First off, just as a fair warning, I am a newbie with Arduino and electronics. Anyways I am making a project where I need to be able to sense when somebody passes a certain point in a hallway. I plan to use two sensors to know which way the person is traveling. I cannot find a sensor that will work. Here are the constraints I need for the sensor:
be able to sense a human body
0-degree viewing angle
can sense things at least 1.5ft away
can work with two side by side (ultrasonic will not work)
Any laser break beam will work. Don't worry about house lights, they are irrelevant.
Although the PIR motion sensors can work just fine, it would take more time and effort for you to understand and not be annoyed with them.
OK, I can't find any of those break beam sensors that would work. The hallway is a little over 2.5ft wide and the ones I have found can only sense up to 20 inches. Also, do these break beam sensors have that annoying delay time thing that the PIRs I own have? I really want to avoid that feature.