[chapplap]

For a true turn-key solution you probably need the entire stack from sensors up to software. Intel's RealSense cameras (the T265 specifically) is probably the most reasonably priced option for a hobbyist with reasonable APIs. Visual and visual-inertial SLAM are not at a point where open-source packages are robust and easy to use with an arbitrary sensor stack and environment.

If you only have 2D motion and can spend more money or mess around with unsupported hardware (salvaged Neato vacuum) a laser rangefinder is also a decent option.

[__m]

Do you know how Real sense compares to the Kinect 3(aka4)?