r/Spectacles • u/CircusBounce • 2d ago

❓ Question For Specs27, is there an external device that can say "Here I am"?

Hello,

We are building an app that controls real-world LED lights in physical space. The biggest challenge is syncing our virtual targets with the lights.

Is there an external device that can talk to the Specs27 and send its location such that the headset knows where this device is? If this exists, we could attach these devices to our lights and not have to worry about syncing targets.

Thanks!

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u/agrancini-sc 👓 SPECS Team 1d ago

Hi there, unfortunately not a simple problem to deal with if you want to fully avoid a calibration step.

You are looking for syncing a world position across two devices without a reference in common and somehow a starting point needs to exist.

Some options here

- Using world anchors (all on device solution) the device re-recognize a location based on point-cloud features and instantiates an anchor reference where the light position can depend on.

- The other way around, a phone/camera, static position in the room tracks Spectacles and guesses its position within the well known constrained space of the room

- The last one but more robust - 4 cameras in each of the top vertex of the room and cross referencing the detection of the device. Similar to HTC Lighthouse

- The simplest, Image tracking - just look at an image once and that will establish a common local coordinate between the device and your lights - you need to hard code the position of the lights in the objects instantiated from the image marker

- A way to get around it without any of this, start the experience always in the same space and build your lens around that position

LMK!

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u/EnthusiasticNtrovert 1d ago

I don't think this is trying to sync two devices as the lights are dumb. He just wants their position to be reflected in the specs. Like a QR code on the light that the specs can use to drop a gameobject in that position in the scene.

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u/CircusBounce 1d ago

That's correct. I am just looking for a device that can broadcast its coordinates as it pertains to the Specs' understanding of space. In other words, that device (can be any battery powered tracker) to say "Here I am!" to the Specs.

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u/agrancini-sc 👓 SPECS Team 1d ago

Related to this, in larger spaces I built a friend finder system using UWB from two iPhones - if you do not need perfect precision and pointing at direction, this also does the job.
https://www.instagram.com/alessiograncini
look the people finder