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Posted by schumixmd | Jul 20, 2015 @ 01:53 AM | 732 Views
My Skywalker Naja is back in service after a short pause. I needed the AP for testing X-UAV One, but now I got two more Autopilots.

This video is a response to FlyBoySee challenge: How much do you trust your autopilot?
Well, you can decide by yourself how big is my confidence.
This was the first flight after trimming the plane. No PID tuning - the PIDs are from Skywalker preset. P.S. I've used Launch mode even in the first flight, as you can see, the wind is quite blowing at about 6-7 m/s.

Skywalker Naja and MFD AP Launch mode (1 min 41 sec)

Posted by schumixmd | Jul 12, 2015 @ 04:53 PM | 1,319 Views
flying on rails .. literally.
Speed Rail (4 min 25 sec)

Posted by schumixmd | Apr 06, 2015 @ 04:10 PM | 4,161 Views


Introduction:

X-UAV One was one of the most awaited planes at the start of this season.
It got a place in our hearts by two unique features, not seen on the market until now.
All FPV pilots around dream about a plane that will have an unobstructed view of the camera while they're not limited on the propeller size.
X-UAV came with a solution for that request - boom prop assembly - and on top of that they included an extra feature that made their plane unique - virtually indestructibly foam from which it is made, and in the nose they pre-installed a servo gimbal. I will talk later about all of them.

Usually I do video reviews starting with the "Unboxing part", but this time I didn't resist and opened the box right away, much more I started to build it in the first night.

What's in the Box:

Anyway, at least let me list what was in the box.
The ONE came in a shipping box only. The shipping weight is only 2.2kg. Still there were room in the box for few extra bubble wrap material, but they decided the foam is so indestructible that it does not need it.

In the box I have found:
  • Small manual with few pictures showing in general how to assemble the plane, and 4 pages of warnings about LiPo batteries and other unneeded stuff for anyone except a beginner.
  • A long glass fiber wing spar - while the box is only 110cm long the spar is 122cm. Actually this is the only picture of the box that I have, which shows how the spar was fit in the box.
  • Another shorter glass fiber wing spar.
  • The fuselage itself.
  • The carbon tail-boom with the boom prop assembly and two servo extensions for rudevators servos pre-installed.
  • The v-tail parts.
  • A piece of soft plastic pre-molded so that it can be glued underneath the plane, to protect the belly on the landing.
  • A bag with some hardware, push rods, clevis, horns, hinges, bolts, two pieces of glass fiber for the wing and bolts, two more servo extensions, three pieces of sticking tape and a zip tie. Virtually everything needed to assembly the plane - except electronics.


Posted by schumixmd | Mar 02, 2015 @ 03:00 AM | 2,682 Views
Foxtech HorzonHD v4 review Part 3: RX Connection (9 min 56 sec)


Side note to the video:
The problem described, I was able to reproduce only using DragonLink RX's I have.
I was not able to replicate the problem with Spektrum DX8 and OrangeRX 6ch.
Posted by schumixmd | Feb 14, 2015 @ 03:18 AM | 4,487 Views
Hello,

Few times I've been asked how to calibrate the Current Sensor on MFD AP, and why I do it so.
First of all I would like to begin with calibration procedure:

1. Disconnect everything from AP
2. Connect camera and video tx to AP. Alternatively you can connect video output directly to monitor/goggle.
3. Connect RX to AP via PWM or PPM and power the RX from a BEC connected to a LiPo.
4. Connect current sensor to your AP via 4 pin cable.
5. Power the AP from any 3s lipo, can be the same used to power RX in point 3.
6. Now your AP should work and you must see the OSD on the screen.
7. Connect a LiPo to current sensor. Be sure there is nothing connected to CS except lipo and the sensor is connected to AP as per point 4.
8. In AP go to Sensor Settings
9. With a multimeter measure the voltage on the lipo connected to current sensor
and then calibrate the voltage in menu(SENSOR SETTINGS -> CAL. VOLT ), so that you see the same voltage on the screen
10. Your done! Disconnect everything and connect as you need, try and report back if it worked for you.

Now, why it is needed to follow this procedure - Actually it is for beginners that will ensure maximum accuracy of your calibration.
Shortly this procedure can be explained like this: before calibration you should ensure no current is flowing thru CS, that means nothing should be powered via CS.

The calibration procedure stores in AP the value that CS IC outputs when the current draw on CS is 0(zero). But if you will have something powered from CS (video tx for example), then that amount of current drawn will be considered as 0 and it will not be calculated later in flight, and the OSD will show smaller values for Instant current consumption and Cumulative milliamperes.

Thanks
Schumixmd
Posted by schumixmd | Jan 29, 2015 @ 02:39 PM | 3,346 Views
Well guys,
before buying a SpiroNET Patch I decided to test one, but no one near me is flying FPV, so I had to improvise!
My improvisation was to made one myself. Of course the performance will not be as original one, but at least I'll have an idea.
Don't think #ImmersionRc will kill me for that ... I hope.
On the first one, I have made a big mistake and made it mirrored. Maybe it will be LHCP but I am not sure, and I had to correct it fast because the weekend is coming. The second time I decided to make two at a time

Cutting double-sided PCB.
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Applying antenna template on PCB.
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Etching the PCBs in 100ml Hydrogen Peroxyd + 100g citric acid + salt
...Continue Reading
Posted by schumixmd | Dec 30, 2014 @ 01:47 AM | 2,537 Views
I have never ever requested things like this. I was every time trying to solve everything by myself, but now I can't do it all alone.

My friend need help of all generous peoples around, therefore I would like to post this request also here.

The link on IndieGOGO campaign is bellow. This has nothing related to RC. All you get back from this contribution is my input to RC community.
http://igg.me/p/1066020/x/8483522

Sorry guys, I know this is absolutely off topic.

Thank you all and Happy New Year!
------------------------

Update 19/01/2015: Unfortunately the campaign until this moment didn't raise any funds, and my friend asked me to close the campaign since a new campaign was started by a local Non-Profit organization.
http://savelife.info/eng/needhelp/sofia-sili/
Posted by schumixmd | Dec 28, 2014 @ 01:12 PM | 2,040 Views
Well, I have finally come to a conclusion, and here is what I think:

FPVModel.com Motor Review - Part3: Conclusion (6 min 10 sec)

Posted by schumixmd | Dec 21, 2014 @ 11:52 AM | 2,524 Views
660mm quad with FPVModel MC-3508 700kv motors on 3s. Not intended for acro flight.

Killin'It (3 min 40 sec)

Posted by schumixmd | Dec 13, 2014 @ 12:16 PM | 3,410 Views
Today I have test flown the FatCat quad for first time. I called it FatCat because it is a little bit on heavy side. Take off weight was 1550 with 3s3000mah pack, mobius, and ET eLogger. I had two fresh charged packs with me, and aimed for a 5min flights.

This weren't just hover flights, nor 3d flights, but somewhere in the middle, and everything LOS.

Long story short:
- in both 5 minutes sessions I have consumed around 1400mAh of 3000.
- hover power is averaging 160watts.

Here I am attaching logs from both flights and the predictions from ecalc.ch with T-motor MN3508 so everyone can compare how FPVMoldel motors perform versus T-motor. I would say - they are performing the same but cost different.
Posted by schumixmd | Nov 28, 2014 @ 02:33 PM | 2,678 Views
FPVModel.com Motor Review - Part1: Unboxing (9 min 18 sec)


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Update:
Quote:
After speaking with the seller, I have identified that the blue paste inside the motor is actually balancing material. Which means that these motors comes already well balanced.

Posted by schumixmd | Nov 27, 2014 @ 04:44 AM | 3,277 Views
Got something to work on. So surprised that I couldn't resit to post a photo.
Stay tuned for updates.

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Posted by schumixmd | Aug 28, 2014 @ 03:19 PM | 3,770 Views
Well guys, not that I have reinvented the wheel. I am just proud that after 3 years I have finally built it, my UHF Relay that will allow me to use DragonLink v1 module with my Hitec Aurora 9 or Spektrum DX8 wireless and trouble free.

The most important point is that because DL v1 does not have auxiliary head tracker port I wasn't able to use Fatshark head tracker because Aurora does not support it, but on Dx8 the trainer port was busy with DL module. Now, on the DX8 the trainer port will be free and I will be able to finally use the tracker, of course - after I will get an ppm capable spektrum receiver.

UHF Relay Box (3 min 37 sec)

Posted by schumixmd | Jul 09, 2014 @ 07:43 AM | 4,736 Views
Hi everyone,

so, our friend HobbyKing shock us again with their new product.
This time they listed an alternative to GOPRO camera at 1/3 of it's price.

Turnigy HD ActionCam 1080P Full HD Video Camera w/Waterproof Case

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Posted by schumixmd | Jun 07, 2014 @ 02:02 PM | 4,597 Views
Not much to say! Went out for slope soaring!

Slope and thermal soaring with Phoenix2000. (3 min 35 sec)

Posted by schumixmd | May 25, 2014 @ 07:40 AM | 3,701 Views
Today we went flying around!

No more testing, only enjoying the scenery, but noticing so high thermal activity we did not resist to see if this plane is good to go thermals.

The answer is quite clear - the plane is quite good for thermals, much more if you try to work them out. We didn't put any effort. We just flew around the mark where plane climbed throttle off. Kinda fools, but look how it goes.

Sorry for the bad quality. Still can't get decent quality from EasyCap Someone willing to donate a DVR?

Skywalker Naja Working Thermal (4 min 44 sec)