Phones have mostly ditched curved edges due to user request, but the fingerprint reader under most screens is the new problem ...

Phones have mostly ditched curved edges due to user request, but the fingerprint reader under most screens is the new problem ...

While it’s not radar, subbing in ultrasonic sensors is how ... That required a switch to an automotive backup sensor, which uses a single transducer, and a 3D printed parabolic dish reflector ...

like with this ultrasonic flow meter, could be a big deal for DIY projects and the trades in general. The principle behind the sensor [ItMightBeWorse] is working on is nothing new. He discovered a ...