We use IoT Central a lot for demonstration purposes. It provides an IoT Dashboard for your IoT devices on a SaaS level. It brings speed into the projects and we can have good discussions about usability with customers.
Recently, I had to add some buttons in IoT Central to manipulate an IoT Edge device. At this moment, IoT Central is not supporting IoT Edge devices but it can be done with a simple trick. So displaying information is not that hard. But sending module twin changes back to the IoT edge is not simply done.
In this blog, I show how to program IoT Edge module twin updates using c#. I use Azure Functions to make this code reachable from other sources like IoT Central.