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Old Jun 01, 2012, 08:03 PM
2Vision-Air
bakchos's Avatar
Canada, QC, Blainville
Joined Aug 2009
2,120 Posts
Quote:
Originally Posted by vertcnc View Post
Check what sensor is selected in the menu.
Ohh +1 on this ideš !!
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Old Jun 02, 2012, 01:55 AM
Registered User
Norway
Joined Aug 2011
243 Posts
mine is also showing 0.5A all the time, i thought it should be like that,cus of the components,like rx,osd,servos,bec?
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Old Jun 02, 2012, 02:19 AM
Registered User
Germany, SA, MD
Joined Sep 2011
140 Posts
in the menue is the 70a selected.

its showing 0.5 too, when the motor is running. the motor has 30A.
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Old Jun 02, 2012, 10:15 AM
Registered User
rcplanes1234's Avatar
United States, IA, West Des Moines
Joined Jan 2010
660 Posts
Mine shows .5 all the time with the motor off, but when I engage the motor it does show correct amp draw.
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Old Jun 02, 2012, 10:33 AM
Registered User
amba's Avatar
Joined Feb 2011
159 Posts
RTH safety question

I understand many folks set receiver FS to low throttle, and OSD FS throttle threshold just above the RX FS level.
Also using THR CUT mix for intentional RTH.

This sounds very logical and easy to use as long as the plane is in flight.

My question regards safety - isn't there a risk of OSD turning the motors ON when the plane is on the ground and THR CUT switch is activated (or if TX is turned off prior to removing flight batteries)?

Thanks
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Old Jun 02, 2012, 11:19 AM
2Vision-Air
bakchos's Avatar
Canada, QC, Blainville
Joined Aug 2009
2,120 Posts
Quote:
Originally Posted by amba View Post
I understand many folks set receiver FS to low throttle, and OSD FS throttle threshold just above the RX FS level.
Also using THR CUT mix for intentional RTH.

This sounds very logical and easy to use as long as the plane is in flight.

My question regards safety - isn't there a risk of OSD turning the motors ON when the plane is on the ground and THR CUT switch is activated (or if TX is turned off prior to removing flight batteries)?

Thanks
yes it is, it has been said many times but we still dont have option to select a minimum altitude or speed for RTH to engage (like OSDPRO from ET)
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Old Jun 02, 2012, 11:52 AM
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amba's Avatar
Joined Feb 2011
159 Posts
Quote:
Originally Posted by bakchos View Post
yes it is, it has been said many times but we still dont have option to select a minimum altitude or speed for RTH to engage (like OSDPRO from ET)
Thanks for the reply. That's just brilliant
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Old Jun 02, 2012, 12:38 PM
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Elcheapo's Avatar
Joined Oct 2007
1,310 Posts
Yep, is brilliant.
Having the autopilot to cut throttle bellow certain altitude or certain speed could cause a fail if you fly low or there is some head wind. People that fly models from cliffs will "love" this feature.
I am the designer of RVOSD but I am also a FPVer. The only time I needed this, was when my plane was running out of batteries few kms away. All I had to do was to set cruise and glide throttle to zero, so the autopilot could glide the plane to a controlled crash landing. And on top of this the ESC I use will cut motor power if it detect the motor is stuck.
For me it was about pondering the benefits added by this feature vs the danger of causing autopilot malfunction. I had decided that I prefer the autopilot to bring the airplane back to home safely, or at least back to safe altitude.
Of course there is always the option to bring this decision to the pilot in the form of a menu item. I know some people will like this. So will be done, but it wasn't top priority on my to do list.
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Old Jun 02, 2012, 01:12 PM
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amba's Avatar
Joined Feb 2011
159 Posts
I didn't mean to offend... it is frustratibg though.
I understand robustness during flight is paramount, but shouldnt it be possible to disengage rth after say fifteen seconds of 'no movment'?
I understand we should all be trained to disconnent batteries after landing, but i really wish the osd could add extra protection for when we make mistakes.
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Old Jun 02, 2012, 01:21 PM
The Flying Circus
ommadawn's Avatar
Adelaide South Australia
Joined Sep 2007
3,793 Posts
I can live without it, being one who regularly flies below zero altitude. (not underground) It is these times that RTH is most valuable, as the chance of loss of LOS is most likely for me.
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Old Jun 03, 2012, 10:27 AM
You can't take the sky from me
Rastislavko's Avatar
Slovakia, Bratislava Region, Bratislava
Joined Jun 2006
748 Posts
Quote:
Originally Posted by Elcheapo View Post
Yep, is brilliant.
Having the autopilot to cut throttle bellow certain altitude or certain speed could cause a fail if you fly low or there is some head wind. People that fly models from cliffs will "love" this feature.
That's true, but if you combine (close to) zero speed with (close to) zero altitude just to disable engine I think it will be safe. I would also not allow autopilot to run engine without proper GPS lock.

One example for all: yesterday I put my RC transmitter too close to the RX antenna on my airplane. Because of very strong signal from UHF the RX went into failsafe. And the autopilot was triggered and started the engine... Very dangerous!

Also, if airplane crashlands somewhere, because of fresnel zone it's almost 100% you'll lost the RC signal. Airplane in the ground with running prop is very dangerous for all witnesses around... Try to thing about this.

I'm also flying on slopes and I know it's easy to fly under the zero (our club airport is on small hill, my friend once recover his airplane from falling down when OSD shows -22m, we call him "mole" since then), but the conditions for speed under 10km/h AND altitude under 10km/h AND failsafe enabled in standard flight are at least very rare, if not impossible. Unlike the possibility of unwanted motor run by autopilot under current condition...
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Old Jun 03, 2012, 01:42 PM
Still hackin'
Thermicdude's Avatar
Port Elizabeth, South Africa
Joined Nov 2005
428 Posts
video distortion

...
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Last edited by Thermicdude; Jun 04, 2012 at 05:12 AM.
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Old Jun 03, 2012, 02:25 PM
Registered Loon
Blackrat's Avatar
Jeffreys Bay South Africa
Joined May 2006
1,294 Posts
new RV ?
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Old Jun 03, 2012, 02:40 PM
Registered Loser :)
mark hitchman's Avatar
New Zealand
Joined Sep 2009
1,928 Posts
Quote:
Originally Posted by Thermicdude View Post
Hi all,
I'm posting this question here because after changing through three cameras and setups the only common factor is my OSD. I'm getting what to me looks like a voltage dropout in the video when high levels of contrast are present. Video performs flawlessly when bypassing the RV. Any ideas....please

http://www.youtube.com/watch?v=Jt0_T82MRik

Also posted on rangevideo forum...
Put a 68 ohm resistor between the video signal line and ground on the VTX side of the OSD. The signal level is too high when seeing all white.
You can try a 100 ohm resistor first and if that's not enough try a 68 ohm.

Mark
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Old Jun 03, 2012, 02:41 PM
Registered Loser :)
mark hitchman's Avatar
New Zealand
Joined Sep 2009
1,928 Posts
Is anyone using a GPS module that doesn't "stall" at 0 degrees?
I have yet to find one.

Mark
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