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Recommended Repellent

Cat detection/repellant device – Timer delay circuit for motion detection system

Well here’s a cool little cat detection and repellent device using a sprinkler controller and some timer delay circuits.  I think there’s a lot of timer delay circuits, especially the 555 being used for a lot of these DIYs, but I think it would be easier to do with BASIC controllers… OR you can probably just buy a ultrasonic rodent repellent f

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