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HelioRC SPRING Mini 20x20 IMU-F Flight Controller


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Helio is a heavy hitter in the FPV community. They have recently added the Helio Spring Mini 20x20 Flight Controller. This Flight Controller is capable of 32khz pid-loop. The Mini 20x20 runs all your favorite Flight Controller firmwares including Butterflight, BetaFlight and many more. If you aren't flying Helio you're missing out on one impressive Flight Controller.

Truly Freeing

  • Runs Multiple open source Flight Controller firmwares including the latest Butterflight, Betaflight, iNav and others.

Natively Fast

  • True 32khz processing without overclocking
  • More than capable of 32khz pid-loop speeds even on an F4

Helios IMU-F

  • The IMU-F system is an advanced inline discretely filtered gyro that is transparent to the Flight Controller
  • More processing power is available for Flight Controller logic and future feature updates without causing slowdown or other issues during flight.
  • The hardware contains both F3 and an F4. The Gyro is the ICM 20601.


  • Processors: F4 & F3, STM32F405 & STM32F301
  • IMU: ICM 20601
  • OSD: Full Betaflight OSD support
  • Motor Outputs: Full DSHOT and MULTISHOT support.
  • Receiver Support: PPM, S.Bus (Inverter built-in), DSN, HoTT, SRXL, CSRF, FPort ready. 5V or 3.3V supply for receiver.
  • Telemetry Support: FrSKY Smart Port, FrSKY Sensor Hub, HoTT Telemetry, SRXL, CSRF, FPort ready Built-In inverter for FrSKY telemetry.
  • Serial Ports: 5 full serial ports (UART's). UART1 and UART2 have inverters for S.bus and SmartPort Telemetry.
  • Buzzer Port: Dedicated Port for 5V (100mA max) buzzers.
  • Analog Inputs: Voltage sensing up to 26V, Current and RSSI inputs (3.3V max).
  • Power: VBAT up to 6S with voltage regulator 2.5A continuous 3.2A burst. Or 5v in (switchable with jumper pads)
  • LC filter on the OSD line
  • Filtered camera power