Arduino Basics

What programming language is primarily used to write Arduino code?

• Python

• C++

• Java

• Ruby

What is the function used to start the main loop in an Arduino sketch?

• setup()

• start()

• initialize()

• loop()

Which function is used to set up initial settings in an Arduino sketch?

• initialize()

• config()

• setup()

• begin()

How do you declare a digital pin as an output in Arduino code?

• pinMode(pin, INPUT);

• pinMode(pin, OUTPUT);

• setPinMode(pin, HIGH);

• pinDirection(pin, OUT);

What is the purpose of analogWrite() in Arduino?

• Read analog signals

• Generate a PWM signal

• Configure analog pins

• Toggle a digital pin

Which Arduino function turns an LED on or off?

• digitalRead()

• analogWrite()

• digitalWrite()

• setLED()

How do you read the distance using an HC-SR04 ultrasonic sensor in Arduino?

• Use the pulseIn() function

• Use the digitalRead() function

• Use analogRead()

• Use the echoRead() function

What pins on the HC-SR04 sensor are used to send and receive signals?

• VCC and GND

• Trigger and Echo

• RX and TX

• Data and Ground

What Arduino function pauses the program for a specific time?

• wait()

• delay()

• pause()

• timer()

What is the default baud rate for serial communication in Arduino?

• 2400

• 4800

• 9600

• 19200