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 ...

Makers, developers and enthusiasts building distance related projects may be interested to know that the HC-SR04 ultrasonic sonar distance sensor is now available to purchase directly from the ...

I’m sure you have at some point played with the HC-SR04 Ultrasonic sensor modules. Shifting to the new waterproof ultrasonic sensor is not a big deal, since it’s pretty easy to modify some example ...

Being able to measure ducted airflow cheaply and non-intrusively, like with this ultrasonic ... into a functional sensor. [ItMightBeWorse] is using readily available HC-SR04 sensor boards and ...