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eric-wieser / 2.12-robot

Final project for MIT's 2.12 - Intro to Robotics
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Are we sure the small motors will be up to moving the arm? #16

Closed eric-wieser closed 8 years ago

eric-wieser commented 8 years ago

I think we could get away with the small ones on the rail, which would give us the bonus of a speed increase there, and leave the big ones to operate the arm

simpri21 commented 8 years ago

this should be fine, the small ones should be able to lift about 15kg each and mt simmons is only 12kg

simpri21 commented 8 years ago

i guess the issue is how fast they'll be able to go, right now it looks like we'll be at 1 rev/s if we picked up the whole mountain at once

eric-wieser commented 8 years ago

CAD as it stands still has the big motors on the rails. This shouldn't change which parts we need to order (#7)

simpri21 commented 8 years ago

Ok. The smaller motor will be faster than the bigger one so it might be beneficial for us to use them on the rails. I can swap them in if we're good with that

eric-wieser commented 8 years ago

Sure, that sounds good. Note that the MX-64 cad model doesn't have the horn as a separate piece, but the shape is included in the bulge in the front, so you can just mate that to the pulley.

eric-wieser commented 8 years ago

I can swap them in if we're good with that

We currently have a CAD model that uses 106Ts for all four motors. As it happens, the TAs said that due to a lack of 64Ts, we might be able to get away with this.

Do we still want to swap the belt motors, and if so can you do so, @simpri21?

eric-wieser commented 8 years ago

We're using the 106s now, due to being allowed to. Whether we should use the small motors for the rail is a separate issue