Arduino Sensor Functionality and Applications

The video tutorial introduces various Arduino sensors, explaining their functions and applications. It covers serial communication for data transfer, and provides detailed insights into specific sensors like light, ultrasonic, temperature, moisture, water level, sound, and gas sensors. Each sensor's working principle, coding, and project applications are discussed, highlighting Arduino's versatility in collecting and processing environmental data.

What is the primary function of a sensor in an Arduino project?

• To store data for future use

• To convert physical quantities into electrical signals

• To convert electrical signals into physical quantities

• To provide power to the Arduino board

How does Arduino communicate data from sensors to a computer?

• Through wireless communication

• Using serial communication

• Via Bluetooth

• Through infrared signals

What happens when you add a delay command in the Arduino loop?

• The program runs faster

• The program stops executing

• The output is displayed more slowly

• The output is displayed more quickly

Which sensor is used to measure light intensity in Arduino projects?

• Light sensor

• Temperature sensor

• Gas sensor

• Ultrasonic sensor

How does an ultrasonic sensor measure distance?

• By sensing moisture levels

• By using sound waves

• By detecting temperature changes

• By measuring light intensity

What is the role of the LM35 sensor in Arduino projects?

• To sense temperature

• To measure gas concentration

• To detect sound levels

• To measure light intensity

In an automatic plant watering system, what triggers the water pump to turn on?

• Low moisture levels

• High temperature levels

• High light intensity

• Low sound levels

What does a water level sensor detect in an Arduino project?

• Sound intensity

• Water leakage or level

• Temperature changes

• Gas concentration

How does a sound sensor in Arduino projects detect sound?

• By using a capacitance microphone

• By sensing temperature changes

• By measuring light intensity

• By detecting gas concentration

Which gases can the MQ2 gas sensor detect?

• Water vapor and ozone

• Oxygen and nitrogen

• Carbon dioxide and helium

• Butane, propane, and methane