Raspberry Pi computers, with the exception of the Zero range, all have audio output on board. See if you can make Morse code sounds by changing the duration of the sleep statement. Run it at the command line: python3 buzz.py Now, install the GPIO Zero Python library by typing this at the command line: sudo apt install python3-gpiozeroĬreate a file called buzz.py in your favourite editor and enter the following: import time Try connecting a buzzer’s red wire (positive) to GPIO pin 22 (Broadcom numbering) and the black wire (ground) to any GND pin. A cheap active buzzer can be quickly added to Raspberry Pi’s GPIO. The simplest place to start is with the humble buzzer. Need to keep it simple and under a pound?
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