Help design a height adjustable shelf

Hello, I wish to design a stable height adjustable shelf that will not wobble or shake is heavy duty and can withstand a lot of weight id also like for it to be automated. All of the aspects of the shelf are negotiable from the designs to the mechanism for adjusting the height. The only things that aren't negotiable are those mentioned in the first paragraph. The things I’m having problems with are the designing of a structure which can keep the shelf precisely the frame attached to the wall. Deciding what material it should be made of, and the overall design. I elaborate below I’m also having issues with the spring loaded bolt or latch that is installed in the frame. I don’t know how I can make it, so the bolt is pulled towards the wall into their sockets with the spring, nor do I know how I can make it so that when I pull one lever, all the bolts are pulled out of their sockets so that the height can be adjusted As you can probably see in the diagrams of my link there are pulleys, but I’m not sure if they will work or help I’d also like to know if it’s possible to have a roller blinds mechanism that can help bring it up or down Also in the link are pictures of different things including shelves, spring-loaded bolts, the diagrams I drew and the Humanscale float desk specifically the lever mechanism I’d like to copy. Also, one of the shelf designs I think would be useful is [login to view URL] This link is just the link to one image that I’m referring to The other images are in the link at the bottom of the page my basic idea of the spring bolt socket can be seen in this picture [login to view URL] These are what the numbers in the diagram correspond too. 1: One is the frame the primary structure which is where the bolt passes through into the wall 2: Two is the plywood top where all the object will rest books trophy’s gaming consoles lamps etc 3: Three Is the lever that’s connected via string to the pulley 4: Four Is the string wire beads or whatnot that are used for the pulleys 5: Five are the pulleys that are attached via string wire or whatnot, to the spring bolt that when pulled pulls the bolt out of its wall screw shelf socket when released the bolt snaps back into place 6: Six are the spring bolts that go through the bottom part of the frame they go into wall’s socket and are one of the main components of the shelf [height adjustable shelf] image folder ([login to view URL])