Inside [Klaus]’ device is an Arduino Uno, an HC-SR04 ultrasonic distance sensor, and an Adafruit Wave Shield. Originally, this parking/distance sensor used a small TFT to display the distance to ...

With a standard old HC-SR04 ultrasonic sensor ... As simple as this project may sound like for anyone who has a bunch of these little Arduino-compatible modules lying around and has probably ...

Besides helping you test prototypes of your wacky Arduino ideas ... or another temperature sensor. Likewise, ultrasonic and ...