Buzzer-happy birthday tune

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Dabu WhiteHacker

Joined Sep 5, 2017
66
is there a way of creating happy birthday tune without microcontroller
i am asking this bcz i saw a toy which creates happy birthday tune on pressing botton but when i opened the toy there was no micorcontroller in it
i dont have the toy right now or else i would have already reversed engineered it i just wanted to know if there is way to creat that tune without microcontroller
 

ian field

Joined Oct 27, 2012
6,539
is there a way of creating happy birthday tune without microcontroller
i am asking this bcz i saw a toy which creates happy birthday tune on pressing botton but when i opened the toy there was no micorcontroller in it
i dont have the toy right now or else i would have already reversed engineered it i just wanted to know if there is way to creat that tune without microcontroller
There's everything from happy birthday to jingle bells from various manufacturers - fairly sure UMC do a range.

TO92 package used to be most common, nearly all are "black blob" (COB) nowadays.

No idea what's inside - AFAIK: its PWM output.
 
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