With the constant growth of popularization of the use of drones around the world, drone racing is also becoming common, and to be able to participate in these competitions it is necessary to have the best flight controller for racing drone available among the countless options that exist on the market.

However, choosing an appropriate flight controller is not a simple process. With the advancement of technology in recent years, flight controllers have evolved a lot and therefore there are many parameters to be analyzed when making a choice. One of the best and most worthwhile options in the market nowadays is for sure the FrSky RXSR-FC OMNIBUS F4 Fireworks V2 FPV Drone Flight Controller.

This device can be found at HorusRC online shop (horusrc.com), a reference store in this sector. In this online shop, you can purchase FrSky’s RXSR-FC Drone Flight Controller for only $55.99. Go get yours now!


How to choose a Flight Controller

Flight controllers are circuit boards that have sensors, such as gyroscopes and accelerometers, and several others that provide information about the drone. In addition, one of the main functions of a flight controller is to receive and process the incoming signals from the receiver and execute the commands given by the pilot, an important role for a racing drone.

Hardware is one of the most important aspects to consider when selecting a drone flight controller. The flight controller hardware determines performance because quality components guarantee accuracy and efficiency. Thus, it is important to pay attention to the processor, sensors, and resources provided by the flight controller to meet the needs of a racing drone.

As it is known that choosing the best flight controller for a racing drone is not a simple task, one should look for one that has easy to configure firmware, compatible with the most advanced drone gear and is focused on obtaining the highest speed and performance possible by reading data and sending updates more quickly.


RXSR-FC (OMNIBUS F4 Fireworks V2)

The FrSky RXSR-FC (OMNIBUS F4 Fireworks V2) aims to offer users a variety of options in their constructions. The RXSR-FC uses the ICM20608 over SPI to produce stable flight performance. It counts with an RXSR receiver, mounted in the integrated protection box. Also onboard are a barometer and an OSD AB7456 chip for the integrated OSD Betaflight.

The RXSR-FC (OMNIBUS F4 Fireworks) also supports Lipo 3-6s direct input, current sensor, and built-in room power filter. In addition, the internal resistance is 0.2-0.5 ohm of the input for each block about to leave. This flight controller provides some unique features, such as 8V / 1A power, hall current sensor, and extra-large solder pads. Together with the reliable and powerful F4 processing speed.

By looking at the specifications of the RXSR-FC (OMNIBUS F4 Fireworks) detailed below you will realize why it is the best flight controller for racing drones.

  • F4 Processor

The F4 processor is a replacement for the old F3 version and both are based on the architecture of the STM32, which uses 32-bit processing instead of 8-bit found on KK2.x boards. These boards were the most popular and have been replaced mainly because they are less functional and accessible for use in flight controllers.

The F4 has a processing speed of 168 MHz and offers 210 DMIPS / 566 CoreMark performance running in Flash memory. The DSP instructions and the floating-point unit increase the range of addressable applications.

  • Betaflight Firmware

Currently, Betaflight is the most popular option with its easy GUI (graphical user interface) and in constant development by its developers. It is also a flexible and powerful firmware for a flight controller, having an impressive list of compatibility with advanced features, such as OSD control, VTx control, Blheli Dshot.

  • Hardware


A single IMU (inertial measurement unit) chip contains gyroscopes and accelerometers. A gyroscope is a device that uses Earth's gravity to help determine the orientation of the racing drone and an accelerometer is a compact device designed to measure non-gravitational acceleration and is also designed to respond to the vibrations associated with that movement.

The ICM20608 is a 6-axis motion tracking device that combines a gyroscope and a 3-axis accelerometer each in a small 16-pin LGA package. It also has a 512-byte FIFO that can reduce traffic on the serial bus interface and reduce power consumption, allowing the system processor to stop reading sensor data and then enter low power consumption mode. energy.

It is important to highlight the greater availability now of 5 UART (Universal Asynchronous Receiver / Transmitter) ports which are the hardware interfaces that allow users to connect various devices, such as camera OSD control, VTX channel control, serial radio receiver, etc. Always with the possibility to implement making the best flight controller for a racing drone.