Installation

In Blender open Edit, Preferences, Get Extensions, then use Install from Disk and pick the tractor_farm_generator zip.

Usage

1. Open the Tractor tab in the 3D viewport sidebar (N). With nothing selected, click the picture to choose one of the 62 designs, or browse the ten families, and add it at the 3D cursor. You can also use Shift+A, Mesh, Farm Machine.
2. Select any part of a machine to edit it. The card at the top shows the design; Surprise makes a new random machine, Vary changes the current one a little, the palette button picks a random livery and wear, the hitch button swaps the implement (or header) and the arrow resets the design.
3. The tabs hold every setting: Machine (kind, wheels, tyres or tracks), Implement (rear implement, front loader, header, booms), Hood & Cab, Finish (livery, colors, condition, lights), Pose (one-click poses, sliders, Key Pose) and Parts (detail, seed, rebuild, delete).
4. To animate, keyframe Wheel Roll and Steering on the root object, or set a pose, press Key Pose, move to another frame and repeat.