Freenove ESP32 - Page 95

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Chapter 8 Buzzer
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Sketch
Open “Sketch_03_Buzzer” folder in “Freenove_Robot_Dog_Kit_for_ESP32\Sketches” and then double-click
“Sketch_03_Buzzer.ino”.
Sketch_03_Buzzer
Upload the sketch and the buzzer will beep three times at a fixed frequency and then emit a pleasant sound.