Portable — Fsuipc Python

The only limit is your imagination—and perhaps your ability to decipher the FSUIPC offset map. Happy flying, and happy coding.

with FSUIPC() as ipc: # read an offset airspeed = ipc.read_offset(offset_id_for_airspeed, data_type) # write a control/event ipc.write_event(event_id_for_landing_gear_toggle)

Developed originally by Pete Dowson for Microsoft Flight Simulator, FSUIPC is a modular DLL that acts as a shared memory interface between the flight simulator (now including Prepar3D and Microsoft Flight Simulator 2020) and external applications. Rather than sending high-level, parsed events, FSUIPC allows direct reading and writing to specific memory offsets. For example, offset 0x023C holds the magnetic compass heading, while offset 0x057C controls the magneto switch position. This low-level access provides exceptional speed and precision. The "Universal" in its name is apt: it provides a consistent API across multiple simulator versions, insulating the developer from changes in SimConnect or simulator internals. fsuipc python

Writing data is just as easy. Here’s a script that sets the altimeter pressure to standard (29.92 inHg / 1013.25 hPa).

Before writing code, you need the following installed: The only limit is your imagination—and perhaps your

This guide provides a comprehensive introduction to using Python with to interact with flight simulators (Microsoft Flight Simulator, FSX, P3D, and MSFS via FSUIPC7).

Writing to certain offsets (like engine controls or autopilot) can override user input or cause unexpected behavior. Always test carefully. Rather than sending high-level, parsed events, FSUIPC allows

while True: line = ser.readline().decode().strip() if line == "GEAR_TOGGLE": # Toggle landing gear (offset 0x0BEC, byte 0 = 1 for up, 0 for down) fs.write(0x0BEC, b'\x01') # Toggle event print("Gear toggled") time.sleep(0.1)

This will download and install the latest version of the fsuipc package.

Once you have the basics, the real fun begins. Here are common projects the community builds with FSUIPC + Python:

: IAS (Indicated Airspeed) – Multiplied by 128. Size: 4 bytes (Integer).