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li2hub/Buzzer-nodemcu.ino

Last active October 23, 2018 07:42
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Buzzer-nodemcu.ino
int buzzer = D1 ;
void setup ()
{
pinMode (buzzer, OUTPUT) ;
}
void loop ()
{
digitalWrite (buzzer, HIGH) ;
delayMicroseconds(500); ;
digitalWrite (buzzer, LOW) ;
delayMicroseconds(500); ;
}
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