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WAV Doorbell

This electronic doorbell is essentially a small WAV file player based around an ATmega328P. When a guest presses the bellpush the device is activated and plays out a short WAV file using its built-in PWM module. This means that you can customise the sound of your doorbell in just the same way as you can the ringtone on your mobile phone. What’s more, you can load any sound you like into the device.
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