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Posted by Miami Mike | Nov 12, 2016 @ 04:39 PM | 10,430 Views
When it comes to setting failsafe configurations that determine what our models will do if and when they lose radio contact, we often wind up taking a wild guess about what position each control should take. Then we face the very scary prospect of turning off our radios in flight to test those settings, hoping that we'll be able to regain control in time. I've never had the nerve to try that and I'll bet very few others have either.

Here's my method for setting failsafe. This procedure applies to the X8R receiver and probably most other FrSky receivers:

First of all, on the Taranis MODEL SETUP page for each model, the options for Failsafe mode are Not set, Hold, Custom, No pulses, and Receiver. I had at first set mine to Receiver, which means when you press the F/S button on the receiver it memorizes the current control positions and uses them as its failsafe configuration. I've since switched to Custom and added a note to the end of this post about why that appears to be a better choice than Receiver.

For setting failsafe I used what was my next available flight mode, which was FM8, to which I assigned the name SetFail. I set all four trim settings to Own Trim and set the SetFail mode to be activated by a Logical Switch which I'll call L4 for this example. L4 becomes false and SetFail is deactivated the instant either the aileron or elevator stick position is moved from center. In Mode 2 that means the instant the right stick is moved.

I also added mixes to change...Continue Reading
Posted by Miami Mike | Nov 12, 2016 @ 08:41 AM | 10,154 Views
Here are my current Taranis X9D control assignments for sailplanes:

My radios have 3-position switches in place of S1 and S2, as described in Taranis: Change S1 & S2 to Switches. The switch positions are labeled S1↑, S1-, S1↓, S2↑, S2-, and S2↓.

My model memory setups are based upon Mike Shellim's F3J/TD Version 2, with substantial modifications, some of which are adopted from his newer F3J/TD Version 3 setup. You can find his competition glider setups at

  • SE Different Functions for Pure Glider and Motor Glider Versions
    • Pure Glider Version - Flight Modes For Winch Launching. Flap stick must be in full-up position.
      • SE↑ Zoom mode. A separate elevator rate for Zoom mode is included on the Inputs page.
      • SE- Glide (Goes to the flight mode selected by switch SA.)
      • SE↓ Launch mode. Uses a separately adjustable combi mix that reads the aileron stick directly and is independent of aileron rates.
    • Motor Glider Version - Motor Control Motor must be armed.
      • SE↑ motor full power
      • SE- motor half power
      • SE↓ motor off. SE must be in this position before motor arming is possible.
  • SF Select Landing Mode When the flap stick is moved away from the top position either Flap mode or Crow mode is activated, depending upon the position of SF.
    • SF↑ Flap mode (flaps only) with separate elevator compensation curve and weight setting.
    • SF↓ Crow mode (flaps down, ailerons up)
...Continue Reading
Posted by Miami Mike | Nov 12, 2016 @ 08:31 AM | 9,608 Views
If 3-position switches (short or long) are wired in parallel with the S1 and S2 potentiometers ("pots"), the pots are left in their center positions (very important), insulated, and stored inside the radio, and the switches are installed in their places, the following six additional switch functions will be available:

S1↑ S1− S1↓ S2↑ S2− S2↓ (Of course these designations won't show up on your radio screen or in Companion but they can be useful in your programming notes.)

Decoding S1↑ and S1↓ with Logical Switches:
L1	a~x S1  100 ---- 0.0 0.0 L1 = S1↑ 
L2	a~x S1 -100 ---- 0.0 0.0 L2 = S1↓
These two Logical Switches may be reversed, depending
upon which way the 3-position switch is installed in your radio.
If S1− represents a default setting then it might not need to be specifically decoded, otherwise it can be decoded with a third Logical Switch:
L3	AND !L1 !L2 ---- 0.0 0.0 L3 = S1−
The code for S2 is similar:
L4	a~x S2  100 ---- 0.0 0.0 L4 = S2↑ 
L5	a~x S2 -100 ---- 0.0 0.0 L5 = S2↓
L6	AND !L4 !L5 ---- 0.0 0.0 L6 = S2−
To wire a 3-position switch in parallel with a pot, use short insulated jumper wires to connect the top terminal of the pot to the top terminal of the switch, the center terminal of the pot to the center terminal of the switch, and the bottom terminal of the pot to the bottom terminal of the switch. Remember that the pot has to stay connected even though it won't be accessible, and it has to be set to the center detent position.

If you want to reverse the modification later it won't be necessary to disconnect or remove the switch. Just set it to its center position, insulate it, store it away inside the radio, and put the pot back where it used to be. Remember that in either case the control that's not being used must remain set to its center position.