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HobbyPlus Speck-B FPV Kit for O4 and Fan — zdjęcie 1
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HobbyPlus Speck-B FPV Kit for O4 and Fan

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DorffMeister

DorffMeister

@DorffMeister_7295

An FPV kit for the HobbyPlus Speck-B FPV Kit for O4 using a 30mm or 40mm fan to keep the VTX cool.

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Źródło
Printables
Kategoria
RC & Robotics
Licencja
Creative Commons — Attribution — Noncommercial
SzczegółyPliki (1)Wydruki i komentarze (Wydruki: 0) (Komentarze: 0)Remiksy (0)Kolekcje (1)Powiązane


THIS IS THE NEW VERSION!  This no longer uses the Pavo Femto frame.

I'd been wanting to get an RC car to drive FPV. I decided to start small for driving around the house to harass the cats. I finally decided on the Hobbyplus Speck-B Brushless.

The mount is designed for an O4 (Lite) Air Unit Video Transmitter (VTX) with a Flywoo O4 Camera Housing (two screws, provides 18mm camera housing).

This design attaches the FPV mount with small cable ties (or similar) to the Rear Assembly so it can easily hinge up to work under the hood. 

Running the car with a fan is a must. You can run with a 40mm fan or use the provided adapter to use a 30mm fan.

The O4 VTX consumes significant power. I've chosen to make the car rear-heavy and make a spoiler to attach a 2s LiPo, such as the BetaFPV 2s 550mah - 850mah pack. To cushion the battery from the screws that hold down the new spoiler, I use a strip of the 3M Double Sided foam tape covered by a strip of Tesa Wire Harness tape (or anything similar).

Acknowledgements

The O4 Mount feature is is based on FirstBarni's model DJI O4 Camera Mount. Thanks for the helpful and easy to adapt design. I'm using it in another FPV kit that is coming soon (for the Traxxas Mini XRT).

Printing Notes

  • I believe I've had better luck printing in PETG or PLA. With the mount TPU seemed introduces additional vibration.

  • The main mount needs to be printed with supports. I'd recommend printing at 45 degrees, as distributed.

  • The other models should not require supports.

Other Notes

  • This requires a custom wiring harness. I'd suggest using an O4 Armer will significantly simplify wiring.

  • There is space in the hinge to pass a power wire to the motor.

  • Mounting the O4 can be a pain in the tight space. Consider the stack screws both from the top or the bottom - both configurations work but one might be easier for you.

  • Originally I used the car's small LiPo for the motor, but I now wire the ESC directly to the external lipo.

  • I use four layers of 3M double-sided tape between the front of the mount and the car top.

  • I use a 4" rubber band to help hold the mount down

  • You will see two boards in my photos. The second one is a BetaFPV F405 2s-3s fightcontroller. I am  currently using this for O4 Arming, OSD, etc. using ArduRover.

Parts used or recommended