Fitbit Sense
Health watch with EDA sensor for stress management
What it does
Fitbit’s most advanced health smartwatch, with world’s first electrodermal activity (EDA) sensor on a smartwatch to help manage stress, advanced heart rate tracking, new ECG app, and an on-wrist skin temperature sensor with 6+ days of battery life.
Does the same job
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Hi HN, I built Eigendrum, a web tool that solves the 2D wave equation for arbitrary shapes so you can hear what they sound like as drums. How it works: * Solves -∇²u = λu using finite element analysis (Kφ = λMφ) on a triangle mesh. * Validated to <0.1% error against closed-form solutions for circles (Bessel zeros) and rectangles. * Sound model factors in strike location, Rayleigh damping, and mallet width. * Includes Kac drums I & II to demonstrate identical sound spectra from different geometries. * No frameworks, build steps, or dependencies. Repo and tests:…
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Launched alongside, August 2020
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Life & fun · 2020 · storycreatorapp.com
