Tom Chiu

From last weeks EE meeting:

• Majority of technical details related to choosing voltage divider values into ADC figured out after taking into account the equivalent circuit in the ADC that contributes to the input impedance.

• Finishing up LTspice simulation to try to validate proper equivalent input impedance after taking into account the shottky diode and low pass filter.

• Still trying to figure out pros and cons in deciding to put RPP across the input voltage from the batteries or just the input into the 5V and 12V buck regulators.

Daniel Puratich to follow up!

Derek Tang Anthony Luo

No test plan yet

One board is tested and ready at least

Derek was able to connect two gemini boards together and saw it was receiving some packets, but in mission planner it didn’t show up properly.

• Derek looking into crossfire protocol, ardupilot integration painers.

  • CRSF is uart !

• Anni able to provide guidance

• Hardy somewhat on it as well

• will need to connect to a telemetry port

May need to order more ELRS receivers

Conall Kingshott Nathan Green

Paused, some chat

Potentially this isn’t happening for this competition cycle especially because we need to have time for testing

Will still be usable for manually pointing antennas toward drone

Maybe smaller antenna tracker for VRX only, using servos and 3d printing

Potentially use the mini-pix and a random GPS to try and make it work

We may not be line of sight when landing for task 2

Tall pole maybe nice? maybe doable? good to have! doesnt need to be too hard :d

Nolan Haines Hardy Yu Michael Botros

Stick with current architecture

Goal was have whole thing done end of term

Schematic is getting close!

overcurrent and input protection completed

• Michael Botros popping off here

connectors need cleanup

• Hardy Yu has been busy on this

• Hardy very busy

maybe add some bright LED for low batt?

• currently it’s a smaller LED

features are implemented in schematic

review needs to happen as well

hopefully moving into placement end of this week

sd card Yuchen Lin Stanley Tang

• Working on pin conflict to support SD card for logging

• trying to use sdmmc still

• need to make some updates to make this work

Arduino Tracking Antenna EFS

• Ayoung Eun Aryan Kashem

• currently working on Arduino version of the tracking antenna

• Idea : is mostly off the shelf, quick iteration, and can test the tracking antenna algorithm

• planning to port algorithm

Ayoung Eun Aryan Kashem

• Using to arduino

• in drafting stage of project

• planning to use Arduino Mega that’s sitting in our bay

• Implementing existing algorithm from STM32 version

  • https://github.com/UWARG/TrackingAntenna2023/blob/main/TrackingAlgorithm/Src/Tracking_Antenna_Singleton.cpp

• NeoGPS, Curie IMU, XBee and Servos Libraries will be used

• Ideally proof of concept with Houston flight test by end of term

• if done and well tested before february it’s up for consideration to add in custom hardware

• can whip stuff up with Ardu

• Anthony Luo Nathan Green next term will be avail to help

• Winter will be cold 🧊

Alex Yang Amy Hu

Collected some data in past flight

• didn't get many images in some

• low voltage warning, temp issue

Tong Zhang Amy Hu Mihir Gupta

Plan to get drone telemetry

Trying different image encodings

• see decision matrix

Arunav Munjal Amy Hu

CSV for WRESTRC should be ready to flight test on weekend Dec 2nd

Smile Khatri

new camera mount is working!

Hardy Yu Yuchen Lin Anthony Luo Daniel Puratich

Current 6S battery

• We currently have four that are perfect (that we’ve been using this term)

• we have other ones that are much worse performance and are labelled, Anni measured them to be sure.

Remaining Testing Goals before end of term

• end to end sensors (all of which can be tested in ground)

  • Gemini

  • Video over LTE

  • Calibrate OpflowOptical Flow

  • Monster mount offsets (

    • for rangefinder and

    opflow)

    • Optical Flow

• Four vs Six Batteries test (all require test flights)

  • Houston Autotune

    • completed last weekend, see links above

    • During roll autotune did not observe much circling

  • Pegasus Autotune

    • pay attention to weather conditions

  • Pegasus Four Battery Endurance

    • Autotune would be best but its too much time :d

    • Could do this before autotune just to get some values

  • Pegasus Six Battery Endurance

Nov 25th

• same day as open house

Nov 26th

Remaining possible flight dates for this term:

• Dec 2nd

• Dec 3rd Running a flight test will be challenging on this day due to the open house

  • bay will be full of people this day!

• Should make sure either Conall Kingshott or Smile Khatri are avail to put it back together in addition to an EE lead/member for the heatshrink

• Need to test controls and telemetry before then as well!

• No flight test on Nov 25th

Nov 26th

• more autonomy image collection flights

• No pegasus flight

Dec 2nd

• Ready to test Autonomy CSV for WRESTRC

  • must be on this day because WRESTRC required and this is only day we have it booked

• Hover test on four good batteries

  • hoping for 30 mins flight time on this

Dec 3rd

• pencil in for possible LIDAR flight depending on how things go!

No more available testing dates this term so gg team!

Megan Spee Anthony Luo Daniel Puratich Georgia Vachon Westerlund

The beginning part is a good example

Early Dec is soft deadline, Anni will be sweating on it

Georgia has been popping off

Feel free to pullup and spam some bs in it, dont worry too much :ddddd