I'm guessing that the range of resistance values over the full swept range of the sticks was small, and so getting precise enough values/smooth enough change out of it wasn't possible. (Assuming these things basically have X and Y potentiometers for each stick.)
> I'm guessing that the range of resistance values over the full swept range of the sticks was small
My assumption was they meant the distance of movement on those small joysticks was too small, so the precision problem wasn't measuring the resistance, but in accurately moving the sticks to the right place to get the desired control input when they only have tiny amounts of travel.
I'm guessing that the range of resistance values over the full swept range of the sticks was small, and so getting precise enough values/smooth enough change out of it wasn't possible. (Assuming these things basically have X and Y potentiometers for each stick.)
[1] https://suanto.com/2024/06/06/the-time-I-built-an-ROV-06/