Hitec Use - General Notes

Hitec Installation Notes and Equipment Selection

Note: This page is a Draft/Work in Progress. We request feedback from customers to make this page better based on your experience.

There are two ways to connect the Aura to your Hitec Receiver:

• S.Bus (Hitec implementation of Futaba S.Bus)
• Traditional PWM Servo Connection

NOTE: Any recommendations are based on years of knowledge and product use and are informational only.

• We do not 'specify' radio installations. Consult your radio manufacturer for radio information.
• We test and support the use genuine Hitec brand equipment.

Hitec S.Bus

• Preferred way to connect the Aura to select Hitec Receivers
• We tested with a A9X Transmitter and a Optima SL (Single Line) 8 Channel Receiver
• S.Bus - S.Bus is serial data on one wire (Digital). It gives the Aura knowledge of all of the available Hitec channels.
  • Aura will follow the Failsafe outputs of the Hitec Receiver.
  • Recommended for all aircraft types
  • S.Bus Input plugs into Aura Port B (Servo Bus)
  • Precise digital Data
  • Availability of all 8 Aura Ports as outputs
  • Receiver ports are also active and available for use

Notes on using Hitec S.Bus

• These notes supplement (add to/modify) the normal Transmitter setup that you should follow.
• Hitec has elected to use the Futaba Header Bytes ID Code, so the Aura will work and/or auto-detect as a "Futaba S.Bus"
• Hitec has duplicated some of the Futaba data format standards such as Channel Order in the data
• Hitec has chosen NOT to duplicate other Futaba data standards such as channel center data, and direction of travel away from center.
• Due to these variations, you must make some additional changes to your Hitec Transmitter settings in order to complete the Futaba 'emulation'.
  • Reverse Transmitter Channels
    • Reverse the Elevator Channel
    • Reverse the Throttle Channel (To use the Aura throttle port for an ESC, else as required)
    • Reverse the Flap Channel (If needed to match Futaba, or as required)
  • Adjust Transmitter EPA (Travel) Settings to make the Tx equivalent to a Futaba at +-125%
    • Aileron Left and Right to 133%
    • Elevator Up and Down to 133%
    • Rudder Left to 140%, Right to 133% (output not symmetric in Tx's we evaluated)
    • CH5/Gear to 100% in both directions
  • Subtrim Transmitter Settings (To emulate Futaba Centers, Aura expects CENTERED Data, otherwise you may see trim changes with Flight Mode change)
    • Aileron to +7
    • Elevator to -7
    • Rudder to +7
    • Gear to +7
    • Flap to +7
    • Throttle to -7
• You can save a copy of the 'basic' Tx program in you transmitter to copy as a starting point for future Aura equipped models.
• Aura will be set/used/auto-detected as a FUTABA -> SBUS -> SERVO PORT B

NOTE: Make sure to run and pass the Transmitter AND Sensor tests before flying

NOTE: You can check the DATA input to Aura using the Aura Config Tool (Windows App) with the system all connected and active using LIVE DATA. Turn on the Config Tools Live Data, and look a the bottom of the Setup Tab. The simulated sticks should track the movement of the transmitter sticks. The Aura Monitor's Center Data of Aileron, Elevator, and Rudder should be 0% (adjust Tx subtrim as needed). The Travel for these same channels should be very close to +-125% (adjust EPA as needed). If the Data is not 'Centered' (0% on Aura Input Monitor), you may see trim changes when changing Aura Flight Modes.

Traditional PWM Servo Connections

• Least preferred
• Recommended for all aircraft types.
• Supports virtually all receivers
• Limits port availability. Typically Aura will be configured with 4 inputs and 4 outputs with PWM.