2024-10-09 Electrical Meeting

Attendance

General Updates

• NO MEETINGS for reading week and midterms

  • This is our LAST meeting before reading week

  • Next one TBD with date below

• New faculty advisor: Brandon DeHart

  • All roads lead to Teerstra

  • No more faculty advisors

  • Brandon DeHart Manager of the RoboHub

• Last flight test

  • Did not go well

  • Changed some configurations which did not work when we got there

  • Could have been avoided by testing in advance

  • We are working on/discussing how to prevent this from happening

  • Encouraged to read debrief: 2024-10-05 Pegasus 2 & Houston - Flight Tests - WARG (atlassian.net)

• Next flight test

  • Retrying last week

  • Testing geolocation

  • Maybe Rpi killswitch?

  • 2024-10-05 Pegasus 2 & Houston

  • Discord - Group Chat That’s All Fun & Games

• Hotplate here! - in our possession!

  • CSA approval only for AC devices

  • works good, used for reworking boards in tdy’s sesh

• Heat gun fixed!

• Midterm board order coming up @Nolan Haines .

  • I (Nolan) will being going around and asking people with ongoing boards what their status is and for a timeline for when they’ll be ready to order the board

  • Please ping @Nolan Haines in your channel if you have a board that you think should be on this order

  • We are currently aiming for Nov 1 but this is tentative - this might changed based on the feedback you guys give me about your timelines

  • Confirmation this week

  • Might be worth pushing it a week? - no more than that

• @Jerry Tian is gonna do a presentation on validation on oct 28

  • topics:

    • theory behind tests, e.g. load/line regulation, load transient, buck vout ripple

    • instrumentation, e.g. eload internal circuit, eload v.s. source measurement unit (SMU)

• Missing GPS

  Open

  

• Airplane cleaning using Dallas

• Dallas new name instead of Houston.

Reminders

• Get the electronsite role if on site - reach out to @Ryan Scomazzon if you have issues

• Check out Conops for AEAC! Get involved in comp syncs for discussion National Annual UAS Student Competition - Aerial Evolution Association of Canada

• Competition Architecture Sync: weekly Thursday at 8 PM in E5 2103.

  • 2024-10-03 Competition Architecture Sync - Meetings - WARG (atlassian.net)

  • Last competition sync: 2024-09-26 Comp Arch Sync - Meetings - WARG (atlassian.net)

• Fixed Wing Architecture Sync is on every other Wednesday at 8 PM in E5 2103

  • tonight at 8pm!

• If you are on a project and can use some help, reach out

• Toaster oven not acquired yet - if you would like to help let me know

• Don’t forget to fill out the team roster: Microsoft Forms

Meeting Times

• Mondays at 8?

• Same time?

• Monday at 6? https://lettucemeet.com/l/dMlwv

  LettuceMeet - Easy Group Scheduling

New Lead Selection

• @Nolan Haines Is stepping down at the end of this term

• Planning on onboarding his replacement early

• Please fill out this form if interested:

  • https://forms.gle/UJV1EkaV6RZ87qoAA

  • Form will be open until October 28 @ 11:59PM

Board bring up Status

Please update test plans/board documentation!

• Discovered issue with buck on multiple board

• Vin tied too high

• Vdd needs external ldo supply

• Tried to rework tracking antenna - didn't work today

• Looking for other mistakes causing issues

Plan Going forward:

• Looking into better board review process

  • should implement formal review process - be more thorough and meticulous in review process

  • checklist - we have one but have not been using it lately

  • have multiple people reviewing and splitting up work for different components

  • have other ppl review design, not just main engineer

• Be careful about taking designs from other boards that have not been brought up and validated yet

Peggy 2/Comp Updates

• @Jerry Tian For Peggy 2

• no tasks on peggy 2 this week

  • analog system unvalidated

  • lighting boards coming up

  • harness schematic in the backlog

  • tracking antenna not working

• Documenting battery harness can be done still - lower priority

• LEDS boards should be installed as soon as validated

Eclipse Updates - Fixed Wing 2025 - SysInt - WARG (atlassian.net)

• New program name!

• The below boards should be included

  • 6S servo module

    • making new rev to be ordered with midterm board order

  • Single Servo Driver

    • should be good, needs: rework and validation

  • 6S power module

    • highest risk

      • lowest necessity (RIP lol - Andrew) :(

  • CAN Integration 2025

  • Come to meeting tonight

Bootcamp Updates

• Continue to pop off and ask questions in your bootcamp thread

General Tasks

In order of priority. These are the active design projects.

• RPi Interface Rev C - Electrical - WARG (atlassian.net)

  • @Daniel Puratich Project Manager, Principle Hardware Engineer

  • @Siddharth Muralikrishnan @Anthony Lazar @Anthony Luo @Shawn Yang

  • Daniel reviewing components made by Shawn

  • More progress to come on Sunday

  • Need 5 channel TVS diode for Sim cards

  • Still much left to do

  • LTE Breakout - Electrical - WARG (atlassian.net)

    • Canceled, now part of RPi Interface Rev C - Electrical - WARG (atlassian.net)

• 12V -> 5V @ 4A Buck Converter + ELRS Board - Electrical - WARG (atlassian.net)

  • @Kenny NaEngineer

  • @Daniel Puratich PM

  • Layout mostly done

  • Reviews in progress - open to review for anyone interested

  • Will be included on midterm board order

• 24V->5V @ 5 A Buck Converter Board - Electrical - WARG (atlassian.net)

  • @Robert TangEngineer

  • @Kevin Li PM

  • Almost done will be on midterm board order

• Unified Video System - Electrical - WARG (atlassian.net)

  • @Tom Chiu Individual Contributor

  • Review stage currently

  • Optimistically going to be on board order

• 12S ESC - Electrical - WARG (atlassian.net)

  • @Ethan Abraham Individual Contributor

  • Knowledge transfer done with @Andrew Chai

  • Schematic put for review, Andrew will be addressing comments and taking ownership from here on

    • Schematic almost done, looking into different FETs

  • Will be done before finals

• ELRS Redundant Diversity RX - Electrical - WARG (atlassian.net)

  • @Nolan Haines Individual Contributor

  • placement first draft done - working on draft 2 of placement

• Sensor Cluster - Electrical - WARG (atlassian.net)

  • @Michael Botros

  • Moving on to placement

  • Also reviewing all footprints again

• 6S Servo Module Rev 2

  • @Meghan Dang Individual Contributor

  • probably not gonna be stencil compatible :(

  • will likely implement different buck design

  • adding more LEDs for power rails

  • changing MCU pinout

  • changes to be made for schem and layout

  • Hopefully going to be on midterm board order

• Pegasus wiring documentation

  • @Ahmed Osman @Jerry Tian

  • hardware/Harness at master · UWARG/hardware schematic is here

  • no updates

• Tracking Antenna new rev!

Potential New Project: USB-C Sink

UCB-C Sink - Electrical - WARG (atlassian.net)

Potential new project: Standard connectors fixed wing

• VBat, CAN, 5V in one connector

• Easily have everything together so it is easy to remove parts

• GG @Ryan Scomazzon or @Jerry Tian

• Molex MX150?

  • Clipping is important

  • Too much weight?

Action Items