Over the past year or so, a friend and I have been mulling over a device that can be used in a variety of ways to deter animals from entering certain perimeter areas – such as keeping a dog from doing his business at the front gate of your house. There are other applications as I have learned that apply to keeping wolves off of ranches, or keeping coyotes away from designated areas. The high level design involves a circuit that produces an ultrasound output at about 20 KHz combined with a circuit that detects motion and size. The motion … Continue reading The WanAway… A work In Progress