7th serial Monitor controlled LED

1. What is the purpose of the Serial Monitor in an Arduino project?

• • To store the uploaded code

• • To provide power to the Arduino board

• • To allow communication between the Arduino board and a connected computer

• To allow the Arduino board to control external devices
  

2. Which function is used to initialize serial communication in Arduino?

• Serial.beginTransmission()
  

• • Serial.print()

• • Serial.begin()

• • Serial.write()

3. In an Arduino sketch, which pin is commonly used to connect an LED for testing purposes?

• • Pin 9

• Pin 7
  

• • Pin 5

• • Pin 13

5. How do you turn on an LED connected to pin 13 of the Arduino?

• • digitalWrite(13, HIGH);

• • analogWrite(13, 255);

• • digitalWrite(13, LOW);

• analogWrite(13, 0);
  

6. What value should be Input into the Serial Monitor to turn an LED off?

• High

• 0

• 1
  

• Low

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

• • 115200

• 38400
  

• 9600

• 19200

9. What is the role of Serial.available() in an Arduino program?

• It reads a specific byte from the Serial Monitor
  

• • It checks how many bytes are available to read from the serial buffer

• • It sends data to the Serial Monitor

• • It initializes serial communication

10. How can you toggle an LED on and off with Serial Monitor input?

• • Use analogWrite() to adjust brightness

• Use delay() to control the LED state
  

• • Use Serial.begin() for controlling timing

• • Use an if statement to check for specific data received via Serial Monitor

14. To make the LED blink every second when connected to an Arduino, which code will work?

• • digitalWrite(13, HIGH); delay(500); digitalWrite(13, LOW); delay(500);

• • digitalWrite(13, HIGH); delay(1000); digitalWrite(13, LOW); delay(1000);

• digitalWrite(13, LOW); delay(1000); digitalWrite(13, HIGH); delay(1000);
  

• • analogWrite(13, 255); delay(1000); analogWrite(13, 0); delay(1000);

If you enter "1" in the Serial Monitor and the Arduino is programmed to turn on the LED when "1" is received, which line of code is required?

• if (Serial.print() == '1') { digitalWrite(13, HIGH); }
  

• • if (Serial.read() == '1') { digitalWrite(13, HIGH); }

• • if (Serial.available() == '1') { digitalWrite(13, HIGH); }

• • if (Serial.read() == 1) { digitalWrite(13, LOW); }