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 Tagged adafruit wave shield, arduino, ultrasonic, ultrasonic distance sensor, wav shield ← Fabricate Your Own 7-Segment Displays Easy Capacitive Touch Sensors In Eagle → ...

In this mode, you can interface the HC-SR04 ultrasonic ping sensor with a servo motor and the main board (Only some reward tiers include the extra servo motor PCB and servo motor kit).

40-KHz ultrasonic transmitter and receiver pair (40T/R-B/W) Schematic of the HC-SR04 module Get to the point In truth, my intent is not to provide a new translation of some well-worn “Arduino & ...

A low-cost (~$100), do-it-yourself (DIY) ultrasonic water level sensor/datalogger has been designed, constructed, and tested for use in education, citizen/community science, and research settings. The ...

If this sounds like rocket science to you, well, it’s not, as someone has built such a device using a cheap Arduino board. Paired with two sonic sensors mounted on the garage ceiling, the ...

Arduino has found its way into yet another musical device. I came across the 'UFO' while in Berlin. It's a MIDI controller that lets you compose music or control synthesizers by waving your hands ...

A new analog ultra-sonic sensor has has an accuracy of ±0.002" or 0.05% of range, whichever is greater at 25°C. It also has a built-in temperature compensation target to monitor and compensate ...