10/28/21 Frame Design Review with Electrical

• the servo is not centered

what did we say:

• prototyping is wood

• and then we’ll buy motors and go forth

• electrical major components: currently just jetson and pi in the model

  • need arduino nano

  • custom electrical boards:

    • flight controller and power distribution board

  • 2x vector nav (apparently has annoying antennas)

  • https://www.tallysman.com/product/tw2412-single-band-gnss-antenna-pre-filtered/

• batteries: more expensive with two

  • 10000mAh 6s ~$90

  • reduces potential issues with cell voltages between the two packs in paralllel

• battery holder: 3d printed part, maybe velcro

  • slide out for battery → spacers not in the way

• gimbal: detachable?

  • easy to take off if it breaks

  • try making it easily detachable

• testing carbon fiber for signal blocking → ask to steal some from midnight sun

• pilot camera should be facing forward

• where to put pcbs? 10x15cm around

  • list for things with dimensions coming from kevin

• The VectorNav Antennas are 57mm diameter discs, we need two of em on the top.

• Landing gear → out of the way of the grabber

  • lots of drag because its kind of huge

  • retractable? bendy uppy

    • not priority because the grabber is so huge

• Motors: going with TMotors, went over spreadsheet from https://uofwaterloo-my.sharepoint.com/:x:/r/personal/bchenier_uwaterloo_ca/_layouts/15/Doc.aspx?sourcedoc={4B538B5B-15FD-4DFC-A34E-8DE5A5CB4D63}&file=WARG Budget.xlsx&wdOrigin=OFFICECOM-WEB.START.REC&ct=1634312863671&action=default&mobileredirect=true

  • yay it looks good

• NEXT FOR MECH:

  • prototyping can begin as soon as:

    • center the gimbal

    • arm attachments need more than one thing each

    • arm length? fix it

    • slots instead of holes for zip ties

    • finalize design for those curvy arm holdy boys

    • the pilot camera should be facing forward

    • add all the other electrical stuff to the frame to make sure they all fit

    • [OPTIONAL] Cindy still doesn’t like the idea of using 3D printed spacers, try to find some aluminum ones I guess but not necessary for first prototype

      • listen if our main structural support is 3D printed we might as well just 3D print the entire frame instead of using carbon fiber

      • The arm holdy curvy boys can be 3D printed because theyre huge but the spacers? small weak

  • grabber needs to start designing connections