Create a team of 2 and work on the alternative apporach of creating holders for the bowden cable and attach them with the finger directly using the elastic straps - Githubissues

epfl-cs358 / 2024sp-exoskeleton

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Create a team of 2 and work on the alternative apporach of creating holders for the bowden cable and attach them with the finger directly using the elastic straps #20

Closed harismalik-1 closed 5 months ago

harismalik-1 commented 6 months ago

Participants: Wei-En & Haris

harismalik-1 commented 6 months ago

Task assigned to Wei-En and Haris

harismalik-1 commented 6 months ago

Update: Version 1 created by Haris Wei-En

annhit29 commented 6 months ago

Wednesday 1st May 2024 at 8.20pm: I printed out and tested on the dorsal side of my hand: fingerwatcher1 fingerwatcher2

The third part (the largest part on my hand, not on my digit) was printed to attach the Bowden cable.

annhit29 commented 6 months ago

The idea for the largest part has been changed: The finger watchers are now worm on the palmar side rather than the dorsal side, which will give the user more strength to play the piano.

https://github.com/epfl-cs358/2024sp-exoskeleton/assets/64964377/128a1f0a-7a75-4053-871b-61ba2baaa2db

A tube is for a digit.

I designed the tube, which will have the Bowden cable in it, such that when we pull back the finger, the Bowden cable will still be straight.

annhit29 commented 6 months ago

And another plate was created, to be put on the dorsal side to keep the tube. I would like to glue the tube and the plate together, I'm also trying to find some alternative solutions to attach them together.

annhit29 commented 6 months ago

The other solution is to screw them together, that's why there are holes. Also, the size of the tube has been decreased because it was too large for the palm.

The next step is to heat the palm's plate in order to fit the palm.

annhit29 commented 6 months ago

Update:

The v4 tube is even thinner because 1.60cm is still too large for the digits of a palm.
The plate has now pillars that will be glued together; and the plate's pillars will be inserted into the tube's holes, to make sure they don't move.

Recall: one tube is for one digit.

annhit29 commented 6 months ago

Update: the pillars of the palm's plate were too thick (2mm) so I changed it to 1mm now. The gaps between pillars were measured with Ewa (=my hand size) and Benoit (= large hand can play Rachmaninoff's piano pieces)'s palms.

Update: 1mm for the pillars are to thin. So I changed to tube hole diameter = 2.8mm and change the pillar diameter back to 2mm, then to attach and glue them together.

annhit29 commented 6 months ago

Update: the length to put the Bowden cable becomes 1.5mm, because 1mm seems to be to small.