The ultrasonic sensor uses sonar to determine the distance to an object. We’ll show you how to wire the sensor to the ESP32 and provide several example sketches to determine the distance to an object using the
Maker Pro. Use an LDR Sensor. Available online: https://maker.pro/arduino/tutorial/how-to-use-an-ldr- sensor-with-arduino/ (accessed on 14 September 2018). 56. Arduino. Arduino Mega. Available online: https://www.arduino.cc/en/pmwiki.php?n=Main/ arduinoBoardMega/ (accessed on 14 ...