Hi! My name is Alberto, and I have a little problem about the combo in the title: I've an official Arduino Uno, and mounted on top an official Ethernet shield. I've wired a buzzer into digital pin 12, via an 220ohm resistor. It sound way to low. As a workaround, using an analog pin (A1), it sound…

Arduino Uno + Ethernet Shield + Buzzer: Low sound

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