Eckstein komponente KS0530 - Page 108

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//***********************************************************************
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(6)Test Results:
Upload code to Keyestudio development board, power amplifier module
will emit“do re mi fa so la si do”.
(7)Extension Practice：play music
/*
keyestudio sun_follower
lesson 4.2
buzzer
http://www.keyestudio.com
*/
#define buzzer 6 //buzzer pin to D6
void setup() {
pinMode(buzzer, OUTPUT);//set digital 6 to OUTPUT
}