2024-11-27 Electrical Meeting

Owned by Ryan Scomazzon
Last updated: 2024-11-27 by Kenny Na
5 min read

 

Attendance

In person

Online

In person

Online

@Ryan Scomazzon

@Meghan Dang

@Andrew Chai

@Kenny Na

@Ian Van Den Steen

@Shawn Yang

@Jerry Tian

@Tim Gu

 

General Updates

Reminders

  • Please clean up after yourself

  • 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

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

  • Missing GPS

    • RIP - Gone forever likely

    • probably gonna order

      image-20241009-040607.png

Board bring up Status

Please update test plans/board documentation!

WATER CONTROLLER

Board Name

status

blockers

plan going forward

Board Name

status

blockers

plan going forward

GPS Breakout

  • Alternative GPS selected

 

https://uwarg-docs.atlassian.net/wiki/spaces/Meetings/database/2752839681?entryId=e839dcd8-defc-42f1-8280-8e2c21fbeea5

Single Servo Driver

  • electrical validation done. need firmware. 3x boards all ready to go right now

  • Maybe make spares since we are using all we made?

 

https://uwarg-docs.atlassian.net/wiki/spaces/Meetings/database/2752839681?entryId=726878aa-bcb8-4728-9eed-18483cfb5c94

6s Power Module

  • More testing from Andrew in the coming week when diodes come in

  • Perform High Current Test

  • Power rails working

  • Still waiting for Firmware

 

https://uwarg-docs.atlassian.net/wiki/spaces/EL/database/2752839681?contentId=2752839681&entryId=6ff0eee5-076a-4fc0-8ac4-9c443f2b18ab&savedViewId=e940bf55-85b8-4360-bd56-24aa837d4391

 

12-5V @ 4A Buck + ELRS RX

@Kenny Na Assembling and Validating

  • 3 boards fully assembled

  • Continuity testing w/DMM

  • terrified to power the board

 

https://uwarg-docs.atlassian.net/wiki/spaces/EL/database/2752839681?contentId=2752839681&entryId=249937d5-3a30-4c61-9927-8dedf4414d40&savedViewId=e940bf55-85b8-4360-bd56-24aa837d4391

Water controller

  • Boards Assembled

  • Validated Electrically

  • Ready to be integrated

 

https://uwarg-docs.atlassian.net/wiki/spaces/EL/database/2752839681?contentId=2752839681&entryId=41d6f3f2-d44e-41d5-bfe5-6edc9db1c513&savedViewId=e940bf55-85b8-4360-bd56-24aa837d4391

Peggy 2/Comp Updates

  • @Jerry Tian For Peggy 2

  • Water controller making (prob in more detail above)

    • Will install Dec 13 afternoon lol (after I finish finals)

  • Comp relevant PCBAs

    • Water controller

    • Water controller Rev 2

    • LED REV 4

    • Tracking antenna controller rev2

    • Unified VTX - descoped from this comp cycle

    • Single servo driver

    • Pi interface rev c

  • Big push now is for Dec 14 flight test

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

  • The below boards should be included

    • 6S servo module rev 2 - assembly next term

    • Single Servo Driver - waiting on EFS

    • 6S power module - in validation @Andrew Chai for details

      • High current test

      • POR for first flight of eclipse next term.

    • 24-5V buck - redundant power supply

    • @Jerry Tian Interested in harness diagrams?

      • yes all of them

    • Looking for diagrams of where things will be mounted from mech

    • CAN Integration 2025

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

    • @Kenny Na Layout Design

    • New modem, different SIM TVS, back to making routing progress

    • Modem wasnt on our bands - better for europe and asia

    • Chillin for beginning of term order

    • Reviews are appreciated now

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

    • @Ethan Abraham& @Andrew Chai

    • Pending layout review - basically done

    • Room for optimization

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

    • @Nolan Haines Individual Contributor

    • Target for beginning of term order

  • 12S Pre-Charge Controller Module

    • @Robert Tang , @Kevin Li

    •  

  • 3S ESC

    • @Kenny Na, PM @Daniel Puratich

    • Stalled for 12-5V Buck + ELRS RX bringup

    • Stalled for USB-C Sink bringup

    • Stalled for layout on RPi Interface Rev. C

    • houston ESCs? - 3s or 6s batts?

    • Wait for new motor selection?

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

    • @Ryan Scomazzon

    • Forgot to check connector at work

    • Still open for anyone who wants to help, dm me

    • Suggestion from @Kenny Na - look into ethernet? - Power rating?

      • This came up before but was ditched. Look into why? There may be a conf doc from sept 2023

  • ELRS Gemini Testing/Rev 2

    • @Ahmed Osman

    • is this still going ?

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

  • @Ian Van Den Steen

 

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

  • @Tim Gu

  • Did some research on designing/working with boost convertors

  • Getting started on calculations

    • Input current may be around 90-100A (very rough estimate)

    • How much current is too much (to the point where we can’t make this ourselves)?

  • Looking into COTS options for buying one

    • There are some 12-24V 50A DC/DC convertors that seem promising at first glance, will dig deeper and document updates

  • some ideas:

    • If we don’t charge 4 batteries at once the input current will probably be a lot lower

    • maybe use multiple boost convertors (like a multiphase buck)?

 

Water System Controller rev 2 - Electrical - WARG

  • Working on schem still

  • After this weekend will be on hold till after finals

  • Target for start of term board order

Action Items

  • Make source of truth for board priority and add more single servos to it

  • Check up on elrs status

GOOD LUCK ON EXAMS 🙏🙏🙏