I've been eyeing using an Ultrasonic distance sensor for an upcoming project; either the Parallax Ping or the OSEPP Ultrasonic sensor (I think they are identical other than branding).
Ex: https://www.parallax.com/product/28015
My concern is, this will be used at home where I have pets. I don't wish to injure nor annoy my pets.
Will the ultrasonic sensor cause problems for the pets? Should I instead use something different such as an infrared sensor?
(I'm mainly concerned about cats and dogs, although would be curious about other types of pets such as birds, etc…)
Best Answer
That part appears to use a frequency of ~40 KHz, fairly normal from what I've read for ultrasonic detectors or that sort. According to this chart on Wikipedia, that falls within the hearing range of quite a few animals, including cats and dogs. Does that mean using that part will be painful? Bothersome? Just slightly annoying? I dunno. :)