Connect push buttons to digital pins on the Arduino UNO. Update the buttonPins array in the code accordingly. Connect the piezo buzzer to a PWM (Pulse Width Modulation) digital pin on the Arduino UNO.

For-fun experiment with an Arduino UNO, where a passive piezo-buzzer’s pitch is controlled by an ultrasonic sensor (HC-SR04). The whole idea of this “pseudo-theremin” is to obtain the proximity to the ...

After uploading the code the Piezo will start making short beeps. On bright light the Piezo will only beep and on dark light it will be short. Some ideas for this experiment: Alarm for Lights in the ...

Figure an Arduino most matches the "Other" category. To be specific, it isn't an Arduino brand, it is a DigiSpark, but the trouble isn't with the device itself. The problem is with a buzzer. I got ...

The project ‘SafeHaven Shield,’ is an Arduino-driven home security system seamlessly integrating RFID and PIR sensors with a keypad lock. ... an LCD when entering the house, meeting predefined ...

An Arduino Uno provides the computational backbone, a custom-designed PCB shield adds the traditional D-pad controls and input buttons, while a LED matrix delivers 64 pixels of graphical feedback.

This paper proposes the use of Rochelle salt (KNaC4O6.4H2O) as a piezoelectric sensor for efficient smart energy saving systems. The piezoelectric properties of Rochelle salt tested for different ...