@Ari Wasch

Support/Mentoring

✅

• Reviewing stuff

• Assisting with layout

• Continue Assisting with the boards

David Choi

DD Current Sense / Comms

✅🚹

Comms research updates?

@Logan Hartford

Lead

✅

• Placement for PDB base is done

• Mostly done polygons and traces

• Get polygons done, get it up for review

Melissa Jacobs

5V Buck

✅🚹

• Researching how to do board layout

• Start layout

Rayyan

17V Buck

✅

• Finished layout

• improve layout

@Rishith Bomman

PDB

✅🚹

Any updates on PDB Rev 4.1?

@Wolfgang Windholtz (Deactivated)

Science / Support

✅

@Yuchen Lin

DD Current Sense / Comms

✅

• Looking at network basics for comms

• look into comms basics

• schematic for current sense

• Rewire the drivetrain

• Wire the Arm

• Wire science mechanism

• Operational power consumption estimation for all major subsystems

  • Drivetrain

  • Arm

  • Science

• wiring--need to consult with mech

• All encompassing architecture diagram -Billy

• Design buck converters - Billy, Rayyan

  • Talk to Rishith

  • WeBench

• BLDC Motor controller - David

• Meetings

  • Bucks

  • Architecture

• Similar to what an FTDI chip does but in a circuit

  • Need to identify a use case for this

    • RS422 ↔︎ SPI to unify the comms

  • Should try and use a single comms protocol

• Making our own router

• New LED matrix board

  • Multiplexed

  • Firmware project

• Create layers for common IC/s components

• What is the bare minimum electrical system?

• What are all the all the ways we can achieve this?

• New requirements--Need to power:

  • Jetson - 17V, 10W-30W

  • Gimbal

    • Search up nominal voltage and current draw for gimbal motor

    • Zed2: 380mA @5V

  • Vector Nav - 5V, 250 mA

  • Anenna - 24V 1.5A

  • Pi - 5V 3A

  • What are the power requirements for each of these?

• Encoders need 5V, mostly a current ref

  • 20mA per encoder

  • 48-5V buck

• 48V to each motor

• Apparently the Odrive supplies 5V to the encoders so no need for a buck

Total SAR Power Requirments

Rayaan

• How can this be done?

• How easy of a project is this?

• 3/5 tough

• Use resistors divider board to validate basic functions

  • For checking over-voltage?

  • Hook up the cells to the BMS and test basic functions

• Someone has definitely done battery emulation before

  • google it

@Farris Matar (starting next week)

• With vs without the BMS

• What is the safest way?

• What is the most convenient way?

• Any concerns?

• Should always charge it using a battery charger

• Have the BMS hooked up as well

• Connector solution

• Put safety warnings, storage instructions etc

@Yuchen Lin

• Do we have time for a work session this weekend?

• Yes

Rishith

• What exactly does this consist of?

• What needs to be done to verify?

• Send a digital signal to the neopixels, bitshifts

• Just need to hit it with PWM to set the colour of the whole thing

  • arduino town

@David Choi / Rishith

/ @Farris Matar

• working on instability issue

  • Should be fine with one antena

@David Choi

II

Waiting on mechanical/firmware

II

Waiting on mechanical/firmware

III

Working on priority I comms first

II

Working on priority I comms first

PDB

@Rishith Bomman /

@Farris Matar / Rayaan

PDB Rev4 - Design and Assemble the PDB

Dec 19, 2022

• Performance testing complete

• Some small schematic and footprint issues across the board

• 17V performed well except on start up

• 5V is very noisey

HIGH

BMS

@Joshua Harper / @Ari Wasch / Olivia

BMS - Design and Assemble the BMS

Apr 19, 2023

• One BMS has been assembled

• Basic non-performacne and non-firmware tests have been done

• An off the shelf replacement is being sourced

HIGH

Comms

@Yuchen Lin / @Logan Hartford

Comms

Oct 31, 2022

HIGH

Science

Science - Assemble & Test

Apr 19, 2023

• Need one or two people to own the assembly and testing of the science boards and work with @Ivan Lim and @Wolfgang Windholtz (Deactivated) to ensure the board is ready for competition.

• Found two assembled boards but none of the parts if @Ivan Lim / @Wolfgang Windholtz (Deactivated) have any ideas please let me know. Otherwise we’ll just order more parts.

• @Ivan Lim / @Wolfgang Windholtz (Deactivated) Both of the assembled boards are missing a lot of parts, do the boards have a bunch of population options?

MEDIUM

SPI LVDS

@Farris Matar

SPI LVDS - Assemble and Test

Apr 19, 2023

• SPI LVDS Host boards should have been assembled

• SPI LVDS Peripheral parts and boards should be in the bay now, pending assembly

• Harnesses need to be ordered in order to wire them up together and do testing

MEDIUM

RS422

David Choi / @Farris Matar

RS422 - Assemble and Test

Apr 19, 2023

• @Farris Matar verified the design and was able to send data using the boards

• 3 Boards have been assembled and tested

MEDIUM

LED Matrix

LED Matrix 2022/23

Apr 19, 2023

• LED matrix has been located

• Should work, just needs power and a PWM signal

MEDIUM

Digital Display Current Sense Board

@Olivia Markham (Deactivated) / David Choi / @Yuchen Lin

Current Sense Display

Apr 19, 2023

• Currently in the schematic design phase of the project

LOW