SkyStarsRC Fly Stack F4 HD 2 3-6S 30x30 Stack/Combo (F405 FC / KO45 8Bit 45A 4in1 ESC)

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The SkyStars Fly Stack features an F405 HD 2 OSD flight controller and a KO45 45A BLHeli_S 4in1 ESC with a 30x30 mounting pattern!


  • F405 HD 2 Flight Controller
  • KO45 45A 4in1 ESC
  • 16MB Blackbox
  • BMI270 Gyro
  • Barometer
  • OSD


F405 HD2 FC

  • MCU: STM32F405
  • IMU: BMI270
  • OSD: AT7456E
  • Blackbox: 16MB
  • UARTS: 6X Uarts
  • WS2812 led Strip: YES
  • Baro: No
  • Beeper: YES
  • BEC: 5V/3A cont
  • FC Firmware: Betaflight
  • FC Target: SKYSTARSF4 HD
  • Physical Mounting: 30.5x30.5mm, 4mm with Grommets 3mm
  • Dimensions: 36x36mm
  • Weight: 6g

KO45 45A ESC

  • Dimension: 41x46mm
  • Mounting Holes: 30.5x30.5mm/¦µ3mm
  • Weight: 13.3g
  • Supports 3-6S Lipo input
  • BB21 MCU, 48Mhz Runs BLHELI 16.X Firmware
  • Current sensor: YES
  • BEC: NO
  • Supports: DShot DShot150/300/600/MultiShot/OneShot etc.
  • Target: Q-H-30 BLS 16.7
  • Dampers color can vary


  • 1x SkyStarsRC Fly Stack F4 HD2 3-6S 30x30 Stack/Combo (F405 FC / KO45 8Bit 45A 4in1 ESC)