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while True:

led.value = True

time.sleep(0.1)

led.value = False

time.sleep(0.1)

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.tx

t, code.py, main.txt and main.py. CircuitPython looks for those files, in that order, and

then runs the first one it finds. While code.py is the recommended name for 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.

Exploring Your First CircuitPython Program

First, you'll take a look at the code you're editing.

Here is the original code again:

import board

import digitalio

import time

led = digitalio.DigitalInOut(board.LED)

led.direction = digitalio.Direction.OUTPUT

while True:

led.value = True

time.sleep(0.5)

led.value = False

time.sleep(0.5)

Adafruit ESP32-S3 User Manual

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