Open Joseph-Rance opened 3 years ago
UPDATE 16/10/2020:
I got together a list of parts for the servo power supply, and the components have been sent off. We will be meeting at 6:30 Saturday to discuss the CAD modelling
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From the call:
link
6 servos on bottom, 2 on beta, 3 on grabber
Because we need to make a decision on this and I keep forgetting to bring it up in meetings, I'm just going to make it now: x = 0.4m; y = 0.35m.
MESSAGE FROM COM SOC DISCORD @BlueScorch2 @[Gwon] @[rebeka] So its going to be us 4 and Hemanth working on the arm.
Mr. McCain mentionned that we have two different 3D printers when we met him at lunch. The filament we are getting is 1.75mm so we'll be using the flash forge finder (in case you need any specifications for part size etc.)
I think it will be best if we give each person a specific part to work on. I want to decide what everyone is going to be doing ASAP so if anyone is feeling inspired they can begin already, however we have admissions tests coming up so we'll only properly begin modelling on the week beginning the 9th. I think we should aim to have models complete two weeks after that.
Of course, we will almost certainly meet more problems and decisions, so if there are any issues I'm happy to do a meeting (or dm) to talk about them. Also, we'll have to collaborate a bit to decide how each part will connect to the others, so we need to all meet at some point anyways.
Info for modelling (inc. notes from last meeting) should be here: https://github.com/Joseph-Rance/Com-Soc-robotic-arm/issues/1
If you have a question, that above link may be a good place to ask it so everyone else can see.
With regards to who is doing what, does anyone have any preferences? Also how much each person is willing to do? I imagine we'll split the components up like below: person 1: alpha hinge + servo holders for alpha person 2: beta hinge + servo holders for beta person 3: gamma hinge + servo holders for gamma person 4: grabber + camera person 5: x and y beam (+ wire management)
Also, is it possible to get a channel in the eng soc team so we can include Hemanth (and anyone who joins late) in all this?
Com Soc team todo:
servo dimensions: 40x19x43
Todo before 5pm saturday:
Another diagram similar to the ones above
Joe (by next week):
Hemanth:
Gwon:
gripper and cross section files: robot arm main.zip
If anyone needs the servo layout the most up to date conversation I can find about that on discord has this layout: 1 servo for gripper finger movement 1 servo for gripper rotation 1 servo for gripper up/down 2 servos at "elbow" 6 servos at base for up/down 1 servo for base sideways rotation
new gripper and x section files: robot arm main.zip
badly edited image of them together:
Update: robot arm main (2).zip
Update: robot arm main (2).zip image
I just realised that the rightmost servo here needs to be facing the left
Edit: the cylinder on the right needs to be rotated 90 degrees
Added a hold with top diameter = 21mm (depth 7mm) and bottom diameter = 32mm (sloped)
Akilan and Hemanth: make your x section end in I shape
Files: robot arm main (3).zip
left to do:
changes to beta/elbow/xy joint:
updated models.zip
bullet bill.zip
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5.85 mm diameter spline