LowPower library usage in Arduino - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to put the Arduino into sleep mode for 8 seconds using the LowPower library.

Arduino

LowPower.[1]();

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

ApowerDown

Bidle

Cstandby

Dsleep

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'sleep()' which is not a function in the LowPower library.

Using 'idle()' which is a lighter sleep mode.

Using 'standby()' which is not the deepest sleep mode.

The powerDown() function puts the Arduino into the lowest power sleep mode for 8 seconds by default.

2fill in blank

medium

Complete the code to put the Arduino into power down sleep mode for 4 seconds.

Arduino

LowPower.powerDown([1], ADC_OFF, BOD_OFF);

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

ASLEEP_4S

BSLEEP_2S

CSLEEP_8S

DSLEEP_FOREVER

Attempts:

3 left

💡 Hint

Common Mistakes

Using SLEEP_2S which sleeps for 2 seconds.

Using SLEEP_8S which sleeps for 8 seconds.

Using SLEEP_FOREVER which sleeps indefinitely.

The SLEEP_4S constant sets the sleep duration to 4 seconds.

3fill in blank

hard

Fix the error in the code to correctly disable the ADC before sleeping.

Arduino

LowPower.powerDown(SLEEP_8S, [1], BOD_OFF);

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

AADC_ON

BADC_DISABLE

CADC_SLEEP

DADC_OFF

Attempts:

3 left

💡 Hint

Common Mistakes

Using ADC_ON which keeps the ADC enabled.

Using ADC_DISABLE which is not a valid constant.

Using ADC_SLEEP which does not exist.

The correct constant to disable the ADC is ADC_OFF.

4fill in blank

hard

Fill both blanks to put the Arduino into power down mode for 1 second with ADC and BOD disabled.

Arduino

LowPower.powerDown([1], [2], BOD_OFF);

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

ASLEEP_1S

BADC_OFF

CADC_ON

DSLEEP_8S

Attempts:

3 left

💡 Hint

Common Mistakes

Using ADC_ON which keeps ADC enabled.

Using wrong sleep duration constants.

SLEEP_1S sets the sleep time to 1 second, and ADC_OFF disables the ADC.

5fill in blank

hard

Fill all three blanks to put the Arduino into power down mode for 2 seconds with ADC off and BOD on.

Arduino

LowPower.powerDown([1], [2], [3]);

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

ASLEEP_4S

BADC_OFF

CBOD_ON

DSLEEP_2S

Attempts:

3 left

💡 Hint

Common Mistakes

Using SLEEP_4S instead of 2 seconds.

Turning BOD off when it should be on.

SLEEP_2S sets the sleep duration to 2 seconds, ADC_OFF disables the ADC, and BOD_ON keeps the brown-out detector enabled.