Makerspace

Remember Blinky?

The very first project from the Makecode Robotics course caused a single LED to cycle back and forth between on and off.

Recall it used a single while loop containing 4 blocks:

1. set the LED to on
2. sleep for half a second
3. set the LED to off
4. sleep for half a second

Now we do the same thing, just using 4 lines of Python code instead of 4 Makecode blocks:

# This section lets the system know which libraries we want to use
from adafruit_circuitplayground import cp
import time

# This section is where our main code goes
# Everything indented under the 'while True' will repeat forever
# We call this a 'while loop'
while True:
    cp.red_led = True
    time.sleep(0.5)
    cp.red_led = False
    time.sleep(0.5)

# Note - anything with a '#' infront is a comment and is ignored

Challenge Problem

Can you do the same thing using only 2 lines of Python code within the while loop?

References

• cp.red_led

• Python: while loops

• Python: time.sleep