Servo angle positioning in Arduino - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a servo motor in Arduino projects?

A servo motor is a small device that can move to a specific angle when told by the Arduino. It is used to control precise movements like turning a wheel or moving a robot arm.

beginner

How do you include the Servo library in an Arduino sketch?

You include the Servo library by writing #include <Servo.h> at the top of your Arduino code. This lets you use servo functions easily.

beginner

What function moves the servo to a specific angle?

The function servo.write(angle); moves the servo to the angle you specify, where angle is between 0 and 180 degrees.

beginner

Why do you need to attach a servo to a pin in Arduino?

You attach a servo to a pin using servo.attach(pinNumber); so the Arduino knows which pin controls the servo motor.

beginner

What is the typical angle range for a standard servo motor?

Most standard servo motors move between 0 and 180 degrees. This means you can tell the servo to point anywhere in that range.

Which Arduino library is used to control servo motors?

A SPI

B Wire

C EEPROM

D Servo

The Servo library is specifically designed to control servo motors in Arduino.

What does servo.write(90); do?

A Moves the servo to 90 degrees

B Moves the servo to 0 degrees

C Stops the servo

D Moves the servo to 180 degrees

The write function moves the servo to the angle given, here 90 degrees.

Before moving a servo, what must you do in your code?

A Set pinMode to OUTPUT

B Attach the servo to a pin

C Start Serial communication

D Declare a variable

You must attach the servo to a pin using servo.attach(pinNumber); before controlling it.

What is the valid angle range for most servo motors?

A 0 to 90 degrees

B 0 to 360 degrees

C 0 to 180 degrees

D -90 to 90 degrees

Standard servos usually move between 0 and 180 degrees.

Which pin type should you connect a servo signal wire to on Arduino?

A Digital PWM pin

B Analog input pin

C Power pin

D Ground pin

Servo signal wires connect to digital PWM pins to receive control signals.

Explain how to control a servo motor angle using Arduino code.

Think about the steps from setup to moving the servo.

What are the typical angle limits of a servo motor and why is it important to stay within them?

Consider what happens if you try to move beyond the servo's range.