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Ada Robotic Hand

by openbionics Jan 26, 2016
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Printed these out. There are notches around the palm after slicing with slicr3, re-export the .STL fixed the problem. Also, the links between fingers and the palm seems quite easy to break off. Are they supposed to be connected all the time? If so, regular PLA won't do the job.

the links to the parts don't work 404 error

I can't find any instructions and something about installing the firmware on the link. Where can I find the instructions?

I am not the designer but can answer all those questions like is there a right and left hand, where to get the printed circuit controller and about the CAD files Easy answer. This project is stored on GitHub. Only a subset of the files were posted here. If you want a PCB you will have to have it made from the design files.

Be warned that the linear actuators this hand uses cost about almost $100 each and you need five of them.


Can you share the palm files with the proper support generated on here or on jasmeet@jmoon.co
I think the simplify3D software is generating too much support for the internal parts of the palm in the orientation you've mentioned.
Printing using a TEVO Tornado Printer.
Great design by the way :)


Is there any way I could get the original IGS files for this hand? I am getting a couple of errors when I try to load the palm STL file into the 3D printer software.

The left hand where is it? I try to make a prosthesis for a guy who has lost his arm .. Thank you for your work!

where can i buy the almond PCB?

i'm doing a similar project right now and this design would be like an improvement compared to my design,
how much did you spend for the entire project?
and is there any video on assembly of the hand?


I wonder if I can graft this hand onto my InMoov build, modifying to incorporate the servos in the wrist that the InMoov uses. it is a thing of beauty.

The actuators and that control PCB seem very expensive. Why would that be?

PS - This is very very beautiful.

Hi Doc,

Thanks for your comment.

We find the price for the Ada hand kits to be extremely competitive with other robotic hands. Most robotic hands for research purposes would run well into the thousands of pounds. The MechaTE robot hand is the only other one in this price range and it's more expensive but doesn't have a control board.

The reason the individual components are priced as they are is due to the low manufacturing volumes. A robotic hand is not a consumer product so the components can't be purchased or manufactured in high volumes and hence cost more unfortunately.

PS - Thank you, we really appreciate your kind words on the design.

Thanks for the feedback - I certainly don't know much about this exact application space, though I am well acquainted with electronics in general. I was just getting excited to build one but then saw the electronics cost was around 10x what I'd be able to commit to such a project. Maybe later. Keep up the wonderful work!