The BrainFPV Radix Li takes everything you love from the full size Radix FC, and puts it into a tiny 20×20 board.. The two main features are a robust Bosh Gyro, and a fancy modern OSD chip. Traditional betaflight OSD’s use a functional, but outdated OSD with limited features and update rates. The team at BrainFPV wanted something better so instead uss a graphical OSD chip that enables alot more features, and it just looks nicer.

The Bosh Gyro also mean that this FC performs great in the air. Other than that it has all the other features you expect and need from a betaflight FC.

Please make sure to read the quickstart guide before using this flight controller, as the firmware flashing is slightly different:

• Radix Li FC Manual

Compared to the Radix, the Radix Li is:

• Smaller (20×20)
• Has a 5V@500mA Regulator (3-6S Lipo input)
• No Baro
• No MicroSD slot
• No Analog RSSI input
• So ridiculously cute.

Technical Specifications RADIX Li FC

Processor: STM32F446RET6, Coretx-M4, 32bit, 180MHz, 128kB RAM, 512kB Flash.
IMU: Bosch Sensortec BMI160 running at 3.2kHz, connected using SPI.
OSD : Full-graphic, PAL/NTSC auto detect, adjustable black and white levels. Full Betaflight OSD support with extra graphical features. Support for side-by-side 3D when used with a 3D FPV camera.
Motor Outputs: 6 outputs with full DSHOT (150/300/600/1200) and OneShot support.
Receiver Support: PPM, S.Bus (inverter built-in), DSM, HoTT, SRXL, CSRF, FPort ready. 5V or 3.3V supply for receiver. Receiver is powered from USB for easy and safe setup.
Telemetry Support: FrSKY Smart Port, FrSKY Sensor Hub, HoTT Telemetry, SRXL, CSRF, FPort ready. Built-in inverter for FrSKY telemetry.

Serial Ports: 4 full serial ports (UARTs). UART3 and UART6 have inverters for S.Bus and SmartPort telemetry. Inverters are automatically enabled/disabled for maximum flexibility.
RGB LEDs: Dedicated RGB LED output.
Camera Control: Dedicated output for accessing the camera menu to change camera settings.
Buzzer Port: Dedicated port for 5V (100mA max) buzzers.
Analog Inputs: Voltage sensing (VBAT), current input (3.3V max).
Power: 3S – 6S (7.5V – 26V), 500mA BEC
Dimensions: 26.5mm x 26.5mm, 20mm hole spacing. 4.1mm holes for anti-vibration grommets for M3 screws.
Weight: 4g
Gluten free, Non GMO, Free Range Anorganic Gyro