After a lot of design iterations, 3D printed and carbon prototypes I proudly present my very own take of a "Cinewhoop".
The Pathfinder is designed to carry a Gopro Hero (7) for extra super juicy and smooth video, made of carbon fiber, TPU (and PLA). The bottom and top plate are meant to be cut out of 2mm carbon fiber plates (1.5mm will work as well), the ducts consists of a TPU housing with TPU inserts.
As of today it still is a work in progress and will very likely see a few (slight) changes to eventually loose a few grams.
At this moment I do NOT sell the frame or a RTF Version, this is meant to be an open source project and anyone can build its own, however I'm open for Inquiries for selling units, otherwise it is not allowed to sell parts of this design.
I choose to go with TPU ducts to make it less dangerous flying around soft targets, PLA works as well, looks better because its stiffer but also is easier to break,
now obviously this is not meant to be a flip flop freestyle drone but rather a smooth, slow flying cinematic whoop. If you have access to a CNC machine I totally would go and use soft foam instead of TPU or PLA. (If you're good with handling a foam cutter I'd imagine that would work well for foam as well..)
- 3 sets of 20x20 mounting holes
- 1x 30.5x30.5mm mounting pattern in the middle (plus the 2x 20x20)
- ability to mount 1x a 30x30 stack along with the DJI Air Unit
- Micro Cameras ONLY! (Yes the DJI Cam is a very tight fit and might require to use a spacer for the front of the top plate)
As per request, there is now 3 different sizes for the ducts included:
- standard, 20mm ducts
- duct_30 + foam_30 for 30mm tall ducts
- duct_40 + foam_40 for 40mm tall ducts
Gopro Hero 7 mounts are available in 5/15 and 30° angle, with T-Antenna style mounts, FPV camera mounts from here and VTX antenna mount from here.
I found these settings to work very well, giving more than enough strength and still be somewhat lightweight.
- TPU/PLA with 1-5% Infill (ish)
- Print the parts upside down, no support required.
I personally recommend using the Mamba 1408 2800KV (6S) motors with the Mamba F722 Mini Flight Controller/ESC stack because it turned out to be reliable and offers enough features. For motors, anything above 1408, like 15xX is probably a good idea. Just keep in mind, as with any drone, especially whoops, the lighter the better. As for the FPV camera I'd either recommend using either the Runcam Nano 3 or the Runcam MicroEagle .
3" ducted props, best to use cut down 4/5 inch props dremel tool or get the really good and perfectly fitting HQ Cinewhoop Props
The finished frame with my Hardware recommendation, without Gopro (and mount) an no battery is about 300-340g, depending on materials and print settings used.
Build can also be found here at RotorBuilds.
My own setup gets around 4 minutes of flight time and is at around 550g AUW including a Hero 7 Black and a 650mAh 6S pack, here is a short video of it in action: https://www.youtube.com/watch?v=QMZxvzBedBY