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HappyModel Crux3 - 1S ELRS 3inch FPV Toothpick Drone F4 2G4 Built-in SPI ELRS 2.4G OPENVTX 400mW Caddx Ant EX1202.5 KV11500 1S

HappyModel Crux3 - 1S ELRS 3inch FPV Toothpick Drone F4 2G4 Built-in SPI ELRS 2.4G OPENVTX 400mW Caddx Ant EX1202.5 KV11500 1S


Regular price $134.27 USD
Regular price $187.98 USD Sale price $134.27 USD
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Free Shipping: 9-15 days to arrive.

Express Delivery: 5-8 days to arrive.

Warehouse: China/USA/Europe, Can delivery to all countries, tax included.

Free shipping & User guarantee

  • Free Shipping:Ships within 3days, arrives within 10-18 days
  • Paid Express: Ships within 2days,arrives within 4-7 days
  • Money back guarantee: Quality problems, return and exchange within 30 days
  • 12-month warranty, long-term after-sales service
  • No need to register account, Order tracking url will send to your email
  • More FAQ:FAQ


Use: Vehicles & Remote Control Toys

Upgrade Parts/Accessories: other

Tool Supplies: other

Remote Control Peripherals/Devices: Remote Controller

Recommend Age: 12+y

RC Parts & Accs: Receivers

Origin: Mainland China

Model Number: Crux3 1S ELRS

Material: Composite Material

Four-wheel Drive Attributes: other

For Vehicle Type: Helicopters

Brand Name: happymodel


Flight test video


40gram 1s brushless Toothpick drone

AIO Flight controller with ELRS Receiver and 5.8G VTX


New 1202.5 KV11500 brushless motor

Recommend to use 1s 450mah/650mah/660mah/720mah battery

Compatible with CaddxFPV Peanut and Insta360 GO2

Carrying Caddxfpv peanut Got 4.5 minutes flying time with 1s 650mah battery


Brand Name: Happymodel
Item Name: Crux3 1S ELRS

Wheelbase: 115mm
Size: 97mmx97mmx35mm (without propellers)
Weight: 40g(without battery)


Package includes:

Item Name


Crux3 Frame and canopy


ELRS F4 2G4 flight controller built-in SPI ExpressLRS 2.4G receiver


Happymodel EX1202.5 KV11500 brushless motor


Gemfan 75mm bi-blade Propellers(4cw+4ccw)


Caddx Ant 1200TVL Global WDR with OSD 2g Ultra Light Nano FPV Camera


5.8G 25mw~200mw 40ch vtx (Flight controller built-in)


Screw Driver


Propeller disassemble tool


3D Printed canopy for Insta360 GO2 and CaddxFPV Peanut


Happymodel Handbag






Mode: EX1202.5 KV11500
Stator Diamter:12mm
Stator Length:2.5mm
Shaft Diameter:Φ1.5mm
Motor Dimension(Dia.*Len):Φ14mm*14.5mm
No.of Cells(Lipo):1S



Gemfan 75mm

Center Thickness:5mm

Prop Diameter:75mm

Center Hole diameter:1.5mm


Flight controller

MCU:STM32F411CEU6 (100MHZ, 512K FLASH)
Sensor: MPU-6000(SPI connection)
Original whoop size compatible
Power supply: 1S battery input (DC 2.9V-4.35V)
Built-in 5A(each) Blheli_S 4in1 ESC Dshot600 ready
Built-in Betaflight OSD(SPI Control)
Built-in 5.8G VTX
Built-in SPI ExpressLRS 2.4GHz receiver

Built-in 5V 1A BECFlight controller

firmware target: CRAZYBEEF4SX1280

Onboard 4in1 ESC

MCU upgraded to EFM8BB21
Power supply: 1S LiPo/LiPo HV

Current: 5A continuous peak 6A (3 seconds)
Support BLHeliSuite programmable
Factory firmware: O_H_5_REV16_7.HEX
Default protocol: DSHOT300


Onboard SPI ExpressLRS 2.4GHz Receiver

Packet Rate option: 25Hz/50Hz/150Hz/250Hz/500Hz
RF Frequency: 2.4GHz

Antenna : SMD antenna
Telemetry output Power: <12dBm

Receiver protocol to flight controller:  CRSF

Could bind with All ExpressLRS 2.4GHz TX module , ExpressLRS firmware need 1.0.0 or latest

Onboard 5.8g VTX

Output power: 25mw~200mw switchable
Frequency: 40CH
Input voltage: 3.3V 5.5V
Current consumption: 300mA(type)
Frequency: 5.8GHz 5bands 40 channels
With Race band 

Smartaudio ready

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: 0.001Lux@F1.2

Auto Gain Control: YES


WDR: Global WDR


Dimensions: 14*14mm(with bracket to 19*19mm)

Wide Power Input: DC 3.7-18V

Work Temperature: -20℃~+60℃

Weight: 2g (N.W.)


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