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 serials drone use 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.

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:
Brand: Happymodel
Product name: Crux35
Wheelbase: 150mm
Weight: Crux35 87gram
Size: 130mmx130mmx45mm(without propellers)
Receiver : UART ExpressLRS 2.4GHz
Camera and VTX :
Analog version Ant+OVX303 or OVX306 VTX
Flying time: 9min~15min 4s 750mah battery

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(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(UART ELRS version)
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 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: 0.001Lux@F1.2
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 OVX306 5.8Ghz VTX (Analog version) Model: OVX306 Frequency: 5.8G 40CH Transmitting Power: 0/RCE/25mw/100mw/300mw Power supply: DC 5V Current (5v): <650ma (300mw) Weight: 1.5gram without antenna Includes: Crux35 Frame x1 CrazyF411 ELRS FC with UART ELRS x1 Analog FPV Camera Caddx Ant x1 Happymodel OVX303 5.8G analog VTX x1 Happymodel EX1404 KV3500 brushless motor x4 HQProp T3.5X2X3Grey (4cw+4ccw) x1 Screw Driver x1 Buckle Velcro for battery x1