ADDING A TIMER IN AN IR SENSOR

Projects Programming
1

HERE IS MY CODE:

void setup() {
pinMode(3,INPUT);
pinMode(8,OUTPUT);

}

void loop() {

if(digitalRead(3)==HIGH){
digitalWrite(13,HIGH);
if(millis()==5000){
digitalWrite(13,LOW);
}
else{
digitalWrite(13,LOW);

}
}
}

THE LED LIGHT SEEMS TO STAY ON AND NOT RESPECT MY TIMER CODE. HOW TO ADD A TIMER IN THIS IR SENSOR?

2

HERE IS MY CODE:

void setup() {
pinMode(3,INPUT);
pinMode(8,OUTPUT);

}

void loop() {

if(digitalRead(3)==HIGH){
digitalWrite(13,HIGH);
if(millis()==5000){
digitalWrite(13,LOW);
}
else{
digitalWrite(13,LOW);

}
}
}

THE LED LIGHT SEEMS TO STAY ON AND NOT RESPECT MY TIMER CODE. HOW TO ADD A TIMER IN THIS IR SENSOR?

3

What IR sensor are you using?
This is certainly NOT the right code for an IR sensor.
You can't just declare pin 3 as an input. You gotta use a library.

How to use an IR sensor

By the way from what angle is this code a timer? This will only turn the light on once that is after reaching 5 seconds after activation of the Arduino.

4

Use the autoformat in the IDE, Use code tags for the code.
Why use the if... millis == 5000.?
That will only happend once after reset.
You take the same action whatever value of milli, digitalWrite LOW.
Take a look again!

5

I am a newbie so I dont really much know anything. But I am familiar with the if statements.

Thats my problem, After 5 seconds, The led light is still on. It is not turning off

I am using a E18-D80NK IR Obstacle Avoidance Proximity Sensor

6

@karlcorporal7

TOPIC MERGED.

Could you take a few moments to Learn How To Use The Forum.
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It will help you get the best out of the forum.

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Continued cross posting could result in a time out from the forum.

7

karlcorporal7:
Thats my problem, After 5 seconds, The led light is still on. It is not turning off

I am using a E18-D80NK IR Obstacle Avoidance Proximity Sensor

Exactly! The code you have written may not receive a proper input from the sensor. Always learn to search the internet before posting. Also make sure your wiring is correct.

8

Maybe this solves your LED problem:

int value;

if ( digitalRead ( 3 ) == HIGH )
{
	digitalWrite ( 13, HIGH );
	while ( value == HIGH )
        {
             value = digitalRead ( 3 );
        }
        digitalWrite ( 13, LOW );
}
9

@TheUNOGuy

thank you for this, but how do I include that after 5 seconds, the output 13 will go to low even if the sensor is still detecting something?

Like how will I include the millis() here, should I insert "if" inside that while loop?

10

thank you for this, but how do I include that after 5 seconds, the output 13 will go to low even if the sensor is still detecting something?

Here's a way of doing that.

Create the global.
timeObj LEDTimer(5000);

In Setup() put.
while (!LEDTimer.ding()) delay(10);

In loop() put the line..
digitalWrite(13, !LEDTimer.ding());

When you want the LED on call.
LEDTimer.start();

Grab library :LC_baseTools from the library manager in the IDE. Add it to your project.

-jim lee

11

TheUNOGuy:
Maybe this solves your LED problem:

int value;

if ( digitalRead ( 3 ) == HIGH )
{
digitalWrite ( 13, HIGH );
while ( value == HIGH )
{
value = digitalRead ( 3 );
}
digitalWrite ( 13, LOW );
}

Seriously?
Did you try it?