Session 14

What is the main function of the Smart Bed Lamp project?

• To measure temperature in a room

• To turn on an LED when there is light

• To light up an LED in the dark and turn it off in bright light

• To play music automatically

What sensor is used in this project to detect light levels?

• Temperature Sensor

• LDR (Light Dependent Resistor)

• Ultrasonic Sensor

• IR Sensor

What happens to the LDR’s resistance in bright light?

• It increases

• It disappears

• It stays the same

• It decreases

Which component acts as the brain of the Smart Bed Lamp?

• Battery

• Jumper Wire

• LED

• Arduino Nano / Kitolit Brain

What pin is used to read the LDR value in the Smart Lamp project?

• D4

• A4

• GND

• D1

What does the microcontroller do when it reads a light level below the threshold (e.g., 500)?

• Turns the LED off

• Resets the board

• Turns the LED on

• Changes the threshold value

What kind of pin is D4 on the Kitolit Brain or Arduino Nano?

• Analog pin

• Ground pin

• Digital pin

• Power pin

What is the role of the analog pin in this project?

• To turn the LED on/off

• To reset the microcontroller

• To read the changing light level from the LDR

• To connect to power

In the block code, what does the “wait 0.5 seconds” block do?

• Keeps the LED always off

• Makes the LDR stop working

• Pauses the program before it checks the light level again

• Blinks the LED continuously

Which of the following is a real-life application of LDR-based automation?

• Fans that rotate automatically

• Streetlights that turn on at night

• Water-level indicators

• Smart vacuum cleaners