User Manual

More Changes

We don't have to stop there! Let's keep going. Change the second 0.5 to 0.1 so it looks like this:

Now it blinks really fast! You decreased the both time that the code leaves the LED on and off!

Now try increasing both of the 0.1 to 1 . Your LED will blink much more slowly because you've increased the amount

of time that the LED is turned on and off.

Well done! You're doing great! You're ready to start into new examples and edit them to see what happens! These

were simple changes, but major changes are done using the same process. Make your desired change, save it, and

get the results. That's really all there is to it!

Naming Your Program File

CircuitPython looks for a code file on the board to run. There are four options: code.txt, code.py, main.txt and main.py.

CircuitPython looks for those files, in that order, and then runs the first one it finds. While we suggest using code.py as

your code file, it is important to know that the other options exist. If your program doesn't seem to be updating as you

work, make sure you haven't created another code file that's being read instead of the one you're working on.

while True:

led.value = True

time.sleep(0.1)

led.value = False

time.sleep(0.1)