This module is now getting very hard to find, Fat Shark have stopped making it.
The Trinity External Head Tracker is an external cased version of the popular Trinity head tracking module.
The FatShark 3-Axis Trinity Head Tracker Module converts your head movements into control of you FPV camera in pan, tilt and roll axes. The module is the result of pairing an accurate 9DFO IMU with a revolutionary vector algorithm that anticipates and maps real head motion in free space. Trinity delivers the smoothest and most accurate 3 axis head tracker ever. With rapid, fluid 16 bit motion, zero error, the head tracker is so natural that it becomes an extension of your environment and you soon forget you are even using one. Trinity is a quantum leap forward in head tracking performance and has changed how FPV pilots fly.
Unlike the internal Trinity head tracker, this version can be used with any FPV goggle as it is attached externally.
Included with the head tracker are a Futaba and a JR data cable and 2 types of headset powering cables, one for sharing power and one for supplying power.
3-axis control (pan,tilt,roll)
Magnetic compass, inertial accelerometer, gyroscope