This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module,used here for non-contact object detection purpose. The HC-SR04 module includes ultrasonic ...

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.

For instance, in the Uno board, pins D0 and D1 can be used as standard digital pins where you can connect common components like LEDs, ultrasonic sensors, and motors.

Watch the demonstration video below to learn more about Zola’s project which uses TX and RX transducers desoldered from an HC-SR04 module, together with a pair of Arduino Uno development boards ...

An Arduino polls the ultrasonic sensors and provides feedback via the boxes. This completely frees up the user's hands for other tasks. Advertisement. ... Great idea. I have been using similar sensors ...

I would like to see how fast I can run 100m and that’s why I build this project, it’s simple to build, you don’t need any fancy tools and we will use popular components like Arduino, buzzer ...