What is the role of an Arduino in the Smart Lamp?

• It powers the LED

• It controls the LED based on light levels

• It produces light

• It works as a battery

What does the pinMode() command do?

• It turns the Arduino ON

• It sets a pin as input or output

• It reads the value of a pin

• It writes a value to a pin

What happens if you forget to write pinMode() in the code?

• The will work properly
  

• The LED will not turn ON/OFF automatically

What does an LED do?

• It detects light

• It produces light

• It stores energy

• It senses temperature

Which leg of the LED is the positive one?

• The shorter leg

• The longer leg

• Both are positive

• LEDs don’t have legs

What does an LDR (Light Dependent Resistor) do?

• It produces light

• It senses light

• It powers the LED

• It controls the Arduino

Why do we use a resistor with the LED?

• To stop the LED from breaking

• To increase the brightness of the LED

• To power the Arduino

• To turn the LED ON and OFF

Which pin do we connect the LDR to on the Arduino?

• Digital pin

• Analog pin

• Power pin

• Ground pin

When the room is dark, what should the Smart Lamp do?

• Turn ON the LED

• Turn OFF the LED

• Blink the LED quickly

• Nothing

What does the Arduino do with the LDR's value?

• Decides if the LED should turn ON or OFF

• Controls the brightness of the LDR

• Reads the LED’s resistance

• Connects the LDR to the battery