Arduino sensors

What is the primary difference between a sensor and a detector?

• A sensor processes data, while a detector collects it.

• A sensor collects data, while a detector processes it to find a conclusion.

• Sensors are always digital, detectors are always analog.

• Detectors are physical devices, sensors are software programs.

How does a Passive Infrared Radiation (PIR) sensor detect movement?

• By emitting sound waves and measuring the echo.

• By detecting changes in visible light intensity.

• By sensing changes in infrared radiation emitted by bodies.

• By measuring magnetic field fluctuations.

What communication protocol does the laser-based distance sensor (VL53L0X chip) use?

• SPI

• UART

• I2C

• Analog

What can the IMU module sense?

• Temperature and humidity

• Gyro forces and accelerations

• Light intensity and color

• Magnetic fields and pressure

What types of gases can a gas sensor detect?

• Flammable gases, air quality, or alcohol.

• Only flammable gases.

• Only alcohol in exhaled air.

• Only changes in normal air percentage.