Recall & Review
beginner
What is the basic hardware needed to control a single LED with a Raspberry Pi?
You need a Raspberry Pi, an LED, a resistor (usually 220Ω), and connecting wires. The resistor protects the LED from too much current.
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beginner
Which Raspberry Pi pin type is used to control an LED?
A GPIO (General Purpose Input/Output) pin is used to control an LED by turning it on or off.
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beginner
What Python library is commonly used to control GPIO pins on a Raspberry Pi?
The RPi.GPIO library is commonly used to control GPIO pins in Python on a Raspberry Pi.
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beginner
How do you turn an LED on using Python and RPi.GPIO?
Set the GPIO pin connected to the LED as output, then set it to HIGH to turn the LED on.
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beginner
Why do we need a resistor when connecting an LED to a Raspberry Pi?
The resistor limits the current flowing through the LED to prevent it from burning out or damaging the Raspberry Pi.
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Which pin mode should you set for an LED control pin on Raspberry Pi?
✗ Incorrect
You set the pin as GPIO.OUT to send signals to the LED.
What does setting a GPIO pin to HIGH do to an LED connected to it?
✗ Incorrect
Setting the pin HIGH sends voltage to the LED, turning it on.
Why is a resistor used with an LED on a Raspberry Pi?
✗ Incorrect
The resistor limits current to prevent damage.
Which Python command imports the GPIO library for Raspberry Pi?
✗ Incorrect
The standard library is imported with 'import RPi.GPIO as GPIO'.
What is the first step before controlling a GPIO pin in Python?
✗ Incorrect
You must set the GPIO mode to define pin numbering before use.
Explain the steps to turn on a single LED using a Raspberry Pi and Python.
Think about hardware setup and Python code steps.
You got /5 concepts.
Why is it important to use a resistor when connecting an LED to a Raspberry Pi GPIO pin?
Consider what happens if too much current flows.
You got /4 concepts.