FrSky X Series Failsafe Modes

The X8R and most FrSky receivers offer 3 options for failsafe.

1. They default to hold last good command.
2. You can program a set failsafe position via the Taranis, or pushing the f/s button on the receiver while holding the channels where you would like them.
3. Push the F/S button on the receiver when the transmitter is turned off, and the receiver will not output anything when in failsafe. This is handy for many flight controllers to trigger a safety mode.

Courtesy of rotozuk.  I didn't know about the third one.

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Taranis Failsafe

Using Taranis Failsafe

• All FrSky receivers have failsafe
• For X family receivers, set using model menu #2
• For older receivers (e.g. D family), use the older failsafe method of pressing the button on the Rx.

Taranis and X family receivers have three failsafe options:

• hold last input.  Don't ever use this one, it's almost always the wrong thing to do.
• no pulse. Some autopilots can be configured to handle this as a signal to start processing their own failsafe logic.
• custom.  This allows you to set the value of each servo channel.  When the Rx loses contact, those values are set for each channel.  When contact is resumed, control is turned back to the Tx.

While Binding or doing anything with your Rx/Tx, be sure and disable your props.

To set Taranis/X family Rx Failsafe

• bind the Tx/Rx if not already bound.
• on model menu 2, select Failsafe mode: custom
• click [SET] to proceed to the failsafe menu.
• For each channel, set the appropriate failsafe value.
• save the failsafe value which Long-Enter.

To set Non-X family failsafe

• bind the Tx/Rx if not already bound.
• move the sticks into position.
• push the failsafe button on the Rx.  You will see a double-blink of the LED.
• you can repeat this operation. each time sets the failsafe anew.

To clear failsafe on any FrSky Rx

•  rebind the Rx.

Verify your Failsafe

• do all configuration with props off.
• bench test several times.
• test in the air under controlled conditions.
• do these enough times to build up confidence in the failsafe operation.

Related FrSky Failsafe Videos

    FrSky: Binding and Setting FailSafe: http://www.youtube.com/watch?v=kV4T968HHPM

    setting failsafe starts at 1:16:               http://youtu.be/kV4T968HHPM?t=1m16s

    Setting Ardupilot Failsafe FrSky:     http://www.youtube.com/watch?v=r7B0Sfyb6Uo

    autopilot failsafe starts at 4:58:          http://youtu.be/r7B0Sfyb6Uo?t=4m58s

Checking out ArduCopter 2.6

king pretty good!  I went out with Andreas who had downloaded 2.6 onto his heavy lifter hex.

There's been a lot of discussion about Turnigy 9x failsafe.  The solution is simple, in both Andreas' and my opinion:  swap out the module for FrSky... cheap too, at $40 for the module and Rx.  I'll cover setting the failsafe in an upcoming post.