Introduced in March 2021, Vive Tracker 3.0 is a smaller, more power-efficient evolution of the 2.0 Vive tracker, providing longer battery life and less mass / inertia when quickly moving around. This also means that the base stations don’t need to sync at all, and the Vive doesn’t even need to time anything.” (Image by Rob Cole) This means that whenever the Vive detects a laser on any sensor, it already knows the base station that is sending that laser, as well as the exact angle of that laser from the base station. There is no longer a ‘timing pulse’, the base station does the timing internally and sends the angle directly to the Vive on the laser. “The laser will encode the base station ID as well as the current laser sweep angle. This technical difference is well described by Redditor /u/Crozone: Second-generation base station (2.0) tracking had evolved by eliminating one rotor and encoding the beam. In April 2018 HTC introduced the Vive Pro headset, Pro controllers, and Vive Tracker 2.0 each fitted with next-generation optical sensors and updated electronics. By combining multiple sensors, 2 basestations, as well as adding a high-speed IMU (inertial measurement unit), SteamVR also calculates the tracked object’s orientation, velocity, and angular velocity, all at an update rate of 1000Hz.” (Image provided by Rob Cole) By keeping careful track of the timings between pulses and sweeps, the SteamVR Tracking system uses simple trigonometry to find the location of each sensor to within a fraction of a millimeter. “How It Works: The SteamVR Tracking Basestations sweep the room with multiple sync pulses and laser lines, reaching out to about 5 meters. To understand the overall concept, the first generation of 1.0 base station tracking was described in this way by Valve The HTC Vive Tracker 3.0 is a SteamVR-compatible device, using Valve’s second-generation (2.0) base station tracking technology. Whilst the first part of this article looked at the history of the HTC Vive Tracker and its three different versions, the second part will focus on some practical experiments with the latest HTC Vive Tracker 3.0įirst though, a quick dive into the more technical side of the HTC Vive Tracker 3.0 for those who are interested in how these things work. “Track movement and bring objects from the real world into the virtual universe”. “Vive Tracker is a wireless, battery-powered SteamVR tracked accessory that provides highly accurate, low latency 6 Degrees of Freedom (6DoF) motion tracking within a roomscale environment.” (Image by Rob Cole) What is an HTC Vive Tracker?Īs described in my first HTC Vive Tracker article earlier this year: It’s going to be a very interesting post, so read it until the end!ĭisclaimer: HTC provided three of their Vive Tracker 3.0 units for my use in these articles. A few weeks ago, he wrote here a detailed article on the Vive Trackers, and now he is completing it with this new article, which is a long and detailed story of his experimentations with the Trackers and their use cases, and especially their big potential for full-body VR.
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