You can power an Arduino project multiple ways. You can use your computer for power from USB, a 9 volt battery, a wall power adapter and more.
With an HC-SR04 and a Piezo Buzzer you can create an audio distance sensor like the one many cars have for backing up. Functional Parts in the Project: Arduino Uno – https://store.arduino.cc/usa/arduino-uno-rev3 HC-SR204 Ultrasonic Sensor – https://amzn.to/31AGgYC […]
PIR Sensors (Passive Infrared) are the standard sensors used for motion detection. They offer a wide field of view and are easy to configure, but offer only HIGH/LOW output and are not overly accurate. Functional […]