Agenda

• General updates for this week

• Flight test

• Reminders

• Competition updates

• Eclipse (fixed wing updates)

• Project updates

Attendance

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

  • https://forms.microsoft.com/r/Vuh2jj372G

  • Must fill by Jan31st if interested

    

• Work sessions SCHEDULED

  • https://lettucemeet.com/l/n7AK5

  • Tuesdays @ 6pm

  • Saturdays @ 3pm

  • Any objections?

• 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

    • Santosh Erathasari?

• 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

• Last flight test

  • January 19th (This Sunday)

  • https://discord.com/channels/776618956638388305/1326631979805966432

  • 2025-1-19 Autonomy Flight test - Flight Tests - WARG

  • Results:

    • collected data from 2 houston flights

    • ELRS not working

    • RPi monitor not working

• Next flight test

  • January 26th (This Sunday)

  • https://discord.com/channels/776618956638388305/1330721296262234182

  • no doc yet

  • Plan:

    • Test Target Detect using IR camera (Picamera)

Reminders

• TURN OFF DMMs WHEN DONE please!

  • They are all dead :(

• Competition Interest Form: https://forms.microsoft.com/Pages/ResponsePage.aspx?id=h1o6cprzIkqSRz_CQMATlohH8WBFXHtOjCR7Pcx0oF1UQzFXMFFCSU4xNk5LUTc4RVZMNkRYOEZSTS4u

  • Closes Jan 31st

• Don’t forget to fill out the team roster: https://forms.office.com/r/ka0MJHJQ9D

• Make sure to clean up after yourself

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

• Competition syncs Mondays at 9pm

• Eclipse sync Tuesdays at 8pm

• Reach out if you need help on a project or bootcamp

• Recruit your friends!

  • More fun with friends

  • If you like the team, then we can do even more with more people!

Pegasus/Competition Updates

• 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

  • Anyone interested?

  • Megan Lee

Eclipse Updates

• Jerry demoed TinyCAD for harness diagrams

  • Going off of new system diagram Jerry made

  • Harness diagram timeline early Feb., mid Feb. 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

  • Ryan Scomazzon on getting the best shipping times

• 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

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

  • Sam Zhang interested in both, more so bms

  • Santosh Erathasari Both cool but prefer PDB

  • Megan Lee Both look cool

  • Kenny Na PDB!

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

• Thanks for final board review Meghan Dang!

• Gerbers uploaded to JLCPCB cart, thanks Santosh Erathasari

• DigiKey component order coming soon, may order modem + extras early

  • Note: we’ve already ordered the major buck ICs and the STM32, they are on the shelf

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 & R_G 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!

  • Santosh Erathasari interested

  • Megan Lee

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

• 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

  • 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?

Action Items