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Old Jan 27, 2013, 04:56 PM
um.. yeah, I can make that fly
Carlos230023's Avatar
United Kingdom, Milton Keynes
Joined Jun 2007
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1.65f is an enormous amount of power to store. I would go for 1000uf at the most, brownouts only tend to happen for nanoseconds. If it lasts longer than that I think you have bigger problems :P

CJ
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Old Jan 27, 2013, 05:10 PM
Mobius Cables... I got em'
chanyote66's Avatar
United States, TN, Oak Ridge
Joined Dec 2011
3,873 Posts
Quote:
Originally Posted by Carlos230023 View Post
1.65f is an enormous amount of power to store. I would go for 1000uf at the most, brownouts only tend to happen for nanoseconds. If it lasts longer than that I think you have bigger problems :P

CJ
yes, the super caps are only 1g each for .33f but their output is low, this combined with the two 1000uf provides rock solid power

so now i just need similar setups for the OSD...
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Old Jan 27, 2013, 05:13 PM
Mobius Cables... I got em'
chanyote66's Avatar
United States, TN, Oak Ridge
Joined Dec 2011
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Originally Posted by GLADUS63 View Post
I would just say that the more things you add, the more weakness points / cause of trouble you add.

If just a cap become shorted, it's all the system that would be out of order...

Cedric
so far all of the capacitors are directly soldered to the equipment, epoxied on and then shrink-wrapped. the chance of a short is lower than the chance of a brownout.

Chris
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Old Jan 28, 2013, 12:06 AM
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France, Limousin, Limoges
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Originally Posted by chanyote66 View Post
so far all of the capacitors are directly soldered to the equipment, epoxied on and then shrink-wrapped. the chance of a short is lower than the chance of a brownout.

Chris
So let us now how it goes.

I have changed mine for going in my penguin, and when configuring it (changing value of OSD) using video, I have some reboot, but may be it's normal...

Cedric
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Old Jan 28, 2013, 09:12 AM
Mobius Cables... I got em'
chanyote66's Avatar
United States, TN, Oak Ridge
Joined Dec 2011
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Quote:
Originally Posted by GLADUS63 View Post
So let us now how it goes.

I have changed mine for going in my penguin, and when configuring it (changing value of OSD) using video, I have some reboot, but may be it's normal...

Cedric
I haven't seen reboots but I have seen twitching servos and glitches in video. Probably from the CPU focusing on writing data to memory.

Chris
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Old Jan 29, 2013, 03:24 AM
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is XLator support FY- DoS ?
look like FY-DoS IMU more stable..
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Old Jan 29, 2013, 05:15 AM
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I have a DLUHF/DOSD setup on my Easystar II controlled from an Er9x. The camera pan/tilt servos are operated by pots on the Er9x using two channels of the DL receiver.

While there is very occasional chatter in the rudder/elevator/aileron servos, the chatter in the pan and tilt servos is constant and sufficient to be a nuisance in the video image.

Is this an Er9x issue or is something else triggering the noise such as the BEC powering the receiver?

Any suggestions?
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Old Jan 29, 2013, 05:40 AM
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Romania, Bucharest
Joined Jul 2010
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I solved such a servo noise by adding a ferrite ring on the PPM cable coming from the RX (I have FrSky). The issue was removed instantly.
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Old Jan 29, 2013, 08:11 AM
'FPV'er...not a "LOS'er
Vantasstic's Avatar
Las Vegas, NV
Joined Sep 2003
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Quote:
Originally Posted by Mehari View Post
I have a DLUHF/DOSD setup on my Easystar II controlled from an Er9x. The camera pan/tilt servos are operated by pots on the Er9x using two channels of the DL receiver.

While there is very occasional chatter in the rudder/elevator/aileron servos, the chatter in the pan and tilt servos is constant and sufficient to be a nuisance in the video image.

Is this an Er9x issue or is something else triggering the noise such as the BEC powering the receiver?

Any suggestions?
What servos and video freq are you using? I had servo chatter issues with cheap (HXT-9G) servos and 900MHz VTX. I replaced them with higher quality servos (Spektrum/HS-55 type) and the chatter disappeared.
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Old Jan 29, 2013, 08:12 AM
'FPV'er...not a "LOS'er
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Las Vegas, NV
Joined Sep 2003
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Quote:
Originally Posted by hippojia View Post
is XLator support FY- DoS ?
look like FY-DoS IMU more stable..
Dunno... I use the XLator with the FY-30 just fine. Never heard of the FY-DoS.
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Old Jan 29, 2013, 11:55 AM
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San Marcos, CA
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FY-DOS is a full autopilot system .. not just an IMU ..

So probably doesn't make sense anyway to connect them to each other since DragonOSD has it's own autopilot.
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Old Jan 29, 2013, 02:51 PM
Koo
A semi-advanced FPV newbie
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United States, OH, Oxford
Joined Mar 2012
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Quote:
Originally Posted by futurebreeze View Post
I solved such a servo noise by adding a ferrite ring on the PPM cable coming from the RX (I have FrSky). The issue was removed instantly.
Just curious, what FrSky receiver do you have and how do you get PPM from FrSky?
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Old Jan 29, 2013, 03:29 PM
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Quote:
Originally Posted by Vantasstic View Post
What servos and video freq are you using? I had servo chatter issues with cheap (HXT-9G) servos and 900MHz VTX. I replaced them with higher quality servos (Spektrum/HS-55 type) and the chatter disappeared.
I have Hitec HS65's on the pan/tilt and MPX Nano-S's for surface control. I have tried swapping around with other servos (Spektrum and INO HG-D202HB's) but the chatter does not change.

The chatter is there without the VTX connected.

Before I split the fuselage again to try a ferrite ring on the PPM line, any other thoughts?
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Old Jan 29, 2013, 03:43 PM
um.. yeah, I can make that fly
Carlos230023's Avatar
United Kingdom, Milton Keynes
Joined Jun 2007
3,751 Posts
Braid your servo leads and ESC leads. And your PPM one for that matter. It might reduce the cable length a bit but it helps massively with em interference.

CJ
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Old Jan 29, 2013, 03:57 PM
Mobius Cables... I got em'
chanyote66's Avatar
United States, TN, Oak Ridge
Joined Dec 2011
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Quote:
Originally Posted by koo29 View Post
Just curious, what FrSky receiver do you have and how do you get PPM from FrSky?
all of the new telemetry ones have CPPM... works great even the little 4ch one has CPPM and RSSI output!

Chris
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