Lets say i have 2 separate systems called Box A and Box B. Box A has an IR laser beam attached to it.
What equipment can i use to make Box A make a certain action ONLY when the IR laser attached to is pointed at Box B?
I am using arduino pro mini (which contains Atmega328p AU ) along with cc2541(HM-10) to process and transfer data over BLE to smartphone. I...
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