Before we run the script, we'll need to change ADAFRUIT_IO_USERNAME and ADAFRUIT_IO_KEY to the username and key for your Adafruit IO account.
- If you need the AIO Key, navigate to your Adafruit IO Profile
# Set to your Adafruit IO key. # Remember, your key is a secret, # so make sure not to publish it when you publish this code! ADAFRUIT_IO_KEY = 'YOUR_AIO_KEY' # Set to your Adafruit IO username. # (go to https://accounts.adafruit.com to find your username) ADAFRUIT_IO_USERNAME = 'YOUR_AIO_USERNAME'
Next, we'll create an instance of the Adafruit IO Client and set up the feed we created earlier.
aio = Client(ADAFRUIT_IO_USERNAME, ADAFRUIT_IO_KEY)
digital = aio.feeds('digital')
The next chunk of code sets up the LED to digital pin 5 (board.D5) and sets the direction of the LED to an output.
# led set up led = digitalio.DigitalInOut(board.D5) led.direction = digitalio.Direction.OUTPUT
To set up the led, assign it to digital pin 5:
led = digitalio.DigitalInOut(board.D5)
We want the LED to light up. To do this, its pin needs to be set to an output:
led.direction = Direction.OUTPUT
Inside the while True loop,. the code retrieves the the current value of the feed and sets the LED to the value.
while True:
data = aio.receive(digital.key)
if int(data.value) == 1:
print('received <- ON\n')
elif int(data.value) == 0:
print('received <- OFF\n')
# set the LED to the feed value
led.value = int(data.value)
# timeout so we dont flood adafruit-io with requests
time.sleep(0.5)
Make sure you're within the /io-client-python/examples/basics directory.
If you're not sure which directory you're in, you can check this by running pwd and you should see the following output from your terminal:
~/io-client-python/examples/basics
Let's run the script. In your terminal, run:
python3 digital_in.py
Toggle the button on your Adafruit IO dashboard, and you should see the following in the the terminal of your Pi.
You can now toggle the button on your Adafruit IO dashboard, and you should see your LED turn on and off.
"""
'digital_out.py'
===================================
Example of turning on and off a LED
from the Adafruit IO Python Client
Author(s): Brent Rubell, Todd Treece
"""
# Import standard python modules
import time
# import Adafruit Blinka
import digitalio
import board
# import Adafruit IO REST client.
from Adafruit_IO import Client, Feed, RequestError
# Set to your Adafruit IO key.
# Remember, your key is a secret,
# so make sure not to publish it when you publish this code!
ADAFRUIT_IO_KEY = 'YOUR_AIO_KEY'
# Set to your Adafruit IO username.
# (go to https://accounts.adafruit.com to find your username)
ADAFRUIT_IO_USERNAME = 'YOUR_AIO_USERNAME'
# Create an instance of the REST client.
aio = Client(ADAFRUIT_IO_USERNAME, ADAFRUIT_IO_KEY)
try: # if we have a 'digital' feed
digital = aio.feeds('digital')
except RequestError: # create a digital feed
feed = Feed(name="digital")
digital = aio.create_feed(feed)
# led set up
led = digitalio.DigitalInOut(board.D5)
led.direction = digitalio.Direction.OUTPUT
while True:
try:
data = aio.receive(digital.key)
except RequestError as re:
pass # feed with no data will return 404
if int(data.value) == 1:
print('received <- ON\n')
elif int(data.value) == 0:
print('received <- OFF\n')
# set the LED to the feed value
led.value = int(data.value)
# timeout so we dont flood adafruit-io with requests
time.sleep(0.5)
Page last edited January 22, 2025
Text editor powered by tinymce.
