Special Instructions for Using an SBUS Receiver with the AET-405A Flight Controller

F405 Flight Controller SBUS Wiring Instructions

Interface Description

SBUS uses the UART2 interface.

In INAV or ArduPilot (AP) firmware, configure UART2 as SerialRX (receiver input).

Wiring Definitions Pin Function Description GND (Black) Receiver ground 5V (Red) Receiver power supply SBUS (White) Receiver signal output (UART2 RX)

1️⃣ Ports Settings On the Ports tab in INAV Configurator: Locate the UART2 row; Enable Serial RX; Disable MSP, sensors, and all other functions on this port. 📸 As shown in the screenshot, Serial RX for UART2 is enabled and highlighted in blue. 2️⃣ Receiver Settings On the Receiver tab: Receiver Mode → Select Serial Serial Receiver Provider → Select SBUS Inversion → Keep OFF Do not connect an external 5V power supply to the receiver!