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Hand: open-source Robot Hand
- commiefornia 1y ago[dead]
- agumonkey 1y agoAnybody knows of similar projects for exoskeleton or support devices?
- lucidrains 1y agohttps://theopenexo.nau.edu/ https://theopenexo.nau.edu/
- agumonkey 1y agothanks a lot
- Joel_Mckay 1y agoYes, it is a technology originally intended to make spacesuits less brutal on astronauts hand/wrist/forearm fatigue. Last I checked, project was shelved in 2020 for various reasons. =3
- ImPostingOnHN 1y agoLooks like this product is called AmazingHand (and there are billions of "hand"s in the world), so the title might have some room for improvement as far as searchability goes.
- deleted 1y ago[deleted]
- amelius 1y agoWould it be possible to have tendons running through the arms, so the weight of the hand is reduced?
- stefanka 1y agoMost tendons materials are elastic. That lead to create calibration problems and require proprioceptive sensors in the hand
- fusslo 1y agoHuh, never thought of that I wonder if companies are experimenting with materials like UHMWPE for non-elastic, high strength-to-diameter tendons. I dont know if you'd have to weld the dyneema to the anchor points, though
- imtringued 1y agoI think you're misunderstanding the essence of the problem. If you use tendons, you'll need a neural network in your control loop that can learn continuously so that it compensates rope stretch and changes in friction through wear and tear. A lot of problems in robotics reduce down to continual learning. Essentially all system identification tasks become obsolete the moment you have a self learning system and yet we have an AI industry preaching that AGI is around the corner without this "crutch".
- stefanka 1y agoNot to mention that they easily break and are annoyingly tedious to be replaced (I had to assist often enough on such "surgeries" in our lab)
- amelius 1y agoYou could add encoder patterns to the tendons, like stripes. And then use something like a mouse-sensor to track them. This is still much lighter than servos. Another idea is to use an external camera or two and to track the fingers with a deep learning model. But this can become messy if other objects are in view. And it might also introduce more control delay in the feedback loop than a simple sensor.
- 1y ago
- mclau157 1y agoPollen Robotics and HuggingFace are doing a lot for robotics right now!
- deleted 1y ago[deleted]
- ge96 1y agoWonder if it will get adopted (huggingface robot) I noticed the eyes/cameras go behind the neck thing for sleep mode
- mft_ 1y agoThis looks like a nice, approachable robotic model of a human hand that can be printed and experimented with. But... is a human hand the best design for a robot to grip things with? Or could we surmise that the human hand evolved as a pretty good hand given the materials and senses that were available to evolve humans from, while in theory a totally different design might be optimal for gripping when constructed from metal, plastic, motors, etc.?
- bigmadshoe 1y agoIt’s easier for humans to train a human hand
- atrus 1y agoDepends on what you mean by best ofc :P If anything, the human world is built for humans, so a lot of existing things are naturally compatible with human hands. Also, take into account flexibility. It might not be the best for one job, but it's really okay at a lot of jobs.
- magicmicah85 1y agoIs there a better design? I ask this genuinely, I really don't know but I suspect that the human hand is versatile enough to allow it to be programmable for a variety of tasks.
- mandeepj 1y agoYou can make it switchable! Think of it more like a dye, if that helps.
- a_wild_dandan 1y agoOur modern world was built for hand-havers, so we build hand-havers for general interaction with the modern world. This vicious cycle will end, but a certain amount of inertial clunkiness is inevitable in nascent technological disruptions. Especially in moments as grand as the second industrial revolution.
- TechDebtDevin 1y agoWould you prefer necrobotics!?! https://www.smithsonianmag.com/smart-news/scientists-use-dead-spiders-to-grip-objects-180980498/ https://www.smithsonianmag.com/smart-news/scientists-use-dea... How long until human hands are put on robotics??
- mandeepj 1y agoThe bigger or biggest question is - how much weight it can lift? If we assume it can lift half a pound, then what changes it’d require to make it lift 10/20/30 pounds and so on?
- micromacrofoot 1y agohands hold, arms lift — a hand without an arm isn't going to have much strength
- horsawlarway 1y agoYes, but this is "bring your own arm" so the person above you can easily build the arm out to whatever specs they'd like. They probably want to know relatively important information like - Breaking force (how much force will break a finger) - grip force (How much force can the fingers exert to hold an object once closed) - holding force (combination of grip force and material properties [ex - friction] that gives you an idea how much force can be applied to prevent slipping) - closing force (How much force is exerted during closing [similar but distinct from grip/holding]) Or, with a lot less specific detail but still generally useful as a starting point... - payload capacity (approximately how much can this safely manipulate)
- ortusdux 1y agoI wonder if I have time to make one of these and then decorate it to look like Thing for Halloween!
- Brajeshwar 1y agoHere is what I’m more keen on, rather than the human-like robots that we are all expecting. For instance, I would like a wall-mounted or floor-standing multi-arm robot that serves as a kitchen assistant. One can add or reduce arms as needed/desired. It is custom-equipped with a fire extinguisher, thermometer, and the usual must-haves for a kitchen. It will hold the cutlery, plates, and other items as needed. It will also advise on the likes of, “No, salts usually go in a pinch, would you like me to add in just about 5 grams?” Thus, similarly for the garage, the DIY table, etc. Just Arms would be good.
- thrance 1y agoTbh I would rather not have computer-guided knife-flinging arms in my home, be them on wheels or fixed to the wall.
- sroussey 1y agoI have a parrot (whose beak is sharp enough, thank you very much) that loves to grab a knife out of the knife block and spin around with it. I have to put a towel over it though today he pulled the towel off and still grabbed the knife and was holding it up when I turned around.
- seanthemon 1y agoIt's a well known fact that birds aren't real and you must be a target now.
- 0_____0 1y agoLike a mischievous toddler with wings...
- scotty79 1y agoI always imagined robot hands hanging and sliding on rails under top kitchen cabinets.
- goopypoop 1y agoperhaps sir would prefer… tentacles?
- binsquare 1y agoThe world is designed with humans in mind, it's great to see robotics evolve in this direction to take advantage of that!
- breakpointalpha 1y agoWhat jumps out at me is the $135 bill of materials. What a time to be alive!
- jjangkke 1y agoMost hand related jobs upwards of $100 per 30 min If this Robot hand can do those jobs we could see some industries take a hit
- delijati 1y agohttps://m.youtube.com/watch?v=6pbgOmaBx34 https://m.youtube.com/watch?v=6pbgOmaBx34
- 0_____0 1y agoPeople have been making end effectors using hobby servos for ages. These servomotors are designed for use in an RC aircraft, they're light, cheap, and expendable. Industrial needs care not about weight, care less about cost, and care a great deal about capability, repeatability, and reliability. This is a cool project for a hobbyist but it's not meant to be a serious industrial machine. Edit: what is with this thread? Lots of very generic positive comments here but not much thinking about what this is actually useful for.
- pwndByDeath 1y agoWoosh
- 0_____0 1y agooh....oh no....
- radlad 1y agoI think the confusion stems from the fact that you're responding to a joke innuendo thread.
- glitchc 1y agoThis is great, but to make a comparable hand, we also need very sensitive sensors, at minimum pressure and temperature, across the entire surface area.
- falcor84 1y agoAbsolutely, though I'd be ok with just pressure as a starter.
- schainks 1y agoI swear I've seen this before somewhere..
- deleted 1y ago[deleted]
- SequoiaHope 1y agoBeautiful design and I love that it’s in onshape with an aliexpress BOM. I might build this!
- fitsumbelay 1y agoI love that it's cartoon style -- 3 fingers and a thumb instead of four
- FBISurveillance 1y agoGreat stuff. So 2x$135 and I'll finally get my t-shirts folded for me in the laundry room.
- TheAceOfHearts 1y agoDoes anyone know what design considerations, if any, might've gone into deciding to have 4 fingers instead of 5? And what tradeoffs that entails? I actually saw this posted a few days back on Twitter and had been wondering if there was any deeper consideration for the number of fingers. It seems like you save around $10 in parts by getting rid of a finger, based on the information in the BOM.
- p_d_r 1y agoIt looks like the width of the servos driving each finger makes a certain finger spacing necessary, and I bet five made for an awkwardly wide hand.
- michaelt 1y agoIgnore the fact the hand is as thick as a servo motor, for now, and just consider the palm width. This 4-finger hand is just below 4 inches wide, across the knuckles. By the standards of gloves for humans, this is already "X-Large" The SCS0009 servos are 1/2in wide and there are two for each finger. Adding two more servos would make it 5 inches wide, taking it into "XXX-Large" territory.
- ChaoPrayaWave 1y agoThis is what open source hardware should look like: fully accessible, modifiable, and fit for iterative improvement. It’s no longer about closed “prod tech” it’s about community driven evolution.
- arnejenssen 1y agoCool project. I've heard that robotic hands should have finger lengths that are not equal for more dexterity. The variation in finger length of a human hand is a feature not a bug.
- fareesh 1y agowhat are some automation use-cases for something like this? feels like a cool project/toy
- conflictracker 1y agoLooks cool. Is there any other open source projects similar to this?