Wiring Diagrams and Wiring Instructions

The wiring diagrams for the AeroEgg AET H743 Basic flight controller are shown below:

Common peripherals include GPS positioning modules, SBUS receivers, ELRS receivers/TBS CRSF receivers, digital video air units (including DJI O3, O4, and Vista; Caddx Avatar series; and open-source OpenIPC HD video systems), airspeed sensors, electronic compasses, and other devices.

GPS modules, SBUS receivers, ELRS receivers, TBS CRSF receivers, telemetry link modules, and digital video air units are serial peripherals. The compass in a GPS module and an analog airspeed sensor are I2C bus peripherals.

An analog airspeed sensor or other I2C device can be connected to the flight controller's SDA and SCL bus pins. See Chapter 4, Section 12 for details.

Serial-bus receiver wiring example: For an ELRS receiver or TBS CRSF receiver, connection to the flight controller's UART2 port is recommended, as shown above.

Connect receiver R (or RX) to flight controller TX, and receiver T (or TX) to flight controller RX.

Connect receiver V (or 5V) to flight controller 4V5, and receiver G (or GND) to flight controller G.

After wiring, configure the corresponding settings on the ground station's Serial Ports page.

GPS module (with electronic compass) wiring example For a GPS module, connection to the flight controller's UART2 port is recommended, as shown above.

Connect GPS R (or RX) to flight controller TX2, and GPS T (or TX) to flight controller RX2.

Connect GPS V (or 5V) to flight controller 4V5, and GPS G (or GND) to flight controller G.

Connect GPS SCL to flight controller SCL1, and GPS SDA to flight controller SDA1. CL and DA are the I2C bus connections for the electronic compass integrated into the GPS module. A compass is optional on a conventional fixed-wing aircraft. If the GPS module has no compass, CL and DA do not need to be connected.

After wiring, configure the corresponding settings on the ground station's Serial Ports page.

Digital video air unit wiring example For a digital video air unit, connection to the flight controller's TX1, RX1, 9V, and GND pins (UART1 port) is recommended. Connect air unit R (or RX) to flight controller T1, and air unit T (or TX) to flight controller R1.

Connect air unit V to flight controller 9V, and air unit G (or GND) to flight controller G.

DJI air units include an SBUS receiver module for pairing with the DJI FPV 2 radio transmitter. If the DJI FPV 2 radio transmitter is not used, only four wires are required between the air unit and the flight controller. After wiring, configure the corresponding settings on the ground station's Serial Ports page.

Servo wiring example Servo connectors are generally 2.54 mm 3-pin DuPont connectors. The dark servo wire is normally G (GND), the red or orange-red wire is the positive 5V servo supply V, and the white or orange-yellow wire is the servo control signal S. Connect the servo to the corresponding S3~S12 output and configure its assignment on the flight controller's Servo Output settings page.

ESC signal-wire connection example ESC signal connectors are generally 2.54 mm 3-pin DuPont connectors. The dark wire is normally G (GND) and connects to the corresponding S1~S12 output; the light-colored or white wire is the ESC control signal S. On some ESCs with an integrated 5V BEC, the center 5V output wire can conflict with the flight controller's integrated 5V servo BEC after the ESC is powered. Disconnect the 5V wire from such an ESC signal lead before connecting it to the flight controller. Configure the corresponding assignment on the flight controller's Servo Output settings page.