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Old Sep 29, 2012, 12:24 PM
Gary
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United States, MD, Salisbury
Joined Mar 2011
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Jury rigged my MK USB-ttl to work with the Tiny OS D cable . Took a bit of fiddling but finally got it to connect by changing the com port from 4 to 10 and running FVP software in XP mode on my win7-64bit machine.
? If I'm running 4s do I need to 16.8 (fully charged) for the voltage calibrate in the upper right or leave it the default 12.2, OR change it to the 14.8 standard lipo voltage? Sorry bur can't seem tot find this info anywhere? I do have a Watts-Up I can pur inline to measure actual voltage etc if necessary?
Thanks G
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Old Sep 29, 2012, 05:15 PM
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Tucson Avra Valley, Arizona, United States
Joined Jul 2002
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Gary

Ask your question at:
www.FPVlab.com in the Skylark forum.

There's a tutorial on how to calibrate the system.

Neal
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Old Sep 29, 2012, 05:57 PM
Gary
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United States, MD, Salisbury
Joined Mar 2011
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Neal: Thanks, I found the tutorial. Actually my voltage was not being displayed, the first 4-5 times I tested it, but today...bingo....and it worked again after that. And I didn't even calibrate it yet. So I guess it was some weird glitch. I left it on 12.2v but it did show my 16.8v...finally.
Gremlins...get cha' every time!
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Old Oct 04, 2012, 01:14 PM
Gary
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United States, MD, Salisbury
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Does the GPS wire have to face "forward" (like the Naza) for it to measure properly?
Thanks Gary in Salisbury, MD
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Old Oct 05, 2012, 04:14 AM
Fly Chitty Chitty Bang Bang!
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Central California USA
Joined Feb 2011
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Other options

Quote:
Originally Posted by glmccready View Post
Jury rigged my MK USB-ttl to work with the Tiny OS D cable . Took a bit of fiddling but finally got it to connect by changing the com port from 4 to 10 and running FVP software in XP mode on my win7-64bit machine.
? If I'm running 4s do I need to 16.8 (fully charged) for the voltage calibrate in the upper right or leave it the default 12.2, OR change it to the 14.8 standard lipo voltage? Sorry bur can't seem tot find this info anywhere? I do have a Watts-Up I can pur inline to measure actual voltage etc if necessary?
Thanks G
If anyone has some serial converters laying around this one also does the trick.
The extra GPS cable was used. Note that the red + power line is not to be connected.
For anyone interested this is the definition of the RX TX line colors.
Works great at 115K baud.
This board can be obtained from Sparkfun in Colorado.
https://www.sparkfun.com/products/718?
The shipping is faster, however the cost is a little higher.
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Last edited by EarthOrbiter; Oct 05, 2012 at 04:54 AM. Reason: Source for board in US
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Old Oct 05, 2012, 04:22 AM
Fly Chitty Chitty Bang Bang!
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Central California USA
Joined Feb 2011
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Gps wires

Quote:
Originally Posted by glmccready View Post
Does the GPS wire have to face "forward" (like the Naza) for it to measure properly?
Thanks Gary in Salisbury, MD
The Naza has a compass built with the gps module.
That is the reason direction is important on the Naza.
The most important thing I do with any gps rcvr is separate
as far as possible from a nearby video transmitter if using it with FPV.
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Old Oct 05, 2012, 08:17 AM
Gary
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United States, MD, Salisbury
Joined Mar 2011
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Earthorbitoer: thanks! Since I didn't see anything about it in the manual or anywhere online I thought direction of the GPS must not be important. I put the GPS out on the arm as far as possible without being under a prop. Seems like everything needs to be as far as possible from everything else...lol
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Old Oct 05, 2012, 06:05 PM
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Canada, BC, Vancouver
Joined Sep 2009
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Can this osd display rssi in %? seems in all the pictures its all in X.X volts
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Old Oct 05, 2012, 06:06 PM
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United States, NC, Wilmington
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Yes
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Old Oct 06, 2012, 03:12 AM
Fly Chitty Chitty Bang Bang!
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Central California USA
Joined Feb 2011
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Hobby king compatibility.

Using the Hobbyking Tiny OSD. It seems they are selling them for Skylark with the HK branded.
It has a barometer, and all the features of the Skylark OSD III hardware wise.
After digging some information this unit can be programmed with firmware V 2.8 from:
http://fpvlab.com/forums/showthread....k-OSD-firmware
The Skylark website download seems to work with this build except for the flight summary option.
I also noticed that the calibration works way better with the 2.8 from skylark.
So if you are using this OSD upgrade to V 2.8 then calibrate according to this URL.
http://www.rcflighttest.com/home/201...urrent-sensor/
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Old Oct 12, 2012, 11:43 PM
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Sydney NSW
Joined Mar 2010
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Any guru's out there able to help me with a cropping issue? I'm quite new to FPV so I have no idea where the issue lies.

Long story short, I've jammed this OSD (HK Tiny OSD variety) in and the OSD is cropped at the bottom so I don't see the voltage, mAh draw, distance and direction to home. This is all pretty important info so I'd rather it be displayed. I've attached a screenshot of what I can see, it's almost like it's overlaid itself too far from the top of frame.

My gear:
Fat Shark Predator 5.8ghz (integrated rx)
ImmersionRC 5.8ghz 600mW TX
Fat shark Pan/Tilt, 420TVL NTSC cam
Hobbyking Tiny OSD

Any ideas where the weakest link is?
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Old Oct 13, 2012, 10:33 AM
Gary
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United States, MD, Salisbury
Joined Mar 2011
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mrlanders: Mine does that too! I think it is actually not displaying the data at all. If I unplug the power and then then replug it often works when it reinitializes. Not sure if it has something to do with not getting a lock with the GPS or not. Watch you initialization sequence.
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Old Oct 13, 2012, 04:43 PM
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United States, NC, Wilmington
Joined Aug 2011
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This comes from powering the osd first then the cam. Solution is simple just hit reset on the osd after the system is all turned on
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Old Oct 13, 2012, 08:09 PM
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USA, NH, Alstead
Joined Oct 2007
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What is the difference between Skylark Trace III and Trace IV models?
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Old Oct 13, 2012, 10:57 PM
Gary
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United States, MD, Salisbury
Joined Mar 2011
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Mashton: thanks!!!
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