A quick, satisfying one, we're making a buzzer beep repeatedly, exactly the kind of audible alert you hear from a car's seatbelt warning or a low-fuel chime. This experiment is intentionally simple, a good confidence-builder and a nice break before the more involved motor experiments coming up next.

2. Scope

We'll drive a buzzer with a plain GPIO pin, toggling it on and off with a fixed delay to produce a repeating beep pattern. This reinforces basic HAL_GPIO_WritePin() and HAL_Delay() usage in a new, audible context, quick, but a useful sanity check any time you're not sure your toolchain is behaving.

3. Prerequisite

3.1 Hardware

• STM32 Nucleo-F070RB development board

• Active buzzer module (built-in oscillator, confirm this is what you have, see Section 5.1)

• Breadboard and jumper wires

• Micro-USB cable

3.2 Software

• STM32CubeMX (standalone)

• STM32CubeIDE

• ST-LINK USB driver