There are a lot of things in our everyday life that are holdovers from an earlier time that we continue to use simply because of inertia even if they don’t make a lot of sense in modern times. Examples include a 60 Hz power grid, the spacing between railroad tracks, and of course the self-contained attic ladder which is made to fit in between standard spaced ceiling joists. It’s not wide enough to get big or heavy stuff into an attic, and building standards won’t change just for this one inconvenience, so if you want to turn that space into something more usable you’re going to need to build a custom elevator.
This attic elevator comes to us from [Brian] who recently moved into a home with about half the square footage as his previous home, but still needed to hold all of his stuff. That means clever ways of using the available space. For the elevator he constructed a platform out of 2x lumber held together with bolts and steel supports. The carriage runs up and down on a track made out 1 5/8″ super strut and is hoisted by a winch motor rated for 550 pounds, which is more than enough to hoist up most household items including a large toolbox.
Vertical storage is often underused in the garage or workshop as it can be tricky to get bulky objects off the floor safely. So we stick a few shelves on the wall, put boxes of screws and components on them, and call it a day. Meanwhile, you end up playing a game of horizontal Tetris with all the big stuff on the ground.
Before he started the actual build, [Chris] knocked together a rough facsimile of his garage in SolidWorks and started experimenting with the layout and mechanism that the hoist would ultimately use. While we’ve all felt the desire to run into a project full-speed, this more methodical approach can definitely save you time and money when working on a complex project. Redesigning a component in CAD to try it a different way will always be faster and easier than having to do it for real.
We’ve become accustomed to seeing projects include sensors, microcontrollers, and 3D printed components as a matter of course, but [Chris] kept this build relatively low-tech. Not that we blame him when heavy overhead loads are involved. Even still, he did have to make a few tweaks in the name of safety: his original ratcheting winch could freewheel under load, so he swapped it out for a worm gear version that he operates with an electric drill.
Ever since he looked into them as a way to water and care for his plants, [Tom] has been fascinated with cable robots. These high-flying gadgets can move in three dimensions over huge areas, provided you’ve got the ability to string up the aforementioned cables. But despite their flexibility, there hasn’t been a whole lot of hobbyist level development with these unique systems.
So what can you do with a cable robot? In the video after the break, [Tom] shows one of his creations dutifully transporting beer cans across the room and stacking them into a pyramid. Admittedly this isn’t a particularly useful capability (unless you run a bar, perhaps), but it does show the speed and dexterity of the system even when crossing large distances. If you’ve ever wanted to play the home edition of “Automate the Freight”, this one’s for you.
The system uses a trio of 36 volt stepper motors powered by a homebrew SLA7078 driver that [Tom] designed himself. Each stepper turns a geared-down spindle to which a strong cable is attached. With some clever routing around the workspace, careful orchestration of these small winches can be used to move the point where all the cables meet in 3D space. All that’s left is mounting your gadget of choice to this central point, and away you go.
If necessity is the mother of invention, then laziness is probably its father. Or at least a close uncle. Who hasn’t thought, “There has to be a better way to do this, one that doesn’t involve me burning precious calories”?
Motivational laziness seems to increase with potential energy, as anyone who needs to haul groceries up four flights of stairs will tell you. This appears to be where this balcony-mounted drill-powered crane came from. Starting with a surplus right-angle gearbox and drum, [geniusz K] fabricated the rest of the crane from steel plate and tubing. We like the quality of fabrication and the tip on making slip couplings from bits of square tubing. The finished product got a nice coat of brown paint to match the balcony railing; keeping the neighbors happy is always important. He tested the crane with a 20-kg weight before installing it on the balcony and put it to work hauling groceries up three stories. Check out the build and the test in the video below.
You say to yourself, “Self, I want, nay, need a lathe”. Being a good little trooper, you then did all your research, having chosen Import or American, Imperial or Metric, and all your feed options and such. You then pulled the trigger and the machine is en route to your shop. Now what?
Some people are better than others when it comes to documenting their hacks. Some people, like [Micah Elizabeth Scott], aka [scanlime], set the gold standard with their recordings. Hacking sessions with the Winch Bot have been streamed regularly throughout the build and this is going to lead to a stacking effect in her next projects because the Winch Bot was designed to record hacking sessions. Hacking video inception anyone? Her Winch Bot summary video is after the break.
The first part of this build, which she calls the Tuco Flyer, was [Micah Elizabeth Scott]’s camera gimbal hack which we already covered and is a wonderful learning experience in itself. She refers to the gimbal portion as the “flyer” since it can move around. The Winch Bot contains the stationary parts of the Tuco Flyer and control where the camera will be in the room.
The trademark hacker style of Hessian YouTuber [Homo Faciens] is doing a lot with a little. Given a package of parts from a sponsor, he could have made something “normal” like a fancy robot arm. Instead, he decided to make a winchbot. (Video embedded below.)
What’s a winchbot? It’s a big frame that supports three relatively heavy motors that pull steerable gripping arms around. It’s a little bit like the hanging Hektor / wallbot / plotterbot and a little bit like a delta-style 3D printer. Although [Homo Faciens]’s build doesn’t showcase it, a winchbot is also a great way to lift heavy things because the parts that need to be beefy — the frame and the lifting motors — don’t have to move. We love the gimballed square rod that works in concert with the winches!
With five extra servos on hand, and the computing power of a Raspberry Pi, [Homo Faciens] couldn’t just stop with lifting a claw. Instead, the gripping-arms part of the bot is mounted with four degrees of freedom and is powered with software that makes it stay parallel with the table and rotate around the gripper to make programming easier. Watch it in action in the video to see what we mean.
The biggest unsolved problem that we can see is the jerkiness that it displays in moving things around. That doesn’t stop it from building up a tower and a domino knock-down. We suspect that there’s some combination of firmware and hardware tweaking that can solve this problem, or it could just be run slowly so that the wobbles damp themselves out. We’re also quite confident that [Homo Faciens] will come up with an elegant and cheap solution. Have you seen his CNC machine?