User Manual

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In this experiment, an active buzzer is used. When the GPIO of Raspberry Pi output is

supplied with low level (0V) by programming, the transistor will conduct because of current

saturation and the buzzer will make sounds. But when high level is supplied to the IO of

Raspberry Pi, the transistor will be cut off and the buzzer will not make sounds.

Experimental Procedures

Step 1: Build the circuit (Pay attention to the positive and negative poles of the buzzer)

For C language users:

Step 2: Change directory

cd /home/pi/Sunfounder_SuperKit_C_code_for_RaspberryPi/06_Beep/