List of menu features and options – Eagle Tree Guardian 2D/3D Stabilizer User Manual

Page 10

Figure 11: Overall Gain vs. Stick

Position within Center Stick Box

Figure 10: Menu Navigation and Feedback

Entering the Radio Stick Menu is done by powering the model with the Guardian connected and quickly toggling the Mode/Config Switch back and forth four times within
the first 15 seconds following power-on. One second after the last switch movement, the menu will
be invoked.

You will know that the menu has been invoked when the servos of your model stop their normal
stabilization deflections and instead perform a short twitch followed by no further movement.
Also, the status LED will blink in a two blink sequence when the menu is active.

Menu Navigation

Once in the menu, you will start at menu item #1 in the List of Features and Options section below.
The menu items can be navigated by deflecting the Aileron and Elevator control inputs (your
control stick). On a controller where moving the stick to the right and pulling it back results in
negative servo deflections (servo pulse width is shortened), flicking the Aileron input to the right
will increase the menu item number currently being edited, while flicking the Elevator input
forward increases the option value for the currently selected item in the menu.

Menu feedback is reported through the Aileron and Elevator servo outputs, as shown in Figure 10.
Each time a new menu item is selected by flicking the Aileron control, the Aileron servo will
“twitch” once, delay 1.5 seconds and then twitch rapidly a number of times that corresponds to the
current menu item number selected. After this, the Elevator servo will count up to the current
option value number selected for that menu item. If a new option value is chosen by flicking the Elevator stick, the Elevator servo output only will twitch once each time
the value is changed, wait 1.5 seconds and then count up to the selected option value number.

If you have your Aileron or Elevator directions reversed on your transmitter, then they will also be reversed as you navigate the menu!

If you have reduced the rates/deflection ranges configured on your transmitter for your servos, ensure that they are deflecting at least 50% in order for

the menu to detect their movements.

Exiting the Menu

To exit the menu, saving the settings that were changed, quickly toggle the Mode/Config switch back and forth once. (up-down or down-up) Once out of the menu, normal
servo deflections will start again, using the new settings.

To exit the menu without saving your changes, simply disconnect the receiver battery and repower the plane. The Guardian will boot up again with its previous settings.

Menu Example
Let’s say you want to set the 2D Heading Hold Gain (menu option 5) to a value of 6. First, toggle the Mode/Config switch 4 times, to enter menu mode, which starts at
menu option 1. Then, you will flick the Aileron stick to the right (or left, if your ailerons are reversed) 4 times, to reach menu option 5. Then, your Aileron should twitch 5
times, to indicate that menu option 5 is selected. And, your Elevator will twitch a number of times, indicating the present setting for the 2D Heading Hold Gain. Then,
flick your Elevator stick up or down, to increase or decrease the 2D Heading Hold Gain setting, until it reaches 6. At this point, the Elevator should twitch 6 times, which is
the desired setting. To save the new setting, toggle the Mode/Config switch once, which exits menu mode, and returns servo control.

List of Menu Features and Options

The following is an ordered list of all the options adjustable in the Guardian’s Radio Stick Menu, and from the PC software. Note that options 14 and higher are available
only via the PC software.

Model Control Type

Enables internal mixing if needed. The Guardian expects only an unmixed servo control signal from the Rx.
1: Standard – Dual ailerons / flaperons are supported.
2: Elevon – The Guardian does the elevon mixing internally. Dual Aileron / Flaperon support is not available.
3: V-Tail – The Rudder and Elevator channels are mixed internally. Dual ailerons / flaperons are supported.

Center Stick Stabilize Only Mode

This feature is primarily for those who don’t have the Mode/Config switch connected, but want the benefits of 2D mode while also being able to perform acrobatics.
Maximum 2D Mode stabilization is active when the control stick is centered, and as the control stick is moved from center, the Overall Stabilization Gain reduces
proportionally as illustrated in Figure 11. (2D Mode Only)
Radio Stick Menu Options: 1: Off; 2: On

Center Stick Box Size

The maximum deflection of the control stick before stabilization is fully disabled in Center Stick Only mode. The
stabilization gain will decrease proportionally with the deflection of the control stick from its centered position. Once
the stick is moved past a certain point, controlled by this setting, stabilization is fully disabled. (2D Mode Only)
Radio Stick Menu Options: 1-10: Center Stick Box Width

Automatic Turn Coordination

Employs the “Step On The Ball” method to move the Rudder in order to coordinate your turns in 2D Mode. For more
information, see “Automatic Turn Coordination” under the “Main Features”/“2D Mode” section. (2D Mode Only)

When taxiing in 2D Mode on an incline, this feature will try to yaw your model down the hill. Additionally,
if the Guardian is not very close to the center of gravity, then this feature can increase the chance of Yaw

oscillations.
Radio Stick Menu Options: 1: Off; 2: Low; 10: High

2D Heading Hold Gain

When the control stick is centered horizontally (zero Roll command) in 2D Mode, the controller will roll the plane to
track its current heading. (2D Mode Only)
Radio Stick Menu Options: 1: Off; 2: Low; 10: High

Direct Rate 3D Control

When in 3D Mode, the plane will react much more precisely with this feature enabled. Instead of simply stabilizing the 3D flight, it will control the rotational rates of the
plane directly. This provides very strong disturbance (wind, airframe inertia, etc) rejection without having to “fight the gyro”. (3D Mode Only)

This feature will expand your servo deflections beyond any limits set on your transmitter, up to the limits set by the Guardian. See Expanded / Custom Servo
Ranges for more details on how to limit servo deflections.

Radio Stick Menu Options: 1: Off; 2: On