How to Read the Battery Level of Bluetooth LE Devices

Microsoft Surface Dial

At the Microsoft Build Tour in Vienna, I had the opportunity to present an enhanced version of the Bluetooth Beacon talk. With the Windows 10 Creators Update, Microsoft released a massive update to the Bluetooth LE capabilities of the OS. This finally allows developers to use the full potential of modern Bluetooth scenarios, including sensors, wearables and beacons.

At Build 2017, Microsoft released three new sessions explaining the capabilities of the new APIs:

  1. Intro to Bluetooth LE Explorer
  2. Unpaired Bluetooth LE Device Connectivity
  3. Bluetooth GATT Server

Even though the sessions reference example code and blog posts that should have been released together with the session recordings, still none of that is available so far. That gave me the opportunity to explore the new APIs based on the short documentation overview page and the videos. Continue reading “How to Read the Battery Level of Bluetooth LE Devices”

More Realistic HoloLens Spectator View Photos

HoloLens Spectator View - Photoshop - Screen - Darkened

When capturing a Mixed Reality scene through HoloLens Spectator View, the resulting photos and videos look amazing. But how to make them more realistic? The right blending mode in Photoshop helps.

Are Spectator View Photos Real?

Of course, the captured Spectator View photo is in many ways different to what you see in HoloLens. First off, it’s only 2D; in the HoloLens, you’d see a real 3D hologram. In this area, the live HoloLens view is much more impressive.

On the other hand, the actual resolution and field of view of the HoloLens is less than a (potentially) 20 Megapixel+ Unity rendering that shows holograms all around you. But the field of view is difficult and somehow unnecessary to simulate as we’re looking on the scene from a 3rd person perspective. Continue reading “More Realistic HoloLens Spectator View Photos”