and after running across a $4 ultrasonic sensor, decided to build his own speaking distance sensor (.de, Google Translation). Inside [Klaus]’ device is an Arduino Uno, an HC-SR04 ultrasonic ...

an Arduino Uno uses an ultrasonic sensor pair mounted atop a servo. As the servo rotates, the returns from the ultrasonic sensor are plotted on a screen run by a Raspberry Pi. If an object is ...

That’s it. In truth, my intent is not to provide a new translation of some well-worn “Arduino & Ultrasonic Sensor” tutorial, which are available all over the web. A bit of Googling will hopefully get ...

It comes with a good selection of frequently used hardware like basic electronics (e.g., resistor, diode, capacitor), input (e.g., push button, ultrasonic sensor ... program them with an Arduino ...