oldBlinkStartAt = blinkStartAt;

            Serial.print ("Blink at: ");

            Serial.print (blinkStartAt);

            Serial.print ("   Time since last blink: ");

            Serial.println (tweenTime) ;

          }  // end if switchState is LOW

       else  {

          unBlinkStartAt = blinkChange;

          Serial.print ("UnBlink at: ");

          Serial.print (unBlinkStartAt);

          Serial.print ("    Blink length: ");

          Serial.println (unBlinkStartAt - blinkStartAt);

          }  // end if blinkState is HIGH

       }  // end if debounce time up

    }  // end of state change

  // other code here ...

  }  // end of loop

15 days