The HTC Vive Tracker adds real-world objects to your virtual world. While these real-world objects in virtual environments are now mostly limited to a Nintendo Zapper for a Duck Hunt clone and a tennis racket, the future is clear: we’re going to be playing Duck Hunt and Wii Sports while wearing headsets. The future is so bright, it burns.
Of course, with any piece of neat computing hardware, there’s an opportunity for building an Open Source clone. That’s what [Drix] is doing with his Hackaday Prize entry. He’s created an Open Source Vive Tracker. It’s called the HiveTracker, and it is right now the best solution for tracking objects in a 3D space.
After a few missteps with ultrasonic and magnetic approaches, the team decided to piggyback on the HTC Vive lighthouses. These two base stations scan a laser beam across the room, first vertically, then horizontally. It’s an incredible piece of technology that [Alan Yates] talked about at the 2016 Hackaday Superconference.
While most microcontrollers don’t operate fast enough to see these laser sweeps, the team behind the HiveTracker found one microcontroller, with Bluetooth, and a feature called ‘PPI’. This programmable peripheral interconnect is kinda, sorta like a cross-bar, but designed for more real-time control of applications. With the right software, the team behind the HiveTracker was able to detect the lighthouses and send position and orientation data back to a computer.
This is a stupendous amount of work, and the results are remarkable. You can check out the video below and see that, yes, this is a real, Open Source Vive Tracker.
Continue reading “This Is Your Solution For Open Source Motion Tracking”
It turns out that there were a few challenges to work around and a few new problems to solve, not least of which was mapping VR controllers to control an N64 game in a sensible way. One thing that wasn’t avoidable is that the N64’s rendered world may now pop in 3D, but it still springs forth from a rectangular stage. The N64, after all, is still only rendering a world in a TV-screen-sized portion; anything outside that rectangular window doesn’t really exist, and there’s no way around it as long an emulated N64 is running the show. Still, the result is impressive, and a video demo is embedded below where you can see the effect for yourself.
Continue reading “N64 Emulated in VR Makes Hyrule go 3D”
This video demonstrates a really interesting experiment: sticking a Vive Tracker onto an ordinary chair in order to sync it up perfectly with its VR counterpart. The result? A chair that is visible in VR as a virtual object, but has a 1:1 physical world version occupying the same space. This means that unlike any other virtual object, this chair can be seen, touched, felt, moved, and actually sat in while the user is immersed in VR.
The purpose of this experiment seems to have been to virtually explore seating arrangements for real-world environments, and spawned a theatre planning tool by design studio [Agile Lens]. But we wonder if there’s unrealized potential in the idea of connecting physical objects that can be touched and held (or sat on) with their VR counterparts. Video demos of the chair test are embedded below.
Continue reading “Low-Tech Chair Enters the Matrix”
Here is a virtual spray painting project with a new and DIY twist to it. [Adam Amaral]’s project is an experiment in using the Vive Tracker, which was released earlier this year. [Adam] demonstrates how to interface some simple hardware and 3D printed parts to the Tracker’s GPIO pins, using it as a custom peripheral that is fully tracked and interactive in the Vive’s VR environment. He details not only the custom spray can controller, but also how to handle the device on the software side in the Unreal engine. The 3D printed “spray can controller” even rattles when shaken!
There’s one more trick. Since the Vive Tracker is wireless and completely self-contained, the completed rattlecan operates independently from the VR headset. This means it’s possible to ditch the goggles and hook up a projector, then use the 3D printed spray can to paint a nearby wall with virtual paint; you can see that part in action in the video embedded below.
Continue reading “Spray Paint Goes DIY Virtual with a Vive Tracker”
Our friend [James Bruton] from XRobots has engaged in another bit of mixed-reality magic by showing how one can seamlessly step from the virtual world into the real world, and back again. Begone, green screens and cumbersome lighting!
Now, most of what you’re seeing is really happening in post-production — for now — but the test footage is the precursor for a more integrated system down the road. As it works now, a GoPro is attached to the front of a HTC Vive headset, allowing [Bruton] to record in both realities at the same time. In the VR test area he has set up is a portal to a virtual green room — only a little smaller than a wardrobe — allowing him to superimpose the GoPro footage over everything he looks at through that doorway, as well as everything surrounding him when he steps through. Unfortunately, [Bruton] is not able to see where he’s going if he is to wear the headset, so he’s forced to hold it in one hand and move about the mixed-reality space. Again, this is temporary.
In action — well, it gets a little surreal when he starts tossing digital blocks through the gateway ‘into’ the real world.
Continue reading “VR and Back Again: An XRobots Tale”
An experimental project to mix reality and virtual reality by [Drew Gottlieb] uses the Microsoft Hololens and the HTC Vive to show two users successfully sharing a single workspace as well as controllers. While the VR user draws cubes in midair with a simple app, the Hololens user can see the same cubes being created and mapped to a real-world location, and the two headsets can even interact in the same shared space. You really need to check ou the video, below, to fully grasp how crazy-cool this is.
Two or more VR or AR users sharing the same virtual environment isn’t new, but anchoring that virtual environment into the real world in a way that two very different headsets share is interesting to see. [Drew] says that the real challenge wasn’t just getting the different hardware to talk to each other, it was how to give them both a shared understanding of a common space. [Drew] needed a way to make that work, and you can see the results in the video embedded below.
Continue reading “Sharing Virtual and Holographic Realities via Vive and Hololens”
CES 2017 is over and there were VR gadgets and announcements aplenty, but here’s an item that’s worth an extra mention because it reflects a positive direction we can’t wait to see more of. HTC announced the Vive Tracker, to be released within the next few months.
The Tracker looks a bit like a cross between a hockey puck and a crown. It is a self-contained, VR trackable device with a hardware port and built-in power supply. It can be used on its own or attached to any physical object to make that object trackable and interactive in VR. No need to roll your own hardware to interface with the Vive’s Lighthouse tracking system.
Valve have been remarkably open about the technical aspects of their hardware and tracking system, and have stated they want to help people develop their own projects using the system. We’ve seen very frank and open communication on the finer points of what it took to make the Lighthouse system work. Efforts at reverse-engineering the protocol used by the controller even got friendly advice. For all the companies making headway into VR, Valve continues to be an interesting one from a hacking perspective.
[Image source for bottom of Tracker: RoadToVR]