THIS CODE WILL PROVIDE A DEMO USE OF THE HC-SR04 CONNECTED TO AN ARDUINO NANO (ATmega328p) THINGS YOU NEED FOR THIS DEMO: 1.) Install Arduino IDE 2.) Install CH340 Driver (Google how to install CH340 ...

超音波センサはお馴染みの HC-SR04を使います。 当然、防水仕様ではないので、水がかからないように、センサ前面に長い（1メートル）のパイプを取付けます。 1メートル水位が上昇するとセンサが水没し、間違いなく故障しますが、仕方ないですね。

A very simple HC-SR04 example to go with the Youtube video. - Arduino_HC-SR04/Arduino_HC-SR04.ino at master · LessonStudio/Arduino_HC-SR04 ...

The automation of height-increasing bridges during floating events is a crucial engineering challenge in areas prone to flooding or water surges. It proposes a solution to adjust the bridge height ...

The HC-SR04 sonar modules are available for a mere pittance and, with some coaxing, can do a pretty decent job of helping your robot measure the distance to the nearest wall. But when sellers on eB… ...