Buzzinga
In this section, we'll explore some fun activities using the buzzer. I chose the title "Buzzinga" just for fun (a nod to Sheldon's "Bazinga" in The Big Bang Theory); it's not a technical term.
- Passive Buzzer
- Jumper Wires:
- Female-to-Male jumper wires for connecting the Pico 2 to the buzzer pins (Positive and Ground).
The buzzer has two pins: Positive(Signal), Ground; The positive side of the buzzer is typically marked with a + symbol and is the longer pin, while the negative side (ground) is the shorter pin, similar to an LED. However, some passive buzzers may allow for either pin to be connected to ground or signal, depending on the specific model.
By the way, I used an active buzzer in my experiment. A passive buzzer is recommended if you plan to play different sounds, as it provides a better tone.
Connection Overview
| Pico Pin | Wire | Buzzer Pin | Notes |
|---|---|---|---|
| GPIO 15 |
|
Positive Pin | Receives PWM signals to produce sound. |
| GND |
|
Ground Pin | Connects to ground. |
Before moving forward, make sure you've read the following sections and understood the concepts.
- PWM introduction in the Blink LED section
- More on PWM in the servo section
- Calculating top in the servo section