PX4

1. Connect to a free telemetry port (e.g., TELEM2)

2. In QGroundControl, set:

MAV_1_CONFIG = TELEM2
MAV_1_MODE = Normal

1. PX4 uses ELRS’s RC input via CRSF protocol (autodetects on boot)

2. Ensure RC_RATES and failsafe are set in the transmitter

PX4 expects the link as a CRSF device; telemetry is automatic.