Melexis MLX90333 is the 3D sensor used in T.16000M, Warthog, X-55/56.

But is not option for DIY because require programming their parameters, e.g. in how many degrees will read 0 to 5 volts, what make easy match with gimbal movement, what require a costly hardware programmer, and besides this their communication with controllers is in digital mode, what require compatible controller/firmware.

A analog version of this sensor, but working in linear mode is available in eBay, see in previous page user experiences. But is not replacement for '3D" version in joy gimbal.

I guess a similar version (not 3D) is used in MFG Crosswind pedal.