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I NEED to buy one of these immediately! (at various points my two oldest kids have rick-rolled me and it's pay-back time).
by smoyer 9y ago
I NEED to buy one of these immediately! (at various points my two oldest kids have rick-rolled me and it's pay-back time).
- bigiain 9y agoYou can build one yourself if you want: https://hackaday.io/project/9085-ultrasonic-directional-speaker-v1 https://hackaday.io/project/9085-ultrasonic-directional-spea... Its reasonably well known tech in the maker community these days... I first saw one demoed at a Dorkbot meeting 10 years or so ago.
- smoyer 9y agoI was actually just digging through the Github project to see what it would entail.