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 ...

Just connect an piezo to the board and you are good to go. Pin 11 is used in every sketch because some piezo speakers can be connected between it and the close GND pin without any wiring. You can use ...

This is a simple Arduino Program that utilizes an Arduino Uno Microcontroller, MFRC-522 RFID Reader, An RGB Module, A Servo, A Piezo Speaker(Buzzer). This program simulates a simple access control ...