This is how you connect it. It goes from X8R's SBus port to APM's first channel (marked A on this FC). Watch orientation of yellow signal wire and you should be fine. You also install a standard jumper on SIGNAL PINS 2 & 3 of the Flight-Controller. The X8R now uses this single cable to communicate to FC for RC-Channels 1-8.
It also powers the Flight-Controller (this is how the FC gets power now). The only other X8R-RX cable pictured here (black-red-white) is BEC+5v input power from PowerBoard.
Radio Re-Binding:
Since my Nova (Model #1) was previously Bound in Mode-1(D8), I needed to re-Bind X8R to Taranis in Mode-4(D16). The 8 physical ports on the X8R will now become RC-Channels 9-16.
Follow X8R binding procedures in manual sheet. Basically, you need 2 jumpers installed and be carefully pressing F/S button (behind tiny sticker-cover) BEFORE you connect battery to X8R. After it powers-up, you can release F/S button. X8R should now be in Binding Mode.
At the Taranis TX radio, you access your aircraft's Model Setup (mine is Model #1 called Nova).
- Internal RF
- Mode: D16
- Channel Range: CH1-16
- Receiver No: 01
Then, you select BIND menu option on Taranis. The Taranis will chirp. The LEDs on X8R might change. It should now be Bound. Exit Taranis menu. Power down X8R and remove jumpers. Power-up everything again and it should be working like before.
Model #2 will use Receiver No: 2, and so on.
The green LED on X8R should be on (and maybe flickering). If basic FrSky Telemetry is working, that's a good sign. The props were off so I tested Arming and it worked fine. Taranis programming it still there.
While I haven't flown it, I re-connected to MissionPlanner and there doesn't seem to be any missing programming or re-calibration needed. The Binding seems to be completely separate from all that. The one exception is FailSafe Mode. Either using OpenTX Companion (or conventional way at RX itself) you need to set FS Mode from "Hold" back to desired "No Pulses". Then, re-test Fail-Safe with FC.
In retrospect, I should have done this in the beginning or sooner. Not only does it simplify FC-RX wiring, the suggested Binding Mode-4(D16), enables a whole set of new channels.
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