The first thing you will need to do is to login to Adafruit IO and visit the Settings page.
Click the VIEW AIO KEY button to retrieve your key.
A window will pop up with your Adafruit IO. Keep a copy of this in a safe place. We'll need it later.
Next, you will need to create a feed called Digital. If you need help getting started with creating feeds on Adafruit IO, check out the Adafruit IO Feed Basics guide.
Next, add a new Gauge block to a new or existing dashboard. Name the block whatever you would like, and give it a max value of 1 and a min value of 0. Make sure you have selected the Digital feed as the data source for the gauge.
If you need help getting started with Dashboards on Adafruit IO, check out the Adafruit IO Dashboard Basics guide.
When you are finished editing the form, click Create Block to add the new block to the dashboard.
Next, we will look at wiring the circuit.