Python Code

Code

Before we run the script at the bottom of this page, we'll need to change ADAFRUIT_IO_USERNAME and ADAFRUIT_IO_KEY to the username and key for your Adafruit IO account.

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# 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'

We're going to set up an instance of the feed we created earlier:

digital = aio.create_feed(Feed(name="digital"))

In the while True loop, we're going to check the value of the button and send it to Adafruit IO. A delay (time.sleep()) has been added to avoid timing out by sending too many requests to Adafruit IO.

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while True:
    if not button.value:
        button_current = 1
    else:
        button_current = 0

    print('Button -> ', button_current)
    aio.send(digital.key, button_current)

    # avoid timeout from adafruit io
    time.sleep(1)

Running the Code

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

You can now press the button, and you should see button presses being sent to Adafruit IO:

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Button -> 1
Button -> 0
Button -> 1
Button -> 0

Check your dashboard on Adafruit IO, and you should see the gauge respond to button presses:

Code

"""
'digital_in.py'
==================================
Example of sending button values
to an Adafruit IO feed.

Author(s): Brent Rubell, Todd Treece
"""
# Import standard python modules
import time

# import Adafruit Blinka
import board
import digitalio

# 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)

# button set up
button = digitalio.DigitalInOut(board.D12)
button.direction = digitalio.Direction.INPUT
button.pull = digitalio.Pull.UP
button_current = 0


while True:
    if not button.value:
        button_current = 1
    else:
        button_current = 0

    print('Button -> ', button_current)
    aio.send(digital.key, button_current)

    # avoid timeout from adafruit io
    time.sleep(1)
This guide was first published on Apr 25, 2015. It was last updated on Apr 25, 2015. This page (Python Code) was last updated on Dec 05, 2019.