I need help building a cicuit. I want to place 3 IR sensors at various distances, up to 300 yds away from a control box that will record time and date of a trigger from any of the 3 sensors. I already have control box and 1 sensor ( hardwired ) working. Now i want to use 3 ( remote ) and 1 control box and distinguish which sensor triggered. I was thinking small fm transmitter with 1,2 or3 pulses to determine wich sensor and fm receiver at control box. Does this sound doable (is doable a word?) or is there an easier way?
The control box is a basic stamp with real time clock if thats any help.
Thanks
The control box is a basic stamp with real time clock if thats any help.
Thanks