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248 8. INTERMEDIATE LEVEL PROJECTS
a passive buzzer is used. The buzzer is connected to pin PWM port PA_8 (PWM1/1, pin
23 connector CN10) of the Nucleo-F411RE development board through a transistor switch
as shown in Fig. 8.118.
8.35.5 The Construction
Fig. 8.119 shows the project constructed on a breadboard. Jumper wires are used to connect
the buzzer, transistor, and the resistor to the development board.
FIG. 8.118 Circuit diagram of the project.
FIG. 8.119 Project constructed on a breadboard.
