Hi, I am looking for a component to control from a microcontroller to make a beeping noise, nothing to loud but to sound electronic and not like a buzzer. I just need an audible alert that is not to irritating. Any ideas would be great, I don't have a DAC on the microcontroller, and the simpler the better.
Thanks
Go to the DigiKey website, type 'audio' into the search box, and you'll get a couple thousand beepers, buzzers, sirens and speakers to choose from.
HTH
Go to a Radio Shack store if there are any in your area, they have beepers.
Shaun
make
Define 'simple'. If your microcontroller has spare PWM or frequency outputs, a capacitor and a speaker (or even an earbud from a broken headset) will do the job. Is size important (wristwatch-style piezoelectric transducers are small), or parts count (there are sonic-output functional modules), or mounting in a panel (things like Mallory Sonalert come with mount hardware kits)?
In terms of simplicity of wiring, you could use a relay to control your doorbell (which might be a full four-second Westminster chime with motorized sequencing), it'd STILL be 'simple' in some sense.
make
Or the traditional way, a unijunction transistor feeding a speaker, which beats a 2transistor multivibrator feeding a speaker since it uses=20 one active component (albeit one likely harder to find).
555s basically took over that field when they came along.Michael
Have something to add? Share your thoughts — no account required.
Ask the community — no account required