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Attendance

In person

Online

Ryan Scomazzon

Jerry Tian

Kenny Na

Santosh Erathasari

Megan Lee

Andrew Chai

Sam Zhang

Tim Gu

Magnus Scott (not added to Confluence)

Meghan Dang

Ahmed Osman

General Updates

  • Project manager changes

    • Kenny Na Is now a work session PM and will be organizing/running most work sessions

    • Jerry Tian Will be the eclipse PM instead.

  • Merch order

  • Work sessions SCHEDULED

  • Start of term board order

    • Waiting on ELRS redundant diversity RX

    • cutoff date this friday

    • Kenny Na to order in person with Sarah on Tuesday

  • Pick&Place machine

    • Discussed at SDC meeting, not really any new info

    • If we want it we can use it.

    • Other leads are fine with us having it in the bay

    • If we still want to set it up yeah but not really useful so just if interested

  • Co-ops? (Winter 2025 term)

    • Lowered requirements!

    • winter 2025 term co-op placements were “[awful]”, worst in history

    • 300+ engineering students in need of hire

    • accepting any creative way of getting students co-op credit

    • opening hiring wide open → 4, 5 co-op students, helping on just projects, short terms OK, flex credit possible, unpaid**, will waive in-person requirement**

    • just for this term - not a continuous effort (hopefully spring term is better.)

Flight Test

Reminders

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  • Was testing a new pump, looks a lot better than the old one

  • We will need 12V on the drone.

    • Must check if PDB has enough current for 12V

    • If not we need a 48-12V buck

      • We have one that we made but it blew up.

        • Anyone wanna look into cap filtering?

    • Alternatively we can buy one off the shelf

    • Test 12s power?

    • High current power module? - test

  • Still need to do an analysis on if the pix can support another 1-2 Servos

Eclipse Updates

  • Jerry demoed TinyCAD for harness diagrams

    • Going off of new system diagram Jerry made

    • Harness diagram timeline early Feb., mid FebUsing the XT60 2+4 connectors. assembly

    • Does anyone want to help with the diagram? Tim Gu

  • Need to order XT60 2+4 connectors so they get here early Feb ideally

  • 24V->5V @ 5A Buck Converter Board - pretty sure finished & validated? Worth checking to fly

  • 12V -> 5V @ 4A Buck Converter + ELRS Receiver board 1 & 3 not working, board 2 link drops

    • Need to order extra SX1281 RF IC & U.FL connectors to diagnose if it was an assembly issue

      • booting up without an antenna connected may have killed LNA due to high-Z power reflection

        • there was no ESP firmware when I did this on accident after assembly, but it’s still possible…

    • Otherwise out of ideas on this one… try different antennas? 😞

    • This is just for foam plane but my pride is on the line - Kenny Na

    Redundant buck - pretty sure finished? Worth checking

Project Updates

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

Andrew Chai - Research into new PM project?

  • Battery management system for custom drone battery packs

    • cell balancing

    • firmware required!

  • 12S Power Distribution Board

    • could be in time for VTOL 2026

    • integrate components and reduce harnessing

  • People interested

RPi Interface Rev C - Electrical - WARG (atlassian.net) Kenny Na Daniel Puratich

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12S ESC - Electrical - WARG (atlassian.net) Ethan Abraham& Andrew Chai

  • MODAY ORDER YAYYY

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

  • like 99% done. doing finishing touches and getting a clear DRC

  • Needs to update rules

  • Trying to get on order

12S Pre-Charge Controller ModuleRobert Tang Kevin Li

  • Needs review!!

3S ESC Kenny Na

  • Schematic almost finished - need to finish STM32 design

  • Would appreciate schematic review from anyone

    • MOSFET selection & RG value

    • Maybe start with 2.2 ohm, popular value

    • Can talk to farris

  • Layout beginning soon!

  • Estimated completion EOT W25

  • Could use some help with layout, chat in Discord!

Tracking Antenna Controller w ELRSAhmed OsmanNolan Haines

  • Osman and Nolan meeting this weekend

  • High level architecture done this or next weekend

  • Tasks not ready until next week or the week after

12V Input to 65W USB-PD Source - Electrical - WARG Ian Van Den Steen

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  • Picked out PD arbitration IC and buck boost IC

  • starting on schematic 

12V to 24V Boost Groundside Converter - Electrical - WARG Tim Gu

  • Did some math and found a few COTS options, updated confluence page, would like someone to review if the calculations/reasoning is right

    PSU is rated for up to 480 W at 12V DC, so for maximum charging capability we would get a convertor that can handle 480 W

  • Might be able to get this for ~$50 on AliExpress

    • How fast do we care about charging the batteries? (how much power/current)

    • Which option to choose depends on PSU

  • We’re using the 12V PSUs that are currently wired to the chargers. What is the output power rating?

  • How much current do the batteries need to be charged with? Charger has 4 channels, up to 15A each

  • Jerry sent photo with details

  • Maybe design for 7Ah at 1C

  • Found some options. Will pick one soon

Water System Controller rev 2 - Electrical - WARG Shawn Yang

  • MONDAY ORDER WOOHOOO

Open Tasks

  • Peggy harnessing?

  • Pegasus current limit checking

  • Replacing DMM fuze/batteries?

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