2021-03-23 Meeting Minutes - General

Owned by
Olabisi Sanusi
Aug 21, 2021
3 min read

Goals

  • General updates
  • Project Updates
  • New tasks


Update & Action Items

MemberUpdateAction Items
Asha ME, Emily A, Rehnuma (Science)
  • Created set screw holes to tighten centrifuge pieces to shafts - do we have heat set inserts still?
  • Created locking mechanism for test tubes
  • Made new funnels
  • Made a pi cam mount - still need webcam mount
  • Going into the bay this weekend to implement changes


Mathieu H, Austin, Rehnuma (Arm)
  • Wrist issue has more or less been diagnosed (looks like we may be able to get away with light machining fixes to adjust fit)
  • Wrist disassembled and fixes are in progress
  • 3d print for wrist cam and tooling bit will be adjusted soon (sry)


Jasmine M, Austin, Ethan (E-box)
  • Made all last minute updates, please review drafting channel post
  • New BOM 
  • More connectors ordered

  • Design review soon then we can send it
  • Need to update interior layout and some printed components, but wont affect the ebox frame for fab whatsoever


Haseeb (LED board mount encoder mounts design for drivetrain)
  • In progress, finalized design.
  • Ethan wants to change the PCB, so its less heavy, so I am gonna do that.
  • Will also be adding actual Encoder as well to CAD



Emily, Medina, Elizabeth (Harmonic Drive)
  • Prepping lightning talk



Ethan (CAD cleanup)

PLEASE USE PROFILE CENTER FOR FASTENER MATES

PATTERN AS MUCH AS POSSIBLE

  • Arm and Main assembly to go
  • Documentation on new standards
  • New standards will be in Google drive > Mechanical > CAD protocols (for now)

MOVE OBSOLETE STUFF TO ARCHIVE

  • To do:
    • new naming scheme
    • Setup file properties
    • Build tests
    • New file templates
    • Update/expand/improve Fastener library - heat set inserts? Shoulder bolts? Appearances? Missing Sizes?
    • Setup config standard (old configs always get messed up)
    • verified/reviewed metadata tag?
    • Improve training
    • Document everything… (move to confluence)


Asha
  • Ansys? -> Tony sent me the contact info of our connection - Mathieu

Austin
  • Sponsorship packages for demtool wyrks and agile will be sent this week


New Tasks


Task

Name

Force-sensing claws

Shreshth Mehra

Drivetrain revamp

Max Apitz-Grossman

Emily Adam

Andrew Tersigni

Andrew Zhang

Fixing 2021 CAD

Ethan Cronier

Harmonic drive

Emily Adam

Medina Colabrese

Elizabeth Jung

Battery

Ethan, Rehnuma

Custom wheel research

Max


https://drive.google.com/drive/folders/17vSvjMwP4Q2ede3X4Nca8yVGhYfp8aLu?usp=sharing 

New Tasks for Competition


Task

Name

Arm Elbow Backlash

Jasmine and Ethan

Arm Wrist Gear Meshing

Mathieu, Austin / Rehnuma

New PCB mounts for arm

Andrew (refer to Aidan or Wolfgang on electrical)

Encoder mounts design for drivetrain

Abdul 

Camera carriage redesign

Max - done

General Notes

General Updates

Arm Issues and New tasks

  • 3D printed camera mount failed, needs to be reprinted
  • Gear meshing for the wrist is loose, needs to be fixed
  • Elbow backlash is pretty bad, needs to be investigated and a fix should be implemented
  • All motors should be 24V (right now, the turntable, shoulder and elbow motors are 12 V)
  • Tooltip needs to be finalized and installed on the wrist
  • Design new 3D printed mounts for the arm pcbs
  • The goal is to have the arm functional so that fw and sw can test 

Drivetrain Issues and New Tasks

  • The chain connecting the wheel to the gearbox broke. A new one was ordered and seems to be doing the trick. More spares to be ordered
  • Tires need to be changed
  • Gearbox gear shattered, another one sheared pretty bad. We need to order more.
  • New encoder mounts need to be designed and 3D printed

Gimbal Issues and New Tasks

  • The lack of bearings in the design is making the assembly very loose, with a lot of play between the parts. 
  • A redesign of the camera carriage is needed, with the roll axis removed. Keep in mind the camera cable coming out the back