I have a project with a hallway that is 30-40m long and 6ft wide. I was planning to use PIR motion sensors to detect motion in the hallway but I am worried they may not be focused enough (they are easy to trigger over a wide area).
I was thinking instead of using distance sensors but they are limited to about 150cm and they are analog values.
Another obvious option is to use cheap lasers and photodiode pair to basically make "tripwires".
What would be the cheapest and easiest option to implement?
Maybe there is another solution I should consider?
I was thinking instead of using distance sensors but they are limited to about 150cm and they are analog values.
Another obvious option is to use cheap lasers and photodiode pair to basically make "tripwires".
What would be the cheapest and easiest option to implement?
Maybe there is another solution I should consider?