openbci-archive / spiderclaw Goto Github PK

Also the design has a ton of overhangs that make 3D printing very tedious.
In places where no overhang is needed at all because the arms could very well extend down onto the surface without interfering with the function.

Also there is no explanation as to the rubber band mechanism.
You have to figure out that part by guessing from low resolution photos of people wearing it.

The design is not symmetric. You cannot attach any part to any other part.
There is no reason for every part to have a "male" and a "female" side,
where they could have male and female on both sides (rotational symmetric around the vertical axis).
Currently the PCB-holder is male, the arms are male+female, so the ends will always be male.
But the electrode holder is male too and thus doesn't fit onto these ends.

The Spiderclaw V2 holds the main board very well... but there doesn't seem to be a means of attaching the battery holder anywhere at all.
(At least it's not documented here.)

I am contemplating attempting to design a fastener for the OpenBCI electrodes so that they can be attached to some sort of stretchable fabric. My motivation for this is that the 10-20 system (while great for BCI applications) is inadequate for neuroimaging studies and I would like to see if there's a way to build a research grade high-density electrode net with >= 64 electrodes. I am not aware at this point of any open source hardware capable of supporting such a high density net, but I imagine that such hardware could be a possibility in the future, so I feel that any effort towards contributing toward an open hardware high density net might be worthwhile.

Since STLs are dimensionless, however, I do not know what I would be working with in the real world, so I was wondering what the dimensions are for the electrodes used by OpenBCI.

The current Spiderclaw design doesn't work with the hardware that was shipped to Kickstarter backers. We need a design that fits the board and pieces.

The README notes that there will be a December update to match the shipped hardware. Well, I've received my shipped hardware but there is no update. I'd like to see the STL files updated so I can print a Spiderclaw that fits my hardware.