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Description
Happymodel Crux35 Analog ELRS V2 2.4GHz 4S with Caddx Ant Camera Micro Freestyle FPV Drone - BNFCRUX35 is an ultra lightweight 3. 5Inch FPV Freestyle FPV Racing Drone, the weight of the whole drone is only 87g for the analog version. The Crux35 drone uses Happymodel EX1404 high efficiency motor and HQPROP 3. 5 inch three blade propeller to ensure the largest thrust to weight ratio under the most efficient premise, which can bring you a smooth Freestyle flying experience. The analog version is equipped with CADDXFPV Ant ant camera. The receiver
CRUX35 is an ultra-lightweight 3.5Inch FPV Freestyle FPV Racing Drone, the weight of the whole drone is only 87g for the analog version. The Crux35 drone uses Happymodel EX1404 high-efficiency motor and HQPROP 3.5-inch three-blade propeller to ensure the largest thrust-to-weight ratio under the most efficient premise, which can bring you a smooth Freestyle flying experience.
The analog version is equipped with CADDXFPV Ant ant camera.
The receiver version is the UART ExpressLRS ( SPI version is discontinued )
Recommended (Not Included): Battery 4S 14.8v 750mAh to maximum 1100mAh.
You can choose from our Compatible 4S Lipo Packs here
Check out The HappyModel Crux35 Frame and Parts Collection, all our Analog BNF Drones and the rest of our Happymodel Products!
Features
- Ultra-lightweight 3.5-inch BNF FPV Freestyle Drone
- Integrated ExpressLRS UART receiver
- High efficiency EX1404 power system
- Can be equipped with Naked Gopro or SMO4K
- Support 3-4S battery 4S 750mah battery is recommended, maximum support 4S 1100mah
Specifications
- Wheelbase: 150mm
- Weight: Crux35 87gram
- Size: 130mmx130mmx45mm(without propellers)
- Receiver: UART ExpressLRS 2.4GHz
- Caddx Ant Camera +OVX303 or OVX306 VTX
- Flying time: 9min~15min 4s 750mah battery
Motor
- Model: EX1404
- KV options: KV3500
- Configu-ration:9N12P
- Stator Diamter:14mm
- Stator Length:4mm
- Shaft Diameter: Φ1.5mm
- Motor Dimension(Dia.*Len):Φ15mm*15mm
- Weight(g):9g
Propellers
- Propeller Diameter: 3.5 inch
- Pitch : 2
- Blades : 3
- Material : Poly Carbonate
- Weight : 1.5g
- Hub Diameter : 10mm
- Hub Thickness:4.7mm
- Shaft :1.9/1.5/1.9mm
- Adaptor Rings : NO
Flight controller
- (UART ELRS Version)
- CrazybeeF411 ELRS
- MCU:STM32F411CEU6 (100MHZ, 512K FLASH)
- Sensor: ICM42688P or BMI270 (SPI Control)
- Mount pattern: 25.5×25.5 M2
- Size:32*32*5mm
- Power supply: 2-4S Lipo battery
- Built-in 20A Blheli_s ESC each
- Built-in Betaflight OSD(SPI Control)
- Built-in UART ExpressLRS 2.4GHz receiver
- Built-in 5V 1.5A BEC
- Flight controller firmware target: CRAZYBEEF4DX
Onboard 4in1 ESC
- MCU upgraded to EFM8BB21
- Power supply: 2-4S LiPo/LiPo HVCurrent: 12A continuous peak 15A (3 seconds)
- Support BLHeliSuite programmable
- Factory firmware: F-H-40
- Default protocol: DSHOT300
Onboard UART ExpressLRS 2.4GHz Receiver
- Packet Rate option: 25Hz/50Hz/150Hz/250Hz/500Hz
- RF Frequency: 2.4GHzAntenna plug: IPEX
- Telemetry output Power: <12dBm
- Receiver protocol: CRSF
- Default firmware version: ExpressLRS V3.0.1
(Analog version)
Caddx ANT 1200tvl camera
- Image Sensor: 1/3″ CMOS Sensor
- Horizontal Resolution: 1200 TVL
- TV System: NTSC or PAL
- IMAGE: 16:9 or 4:3
- Synchronization: Internal
- Electronic Shutter: PAL: 1/50~100,000; NTSC: 1/60~100,000
- S/N Ratio : >52dB (AGC OFF)
- Video Output: CVBS
- Lens: 1.8mm
- Min. Illumination: [email protected]
- Auto Gain Control: YES
- BLC: YES
- WDR: Global WDR
- DNR: 3D DNR
- Dimensions: 14*14mm(with bracket to 19*19mm)
- Wide Power Input: DC 3.7-18V
- Work Temperature: -20℃~+60℃
- Weight: 2g (N.W.)
OVX303/306 5.8Ghz VTX
- Model: OVX303/306
- Frequency: 5.8G 40CH
- Transmitting Power: 0/RCE/25mw/100mw/300mw
- Power supply: DC 5V
- Current (5v): <650ma (300mw)
- Weight: 1.5gram without antenna
Package Includes:
- 1 x Crux35 Frame
- 1 x CrazyF411 ELRS FC with UART ELRS
- 1 x Caddx Ant Camera
- 1 x Happymodel OVX303/306 5.8G analog VTX
- 4 x Happymodel EX1404 KV3500 brushless motor
- 1 x HQProp T3.5X2X3Grey (4cw+4ccw)
- 1 x Screw Driver
- 1 x Buckle Velcro for battery
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Best Dog (Puppy) Toy I've Found
Color: Orange
This is a fun toy for me as well as my puppies! When it arrived I opened it right away. I was anxious to get my Pup's playing with something that wouldn't require me to play with them. I put it down and it was charged and ready to go. I had no idea what to expect. All three of my Pups were interested in it. (Which is unusual because two of them are Shih Tzu's and don't pay a lot of attention to most toys.) It's safe and really cute to watch. My youngest pup had been playing all day and was tired when I finally took a photo. I can't tell if the video uploaded correctly but if it did you can see how much fun it was. It is very durable and can actually turn itself over and go across the floor. It charges fast and will last a day and a half or two depending how much it's been used. It does go to sleep if no one is playing with it. They furnish you with an extra top and a fresh "rope." I really appreciate how much customer service is done with this item. I will watch for more of their items to purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2026
★★★★★ 5
Buy 2 at a time for a fun experience
Color: Orange, Color: Orange
What’s better than 1 toy? Answer: 2 toys! I love using two at a time. More stimulation and fun! We use these to get all the energy out before nap time. They keep him occupied and running in two different directions. The rope part of the toy is the perfect size for him to grab onto. It came with a replacement for a wheel and rope and haven’t had to replace it yet. Toy has held up with daily play and still works perfectly.
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Reviewed in the United States on June 11, 2026
★★★★★ 5
How many dog toys have you bought that just laid on the floor unused?
Color: Orange
New husky has more energy than an entire pre-school - even being walked more than three miles a day wasn’t sufficient to drain her excess energy.
I threw the dice on this - and it’s AWESOME. Comes with an extra rope and an extra side piece. Rechargeable with a USB-C cable. When you turn it on, the blue LEDs flash, the entire device buzzes, bounces, and races back and forth across the floor. After a couple of days of uncertainty, my new husky LOVES this. She chases it around, grabs it by the attached rope and carries it from room to room.
After a short bit of activity, the toy goes into ‘sleep’ mode, until either the dog touches it again or a timer has elapsed, and then it fires up and starts buzzing and racing around the floor again.
From a full charge, the toy will keep your dog entertained all day. Bright orange color makes it much easier to find when it’s rolled behind the toilet (as it did this afternoon). Sturdy. Highly resistant to chew damage. If this one wears out or breaks, I’ll absolutely get another one.
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Reviewed in the United States on April 20, 2026
★★★★★ 4
Puppy interactive toy
Color: Orange, Color: Orange
It’s a great toy as it keeps my 5 month old puppy very entertained! It is pretty hardy and made of good material as she tries to throw it around and chew it. She does swing it around and the hard part will hit her. She doesn’t seem bothered by it tho lol good size and minimum noise
When I first introduced her to it she was a little scared but now she gets excited to play with it once it finishes charging.
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Cool toy. Fun for all
Color: Blue
A cool toy. entertainment for the dogs but more so for the dog parents to watch the dogs reaction. Comes with an additional rope just in case, which I loved. Only side note I would say is that the fast mood could be a little faster. My Golden retriever figured out the speed in less than 24 hours and now picks up the toy to try to chew it up, instead of chasing. With him attempting to chew on the toy in the small time I give him, there are no teeth marks yet…this toy appears to be durable. We play in short increments but enjoy the toy.
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Reviewed in the United States on May 29, 2026
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