SKU: 52490755380

Happymodel Crux35 ELRS V3 Analog 4s Long Range Ultralight Drone

Sale price$90.73 Regular price$100.81
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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4

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Description

Happymodel Crux35 ELRS V3 Analog 4s Long Range Ultralight DroneThe new ELRS V3 version comes with CrazyF411 ELRS AIO flight controller built in UART ExpressLRS v3 receiver. CRUX35 is an ultra lightweight 3. 5Inch FPV Freestyle Drone, the weight of the whole drone is only 87g for the analog version and 108g for the digital HD version. The Crux35 series drone uses Happymodel EX1404 high efficiency motors and HQPROP 3. 5 inch three blade propeller to ensure the largest thrust to weight ratio under the most efficient

The new ELRS V3 version comes with CrazyF411 ELRS AIO flight controller built-in UART ExpressLRS v3 receiver.

CRUX35 is an ultra-lightweight 3.5Inch FPV Freestyle Drone, the weight of the whole drone is only 87g for the analog version and 108g for the digital HD version. The Crux35 series drone uses Happymodel EX1404 high-efficiency motors 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.

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The analog version is equipped with CADDXFPV Ant camera. The receiver version can be SPI Express LRS or SPI Frsky (S-FHSS compatible) for choose. The version in this product listing is the ELRS receiver.

Key Features

  • Ultra-lightweight 3.5-inch BNF FPV Freestyle Drone
  • OVX303 5.8Ghz VTX
  • Integrated ExpressLRS SPI 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

Specification

  • Brand: Happymodel
  • Model: Crux35 Analog / Crux35 HD
  • Wheelbase: 150mm
  • Weight: 87g ( Analog); 108g ( HD)
  • Size: 130mmx130mmx45mm(without propellers)
  • Version Optional: Analog / HD
  • Receiver optional: SPI ExpressLRS 2.4GHz / SPI Frsky D8/D16 (S-FHSS compatible)
  • Analog version Ant+OVX303 VTX
  • Flying time: 9min~15min 4s 750mah battery

Detailed Component Specifications

Motor Mode: EX1404
KV options: KV3500
Configu-ration:9N12P
Stator Diamter:14mm
Stator Length:4mm
Shaft Diameter: Φ1.5mm
Motor Dimension(Dia.*Len):Φ15mm*15mm
Weight: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

(ELRS Version)

MCU:STM32F411CEU6 (100MHZ, 512K FLASH)
Sensor: MPU-6000(SPI connection)
Mount pattern: 20x20 M2Size:32*28*9mmPower supply: 2-4S Lipo batteryBuilt-in 12A Blheli_s ESC eachBuilt-in Betaflight OSD(SPI Control)
Built-in SPI ExpressLRS 2.4GHz receiverBuilt-in 5V 1A BECFlight controller firmware target: CRAZYBEEF4SX1280
Flight controller

(Frsky version)

MCU:STM32F411CEU6 (100MHZ, 512K FLASH)
Sensor: MPU-6000(SPI connection)
Board size: 28.5 * 28.5MM
Power supply: 2-4S battery input (DC 8V-17V)
Built-in 20A(each) Blheli_S 4in1 ESC Dshot600 ready
Built-in Frsky D8/D16 SPI receiverBuilt-in 2.4G Power Amplification
Built-in Betaflight OSD(SPI Control)
Built-in Current meter
Built-in 5V 1.5A BEC
Built-in voltage detectionFirmware target: MATEKF411RX
Onboard 4in1 ESC MCU upgraded to EFM8BB21
Power supply: 1S LiPo/LiPo HVCurrent: 5A continuous peak 6A (3 seconds)
Support BLHeliSuite programmable
Factory firmware: O_H_5_REV16_8.HEX
Default protocol: DSHOT300
Onboard SPI ExpressLRS 2.4GHz Receiver

(ELRS Receiver version)

Packet Rate option: 25Hz/50Hz/150Hz/250Hz/500Hz
RF Frequency: 2.4GHzAntenna : SMD antenna
Telemetry output Power: <12dBmReceiver protocol to flight controller: CRSFCould bind with Happymodel ES24TX , ES24TX Lite, ES24TX Slim and DIY 2.4GHz ELRS TX module
Onboard SPI Frsky 2.4GHz receiver (Frsky Receiver Version) SPI BUS receiver
Frsky D8/D16/EU-LBT/, Futaba S-FHSS switchable on Betaflight
Channels: 8ch/16chDual antenna
Failsafe support
No ground interference ( Transmitter and receiver 1 m from the ground): 400m
Caddx FPV Digital HD Camera Nebula Nano Kit

(Digital HD version)

Weight(camera included]: 24g

Antenna: 2.3g

Dimensions: Vista Kit 30×29×13mm

Camera 14×14×21mm

Operating Frequency: 5.725-5.850GHz

Transmitter Power[EIRP]: FCC/SRRC/MIC:<30dBm

CE:<14dBm

Min.latencylend-to-end) 720p 60fps:32ms

Max.Transmission Distance FcC/SRRC: 4km

CE:0.7km

lnput Power: 7.4-26.4V

Power Output: 25mW/200mW/500mW/700mw

Goggles : Work with DJl goggles

Camera Sensor: 1/3"CMOS

Lens: 2.1mm,f/2.1

Shutter: Rolling

shutterFOV: 142°(D);122°(H);75°(V)

LHCP antenna

Caddx ANT 1200tvl camera

(Analog version)

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 5.8Ghz VTX

(Analog version)

Model: OVX303

Frequency: 5.8G 40CH

Transmitting Power: 0/RCE/25mw/100mw/300mw

Power supply: DC 5V

Current (5v): <650ma (300mw)

Weight: 1.5gram without antenna

Included

  • 1x Crux35 Frame
  • 1x Analog FPV Camera Caddx Ant
  • 1x Happymodel OVX303 5.8G analog VTX
  • 4x Happymodel EX1404 KV3500 brushless motor
  • 1x HQProp T3.5X2X3Grey (4cw+4ccw)
  • 1x Screw Driver
  • 1x Buckle for battery
  • 1x ELRS X1 flight controller

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 52490755380

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taylor
Fort Morgan, US
★★★★★ 4
Good quality
Color: Dark Mocha, Size: 3 Panel
Was shorter than I realized, ended up returning. Product was good quality however
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 18, 2025
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Verified Purchase
Lucas Satterfield
Draper, US
★★★★★ 5
Light Weight and Affordable Office Decor
Color: Dark Mocha, Size: 3 Panel
I always read reviews before purchasing- so I understood this was going to be a small, light weight tri-fold. It is not meant to be extremely durable- so it wouldn't be great to have around children or animals - but is functional for certain situations. I use this as a divider between my work from home desk and my bed during the day and it is the perfect tool to keep my brain in "work mode", and not sleep mode.
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Reviewed in the United States on April 24, 2026
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Verified Purchase
Katie Green
Cuba, US
★★★★★ 5
Love them! Well made!
Color: Dark Mocha, Size: 3 Panel
Very nice product, nice color. Just too short. Will be sending back for a taller one to match other 2 I ordered! Great customer service!
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Reviewed in the United States on March 12, 2026
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Verified Purchase
Suz
Boise, US
★★★★★ 5
Looks good and is stable
Color: Dark Mocha, Size: 3 Panel
This is perfect for my needs. I have a large bathroom window that anyone can see the toilet when the window is open. The weather is so beautiful here for many months and I hated keeping that window closed. This screen is perfect. It covers the open part of the window so no one can see in but the air flows freely (the glass is frosted so it is not a problem when closed). The screen is very lightweight and came fully assembled (which is amazing anymore). It feels stable and I think it is a good value for the money.
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Reviewed in the United States on July 20, 2025
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Landelipipi
New York, US
★★★★★ 1
Not sturdy
Color: Dark Mocha, Size: 3 Panel
Not sturdy. Does not stand.
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Reviewed in the United States on February 19, 2026

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