Simple hello world app

Going through documentation, I can not figure out how to create a basic Hello World app using the Open API.

Is there an example where I can see how to set a single panel to a random color (Javascript / Python / Ruby / c#)?

The built in api is restful, so you don't actually have to use a programming language (javascript/python/etc) to take advantage of its features. The nanoleaf postman documentation here covers getting started much better than I can. You can use postman to easily test out features of the api.

That said, you can also use a third-party api wrapper to access the api using the programming languages you mentioned. The best wrappers (in my opinion) for their corresponding languages are listed below (click on the links).

• Javascript
• Python
• Ruby
• C#
• Java

Most of these projects have examples and documentation in their readmes to help you get started.

To answer the rest of your question, setting the color of a single panel is slightly more complicated then it might seem at first (depending on which of the above links you choose to use). There isn't a "set panel color" command in the api so you have to create a static effect that only updates one panel, then display that on the aurora using the "write" command. Here's a simple way to set the color of a panel in java. Here's a more complicated way to set the color of a panel in java.