![]() ![]() If you click on the individual feeds, you will be provided additional information and settings specific to that feed. The keys of potentiometer and red-led are shown for the feeds we just created. The Key column in the Feeds listing displays the identifiers that we will use in our program. ![]() Then create a Red LED feed in the same fashion. In the Create a new Feed window that pops up, enter Potentiometer in the Name field along with an optional Description, such as Potentiometer value. Click the New Feed button to create a new feed. In our case, we need two feeds, one for a potentiometer and one for an LED.Ĭlick Feeds within the toolbar at the top of the Adafruit IO site and then select view all from the pop-down window that appears. They are unique to each individual source of data you send to the system. Feeds hold the metadata and values associated with a particular component or sensor. Once your account is created, head over to the Adafruit IO site and sign in if you haven’t already. Please note that the Adafruit IO service does not require a separate account. If you don’t already have an Adafruit account, go to their website and sign up for one now. But before we do that, we need to configure our intentions on Adafruit IO. This project will connect an LED and a potentiometer to an Arduino that we will then associate with the Adafruit IO service for access and control. If you need assistance with your particular setup, post a question in the comments section below and I, or someone else, can try to help you. If you are using a different Arduino board or computer setup, the vast majority of this tutorial should still apply, however, some minor changes may be necessary. My development system consists of the Arduino Uno WiFi Rev2 development board connected to a macOS based computer running the desktop Arduino IDE. There is even a general category listing that contains all kinds of Adafruit IO based projects. ![]() Please see the Internet of Things for Everyone and Adafruit IO Basics learning guides for additional information on using the Adafruit IO service. Upgrades are available, but the free tier gives us a lot to work with and may be all that you will ever need. Adafruit IO is free, secure, compatible across many development boards, and allows your device to be accessed privately or shared with others if you so choose. This tutorial will instead utilize Adafruit’s Adafruit IO service to connect an Arduino to the outside world. ![]() For these reasons, they are not usually the best fit for hobbyists to access their Arduino devices over the internet. Although doable, these techniques can be complicated, costly, or not very secure. In order to extend this approach and allow your Arduino based server to be accessed over the internet, techniques such as port forwarding, external hosting, static IP addressing, or use of a Dynamic DNS service are required. This worked well for accessing your Arduino over a local network, but it was not visible over the internet. In a previous article, Controlling An Arduino Uno WiFi Rev2 Or Arduino Uno With WiFi Shield From A Web Browser, I described how to create and run a web server on your Arduino Uno. 330 Ω Resistor (available on SparkFun and Amazon).10 KΩ Linear Potentiometer (available on Adafruit and Sparkfun).Standard 5mm Red LED (available on Adafruit and SparkFun).4 x Male-Male Jumper Wires (available on Adafruit and Arrow).Preformed Breadboard Jumper Wire Kit (available on SparkFun and CanaKit).Solderless Breadboard (available on Adafruit and SparkFun).Arduino Uno WiFi Rev2 (available on Arduino and SparkFun) With Compatible USB Cable.Linux, macOS, Or Windows Based Computer With A USB Port.The resources created for this tutorial are available on GitHub for your reference. The Core Electronics’ How to Use Breadboards, Science Buddies’ How to Use a Breadboard, and SparkFun’s How to Read a Schematic guides are good resources for learning how to translate a schematic to a breadboard. In addition, this tutorial will use a solderless breadboard to build a simple circuit from a schematic diagram. If you are new to Arduino or would just like to refresh your knowledge, please see our Blink: Making An LED Blink On An Arduino Uno tutorial before proceeding with this one. A basic understanding of electronics and programming is expected along with some familiarity with the Arduino platform. This tutorial will teach you how to use the Adafruit IO service to connect your Arduino Uno WiFi Rev2 to the outside world. Skill Level: Intermediate Table Of Contents ![]()
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