How to use dual lens visitor counter for accurate people counting

Alright, folks, today I wanna talk about trying to get an accurate headcount in my little shop lobby. The old single sensor was useless, honestly. People walk in two at a time, or one walks out while another walks in? Total mess, numbers always wrong. So, I figured,...

infrared visitor counter

Okay, so yesterday I got this itch to build a simple infrared visitor counter. You know, something that goes “beep” when someone walks through a door and keeps track. Sounded straightforward, right? Famous last words. Digging Through the Parts Bin First...