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CineRat 02 Parts List and 3D prints

Till Blaha edited this page Aug 28, 2024 · 1 revision

Off the shelf parts

Current build:

Part id Part Name Source Comment
Motors Emax Eco 1407-4100KV Droneshop For 6S, use 2800KV version?
Props 3x3x3 HQProp DP-3x3x3B-PC Droneshop
Props 3x2.1x3 GemFan WinDancer 3028-3 Droneshop Performed similar, and more stable
Bat Tattu FunFly 4S 100C 1300mAh Droneshop
Frame Ethix CineRat HW parts Droneshop
FC Matek FC H743-SLIM V3 Droneshop
ESC Aikon AK32 35A 4-in-1 Droneshop
GPS + Magneto Foxeer M10Q-250 Droneshop Untested
Buzzer Piezo Buzzer - Active Kiwi electronics
Computer Raspberry Pi Zero 2W Raspberry Pi store
SD Card Conrad? Check list of known-good SD cards

Lots of spacers and M3 screws for the flight control stack mounting.

A note on SD cards

Many micro SD cards won't work (nicely) with blackbox because of latency/thruput/etc. Blackbox can only handle 4GB anyway, so invest in 64GB cards makes no sense anyway. Latency and speed over size!

Known to be good by our group:

  • Sandisk Extreme PRO 32GB Class 10 UHS-I <-- the absolute best. Logging loads at 1kHz possible, little corruption
  • Samsung EVO 32GB Plus Class 10 UHS-I <-- but not as good as Sandisk Extreme PRO
  • Sandisk Extreme 32GB Class 10 UHS-I <-- but not as good as Sandisk Extreme PRO

Known to be good by betaflight devs (https://betaflight.com/docs/development/Blackbox#microsdhc)

  • Transcend 16GB class 10 UHS-I
  • Sandisk Extreme 16GB Class 10 UHS-I
  • Sandisk Ultra 16GB (but not 32GB!)

Known to be bad:

  • Generic 4GB Class 4
  • Sandisk Ultra 32GB
  • Integral 32GB

Make sure you follow the procedures in CineRat -- 04 Software Installation and Setup#Optional -- INDIflight blackbox for logs.

3d prints

Find STL and Gcode below.

STL files

Part Amount STL Note
RPi Mouting 1 PiAdaptorV17.stl
Optitrack Clip 8mm 2 OptitrackClip8mmV3.stl For cable management and bottom side optitrack mounting (use spherical markers)
Optitrack Clip 10mm 2 OptitrackClip10mmV3.stl Idem
Optitrack Motor 3 or 4 OptitrackMotorM5v4.stl Mounts onto M5 nuts of the motors and can be covered in reflective tape
Bad idea: Optitrack Top 2 and 2 symmetry OptitrackTopV2.stl
Optitrack Front 1 OptitrackFrontV3.stl
Optitrack Front with Camera Mount 1 OptitrackFrontCamV2.stl
Bumper Front 1 and 1 x-symmetry BumperFrontLeftV2.stl
Bumper Rear 1 and 1 x-symmetry BumperFrontRightV2.stl

Print instructions

Print with PLA, heat bed to 60deg for adhesion on Ultimaker 3 and Creality Ender Pro 3. Infill about 20%. Initially I did 2mm wallthickness, but I don't think that's necessary.

Use buildplate adhesion; some parts are small!

GCode

For the BambuLabs X1 I made some gcode that should be plug-and-pray.

Part Printer Estimated Time File
All parts Bambu Labs at MAVLAB 1:30h BambuLabs_CineRatBumpers.3mf
All parts except bumpers Bambu Labs at MAVLAB 0:50h BambuLabs_CineRatNoBumpers.3mf