Motion Sensors with Arduino

False (B)

It controls the duration for which the output signal remains HIGH after motion detection.

<p>HIGH</p> Signup and view all the answers

<p>PIR Sensor = Detects changes in infrared radiation Ultrasonic Sensor = Measures distance using sound waves Accelerometer = Detects changes in acceleration Microwave Sensor = Detects with microwave pulses</p> Signup and view all the answers

<p>The range of motion detection (D)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Security systems and smart lighting.</p> Signup and view all the answers

<p>radiate</p> Signup and view all the answers

<p>Microwave emitter (C)</p> Signup and view all the answers

<p>Single Trigger Mode and Repeatable Trigger Mode (B)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>one-time activation for each motion event, like a single alarm sound</p> Signup and view all the answers

<p>continuously</p> Signup and view all the answers

<p>Motion-activated light (D)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>It initializes serial communication at a baud rate of 9600.</p> Signup and view all the answers

<p>HIGH</p> Signup and view all the answers

<p>Single Trigger Mode = Output triggered once per motion event Repeatable Trigger Mode = Output continuously retriggered while motion occurs</p> Signup and view all the answers

<p>Buzzer (C)</p> Signup and view all the answers

Devices that detect movement in a space by sensing changes in infrared radiation, sound waves, acceleration, or microwave patterns.

A commonly used motion sensor type that detects changes in infrared radiation emitted by objects. It works by sensing heat.

A potentiometer on a PIR sensor that adjusts the amount of time the sensor stays active after detecting motion.

Rotating the potentiometer clockwise on a PIR sensor increases the time delay, making the sensor stay active for longer. Rotating it counterclockwise decreases the time delay.

A potentiometer on a PIR sensor that adjusts the range or sensitivity of motion detection.

Rotating the potentiometer clockwise on a PIR sensor increases the sensitivity, allowing it to detect motion from a farther distance. Rotating it counterclockwise decreases the sensitivity.

The output pin on a PIR sensor goes HIGH when motion is detected, indicating that movement has been sensed.

The output pin on a PIR sensor remains LOW when there is no detected motion.

A component of a PIR sensor that detects changes in infrared radiation levels.

A Fresnel lens is a type of lens used in PIR sensors to focus infrared radiation onto the pyroelectric sensor, improving detection sensitivity.

This mode triggers the sensor output only once when motion is detected, even if motion continues. It's useful for single-event activations like an alarm.

This mode keeps triggering the sensor output continuously as long as motion is detected. It's ideal for continuous reactions like keeping a light on while movement persists.

A component that detects movement within its field of view, commonly used in security systems and automation.

The physical pin on the microcontroller where the PIR sensor's signal is connected, usually set as an input.

The physical pin on the microcontroller where the light source is connected, usually set as an output.

Setting the type of signal a pin will send or receive, either 'INPUT' for receiving signals or 'OUTPUT' for sending signals.

Reading the state of a digital input pin, returning HIGH if motion is detected and LOW if no motion is present.

Turning the LED connected to a specific pin ON (HIGH) by sending a signal, illuminating the light.

Turning the LED connected to a specific pin OFF (LOW) by stopping the signal, extinguishing the light.

A delay in the program's execution, allowing the sensor to stabilize or create a pause between actions.