i am following this setup to build a LED morse code system to a escape room, but how can i connect a speaker that makes sound when the LED lights up.
please help me
the speaker im using is a pkm22fpp-40
i am following this setup to build a LED morse code system to a escape room, but how can i connect a speaker that makes sound when the LED lights up.
please help me
the speaker im using is a pkm22fpp-40
Usually speakers need drivers.
found out how to do it!
i added this to my code:
const int speakerPin = 8;
void setup() {
pinMode(speakerPin, OUTPUT);
}
void sendDot() {
tone(speakerPin, 1000);
delay(DOT_BLNK_LEN);
noTone(speakerPin);
}
void sendDash() {
tone(speakerPin, 1000);
delay(DASH_BLNK_LEN);
noTone(speakerPin);
}
You could put an active buzzer across the LED legs.
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