Motion Detector with Arduino (PIR + LED + Buzzer) This project uses an Arduino board with a PIR motion sensor to detect movement. When motion is detected, an LED lights up and a buzzer sounds. It's ...

It’s an electronic device commonly used to produce and signaling a procces that is happening through a sound, beep or etc. The Piezo buzzer produces sound through electricity. Some uses of Piezo ...

Hit the link below to check out the full project build, step-by-step, including the code you'll need to get the Arduino working with the components he used. Art, Arduino, a Sound Sensor, LEDs, and ...

Now it is very easy to build your own siren sound alarm, small enough to be carried in a garment pocket. This powerful audio-visual alert device is realized using the renowned Arduino platform. The 9V ...

An Arduino UNO-based system using the MQ135 sensor to detect harmful gases. Alerts are given via LED and buzzer, with real-time data shown on an LCD and sent to a mobile app via Bluetooth for ...