These work just like a buzzer… You give it 12V and it makes noise.) (I have a “ding dong” device as a pre-alarm on my home & car alarms. However, most buzzers require a bit more current so you’ll need a MOSFET to boost the current/voltage. So, you can simply turn it on & off with an Arduino pin, just like you turn on & off an LED. A regular (voice coil) speaker takes more current and it needs an amplifier.Īctive Buzzer:- buzzer generates the sound itself. (It shouldn’t be an issue in your application.) A piezo speaker can be driven directly from the Arduino (probably with a series resistor). This could be an issue if your program (sketch) is doing lots of other things at the same time. The only downside (besides a bit of extra programming) is that it takes processor-time to generate the sound. With enough hardware & software you could make it play music. The Arduino needs to generate the “tone”. Passive Buzzer :- Device or speaker, you have to send it an AC “sound signal” and you can control the sound.
0 Comments
Leave a Reply. |