DELANCLiP head tracking setup with genuine TrackIR camera.

A complete guide to set up Head-tracking (Opentrack) - Hardware, Software and Controllers - IL-2 Sturmovik Forum

Gyro sensor based head tracking hardware? - Hardware, Software and Controllers - IL-2 Sturmovik Forum

TrackIR - Wikipedia

LOW COST HEAD TRACKING 6DoF $59.93 + $1.99 shipping - PC Hardware and Related Software - ED Forums

Track Clip Pro LED Head Tracker USB Head Tracking System Head Tracker Accessories Track Clip Bracket : Video Games

Customer reviews: TrackIr 5 Premium Head Tracking for Gaming

Head Tracking options

DelanClip Fusion - Wireless, Affordable TrackIR Alternative

THIS is the cheapest TrackIR solution, beat me! : r/hoggit