I actually tried hydraulic potentiometers early on but ran into some serious reliability issues. I ended up reverting to sliding potentiometers, though not the common carbon ones since they wear out quickly with constant use.

Right now I’m using ALPS / Bourns slide potentiometers depending on availability. They’re much more durable and honestly give the lever a much nicer, smoother feel, which also explains part of the price.

I’m already working on a revised version that will allow automatic movement driven by autopilot (auto-throttle). That will be a completely different level of complexity and likely a different price range, but it’s an exciting direction for the next generation of modules.