If you plan to drive a servo motor with a microcontroller, which hardware feature should you ensure is available?

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Multiple Choice

If you plan to drive a servo motor with a microcontroller, which hardware feature should you ensure is available?

To drive a servo, you need to send a precise control pulse from the microcontroller. The essential hardware capability is the ability to produce digital output signals on a pin, i.e., a general purpose I/O (GPIO) pin. A servo is controlled by a pulse train that repeats roughly every 20 ms, with the pulse width (about 1 ms to 2 ms) determining the angle. You can generate that pulse using a hardware PWM peripheral or by a small software routine that toggles a GPIO pin at the right times. Either way, you’re relying on digital output through a GPIO pin to send the servo the control signal. Analog-to-digital conversion isn’t needed for sending the control signal, I2C pins are for communication, and while a dedicated PWM pin is ideal for clean timing, it ultimately serves as a GPIO that can produce the PWM signal.

To drive a servo, you need to send a precise control pulse from the microcontroller. The essential hardware capability is the ability to produce digital output signals on a pin, i.e., a general purpose I/O (GPIO) pin. A servo is controlled by a pulse train that repeats roughly every 20 ms, with the pulse width (about 1 ms to 2 ms) determining the angle. You can generate that pulse using a hardware PWM peripheral or by a small software routine that toggles a GPIO pin at the right times. Either way, you’re relying on digital output through a GPIO pin to send the servo the control signal.

Analog-to-digital conversion isn’t needed for sending the control signal, I2C pins are for communication, and while a dedicated PWM pin is ideal for clean timing, it ultimately serves as a GPIO that can produce the PWM signal.

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