Here is the evolution of LifeTrac (see wiki work page) from design, possibly the most simple implementation of tractor-loader functions:
to steel frame:
to wheels and motor,
and to bucket:
I completed the quick attach plate yesterday, from design:
The plate mounts on the front end loader arms, instead of the bucket, and is based on similar designs used for this purpose. The quick attach plate is used to attach any implement on the front end loader. The triangular quick-attach fingers grab the implement of interest from below, and the implement is then fixed to the plate using the two horizontal pins in the picture. This way, we can switch between the loader bucket and rototiller (or any other implement) in under a minute – which will come in handy with soil preparation and loading in CEB construction. Today, I’ll be designing and fabricating the rototiller. I hope to be done by tomorrow. This is just the beginning of the entire LifeTrac infrastructure.