Recently I got 2 ir sensor module like the one in:
I want to create a ir beam break circuit, not sure whether these can be used if I put them heads to heads
Recently I got 2 ir sensor module like the one in:
I want to create a ir beam break circuit, not sure whether these can be used if I put them heads to heads
Yeah, you can use them that way. But you would need to remove the IR led from one (or pair it with another IR led / desolder the LED and place it on the opposite side).
But they are not smart modules and are very much effected by (sun) light.
I want to create a ir beam break circuit,
not sure whether these can be used if I put them heads to heads
I don't think that's going to work.
Think about it.
The way it works :
// IR Obstacle Collision Detection Module
// Henry's Bench
int LED = 13; // Use the onboard Uno LED
int isObstaclePin = 7; // This is our input pin
int isObstacle = HIGH; // HIGH MEANS NO OBSTACLE
void setup() {
pinMode(LED, OUTPUT);
pinMode(isObstaclePin, INPUT);
Serial.begin(9600);
}
void loop() {
isObstacle = digitalRead(isObstaclePin);
if (isObstacle == LOW)
{
Serial.println("OBSTACLE!!, OBSTACLE!!"); / if obstacle, run this code
digitalWrite(LED, HIGH);
}
else
{
Serial.println("clear"); / else, 'clear'
digitalWrite(LED, LOW);
}
delay(200);
}
head to head
detector-1 led on => >==detector-2 phototransistor receives light from detector-1 ('obstacle !'
detector-1 detects light from detector-2 ==< <=detector-2 led on
(detector-1 = 'obstacle !')
You could however invert the logic to say:
if NO obstacle
BEAM BREAK !!