In the exercise task of Home Automation, we are supposed to make a buzzer controller. I followed the youtube tutorial(https://www.youtube.com/watch?v=Rr8G-1ddl3Q) for that and have a confusion that if the positive terminal of the buzzer is connected to the 0 pin then why do we choose A0 pin in the hardware configuration?
Hi @kp2061,
A buzzer is typically connected to a digital pin on the Bolt IoT WiFi module or any microcontroller. Buzzer components usually have two pins: a positive (anode) and a negative (cathode). The positive pin is connected to a digital pin to control the buzzer, while the negative pin is connected to the ground (GND) pin.
So, you would connect the positive (anode) pin of the buzzer to a digital pin on the Bolt IoT WiFi module (e.g., GPIO0 or any other digital pin you choose), and the negative (cathode) pin of the buzzer would be connected to the ground (GND) pin.
In your code, you would then use the specified digital pin (e.g., GPIO0) to control the buzzer and make it produce sound by turning the pin on or off. If you mistakenly connect the buzzer to an analog pin (A0) instead of a digital pin, you might not get the desired functionality as analog pins are used for reading analog sensor values, not for controlling components like buzzers. Always ensure you connect the buzzer to a digital pin when you want to control its sound output.
Understood. Thank you.
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