As photons (light) land on the detector, the resistance will decrease. The more light is we will have a lower resistance. By reading different values from the sensor, we can detect if is it light , ...

Materials Required Arduino Uno Piezoelectric transducer 1N4007 diode Capacitor (10 µF or 100 µF, 25V) LED Resistor (220 ohms) Breadboard and jumper wires Circuit Diagram Description Piezo Transducer: ...

This paper presents the performances of rainfall energy harvesting through the use of a piezoelectric transducer and an Arduino-based measuring system. Different studies agree on the possibility of ...

When reed switch is opened, pin 2 of Arduino goes high with the help of the pull-up resistor R2, and the alert signal is available through the piezo-speaker PZ1 (not an active piezo-buzzer). At the ...

Using an SOI-based electro-optical approach, researchers devised a non-piezoelectric ultrasonic sensor with reduction smaller than a blood cell.

Build a simple LPG gas leakage detector using Arduino and MQ-5 sensor. This beginner-friendly project features buzzer and LED alerts, circuit diagram, and complete Arduino code for home safety.