Data Sheet

Guide V1.0
Email: [e-mail] Web: www.elecrow.com ---Designed by Elecrow Keen
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Compile and upload
Tips: Refer to the operation demo (Step4 to Step8).
Language reference
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digitalRead()
== (equality)
Application effect
Whichever button is pressed first, then the corresponding LED will be on!
If you want to reset, hit the Reset button.
Lesson 8: Active buzzer
Overview
This is an active buzzer experiment. Active means that the direct power supply can make
a sound.
Specification
Voltage: DC 5V
Min Sound Output at 10cm: 85dB;
Total Size (Pin Not Included): 12 x 9mm/0.47" x 0.35"(D*H)
Pin definition
Active Buzzer UNO R3