Review: Holybro Kopis 2.5″ Cinewhoop for Naked GoPro and Insta360 GO

Review: Holybro Kopis 2.5″ Cinewhoop for Naked GoPro and Insta360 GO

The Holybro Kopis 2.5″ Cinewhoop is a compact but excessive efficiency FPV drone designed to hold gentle weight HD cameras such because the bare GoPro and Insta360 GO 2. I find it irresistible’s pre-built, however is it higher than DIY? Let’s discover out.

Wondering what’s a Naked GoPro? It’s mainly a stripped down GoPro in a plastic case, take a look at my information right here: https://oscarliang.com/naked-gopro/

You can get the Kopis Cinewhoop from:

Batteries will not be included, take a look at my roundup on what batteries it is best to get, the really helpful dimension for the Kopis is 4S 650mAh to 850mAh.

R-XSR receiver is just not included, you will get it right here:

Get some spare props as nicely, they’re Gemfan D65 5-blade:

It contains the next equipment:

  • 1x Kopis cinewhoop2.5” FPV racing drone
  • Nebula Pro Vista Kit (Optional)
  • 1x Naked GoPro digicam mount
  • 4x D63-5B Propeller
  • 2x Propeller guard
  • 1x Carying case

  • FC: Kakute F4 V2 Mini
  • ESC: Tekko32 F3 4in1 35A mini ESC
  • Nebula Pro Camera with Vista Air Unit (DJI HD digital FPV system)
  • Motor: T-Motor F1404 3800KV
  • Propeller: Gemfan D63-5B
  • Equipped with Buzzer
  • XT30 LiPo Connector
  • Wheelbase (Diagonal motor to motor distance): 105.5mm
  • Arms thickness: 3mm carbon fiber
  • Weight:
    • 157g Without battery and GoPro
    • 234g With 4S 650mAh, w/o GoPro
    • 262g with 4S 650mAh and GoPro
  • Recommend battery (Not Included): 4S 550~850mAh

Flight Controller Specs:

  • MCU: STM32F405RGT6 32-bit processor
  • IMU: MPU6000 (SPI)
  • Barometer: BMP280
  • USB VCP Driver (all UARTs usable concurrently; USB doesn’t take up a UART)
  • 5 {hardware} UARTS (UART1,3,4, 5, 6)
  • Supports serial receivers (SBUS, iBus, Spektrum, Crossfire) solely. PPM and PWM receivers will not be supported.
  • 128 Mbit reminiscence for Blackbox logging

Firmware Related:

  • Betaflight Firmware 4.2.6
  • Board: HBRO/KAKUTEF4V2(STM32F405)
  • BLHeli_32 Firmware 32.7
  • ESC firmware goal: Tekko32_F3_C

It is available in the identical zipper smooth case that they use for all of their RTF FPV drones. A little bit overkill for this tiny quad, however that might do 🙂

Note that there isn’t a analog model, the Kopis 2.5inch Cinewhoop is designed for the DJI Vista and Caddx Nebula Pro digicam.

The Nebula Pro is a brand new model launched in early 2021, I’ve examined it and it’s simply pretty much as good as the unique DJI digicam.

Out of the field, you may see there are two cables not related to something, they’re for the R-XSR receiver and the Naked GoPro.

It comes two 3D-printed TPU mounts for various HD cameras: one for the Naked GoPro (BetaFPV model), and the opposite for the Insta360 GO digicam.

Unfortunately Holybro simply missed the discharge of Insta360’s newest GO 2 which is a barely larger digicam than the GO. I hope sooner or later they might present the TPU mount for the brand new GO 2.

It doesn’t include radio receiver, but it surely’s pre-configured for the Frsky R-XSR, mainly plug and play. I’d usually use Crossfire, but it surely’s simply simpler to make use of the R-XSR on this case, so I don’t must take the quad aside and re-solder the wires.

You do nonetheless have to discover a spot to mount the RX and its antennas, which isn’t at all times straight ahead on a whoop this small. This is how I do it.

The 3D printed components are a number of the nicest high quality I’ve seen from an RTF drone. It would have been nicer if the GoPro mount was extra inflexible, I discovered it wobbles a bit after I push it.

Like I stated, they already solder the cable for powering the Naked GoPro, additionally plug and play.

However I like to recommend eradicating the yellow wire which is supposed for controlling the GoPro’s recording out of your flight controller. I discovered this to be fairly buggy and unreliable. To begin/cease recording, I simply use the buttons on the GoPro.

Connectors for the FC and DJI Vista are simply accessible, very user-friendly design.

The Kopis Cinewhoop makes use of a 2-board stack the place the FC and 4in1 ESC are separate, not the extra frequent Toothpick AIO (multi functional) board design. This permits them to make use of extra highly effective and superior ESC – certainly it’s a BLHeli_32 ESC which is rated for 35A. Such highly effective ESC isn’t seen in 2.5″ whoops, for comparability, my Umma95X solely makes use of 12A BLHeli_S ESC 😀

There is a large 35V 1000uF capacitor soldered to the facility for noise filtering.

Removing the froth (held in place by double sided tape), reveals the 4in1 ESC. Solder joints look good.

One factor that’s lacking in lots of of those whoops are buzzer, however that’s out there within the Kopis 2.5-inch Cinewhoop, simply behind the FPV digicam.

Here is the handbook, there’s information concerning the BEC board for the Naked GoPro, and the way to assemble the body.

Out of the field, the Kopis is operating virtually default Betaflight settings, so you need to set it up just about from floor up. Here is an inventory of issues I did earlier than my first flight.

1. Connect and Bind R-XSR receiver, and mount the antennas.

2. Activate Vista, and replace firmware from 1.05 to 1.06, so you should utilize 50mbps mode.

3. Bind Vista to your DJI Goggles.

Betaflight Configurations

4. UART 6 had SmartAudio chosen, undecided why they did that, however you may simply disable it, and allow “MSP” as an alternative. This is for DJI’s OSD and telemetry, e.g. displaying battery voltage on display screen.

5. Set your personal charges, right here is mine. I additionally wish to put a throttle restrict at 95% as a result of I don’t usually use full throttle on cinewhoops and that provides me a little bit extra throttle decision.

6. Other Betaflight settings:

Here’s my CLI dump after I’ve configured the quad, sorry I forgot to avoid wasting a replica of the unique CLI dump, so i don’t have it.

I didn’t change any BLHeli32 settings, however in case you might be curious here’s a screenshot of the settings in BLHeliSuite32.

And we’re prepared for take off 🙂

Time to speak about the way it flies. I will probably be evaluating the Holybro Kopis Cinewhoop to the Umma95X since they’re in the identical class. You can take a look at my construct log of the Umma95X right here.

Although the Kopis is just not tuned by Holybro, it nonetheless flies fairly nicely out of the field, no less than there isn’t a jello or oscillation by any means. Enabling RPM filter may need helped too 🙂

Thanks to the larger motors, it has much more energy than the Umma95X, extra management and it doesn’t have as a lot propwash when diving and doing slit-S. The Kopis is significantly heavier, but it surely’s feels extra secure in windy situation and due to this fact in my view extra appropriate for outside flying. And I’d say noise stage is about the identical.

I’m stunned that the Kopis truly gave me over 5 minutes of flight time when utilizing 4S 650mAh (I used to be doing flips as nicely, not simply cruising), you’re going to get even longer flight time with a 850mAh. With the Umma95X, I used to be solely getting round 4 minutes utilizing a 3S 650mAh (motors KV are rated for under 3S).

Only criticism I’ve is the GoPro digicam mount. It’s fairly versatile and so that you would possibly get some tiny wobbles when doing acro strikes. It doesn’t appear to be a difficulty although when cruising, the video will get smoothed out anyway utilizing Reelsteady.

There are benefits to compact cinewhoop builds just like the Umma95X, equivalent to its low profile, however I simply can’t suggest the Umma95X as a result of how tough it’s to construct and restore. There are many choices which might be designed to hold the bare GoPro, such because the Kopis 2.5″ Cinewhoop, you actually don’t must construct it from scratch.

As ordinary coming from Holybro, the {hardware} and total design of the Kopis Cinewhoop are simply astounding. I want Betaflight and RPM filter have been configured in manufacturing unit, and if the GoPro mount was a bit extra inflexible, it could have been an ideal whoop for me.

I most likely have to revamp the TPU mount in some unspecified time in the future to make it extra sturdy.

It’s nonetheless going to interchange my Umma95X. Yes, the Holybro Cinewhoop is heavier, however flight efficiency and flight time are each higher. Most importantly it’s MUCH simpler to work with, no less than I don’t must take it aside simply to attach the FC to Betaflight 🙂

And it’s simpler to work on the GoPro too, like connecting the contact display screen which isn’t doable with the Umma95X with out taking the entire quad aside.

You can get the Kopis Cinewhoop from Banggood