`Sharp distance sensor GP2y0d805z0f

Using Arduino Sensors
1

I an trying to find a code for this sensor as it senses motion to turn on LED for a delay of 5-6 seconds.
The sensor seems to have a slow response as I need it to be almost instantaneous to turn on the LED.
I will be using multiple sensors with there own LED. Can this be done?
I am using Arduino Mega 2560.
Here is what I tried...

int led = 42; // the pin that the LED is atteched to
int sensor = 52; // the pin that the sensor is atteched to
int state = HIGH; // by default, no motion detected
int val = 1; // variable to store the sensor status (value)

void setup() {
pinMode(led, OUTPUT); // initalize LED as an output
pinMode(sensor, INPUT); // initialize sensor as an input
Serial.begin(9600); // initialize serial
}

void loop(){
val = digitalRead(sensor); // read sensor value
if (val == HIGH) { // check if the sensor is HIGH
digitalWrite(led, HIGH); // turn LED OFF
delay(100); // turn LED OFF

if (state == LOW) {
Serial.println("Motion detected!");
state = LOW; // update variable state to LOW
}
}
else {
digitalWrite(led, LOW); // turn LED On
delay(7000);

if (state == HIGH){
Serial.println("Motion stopped!");
state = HIGH; // update variable state to HIGH
}
}

Thanks for any help on this!

2

First: To post code you must use code tags around it. In the editor it's the </> to produce them.

The sensor seems to have a slow response as I need it to be almost instantaneous to turn on the LED.
I will be using multiple sensors with there own LED. Can this be done?

I don't know the sensor but definitely a source of the slow response are the delay() calls in your code. Remove them, they are not needed.

Update the comments, some of them are simply wrong.

3

Sharp distance sensor GP2y0d805z0f is quite an awesome sensor. I have used it in many of my projects and it works really great.

I think the problem you are getting is because of 7 seconds delay. Obviously when your LED is ON then your code will stuck for 7 seconds in the delay and that will make the sensor slow. So, I would suggest you to find some other way of making LED glow for 7 seconds.

4

I know I'm late , but thank you for your input.