I wanted to learn more about the Meraki Location API, use it as an opportunity to also learn C#, and use C# to visualize the location data using openGL. This was nights and weekends for the last few months, but time well spent.
While the "WiFi Radar" visualization stuff isn't very useful, this really got my mind thinking about other possibilities both with the Meraki API and some others.
There is a short video covering the highlights here:
Hope you enjoy!