Exploring Arduino Basics

What does PIR stand for in Arduino projects?

• Photo Infrared Resistor

• Passive Infrared Sensor

• Programmable Infrared Relay

• Passive Infrared Receiver

How does a PIR sensor detect motion?

• A PIR sensor detects motion by analyzing changes in air pressure around it.

• A PIR sensor detects motion by sensing changes in infrared radiation caused by moving warm bodies.

• A PIR sensor detects motion by emitting visible light and sensing reflections.

• A PIR sensor detects motion by measuring sound waves from moving objects.

What is the function of a piezo buzzer in an Arduino circuit?

• To measure temperature in the circuit.

• To act as a light sensor.

• To provide power to the Arduino board.

• The function of a piezo buzzer in an Arduino circuit is to produce sound signals.

How can you connect a push button to an Arduino?

• Connect one terminal of the push button to power and the other to a digital pin.

• Connect both terminals of the push button to a digital pin.

• Connect the push button directly to the analog pins without any resistors.

• Connect one terminal of the push button to a digital pin and the other to ground.

What is the purpose of using a humidity sensor with Arduino?

• To measure and monitor moisture levels in the air for various applications.

• To detect light levels in the environment.

• To measure sound levels in the air.

• To control the temperature in a room.

How do you read values from a humidity sensor in Arduino?

• Read values only once during setup.

• Use the appropriate library, initialize the sensor, and call the read method in the loop.

• Connect the sensor directly to the power supply.

• Use a random number generator to simulate readings.

What type of signal does a push button send to the Arduino when pressed?

• A HIGH signal (5V) when pressed.

• An analog signal varying between 0V and 5V.

• A LOW signal (0V) when pressed.

• No signal is sent when pressed.

Can a piezo buzzer produce different tones? If so, how?

• No, a piezo buzzer can only produce a single tone.

• Yes, but it can only produce tones in a specific range.

• No, piezo buzzers do not produce sound at all.

• Yes, a piezo buzzer can produce different tones by varying the frequency of the input signal.

What programming language is primarily used for Arduino?

• C/C++

• Python

• JavaScript

• Java

What is the significance of using resistors with buttons in Arduino circuits?

• Resistors are only necessary for LED circuits, not buttons.

• Resistors amplify the button signals in Arduino circuits.

• Resistors prevent short circuits and stabilize button signals in Arduino circuits.

• Resistors are used to increase the power supply voltage.