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SITL Forge – External FC: Betaflight

Game overview

SITL Forge – External FC: Betaflight

SITL Forge · May 22, 2026

Adds a 1000Hz software-in-the-loop bridge to Betaflight firmware. Replaces the built-in flight controller with the real firmware running on your PC, turning the simulator into a controlled environment for iterating on PID gains, filters, and rates without risking real hardware.

Simulation
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About this game Read the full description
Fly real Betaflight in SITL Forge. The built-in controller is replaced with Betaflight firmware running on your PC — you fly and tune the same code you flash to your quad, driven by 1000 Hz physics fitted to real bench data.

Requires the base app: SITL Forge - FPV Laboratory.

Connect in 3 steps

  1. Build the SITL from Betaflight source: make SITL_X_PLANE
  2. Run betaflight_SITL_X_PLANE.elf
  3. In SITL Forge: External FC → Betaflight → Activate
Your sticks work right away. To tune live, connect Betaflight Configurator to ws://127.0.0.1:6761 — the WebSocket bridge is built in, no proxy needed.

What you get

  • 1000 Hz motor/state link and 50 Hz RC link — joystick or RC transmitter
  • MSP over TCP and WebSocket for Configurator and tools
  • Old and new Betaflight SITL builds detected automatically (motor order, bridge dialect)
  • Firmware can run on another PC or in WSL — host and ports set in-app
  • Tune PIDs, rates and filters against simulated motor vibration, without risking hardware

Compatibility

You build Betaflight SITL yourself this DLC does not include Betaflight binaries. Step-by-step setup is in the app. Tested with Betaflight 4.5+ and current master.

An independent integration, not affiliated with or endorsed by the Betaflight project. "Betaflight" is a trademark of its respective owners.
Media gallery 1 screenshots · 0 videos
SITL Forge – External FC: Betaflight game capsule image

Screenshots

SITL Forge – External FC: Betaflight screenshot 1

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System requirements Windows · Linux

Windows

Minimum

Minimum:
  • Requires a 64-bit processor and operating system

Recommended

Recommended:
  • Requires a 64-bit processor and operating system

Linux

Minimum

Minimum:

    Recommended

    Recommended:
      Game details Languages, features & support
      Brazilian rating
      l
      Steam Germany rating
      0
      Controller support
      full
      Features
      Single-player, Downloadable Content, Full controller support, Adjustable Text Size, Camera Comfort, Color Alternatives, Custom Volume Controls, Adjustable Difficulty, #category_playable_at_your_own_pace, Playable without Timed Input, Save Anytime, Family Sharing
      Languages
      English, Ukrainian
      More analysis Activity patterns, updates & developer tools

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      Frequently Asked Questions

      Is SITL Forge – External FC: Betaflight free to play?
      SITL Forge – External FC: Betaflight costs $10.00 on Steam.
      What genre is SITL Forge – External FC: Betaflight?
      SITL Forge – External FC: Betaflight is a Simulation game.
      Who developed SITL Forge – External FC: Betaflight?
      SITL Forge – External FC: Betaflight was developed by SITL Forge.
      What platforms does SITL Forge – External FC: Betaflight support?
      Available on Steam for Windows, Linux.