Unlike a real theremin, you can trigger this one with anything the ultrasonic sensor can see. The Arduino audio quality is not superb, of course, but it is still a fun rainy day project.

The following article shows you how to interface the SR04T Waterproof Ultrasonic sensor with an Arduino Uno to obtain distance data. ... Setup Function. In the Void Setup() function, we simply ...

Ultrasonic Sensor Measurement: The HC-SR04 ultrasonic sensor measures the distance to an object by emitting a sound wave and measuring the time it takes for the echo to return. The sensor is connected ...

1 Arduino Ultrasonic Sensor (HC-SR04) 1 buzzer; Ultrasonic sensor, mounting circuit; It is a very simple circuit. On the one hand, we will have all the alerts, acoustic and visual, and on the other ...

Ultrasonic Sensor Module. There are many types of Arduino distance sensors, but in this project we have used the HC-SR04 to measure distance in range of 2cm-400cm with an accuracy of 3mm.The sensor ...

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.

To create a 2-Dimensional Radar which maps the surroundings using SONAR (Ultrasonic Sensors) and Arduino-UNO microcontroller, which displays the distance of obstacles from the SONAR. This project ...

A simple robotics project simulated in Tinkercad based on Arduino Uno. It uses ultrasonic sensors for obstacle detection and can do basic movements using DC motors. The primary objective of this ...