Arduino Sensors and Actuators

What is the function of a temperature sensor in Arduino?

• It measures the temperature

• It controls the speed of a motor

• It measures humidity

• It plays music

Explain the working principle of a proximity sensor in Arduino.

• Proximity sensors in Arduino work by analyzing the color of the object in front of it

• Proximity sensors in Arduino work by emitting sound waves and measuring the echo

• Proximity sensors in Arduino work by detecting changes in temperature

• Proximity sensors in Arduino work by emitting an electromagnetic field or a beam of electromagnetic radiation and then look for changes in the field or return signal.

How does a servo motor differ from a DC motor in Arduino?

• Servo motor allows for precise control of angular position, while DC motor provides continuous rotation.

• Servo motor and DC motor both provide continuous rotation and precise control of angular position.

• Servo motor allows for continuous rotation, while DC motor provides precise control of angular position.

• Servo motor and DC motor are the same and can be used interchangeably in Arduino.

Describe the role of a motion sensor in Arduino-based applications.

• It detects movement or changes in the environment and triggers a response or action.

• It measures the temperature of the environment

• It plays music when activated

• It changes the color of the LED lights

How does a potentiometer work as an input device in Arduino?

• It generates random values that are interpreted by the Arduino

• It emits infrared signals to communicate with the Arduino

• It changes its resistance based on the position of its knob or slider, which is then read by the Arduino analog input pins.

• It uses a magnetic field to send data to the Arduino

Explain the concept of pulse-width modulation (PWM) in relation to Arduino actuators.

• PWM is a communication protocol used to send data between Arduino actuators and sensors

• PWM is a type of sensor that detects motion in Arduino actuators

• PWM is used to control the temperature of Arduino actuators by adjusting the voltage

• PWM allows Arduino to control the speed of motors or the brightness of LEDs by varying the duty cycle of the digital signal.

What is the significance of using a relay module with Arduino?

• It allows the control of high voltage devices using low voltage signals from the Arduino.

• It helps in reducing the power consumption of the Arduino.

• It has no significance in the functioning of Arduino.

• It allows the control of low voltage devices using high voltage signals from the Arduino.

Discuss the importance of using a motor driver with Arduino motors.

• It makes the motors run slower and less efficiently.

• It is not necessary to use a motor driver with Arduino motors.

• It provides the necessary power and control to drive the motors efficiently and safely.

• Using a motor driver with Arduino motors can cause damage to the motors.