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Holybro Kopis Racing 3inch FPV Drone with Frsky R-XSR Receiver (NON EU LBT)


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PDF icon Manual2.42 MB

Holybro's latest racing drone has been designed to sit within the sub 250g weight category, but to deliver the speed and agility of a larger drone. The Kopis Racing 3inch drone only weighs 145 grams. Considering that a 4S 850mAh LIPO battery weighs around 100 grams, the total take-off weight of the Kopis Racing 3 remains under 250g.

As with all Kopis series racing drones, this drone is built from high quality components. The Holybro Kopis Racing 3″ is built on a robust 137mm size carbon fiber frame with 4mm thick arms. Its powerful F1507 KV3800 brushless motors are paired with 3-leaf propellers. The flight stack consists of a Kakute F7 Mini V3 flight controller and Tekko32 F3 4in1 35A mini ESC board.


  • 3″ FPV Racing drone under 250g (145g aircraft weight + ~100g 850mAh 4s LIPO);
  • 137mm size carbon fiber frame with 4mm arms;
  • Kakute F7 Mini V3 flight controller;
  • Tekko32 F3 4in1 35A mini ESC;
  • F1507 KV3800 brushless motors +  T3140 propellers;
  • RunCam Racer Nano 2 camera;
  • Atlatl HV Micro 5.8GHz VTX;
  • Onboard buzzer;
  • Noise filtering capacitor;
  • 4S LIPO compatible (XT30 plug).


  • Battery: 650-850 4S Lipo XT30 (at least 60C) - if you you have XT60 batteries we sell a XT30 to XT60 Adapter.

Note: The BNF comes with a Frsky R-XSR Receiver (NON EU LBT, if you require LBT the receiver can be re-flashed or we can fit one for you, please contact us). The PNF version requires a receiver. You must use a receiver that supports a serial protocol such as SBUS, iBus, and Spektrum Satellite. You cannot use a PPM or PWM receiver with the Kakute flight controller on the KOPIS.

3D Print Files:

CAA Sub 250G registration information HERE. As this drone includes a camera, an Operator ID is required, but you don't need a Flyer ID as it's sub 250grams.


  • Frame:4mm 3k carbon fiber
  • Flight Controller: Kakute F7 mini V3 
  • ESC: Tekko32 F3 4in1 35A mini ESC
  • 5.8G VTx: Atlatl HV Micro
  • Motor: F1507 KV3800
  • Propeller: T3140
  • FPV camera: RunCam Racer Nano 2
  • Adjustable camera uptilt from 10 degrees to 90 degrees
  • Buzzer included.
  • Battery plug: XT30
  • Wheelbase: 137mm
  • Weight:145g
  • Recommend battery: 850mAh 4s


  • MCU: STM32F722RET6 32-bit processor
  • IMU: MPU6000 (SPI)
  • Barometer: BMP280
  • USB VCP Driver (all UARTs usable simultaneously; USB does not take up a UART)
  • 5hardware UARTS (UART1,2,3,4,6)
  • Supports serial receivers (SBUS, iBus, Spektrum, Crossfire) only. PPM and PWM receivers are not supported.
  • Onboard 16Mbytes for Blackbox logging


  • 1x Kopis FPV racing drone
  • 8x T3140 Propeller
  • 1x TPU 3D Print
  • 1x Battery strap(installed)

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