u/Cubemars

The project video is sourced from Magic Smoke Engineer. The creator is a photographer whose wife has a congenital condition and is unable to walk. He built a remote-controlled wheelchair for her, with over 10 km range and fast charging. The video shows how he designed and built it step by step.

Here is their website OpenEXO. Perhaps it can help you build your first exoskeleton. They are currently developing and updating a new generation of exoskeletons.