LED control patterns in Embedded C - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to turn on the LED connected to pin 13.

Embedded C

digitalWrite([1], HIGH);

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A13

B12

C10

D9

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong pin number.

Confusing HIGH and LOW values.

The LED is connected to pin 13, so we use digitalWrite(13, HIGH); to turn it on.

2fill in blank

medium

Complete the code to make the LED blink by turning it off.

Embedded C

digitalWrite(13, [1]);

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AHIGH

BLOW

CON

DOFF

Attempts:

3 left

💡 Hint

Common Mistakes

Using HIGH instead of LOW to turn off the LED.

Using undefined constants like ON or OFF.

To turn the LED off, we use LOW with digitalWrite.

3fill in blank

hard

Fix the error in the code to set pin 13 as output.

Embedded C

pinMode([1], OUTPUT);

Drag options to blanks, or click blank then click option'

A13

B11

C12

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Setting the wrong pin as output.

Confusing input and output modes.

Pin 13 is the correct pin connected to the LED and must be set as output.

4fill in blank

hard

Fill both blanks to create a pattern that turns the LED on and off with a delay.

Embedded C

digitalWrite(13, [1]);
delay([2]);

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AHIGH

BLOW

C1000

D500

Attempts:

3 left

💡 Hint

Common Mistakes

Using LOW to turn the LED on.

Using too short or too long delay values.

Use HIGH to turn the LED on and 1000 milliseconds delay for 1 second.

5fill in blank

hard

Fill all three blanks to complete the loop that blinks the LED on and off with delays.

Embedded C

void loop() {
  digitalWrite(13, [1]);
  delay([2]);
  digitalWrite(13, [3]);
  delay([4]);
}

Drag options to blanks, or click blank then click option'

AHIGH

B500

CLOW

D1000

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping HIGH and LOW values.

Forgetting the delay between states.

The LED is turned on with HIGH, then delayed 500 ms, then turned off with LOW, then delayed 500 ms again.