Meeting Notes - Avionics - 2023-01-18

Owned by Yevgeniy Gorbachev (RIT Student)
Last updated: Jan 28, 2023 by Aaron Chan (RIT Student)

Date

Attendees




Goals

  • Get updates
  • Get comprehensive TODOs between now and JLC delievery

Discussion items

ItemWhoNotes
Board updates

Software

Aaron Chan (RIT Student) Akhil Devarapalli (RIT Student) Jonathan Russo (RIT Student) Chloe Clark (RIT Student) Brooke Leinberger (RIT Student) Nate Aquino (RIT Student) qcl4604 @Sebastian Martinez @Brian Tokumoto @Crispen Wendell @Torin Samples

Updates:
  • Sensor drivers written
  • Onboarding


TODO:

Radio Module

Dante Sivo (RIT Student) Jonathan Russo (RIT Student) 

Updates:

  • Added ESD to connectors
  • Added UART jumpers to GPS and a debug bus 
  • Schematic updates "beautified" 
  • Board Ready for review

To-Do:

Power Module

Updates:

  • Design voltage/current sense
  • Select passives for most ICs
  • Schematic is 60% complete


To-Do:

Power Module - Backplane<--checklist

Sensor Module

Louis Fleisher (RIT Student) 

Mary Dertinger (RIT Student) 


Updates:

  • Started reviewing some schematics with JIM
  • Continuing work on schematics

TODOs: 

  • Updated Block Diagram 
  • All Breakouts Ordered
  • Schematics Created 
    • MS5607 
    • BMP390
    • ADXL375
    • LSM6DSL
    • LIS3MDL
    • TMP117
    • SHTC3
    • W25Q128JVSIQ
    • Status LEDs
    • W5500 + Connector + LC Filter
    • STM32
    • Higher Level Sensor Schematic 
    • Full Board Schematic
  • Schematics Reviewed
    • MS5607 
    • BMP390
    • ADXL375
    • LSM6DSL
    • LIS3MDL
    • TMP117
    • SHTC3
    • W25Q128JVSIQ
    • Status LEDs
    • W5500 + Connector + LC Filter
    • STM32
    • Higher Level Sensor Schematic 
    • Full Board Schematic
  • Get I^2C Addresses for Sensors 
  • Board Layout Completed
  • Board Layout Reviewed
Autopilot Module

Ben Hyman (RIT Student) 

Updates:

  • Changed from Wago terminals to standard screw terminals for charge lines
  • Reduced from 4 to 2 charge lines
  • Did basic layout of charge lines
  • Fixed address lines to go to inputs on Vocore
  • Schematic is 90% complete
  • Posted GPIO default state question to Vocore forum

TODOs:

  • Schematic
    • Finish rest of backplane connector (GPIOs and LEDs)
    • Clean up schematic
    • Run ERC and make sure there are no design breaking errors
  • Layout
    • Placement of all components (really just one more charge line which is copying the one i've already done)
    • Route all signal traces
    • Route power traces/pours
    • Run DRC and make sure there are no design breaking errors

Connector spec


Idea 1: "Horned connectors" going sideways

  • Positively locking
  • Board-edge would look very neat
  • Board-edge would take up too much space - we have  130mm width, 60mm per board is not enough margin

Idea 2: Back to proper backplane

  • Vertical connectors on modules pass through slots in the sled, connect to the backplane
  • Sandwich the plastic sled by the PCBs
  • Screwing everything to a common sled is positively locking
  • Less wires means less integration hassle
    • Maintain ability to use cables
  • Need to specify connector offset on each module
  • Radio module needs to send SMA connectors through the  sled or out the short edge
  • Need to carefully solder connectors so they're not canted
    • Use a fixture?

Action items