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 and 108g for the digital HD version. Now release a new HDZero Version, comes with RunCam Nano HDZero Camera & HDZero WHOOP VTX .

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.

The receiver version can be SPI ExpressLRS and SPI Frsky (S-FHSS compatible) for choose.
ExpressLRS is the most popular RC link system by now , it could performance very well with Crux35.

Features:

Ultra-lightweight 3.5-inch BNF FPV Freestyle Drone

Integrated ExpressLRS SPI receiver or Frsky SPI D8/D16 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 HDZERO

Wheelbase: 150mm

Weight: Crux35 87gram

Crux35 HD 108gram

Size: 130mmx130mmx45mm(without propellers)

Receiver option: SPI ExpressLRS 2.4GHz

SPI Frsky D8/D16 (S-FHSS compatible)

HDZERO version RunCam Nano HDZero Camera + HDZERO WHOOP 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):Φ15mm15mm 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 (ELRS Version)	MCU:STM32F411CEU6 (100MHZ, 512K FLASH) Sensor: MPU-6000(SPI connection) Mount pattern: 20×20 M2Size:32289mm Power supply: 2-4S Lipo battery Built-in 12A Blheli_s ESC each Built-in Betaflight OSD(SPI Control) Built-in SPI ExpressLRS 2.4GHz receiver Built-in 5V 1A BEC Flight 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 version)	Packet Rate option: 25Hz/50Hz/150Hz/250Hz/500Hz RF Frequency: 2.4GHzAntenna : Immortal antenna Telemetry output Power: <12dBmReceiver protocol to flight controller: CRSF Could bind with Happymodel ES24TX , ES24TX Lite, ES24TX Slim and DIY 2.4GHz ELRS TX module
Onboard SPI Frsky 2.4GHz receiver (Frsky 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
Camera RunCam Nano HDZero(HDZERO version)	Model: Racer SKU: HDZ3203 Lens: FOV D150 degree Power: 450mA@3.3v Digital: 1280*720@60fps
VTX HDZero Whoop(TX5S.1)(HDZERO version)	Model: HDZero Whoop SKU: HDZ3110 Frequency: 5.8G Resolution Default: 1280720@60fps RF power: 25mw/200mw RF Connector: U.FL Interface: 4 lane MIPI CSI YUV422 Video Connector: 20 Position 0.30mm Pitch Size: 32.5mm x 32.5mm x 7mm Weight: 5.4g Power: 410mA@12V Mounting: 25.5mm25.5mm,M2 clearance hole