Add a status LED to your Raspberry Pi

In this tutorial, I’ll show you how to add an LED to your Raspberry Pi so that you can show the status of an external system or API. The board we’ll use only costs a few dollars and has 8 programmable RGB LEDs making it a versatile and economic option.

Above: My IoT demo for Dockercon 2016 showing a temperature sensor status — green for within range and red for an alert.