1x Arduino UNO or Genuino UNO 1x USB 2.0 cable type A/B 1x Ultrasonic Sensor 1x LED 1x 220 ohm resistor 1x Breadboard 1x Jumper Wires 1x (Optional) 9V Power Adapter for Arduino 1x (Optional) Screw ...

Upon successful upload of the code and opening the serial monitor, the Arduino board will measure the distance using the connected ultrasonic sensor. The measured distance in centimeters will be ...

Instead, it relies on an ultrasonic distance sensor to detect a hand (or foot) waved in front of the door. An Arduino Leonardo runs the show, sounding a buzzer when the ultrasonic sensor is triggered.

Social isolation has been shown to be the sole effective defense against COVID-19, according to the World Health Organization. In this study, a prototype for tracking human positions in an outdoor ...

[lingib]’s dual sensor echo locator uses two HY-SRF05s, but the cheap and plentiful HC-SR04s will work, too. Both sensors are arranged for maximum beam overlap and wired up to an Arduino Uno.

Recently, passenger vehicles were equipped with an Advanced Driver Assistance System (ADAS) feature in assisting drivers to control the vehicle, which gives an alarming signal about possible dangers.