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Figure 15-1:
Buzzer module
15. Buzzer
The board is also equipped with
SPT-1325A
piezo buzzer
. It is an electric component which can be used to create sound when is
provided with electrical signal. This is usually a PWM signal coming from a microcontroller pin. Frequency of the signal determines
the pitch of the sound and duty cycle of the signal can be used to increase or decrease the volume. Piezo buzzer is connected to the
microcontroller pin
N18
.
Содержание mikromedia 5
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