SpartanRC DS760 Gyro Review and Setup Vids

[mporlier]

Angelos,

A glitchy switch, I dont think so. My X9303 is brand new, I use the ruder D/R switch and I have the same value for both position. On top of this, once it starts getting in programing mode, it is hard to make it stop. It does it sometimes more than 5 times in a row.

[Angelos]

th3tick,
3 toggles between modes. "AVCS to Rate to AVCS to Rate" or "Rate to AVCS to Rate to AVCS". Yes more toggles would reduce the chances but it will get harder to do them during the calibration time window. Keep in mind that the function of the switch changes once calibration is done.

mporlier,
I was referring to the receiver and radio gear power supply, not the X9303. All mechanical switches generate glitches at the switch on moment. In case of electric models where people often plug the ESC/BEC connector to the battery these glitches would be even worst. It all happens very fast but they ds760 may have already been up and running and could see these as a command to enter setup mode. By ignoring the gain input for fraction of a second at the start I am pretty certain that this go away.

-Angelos

[mporlier]

I undersrand. I use the Align 2 in 1 first generation. The one with transparent heat shrink on the switch PC board.

[th3tick]

th3tick,
3 toggles between modes. "AVCS to Rate to AVCS to Rate" or "Rate to AVCS to Rate to AVCS". Yes more toggles would reduce the chances but it will get harder to do them during the calibration time window. Keep in mind that the function of the switch changes once calibration is done.

I understand, but I still think a couple more would be a better way around it. I'll trust you to experiment and find what works best.

One other thought I had was to put a "config lock" option into the software. That way it would take a cable and laptop to decide you want to change it once you've decided it's set, and would eliminate the possibility of accidentally going into setup.

John

[Pinecone]

The other thing, which mode did you bind the Rx in? Did you re-bind after completing the entire setup of the heli?

The Rx sends out the gain setting at binding, then when it links to the Tx it sends out what it gets from the Tx. There is a place that one transition may occur.

[mporlier]

Pinecone I must admit I can not answer your question. So if this is one thing that can help me I will re bind.

Right now I am uploading a video I just did where you clearly see the gyro entering setup mode bu itself. I will post it soon.

[mporlier]

In the video you can not see clearly but I show the value of the gyro. Pos 0=72 and Pos 1=65

S9dJiP5TyJ4

[mporlier]

Angelos,

The switch is out of the question. I have left it at the ON position and disconnected the battery. Same results. I also tested with the TX at 3 meters since being to close is not recommended (as per JR manual). Same results.

My mechanical setup was good before I changed the TX/RX so I do not see what could have happened. Like I said earlier, the heavy tail wag appeared after 4 min in flight. I had burned 1 1/2 gallon before the event so the heli was doing OK.

This is frustrating and costly.

[Angelos]

mporlier,
knowing how the software works I can tell you there is only one way to enter setup mode and that is by the ds760 detecting 3 changes of the gyro mode within the calibration period. From where I am I can't find out what in you system causes the gyro to see these 3 transitions erroneously. But I am pretty sure that it is a power on glitch as the different electronics system stabilise. And as I already mentioned I think it will go away simply by ignoring the gain signal for a fraction of a second at power on. I will produce a firmware update for it in the next few days. Please be patient as any changes need to be done carefully and property tested. Meanwhile if you have a suitable NiCD pack try and see if it still happens with it so we can see if the regulator has any influence.

What's the gyro gain scale on the X9303?
Is it 0% (full gyro gain) - 50% (zero gyro gain) - 100%(full gyro gain) like the DX7...
or 100%(full gyro gain) - 0% (zero gyro gain) - 100%(full gyro gain)?

How far out is the ball link on your servo and what tail servo are you using?

-Angelos

[mporlier]

mporlier,
knowing how the software works I can tell you there is only one way to enter setup mode and that is by the ds760 detecting 3 changes of the gyro mode within the calibration period. From where I am I can't find out what in you system causes the gyro to see these 3 transitions erroneously. But I am pretty sure that it is a power on glitch as the different electronics system stabilise. And as I already mentioned I think it will go away simply by ignoring the gain signal for a fraction of a second at power on. I will produce a firmware update for it in the next few days. Please be patient as any changes need to be done carefully and property tested. Meanwhile if you have a suitable NiCD pack try and see if it still happens with it so we can see if the regulator has any influence.

What's the gyro gain scale on the X9303?
Is it 0% (full gyro gain) - 50% (zero gyro gain) - 100%(full gyro gain) like the DX7...
or 100%(full gyro gain) - 0% (zero gyro gain) - 100%(full gyro gain)?

How far out is the ball link on your servo and what tail servo are you using?

-Angelos

The gyro gain scale on the X9303 is like the DX7
0% (full gyro gain) - 50% (zero gyro gain) - 100%(full gyro gain)

I have tested with a 4.8V NiCD battery pack directly in the receiver, same thing.

[sonofcar]

thats odd it does that, all my does is not sense direction which is great when you take off:shock::confused:. Everything else works as it should with my set up 9303 2.4 r291 rec power with fromaco reg an batts.

[leeph]

I've seen this problem too.. I've got a DX7 with AR7000 on a stock T-Rex 500 and my gyro does occasionally go into setup mode when connecting battery to ESC - if I leave transmitter on and disconnect and reconnect battery to ESC, it will often do it again. If I switch transmitter off and start from scratch, it will usually work. Sounds like the new firmware will stop this problem though which will be nice.

Just my two-cents :)

[Palmboom]

Maybe a stupid question but:

I have purchased a DS760 for my Trex 500. There are two ways to set it up:

With stick programming
With a USB-cable

I'm using the USB-cable. I was wondering if I need to do the first setup of the gyro by the stick programming. Is it possible to the complete setup with the USB-cable.

Are there different options when comparing stick programming to USB programming??

Thanks Sander.

[franticf]

Palmboom

You could set the servo type using the USB cable but use the setup video at the beginning of this thread for the binding procedure, servo direction correction and endpoint setup using stick programing. You can then upload and save your configuration.

Fred

[mporlier]

mporlier,
knowing how the software works I can tell you there is only one way to enter setup mode and that is by the ds760 detecting 3 changes of the gyro mode within the calibration period. From where I am I can't find out what in you system causes the gyro to see these 3 transitions erroneously. But I am pretty sure that it is a power on glitch as the different electronics system stabilise. And as I already mentioned I think it will go away simply by ignoring the gain signal for a fraction of a second at power on. I will produce a firmware update for it in the next few days. Please be patient as any changes need to be done carefully and property tested. Meanwhile if you have a suitable NiCD pack try and see if it still happens with it so we can see if the regulator has any influence.

What's the gyro gain scale on the X9303?
Is it 0% (full gyro gain) - 50% (zero gyro gain) - 100%(full gyro gain) like the DX7...
or 100%(full gyro gain) - 0% (zero gyro gain) - 100%(full gyro gain)?

How far out is the ball link on your servo and what tail servo are you using?

-Angelos

Hi Angelos,

When is the new firmware comming out?

[stupidz]

Is there anyone knows when and where can I buy 760 in US.
I see many stores out of stock.....

[MarkWebber]

I don't think anyone in the US has 'em. Spartan should be able to start shipping restock orders soon.

[genexis]

Available in HK, for $255 excluding shipping.

[Gscott]

Has there been any update on the issues described earlier? Mine does the same thing and acts very strange at times. Here is the overview of what I have experienced:

1.) Most of the time it will not go into programming mode. I have it setup on a 9303 using the gyro menu and tied to the idle up switch. Normal is set to 0% and Idle 1 and 2 are set to 100%. I would say over 90% of the time it will not go into programming mode no matter how hard I try.

2.) It has forgotten end point settings twice now.

3.) It will not initialize unless I turn the heli on with the radio set to rate mode. If the radio is set to HH the gyro never initializes. UPDATE..I think I may have fixed this issue by rebinding the heli in HH mode but with all the other issues I'm not sure I trust it.

4.) Tail wags badly. Gain adjustment did not make any difference. I started at 70% and went as low as 65% and as high as 85%. On the 9303 rate mode starts at 50% so I'm running out of room on the lower end. I have checked the tail bearing and they seem fine. Also no binding in the linkage.

5.) This is the most disturbing. On one occasion the gyro has gone into setup mode seemingly on it's own. As discussed in point #1 I am using the 9303 gyro menu. I had normal set in rate mode (0%) and idle 1 and 2 (70% ea) in HH mode. Now for the problem. I had finally given up trying to get the gyro into setup mode for the time being and turned it off and then back on and the gyro initialized into rate mode (this was before the rebind and the gyro would only initialize in rate mode). I left the heli in normal and proceeded to work on my pitch curves and swash centering. After about 10-15 minutes I switched from normal to idle 1 to set that curve and to my surprise the gyro went into setup mode. Please don't tell me this is impossible because I saw it with my own eyes with the heli on the bench.

At this point I'm very nervous about flying this on my $2k+ Synergy. It seems to be working but the fact it went into setup after being powered on for 10 minutes makes me very concerned. That would have been disasterous had it happened in the air.

[mporlier]

Has there been any update on the issues described earlier? Mine does the same thing and acts very strange at times. Here is the overview of what I have experienced:

1.) Most of the time it will not go into programming mode. I have it setup on a 9303 using the gyro menu and tied to the idle up switch. Normal is set to 0% and Idle 1 and 2 are set to 100%. I would say over 90% of the time it will not go into programming mode no matter how hard I try.

2.) It has forgotten end point settings twice now.

3.) It will not initialize unless I turn the heli on with the radio set to rate mode. If the radio is set to HH the gyro never initializes. UPDATE..I think I may have fixed this issue by rebinding the heli in HH mode but with all the other issues I'm not sure I trust it.

4.) Tail wags badly. Gain adjustment did not make any difference. I started at 70% and went as low as 65% and as high as 85%. On the 9303 rate mode starts at 50% so I'm running out of room on the lower end. I have checked the tail bearing and they seem fine. Also no binding in the linkage.

5.) This is the most disturbing. On one occasion the gyro has gone into setup mode seemingly on it's own. As discussed in point #1 I am using the 9303 gyro menu. I had normal set in rate mode (0%) and idle 1 and 2 (70% ea) in HH mode. Now for the problem. I had finally given up trying to get the gyro into setup mode for the time being and turned it off and then back on and the gyro initialized into rate mode (this was before the rebind and the gyro would only initialize in rate mode). I left the heli in normal and proceeded to work on my pitch curves and swash centering. After about 10-15 minutes I switched from normal to idle 1 to set that curve and to my surprise the gyro went into setup mode. Please don't tell me this is impossible because I saw it with my own eyes with the heli on the bench.

At this point I'm very nervous about flying this on my $2k+ Synergy. It seems to be working but the fact it went into setup after being powered on for 10 minutes makes me very concerned. That would have been disasterous had it happened in the air.

Spartan has been awfully quiet these days. On my customer support ticket I have not updates either.

[leeph]

I don't know if this would help at all, it might for diagnostic purposes. Instead of using the gyro menu, set the channel you've got the gyro gain cable plugged into to be controlled by one of your auxilliary switches, and use endpoint adjustment to set your gain values for rate and heading hold.

Might just be interesting to see if configuring it like this makes any difference. Of course, to enter setup mode, you would now flip your aux switch instead of the flight mode switch.

[jester4]

I'm hoping this gets sorted out soon, so far this gyro/company has no blemishes whatsoever as far as service and track record, let's hope it stays that way. I have a gyro installed and ready to go, but I think I'll hold off until there is a resolution.

[giskard]

I can see Angelos has been active on heli freak today. Would be nice to get an update on the situation really. I flew mine for the first time Sunday and all was well but I am now concerned. I was really pleased with the setup routine and my tail is holding fine (no aeros yet) but I'm starting to get a nagging doubt in the back of my head. As mentioned before the Spartan customer service is usually top notch so I've been expecting a post any day now with a fix or at least an explaination.

[leeph]

I think it's probably a little paranoid to not fly your heli with the DS760 just because a couple of people are experiencing problems. Hundreds of these gyros are flying about with no problems whatsoever. I would only ground your heli if you have experienced this issue while it's on the ground. the people with problems may just have units that are electronically - as opposed to programmatically - faulty.

[MarkWebber]

Gary,

I've not heard of any updates for this issue.

Help me out here as I don't have my 9303 with me. When you say you've got the gyro tied to the flight mode switch at 0, 100 and 100%, what is each % value adding to the equation? I normally fly Futaba so I'm not sure what that does.

I want to know if anyone flying Futaba has experienced any of these issues. I don't recall seeing any but JR/Spektrum. Perhaps there is some compatability issue at work? Just a guess as I've not had the chance to see this happen in person
.
I'm sure what ever it is, Angelos will get it worked out.

As far as grounding your heli just because someone else has seen an issue, I wouldn't see that as necessary. I've been flying these since Angelos let me use the prototype,and with the release of early production and current production models. I've yet to have a problem on my heli's.