Because people keep asking me for a long range ir beam break detector i made this circuit which has a range of nearly 10 meters 33 feet with only a single high power led using no lenses.
Ir beam break detector circuit.
Arduino has an led connected on pin 13 pin 11.
Teensy 2 0 has the led on pin 11 pin 6.
Define ledpin 13 pin 13.
Teensy 2 0 has the led on pin 6 pin 13.
Here is how the transmitter works.
As you see i have use one 556 timer which contains 2x555 timers.
The circuit the transmitter.
Int sensorstate 0 laststate 0.
Variable for reading the pushbutton status void setup initialize the led.
One straightforward way is to use the library to modulate an ir led at 38khz and use a standard ir detector module to detect the signal.
Range of the circuit is about 5 meters if the transmitter and receiver are properly aligned.
It is based on the working of the popular ir sensor module tsop1738 which senses 38 khz infrared pulses from the ir led of the transmitter.
Break beam sensor circuit february 1 2020 by arfan leave a comment infrared beam break detector infrared motion detector circuit ir sensor arduino tachometer hardware pyroelectro news s laser break beam sensor id 2122 17 50 adafruit garage door opener electric eye.
Invisible infrared alarm circuit d mohankumar 12 01 2010.
They work by having an emitter side that sends out a beam of human invisible ir light then a receiver across the way which is sensitive to that same light.
Teensy 3 0 has the led on pin 13 define sensorpin 4 variables will change.
This is an ir beam breaking alarm ideal to use in entry or passages.
Ir beam breaker circuit d mohankumar 08 28 2010.
The answer was too long for the comments section so i ve extended into a blog post.
Infrared beam break detector p.
Schematic of ir beam breaker circuit.
Application an infrared detector that sounds a buzzer when an ir beam is broken meaning the ir signal.
Infrared ir break beam sensors are a simple way to detect motion.