Ultrasonic fingerprint sensors are supposed to be superior, so why are they worse for me?
Phones have mostly ditched curved edges due to user request, but the fingerprint reader under most screens is the new problem ...
Hackaday3y
Turn A Parking Sensor Into An Anemometer
[Andy] demonstrates building an ultrasonic anemometer using a cheap after-market parking distance sensor kit and an Arduino ... added advantage of including waterproof ultrasonic transducers ...