OSS + ELC EU 2026

Most PX4 simulation relies on an external simulator talking to the autopilot over a network bridge. SIH, the Simulator In Hardware, does the opposite: it is a single PX4 module that integrates the full rigid-body equations of motion right next to the flight stack. The same code runs as a SITL process on your laptop and, just as well, directly on the flight controller, feeding synthetic sensor data into the estimation pipeline while the board flies a virtual vehicle.

This talk opens up SIH and shows how little there is between you and a flying model: how actuator outputs become forces and torques, are integrated through the equations of motion, and are reconstructed into noisy IMU, baro, GNSS, and airspeed signals that the rest of PX4 cannot tell from real hardware. We cover the vehicle types supported, the aerodynamic model that makes adding an airframe a matter of physics rather than plumbing, and how to launch, run, and extend SIH.