An Arduino compatible board (e.g. Arduino UNO): Arduino UNO / Arduino Mega A HC-SR04 ultrasonic sensor / A Ping))) ultrasonic sensor: HC-SR04 (Optional - For aqqurate distance values) A DHT ...

Ultrasonic Sensor HC-SR04 (SEN-15569) This is the HC-SR04 ultrasonic ranging sensor. This economical sensor provides 2cm to 400cm of non-contact measurement functionality with a ranging accuracy that ...

Arduino Uno – Powered Parking Guidance System with Ultrasonic Sensors" is a smart and innovative solution for simplifying the parking process in crowded urban environments. This paper leverages the ...

This paper provides details about the design and operation of a Collision Avoidance System in smart cars, with the Arduino board as the central control unit, interfaced with an ultrasonic sensor, LEDs ...

Thus, they entered a heart rate sensor to our 2025 One Hertz Challenge! The build is based around a Wemos D1 mini, a ESP8266 development board.

Upgraded sensors and a sharper display The text frames the Pixel Watch 4 as a major step up from its predecessors, calling out improvements in display clarity and overall responsiveness.