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HomeRC & Power✈️Aircraft🚁HelicopterRadio - Futaba FASST › S-Bus Servo Compatibility
01-13-2013 07:45 PM  7 years ago
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2tall

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Crystal Lake, Illinois, USA

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S-Bus Servo Compatibility
I'm a JR 9503 user considering the purchase of the Futaba 14SG-H. I'll also be using a NAZA-H flight stab system - which is billed as "S-Bus Compatible."

My question is, when using a single S-Bus connection between the Futaba RX and the Naza Controller will the Naza output correctly to any digital servo, or when using the S-Bus feature do all of the servos have to be Futaba S-Bus Servos?
"Pay attention...lest the ground rise up and smite thee."
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01-13-2013 08:34 PM  7 years ago
550inTX

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The Colony, TX - USA

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Futaba servos aren't required.

John
aka "thehatguy" everywhere else
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01-13-2013 09:26 PM  7 years ago
2tall

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Crystal Lake, Illinois, USA

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Futaba servos aren't required.
So the Naza-H is able to decode a single cable S-Bus input to the proper output channels using most any flavor of digital servos. I think I need to get on the 14SG-H pre-order list.

Thanks

Jon
"Pay attention...lest the ground rise up and smite thee."
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01-13-2013 10:03 PM  7 years ago
Santiago P

rrProfessor

Dayton

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when using a single S-Bus connection between the Futaba RX
...

The receiver does all the decoding. Because the Naza controller is doing the pitch-roll-yaw traslation, you do not need SBUS servos.

Any digital servo will work fine.

Santiago
Team Minicopter - PeakAircraft.com
FUTABA.USA - Team Kontronik - Scorpion Motors-
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01-13-2013 10:36 PM  7 years ago
2tall

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Crystal Lake, Illinois, USA

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Thanks Santiago - I get that it will work, I just don't get the "Why" it works.

Futaba sells a "Decoder Cable" for use with Non S-Bus servos. Somehow this cable allows these off-flavor servos to know what channel is commanding each. So, my screwed up logic assumes that non S-Bus servos require some sort of help to function in the S-Bus environment. I guess, in my setup, the Naza controller is performing that function, or not.

This may be one of those instances where an increase in thought is directly proportional to an increase in frustration. If it works, don't out think it.

Just glad I don't need to invest in new servos to make the S-Bus thing work in my application.
"Pay attention...lest the ground rise up and smite thee."
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01-13-2013 11:50 PM  7 years ago
Santiago P

rrProfessor

Dayton

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The SBUS connection in between the controller and receiver.

The single Serial-Bus cable sends the commands for all servos and functions.
Then the controller (FBL, Naza , or whatever) translates the RX commands to all the servos, ESCs, special functions, etc.

Is all pretty cool and transparent to the user.

Have fun

Santiago
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01-14-2013 01:37 PM  7 years ago
550inTX

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The Colony, TX - USA

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Use that decoder cable for setting up complex servo networks using Futaba Link software.

http://www.futaba-rc.com/sbus/index.html

John
aka "thehatguy" everywhere else
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