Motion-Sensing on Scholionhttps://scholion.thluiz.com/tags/motion-sensing/Recent content in Motion-Sensing on ScholionHugo -- gohugo.iopt-BR© 2026Tue, 06 Oct 2026 04:20:06 +0100Motion sensing using the doppler effecthttps://scholion.thluiz.com/notes/motion-sensing-using-the-doppler-effect/Tue, 10 Mar 2015 21:53:24 -0300https://scholion.thluiz.com/notes/motion-sensing-using-the-doppler-effect/The page explains how a laptop speaker and microphone can detect motion by sending an inaudible tone, measuring the Doppler shift in the microphone input, and using bandwidth differences for sensing, scrolling, and sound control.