Intelligrill®, Powered by Feather.

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Intelligrill is a WiFi-enabled remote grill, smoker, and oven thermometer that provides real-time updates on when your main course will be ready to serve. By constantly monitoring the change in food temperature over time, Intelligrill gives you a very reasonable estimate of the time remaining until your main course is ready to be moved from the grill, smoker, or oven to your table. You simply specify the temperature you desire, and Intelligrill will keep you informed of the cooking progress and time remaining via its OLED display and through a WiFi-connected web browser of your choice. I designed the first Intelligrill in 2012 using a PIC24FJ64GB002 processor, a Roving Networks WiFi module, an Adafruit 128 by 64 OLED module, and around 20 additional components. It was designed for my wife, who would immediately ask "when will it be ready?" as soon as the main course was placed in the grill, smoker, or oven. Intelligrill kept her updated via an iOS application I wrote, constantly displaying the time remaining until and the time of day that the main course would be table-ready. We've used Intelligrill hundreds of times since it was born with great results, but unfortunately, after years of problem-free iOS upgrades on our iPhone and iPad devices, the App Store announced that the newest release of iOS would break my iOS Intelligrill application, so they removed it from the App Store. Decision time: update the Intelligrill iOS app or find an alternative. While searching for an alternative to iOS, I came across a remarkable little board, the Adafruit Feather Huzzah ESP8266. This board had everything I required for a new Intelligrill: a decent processor, a lithium-ion battery port with charger, WiFi, analog input, and the ability to easily attach an OLED display. So I ordered the Feather Huzzah ESP8266 and an OLED board, gathered some parts, ported the original Intelligrill iOS software into the Arduino IDE, wrote additional software to welcome Intelligrill to its new home, took a crash course in HTML/JavaScript/JSON programming, then wrote the client-side software, designed and 3D printed a case, and finally after a very long week, "Intelligrill Powered by Feather" was born. Intelligrill is programmed in C/C++, HTML, JavaScript, and JSON, which means it will communicate remotely with most any WiFi-enabled device having a web browser. Intelligrill can be used as a simple wired digital thermometer, as a wireless digital thermometer (when using the Intelligrill access point), and as a long-distance wireless digital thermometer (when used with a WiFi router). You will need soldering skills and equipment, wire, and all parts listed in the first step, plus an Arduino IDE with appropriate Adafruit libraries installed, to assemble and program Intelligrill. Please note that Intelligrill is copyrighted and registered by Zumwalt Properties, LLC. However, I've included all Intelligrill source code and the Autodesk Fusion 360 design file, so feel free to modify Intelligrill for your own personal, non-commercial use. Having little to no HTML/JavaScript/JSON experience, I depended heavily on tutorials from w3schools.com (a great resource), ESP8266 data sheets, and wonderful tutorials, data, and examples at Adafruit.com. If you have questions or comments about Intelligrill, please feel free to comment or message and I will do my best to answer them. And as usual, I probably forgot a file or two or who knows what else, so if you have any questions, please don't hesitate to ask as I do make mistakes in plenty. The electronic circuitry was designed using pencil, paper, and a calculator (who knew that still worked?). The software was designed using Arduino IDE version 1.8.5. Note that this is my first experience with HTML, JavaScript, and JSON programming, so please be gentle in the comments. Finally, the case was designed using Autodesk Fusion 360, sliced using Cura 2.7.0, and printed in PLA on an Ultimaker 3 Extended.