Hello, I need some help with my school project. I found a schematic here LCD Digital Alarm Clock Arduino – Microcontroller Based Projects . I did everything fine but when alarm is supposed to turn on piezo buzzer doesn't do anything. Is problem in code or did I use wrong buzzer which works on 5V.

Digital alarm clock

ReverseEMF May 7, 2018, 8:05pm 15

larryd:
The site linked you linked (instructables) has infection web site links on it !

Really? I don't see that. How did you determine that?

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