Raspberry Pi vs Arduino comparison - Practice Questions

Challenge - 5 Problems

🧠 Conceptual

intermediate

Main difference in processing power

Which statement best describes the main difference in processing power between Raspberry Pi and Arduino?

A Raspberry Pi has a full operating system and a powerful CPU, while Arduino uses a simple microcontroller with limited processing power.

B Arduino has a full operating system and a powerful CPU, while Raspberry Pi uses a simple microcontroller with limited processing power.

C Both Raspberry Pi and Arduino have similar processing power and run full operating systems.

D Raspberry Pi and Arduino both use microcontrollers with no operating system.

💡 Hint

Think about which device can run Linux and which cannot.

Raspberry Pi runs a full operating system like Linux and has a powerful CPU. Arduino uses a microcontroller without an OS and has limited processing power.

❓ Predict Output

intermediate

GPIO pin control difference

What will be the output of this code snippet on Raspberry Pi and Arduino respectively?

Raspberry Pi

Raspberry Pi (Python):
import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BCM)
GPIO.setup(18, GPIO.OUT)
GPIO.output(18, GPIO.HIGH)
print('Pin 18 set HIGH')

Arduino (C++):
void setup() {
  pinMode(13, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  digitalWrite(13, HIGH);
  Serial.println("Pin 13 set HIGH");
  delay(1000);
}

A Raspberry Pi prints 'Pin 18 set HIGH' and Arduino prints 'Pin 13 set HIGH'.

B Raspberry Pi prints nothing and Arduino prints 'Pin 13 set HIGH'.

C Raspberry Pi prints 'Pin 13 set HIGH' and Arduino prints 'Pin 18 set HIGH'.

D Both Raspberry Pi and Arduino print nothing.

💡 Hint

Look at the print statements and pin numbers in each code.

The Raspberry Pi code prints 'Pin 18 set HIGH' after setting GPIO pin 18 high. The Arduino code prints 'Pin 13 set HIGH' after setting pin 13 high.

🔧 Debug

advanced

Identify error in Arduino code

What error will this Arduino code produce when compiled?

Raspberry Pi

void setup() {
  pinMode(13, OUTPUT)
  digitalWrite(13, HIGH);
}

void loop() {
}

A RuntimeError: digitalWrite called before pinMode.

B SyntaxError: Missing semicolon after pinMode line.

C No error, code compiles and runs correctly.

D SyntaxError: Missing curly braces in setup function.

💡 Hint

Check punctuation at the end of each statement.

The line 'pinMode(13, OUTPUT)' is missing a semicolon at the end, causing a syntax error.

📝 Syntax

advanced

Correct Python syntax for Raspberry Pi GPIO setup

Which option shows the correct Python syntax to set GPIO pin 17 as an output on Raspberry Pi?

A GPIO.output(17, GPIO.OUT)

B GPIO.setup(17, OUTPUT)

C GPIO.setup(17, GPIO.OUT)

D GPIO.setmode(17, GPIO.OUT)

💡 Hint

Remember the function to configure pin mode is 'setup'.

The correct function to set a pin as output is 'GPIO.setup(pin_number, GPIO.OUT)'.

🚀 Application

expert

Choosing device for a real-time sensor project

You want to build a project that reads sensor data every millisecond and controls motors with precise timing. Which device is better suited and why?

A Arduino, because it can run a full operating system for better control.

B Raspberry Pi, because it runs Linux and can multitask easily.

C Raspberry Pi, because it has more processing power for sensor reading.

D Arduino, because it has real-time capabilities and low latency for precise timing.

💡 Hint

Consider which device handles real-time tasks better.

Arduino is better for real-time tasks with precise timing because it runs bare-metal code without an OS, minimizing delays.