2024-11-06 Electrical Meeting

Attendance

General Updates

• Last flight test

  • 2024-11-02 Competition Flight Test

  • Was extremely successful

  • We were able to test a lot of things on 3 different airframes

  • harnessing on Peggy 2 worky

  • tracking antenna ee-side worky

    • not able to test with dallas, but not an ee issue

  • big dubs

  • Auto data was kinda messed up and efs couldnt get tracking antenna working

• Team photo

  • now up on the website!

• Midterm board order

  • Now Nov 11th (Original date was Nov 4th) @Nolan Haines

  • Current boards (speak up if we are missing you)

    • Tracking antenna rev 2 - Ryan

      12->5V @ 4A buck - Kenny - Daniel

      USB-C Sink - Kenny - Daniel

      24V->5V @ 5A buck - Robert - Kevin

      6S servo module rev 2 - Ian - Meghan

      Water Controller - Shawn - Daniel

      RPi interface rev C - Daniel

      Unified Video System - Tom

      Sensor Cluster - Michael -

      quadversity ELRS - Nolan

      straight can splitter - Daniel

      programming conn adapter - Meghan

    • Led controller rev 4

• EE Wednesday Worksesh replaced with a review sesh

  • reviewed

    • Unified VTX

    • Water Controller

    • Buck w/ELRS

    • Programming Conn Adapter

• Friday Worksesh

  • RPi mounting on peggy 2 possibly @Jerry Tian

• Sunday Worksesh

  • TBD

  • no more bringup tasks really

  • could do an altium sesh - let us know

• EE Knowledge Session - MOSFET Selection

  • Hosted by @Farris Matar

  • November 7th @6pm (tmrw)

  • come!

• EE Social

  • escape room

  • baking

  • game night

  • tentatively set for nov 15th

• Comp/Eclipse sync

  • Eclipse sync tonight @ 8pm

  • Comp sync tmrw night @ 8pm

• Consider using JLC parts in the future?

  • Look at preferred parts

  • Basic & Preferred Electronic Components | JLCPCB Assembly Parts Library

  • Can use LCSC but costs more so try to avoid

  • @Nolan Haines @Kenny Na to fill this in

  • this convo explains more Discord - Group Chat That’s All Fun & Games

  • can select to place or DNP a component

  • would need the designer to replace components with JLC compatible ones

  • will take time.

  • making a WARG account for JLC

• WEEF presentation done - went well

Reminders

• Please clean up after yourself

  • make sure that after bringup, all the boards and components are back in their boxes! don’t want to lose any

• 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

• 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

  • check facebook marketplace there’s like 40 million https://www.facebook.com/marketplace/112763262068685/search/?query=toaster%20oven

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

• Missing GPS

  • probably gonna order

    Open

    

Board bring up Status

Please update test plans/board documentation!

Board Name	status	blockers	plan going forward

Board Name	status	blockers	plan going forward
GPS Breakout	where are those gps boards	need to order new GPS boards @Ria Prakash	https://uwarg-docs.atlassian.net/wiki/spaces/Meetings/database/2752839681?entryId=e839dcd8-defc-42f1-8280-8e2c21fbeea5
Single Servo Driver	Buck and LDO confirmed to be working. Load and efficiency testing completed, looks good. Load transient testing in progress	Load transient testing → EFS Firmware testing	https://uwarg-docs.atlassian.net/wiki/spaces/Meetings/database/2752839681?entryId=726878aa-bcb8-4728-9eed-18483cfb5c94 Open
6s Power Module	Both sides assembled Still needs some cleanup with connectors and AFE chips Buck was validated somewhat last week, once cleanup is done, testing should be done on all 3 Need to validate the rest of board, checking for continuity and shorts	Needs firmware for other side to do voltage and current sensing using the AFE chips

Peggy 2/Comp Updates

• @Jerry Tian For Peggy 2

• LED Harness works well! Thank you everyone for helping out!

• next step is to install Rpi, harness schematic design will come next Tuesday, assembly the day after

• POR is to use one of either Single Servo or Water controller

• LEDs on and lookin fire

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

• The below boards should be included

  • 6S servo module rev 2

  • Single Servo Driver

  • 6S power module

  • CAN Integration 2025

Bootcamp Updates

• Keep sending questions to your respective threads!

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

  • not on midterm order

  • descoping this project

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

  • @Kenny Na Engineer

  • @Daniel Puratich PM

  • All done :)

• USB-C Sink - Electrical - WARG (atlassian.net)

  • @Kenny Na

  • Done :)

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

  • @Robert TangEngineer

  • @Kevin Li PM

  • Done :)

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

  • @Tom Chiu Individual Contributor

  • reviewed today

  • minor fixes from comments, but will be done and ready for board order

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

  • @Ethan Abraham Individual Contributor

  • Knowledge transfer done with @Andrew Chai

  • Placement in progress, will have done by Friday

  • 2-3 weeks from completion (estimate)

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

  • @Nolan Haines Individual Contributor

  •  

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

  • @Michael Botros

  • Placement finished. Stackup mostly definined. Most of signal routed. Just need to make power planes/polygons.

  • Considering impedance controlling SPI lines for >10MHz data speeds. Maybe just tune source resistor when board comes back instead of controlling line impedance → decided to just tune the resistor

  • Need to check if length matching is necessary → time difference between currently routed SPI is < 30ps, not applicable for a few 10s of MHz

• 6S Servo Module Rev 2

  • @Meghan Dang Individual Contributor

  • @Ian Van Den Steen for buck design and layout

  • buck design and layout finished

  • starting on placement and layout with new buck and new MCU pinout

  • will need a few more days for this. delaying for later date (nov 11th)

• (Rev 2) Tracking Antenna Controller Improvements (M3) - Electrical - WARG

  • @Ryan Scomazzon

  • Ready for review

  • Added flyback, switched current lim IC, swapped buck

  • @Ian Van Den Steen please verify it has the most recent design of your buck

• Fixed wing connector research (VBat, CAN, 5V)

  • @Ryan Scomazzon

  • No progress

• ELRS Gemini Testing/Rev 2

  • @Ahmed Osman

• Water System Controller - Electrical - WARG

  • @Daniel Puratich PM

  • @Shawn Yang Engineering

  • reviewed in today’s sesh

    • minor comment fixes for layout

• Straight CAN splitter

  • @Daniel Puratich

  • done :)

• Programming Connector Adapter

  • @Meghan Dang

  • reviewed in today’s sesh

  • done and gerbers in soon

• LED Board Rev 4 - Electrical - WARG

  • @Parker Lawrence-Valeriani

  • Cleanup is done

  • Adding side emitting LEDs to make the drone more visible

Potential new projects

12V Input to 65W USB-PD Source - Electrical - WARG

• @Ian Van Den Steen interested

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

• @Tim Gu interested

Action Items