Mech

Electrical

LED board

Daniel & Parker reviewing LED board rev 1.1

Nolan Haines

It’s replaceable with other things (COTS) if necessary

Can bypass issues on the 1.0 version if need be - Nathan Green

Follow up after meeting for who’s working on LED board. if not done by end of week need to start looking at COTS options

EFS

LED board

Owen Grimm Made it blinking

touch up connections with solder if one LED is not working consistently

• next steps:

  • flashing more boards

  • EE needs to wire them up.

If boot is too large get Nathan Green 's 200 byte code

Mech

Rangefinder mount

• TBD which side of the drone underbody this can be mounted to

• screws onto existing 30x30 pattern (60mm mounting)

  • go into one of the corners (avoid battery)

Electrical

Rangefinder Harness

• did not work on this (april 1st)

New rangefinder we got is UART (or I2C?)

Currently one on houston is Nathan Green 's own lidar

Need:

• location of rangefinder from mechanical

  • can just go on the side of the cabin that doesn’t open (bolted to underside of the drone’s plates). mount facing down

• EE can make a harness that supports it at the correct length

• EFS/ Anthony Luo to see if we need to split UART into ~~~

EFS

OFS?

• is worky? gg

Autonomy

Mech

• phone mounting to top of drone (case printing Nathan Green )

• Do we have TPU filament? - it works in the bambu printer. Yes.

Electrical

VTX Wiring

• Neel Patel shortened the harness

• noise still there? - actually it wasn’t bad, there was less noise than last weekend.

• looks fine now.

OSD did have issues still but it probably was due to channel conflict with the arm switch.

EFS

Autonomy

LTE Communication

Writing module to convert to JPEG now

Phone replacing the LTE hat? → Nathan Green

• samsung phone instead of LTE hat on the RPI. This might fix the LTE transmission dropouts. Don’t know what causes it - tried moving the antenna a lot, changing the frequencies.

  • ‘its a phone so it’s probably better at it'

  • anthony speculating about vibe being bad for the RPI telem LTE hat

  • also power dropouts: phone has internal battery, probably helpful

Mech

Gemini case

Up for review, review was sent this morning! will be printed following revision

https://discord.com/channels/776618956638388305/1221565078135115826

Please read the design document in this thread! (if you are interested in the case)

Electrical

ELRS Gemini PCB

XT30 Connector pinout on the pcb is wrong (5V and Gnd pin are swapped), but still fixable with harness

e.g. with XT60 connector:

we need a harness that runs

XT60M +ve ---------- XT30F -ve

XT60M -ve ------------ XT30F +ve

EFS

ELRS for comp

• Basic link stats working, potentially develop better logging system? Currently using Saleae Logic Analyser

• Still need to clean up loose ends

  • test fans

  • verify transmission power

Autonomy

Pathing

Changed the last command to be a land command. Should integrate pathing and auto landing script together.

• Heard some discussion about using spline waypoints (not sure if it is for task 1 or task 2) that can be easily integrated on autonomy side (already have the module ready)

  • instead of hard turns (small radius default)

  • this was task 1

CONOPS specifies we need to be within 5 meter radius of each waypoint…

Anthony Luo - splining would keep the drone where you want it

Mech

Pegasus 2.0

UPDATES:

• next cabin design next finalized, layups done on Friday

• arm connectors made, need to do minor work to finish them off

• new landing gear prototype parts made, assemble later this week, hand off actually 7th april will assemble new cabin.

• 8-11th april will get tubes/etc cut prior to exams, for peggy 2.

• Waterproofing - Conall Kingshott to test this next week I think

• Black latex ordered ordered for this

REMINDERS:

Before exams, peggy 2 should exist/ nearly exist. → beginning of next term is just testing! (will be handed off to EE to wire)

summer term starts May 6. We have 2-3 weeks of testing.

Electrical

EFS

Autonomy

Mech

Improvements

• Sheet metal for Yaw Servo upgrades currently in queue for waterjet

• Once Waterjet is complete, count to machine countersinks and assemble

Electrical

custom PCB

review in progress

Arduino antenna

PCB ordered

EFS

Arduino Tracking Antenna

A lot of stuff are broken due to a circuit short

• buck converter and ldo are dead

• Neo M8Q GPS dead – we have replacement

• BMX160 the IMU dead – no any 9-axis IMU replacement, we need to purchase some

• If we plug the FTDI cable into a laptop, the laptop would passout due to overcurrent protection – but we need it for transmitting Mavlink to the tracking antenna

• I don’t think we have confirmed that arduino survive from it

• what happened in more detail: RCA - Arduino Tracking Antenna

Autonomy