Instead, it relies on an ultrasonic distance sensor to detect a hand (or foot) waved in front of the door. An Arduino Leonardo runs the show, sounding a buzzer when the ultrasonic sensor is triggered.

Posted in Arduino Hacks, green hacks Tagged arachnophobia, Arduino Pro, feature creep, rain barrel, ultrasonic distance sensor ...

For the physical feedback, Denver has made some vibrating boxes that you put in your pockets. An Arduino polls the ultrasonic sensors and provides feedback via the boxes. This completely frees up the ...

The official Arduino Blog has this week featured a new project which demonstrates ultrasonic Arduino to Arduino communication by Brazilian maker Eduardo Zola. Showing that you can communicate ...

Qualcomm has announced its new 3D Sonic Sensor Gen 2 ultrasonic sensor for in-display fingerprint readers. The new sensor is 77 percent bigger and 50 percent faster than the old models, and it ...