How to detect yellow school bus from 100 to 200 yards away?
Is there any type of electronic component that I can use to build something to detect a yellow school bus that is up to 200 yards away?
I live on a very straight busy road. From my mailbox I can see about 300 yards down the street before it curves.
Is there something out there that would allow me to build a device, mounted to my mailbox post, that will chime a bell in my house when it detects a yellow school bus approaching from at least 100 yards away?
Note that I believe it must have the ability to detect color because we also get a lot of big trucks driving by that could set it off if I were detecting by size.
Just wondering if this would be possible.