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cat_repeller [2015/03/27 17:52] – kingkevin | cat_repeller [2015/05/03 22:32] – add pictures kingkevin | ||
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It's just a loud ultra-sound (> 20 kHz) in a range the cat can hear, but not humans can't. | It's just a loud ultra-sound (> 20 kHz) in a range the cat can hear, but not humans can't. | ||
Else it would annoy us too. | Else it would annoy us too. | ||
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+ | | {{cat_repeller: | ||
+ | | PIR motion detector | IR range sensor | piezoelectric element | | ||
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+ | | {{cat_repeller: | ||
+ | | all elements connected | final installation | |