This post is a review of the popular waterproof ultrasonic sensor JSN-SR04T. ... Below is the Arduino Sketch used to test the JSN-SR04T ultrasonic distance sensor. This sample code does not require a ...

Update March 4: The first phones with ultrasonic in-display fingerprint sensors, the Samsung Galaxy S10 and S10 Plus, are now on sale. Original story: It’s day one of Qualcomm’s annual ...