Bax,

I'm rather sure I saw S-BUS Gyro programming feature in some early video of the MZ18 but now when I need it I simply can not locate the menu [&o]

Also manual is silent about the feature but futz2011-futaba-catalog.pdf -marketing material states:
"
• A seriaI interface — that works like Futaba’s stand-alone CIU-2 serial interface for
programming S.Bus and S.Bus2 servos, as well as Futaba gyros like the GY520."
and
• Built-in programming tools for S.Bus
programmable servos and gyros
such as the GY520

I have used full hour to browse through menus but can only find SBUS servo programming menu Please advice.

and final question: Any idea when fuel level SBUS2 sensor will be available? Will it be compatible with JetA1?


Cheers,
Ilkka

This is explained on page 32 of the instruction manual. You program a device such as the GYA750 at the device, itself, but you also use parameters in the gyro and governor menus of the transmitter. You do not program the device from the transmitter.

We have no information on a fuel quantity sensor, so we cannot comment on it. Whenever, or if, Futaba releases information, we'll know.

Thanks for the reply. Unfortunately I'm not sure if I understood your message.. page 32 is referring only to SBUS servo and Sensors. How I can set GY520 to SBUS operating mode? (I don't own CIU-2) Or are you saying it's not possible even Futaba marketing material is stating very clearly that the feature and the menu is there. Please refer to the attached picture where the SBUS Gyro menu is highlighted with the following text:

"A seriaI interface — that works like Futaba’s stand-alone CIU-2 serial interface for
programming S.Bus and S.Bus2 servos, as well as Futaba gyros like the GY520."

OK, it depends upon the device. The CGY750 is not programmed via the transmitter.

The GY-520 gyro is not a S-Bus unit. It would need an S-Bus decoder to operate on the S-Bus:

FUTM4191 SBD-1 SBUS DECODER 1600MM US$69.99
FUTM4192 SBD-1 SBUS DECODER 1100MM US$67.99

These parts can be ordered through any hobby retailer who sells Futaba systems and accessories.

To program a unit from the transmitter, though, you just plug it in and enter the servo programming screen. The available parameters will show up as the transmitter senses the device that's attached. Otherwise, your best bet is to purchase the CIU-2 interface and download the software to do it from your PC.

Oh Please... Now I'm getting angry [:@] It's printed on top of GY520 cover that it's S.Bus gyro! Please refer to the attached picture. There is also PC software version for CIU-2 to set S.Bus channels and other parameters of GY520. And you are trying to sell me also SBD-1 decoder which I won't need eventually? and CIU-2?

I have tried the servo programming screen several times with the gyro and it's not working. It seems to me that Futaba has been missleading customers with false marketing and whole feature is missing from MZ18. Why I should pay extra and purchase one extra Futaba gadget to get programming done? I already bought the damn expensive gadget, MZ18 that was claimed to act as CIU-2 with gyros.

Ps. could you please clarify the other question related to receiver external voltage usecase. I have seen the drive & Jet ECU batteries works well but I want to be sure if there is reliability issue that could cause an expensive crash.

Sorry, I was reading our web page and was thinking about how it's programmed. Here's what we say about programming the GY520:

http://www.futaba-rc.com/gyros/futm0807.html

"2 Ways To Program!

Directly, using the GY520's push-button and 2-color LED.
Remotely, using a PC and the optional CIU-2 USB interface. Both required. Click here to download PC software (zip file)."

If you want to program it, you'll need the GYLink software and a CIU-2 USB interface. You need to connect the gyro to the computer via the CIU-2 interface. You cannot plug the gyro directly into the computer.

The instructions for the PC-Link software detail how to set the GY-520 to the S-Bus. It's on page 8.

If you're going to run it on S-Bus, it looks like you have to connect an S-bus output to the gain channel, and an S-Bus output to the rudder channel. The CIU-2 interface and GYLink software are used to set which channels of the transmitter will be sending gain and rudder information.

However, the instruction manual for the gyro, itself, doesn't say anything about the S-bus. We'll ask Futaba for some clarification on this.

While waiting clarification from Japan I dug this bit further and would like to inform others if you happen to need this feature.

It seems that there is no need to have CIU-2 at all in order to utilize SBUS control method (if GY-520 has default setup values)!

The Gyro can be connected by default with SINGLE cable to receiver's SBUS output (I think it was rudder channel input of the gyro to sbus output of the RX but may remember wrong now). Then Rudder = SBUS channel2 and Gain = SBUS channel3 (unless default values was changed earlier with CIU-2 by someone). So just set function assignments on your transmitter accordingly and use the sbus signal. If you need to change default channels then CIU-2 is necessary as MZ18 can not do it like with Servos

Regards,
Ilkka

Please note that the reference requires you to use default settings. Any custom settings will have to be done via the interface.