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Page 35 - RoboGenius Pro C5
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    These are the big, easy-to-use pins at the bottom of the Micro:bit. You can connect
                     them using jumper wires. The working of these pins are as follows:

                        n Pins 0, 1 and 2 are general-purpose input/output (GPIO) pins. They can act as
                        inputs to detect signals from sensors or buttons and as outputs to control devices
                        such as LEDs, buzzers or motors.

                        n The 3V pin provides power to external devices and can also power the Micro:bit

                        itself if it is not connected to a battery.

                        n The GND pin or ground pin, completes the electrical circuit and is essential when
                        connecting the Micro:bit to other components.

                     Small Pins (3 to 22)

                     The small pins on the Micro:bit, numbered 3 to 22, are used for advanced projects
                     that require more connections than the three large pins provide. Some of these pins

                     are already connected to the LED display and buttons (A and B), so they must be
                     used carefully to avoid interfering with these built-in components.

                          Ask AIRO

                          What happens if we connect an output device to the wrong pin of the micro:bit?

                     BUZZER

                     A  buzzer  is  a  small  electronic  device  that  produces  sound  when powered  by
                     electricity. It is commonly used in alarms, timers and notifications to alert users
                     through beeps or tones.

                     Buzzers  can be  easily  connected  to  microcontrollers  like  the  Micro:bit  to  create

                     sound-based responses, making them useful for interactive projects.

                     Connecting a Buzzer with Micro:bit

                     In this project, you will learn how to connect a buzzer to the Micro:bit and make it
                     produce sound using MakeCode. You will connect the buzzer to the Micro:bit’s pins
                     and program it to play sound continuously. The buzzer acts as an output device,

                     converting the electrical signals from the Micro:bit into sound.

                                                                              Micro:Bit and the World Around Us
                                                                                                                        33

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