KV FPV

[kataventos]

Hi,

this the first video with the new gimbal. Not easy to tune but I almost found the correct spot. I am using the open source code to it and I also think that it can be a lot better in the future.
I say this because sometimes I see that Z axis have some influence on roll. I was able to minimize the effect but work needs to be done on that code...

Anyway, hope you enjoy the short story

Cheers,
-KV

[e_lm_70]

Are you flying a 'stock' MultiWii 2.2 or you did modify the code for improve stability n gps-hold mode?

Also ... what difference make angle from horizon in gps-hold mode ?

[RCvertt]

Spider_1.jpg

Hi to all,

started this topic to share my FPV flights all over with my Spider.
Some are edited like this one but, no stab software and stuff

Thanks for watching, have fun and fly safe.

Cheers,
KV...

Hi, very good job. So how did you achieve this?

[kataventos]

Are you flying a 'stock' MultiWii 2.2 or you did modify the code for improve stability n gps-hold mode?

Also ... what difference make angle from horizon in gps-hold mode ?

Hi and sorry for the late reply, I´ve been very busy and trying to relax at same time

- Yep, stock multiwii 2.2 on this Multirotor, just some mods but nothing to do with GPS, it works just fine with the awesome job that have been done so far. The only thing that need to be in perfect "shape" is your "meditation" on PID adjustment... believe me "- omega rocks!" like a friend of mine said after some meditation

-Between Horizon and angle the difference is that in Horizon you have Acro mode until you release the sticks to "center" then it will self level like in Angle. To be honest never tried Horizon... or I am in Acro or in Angle... I would recommend you to use Angle with GPS Hold or Return Home, you can also use the config.h in order to change your position in Hold mode for example.


-KV

[kataventos]

Hi, very good job. So how did you achieve this?

Thanks well... to be honest I achieved this by having fun and of course some dedication to the cause, nothing more...

-KV

[kataventos]

And another short story called "Places"...

Thanks for watching, don´t forget to comment and also the Like button

Have fun and fly safe you all,
-KV

[e_lm_70]

Are you flying a 'stock' MultiWii 2.2 or you did modify the code for improve stability n gps-hold mode?

Also ... what difference make angle from horizon in gps-hold mode ?

Hi and sorry for the late reply, I´ve been very busy and trying to relax at same time

- Yep, stock multiwii 2.2 on this Multirotor, just some mods but nothing to do with GPS, it works just fine with the awesome job that have been done so far. The only thing that need to be in perfect "shape" is your "meditation" on PID adjustment... believe me "- omega rocks!" like a friend of mine said after some meditation

-Between Horizon and angle the difference is that in Horizon you have Acro mode until you release the sticks to "center" then it will self level like in Angle. To be honest never tried Horizon... or I am in Acro or in Angle... I would recommend you to use Angle with GPS Hold or Return Home, you can also use the config.h in order to change your position in Hold mode for example.


-KV

PID tuning is something not trivial .. I will try to copy/get inspired from the PID you show in a capture picture here ...

Did you play with NAV_SLEW_RATE on MultiWii ?

I'm thinking to use lower value here ... maybe I can lose some accuracy under windy situation .. but the on board video quality should be better

I add UAV into my MultiWii 2.2 .. that's why your stable copter in GPS mode is very very interesting for me ... since I want to take onboard video from UAV mode.

Thanks

e_lm_70

[kataventos]

Hey,

Did you play with NAV_SLEW_RATE on MultiWii ?

I'm thinking to use lower value here ... maybe I can lose some accuracy under windy situation .. but the on board video quality should be better

I add UAV into my MultiWii 2.2 .. that's why your stable copter in GPS mode is very very interesting for me ... since I want to take onboard video from UAV mode.

Thanks

e_lm_70

Just a small difference as far as I remember the original values...
I think that the main gains should be perfect before anything, I also continue to search on the "autonomous" flight gains and rates under strong winds.
Yes, I saw your video sometime ago, great keep it up.

Cheers

[Noctaro]

Hey KV, thats impressive! For real! Just need to get rid of that tearing and this is some of the best footage i have seen so far. Keep it up!
Did you use a anti-vibration mount on the gimbal?
Greetz Noc

[kataventos]

Hi Noc,

thanks for your kind words but I must disagree, in fact the first video of this page called "Kurtas_A Cebola" was filmed after the second one on this page "Kurtas_Lugares" and in fact my spider with actual setup reached the maximum tuning point
I say this because this frame have hundreds of hours in the air, and because I like my stuff not only well tuned, but also with every thing in it´s place... I now find it hard to get much better than that because of the weight with all the new gear on it versus motors/power, flight time, props etc etc... so, in the past month I took exhaustive lessons from a friend that is an architect (Pro with Autocad) so finally I could start to put all my stupid ideas on paper and just got them finished in Autocad and ready to start cutting yesterday

I wanted to gather a small compact frame exploring the Y6 concept designed for both APAV and FPV with lots of power and flight time. As you can see on the pic it was designed from scratch taking in account angle simulation from both HD19 and Gopro wide angles, they´re weight versus most used FPV gear, batteries etc...

Let´s see what happens, I think I will receive CNC material (plates, etc) to start cutting this week the brushless gimbal and it´s frame adaptation were also designed from scratch and counts with an original and new concept of "rigid suspension and vibration´s dampening" ... I just hope that the final product works exactly as I imagined it will post about it here and on RCG as soon as all is working fine and tuned.

For the record, I call it: KVY6_V1



Note: Cameras simulation angles are exactly where the cameras will be... no way to get props on both screen´s even in hard turns

Cheers,
-KV

[tovrin]

love it KV! cant wait to see it in action! always appreciate your videos!

[kataventos]

Hey Tovrin,

thank you man, I just hope to never disappoint you.
We have really awesome footage out there on youtube that make your´s and other friends comments an honor for me to receive them.

Will continue to research in order to get better in future.

Cheers and don´t forget to fly safe,
-KV

PS: very glad that you liked my frame, I hope to get it build very soon

[kataventos]

Hi,

still waiting for the motors for the Y6, also the design is being updated to round 12" carbon arms and in size in order to lift bigger cameras then Gopro, but the brushless gimbal will be the same for now because the GoPro is the only AV camera I own at this moment.

Meantime because the plates will arrive tomorrow from Germany (I hope ) I decided to dismantle my spider and design an Y4 just for fast FPV without the GoPro and related stuff...

My frames are being designed for a specific hardware which is the hardware I use and advice (also massively used by people around the world) for it reliability and low price offering pretty awesome results. For example the camera support was designed for the Boscam Explorer HD19 without any gimbal, it counts however with a soft mount for vibration´s dampening. I found this camera very good for both fly and record my flights, quality is far from the GoPro but it behaves pretty impressively under low light conditions, much better then the GoPro.

I will be updating this by cutting/mounting and tuning this one (Y4) prior to the Y6 because I already have all electronics/hardware.

This one will be smaller, faster and lighter because it was designed just for real FPV fun. As the Y6 (on my previous post) it already have a distribution board prepared to use two batteries. Both frames can only be correctly balanced with both batts (one on each side). I simulated AUW and geometry before coming up with the final design/appearance... actually the base of my draws is nothing but this:

1-Real application ((e.g) FPV or APAV or simply LOS Acro fun);
2-Desired type of flight;
3-Desired FC/electronic parts ((e.g) with or without GPS, telemetry UART radio, OSD, brushless gimbal/controller etc)

Now with this I already have indicators of parts and weight, then I think about the batteries and prop size according my ESC´s and motors, which make jump for the frame size part.
I can now find the geometry by simulating:

a) Desired props size (related to what is explained and found above);
b) The arms angle (just exploring the Y concept for now);
c) Camera wide view angle simulation (avoiding (a) );

Then I put my FC board on the geometric center. Geometric center is not the same as Gravity Center... I see people messing with this two completely different points
So... in few words/bottom line, I start drawing a frame by drawing four circles then I simulate weight and the final appearance only comes in the very end... just because I really design them to fly (which is in fact the only thing missing at this time


Because I mostly use the same electronics on all my "Multirotor Gadjets" both these frames also have dedicated room for the Crius GPS with the AIOPRO as FC board etc, and this one will be equipped with the newest version of the Minim OSD by JDrones.

For the record, I call it KVY4_v1





In case I missed something important here please point me, I will be very glad to learn more everyday.

Edit: Added real pic to compare with CAD design.

Cheers,
-KV

[teslahed]

Here are a couple of flights taken from my FPV hexacopter running multwii 2.2 and the TeamKV MinimOSD;

http://youtu.be/v0Zel82lPvQ

http://youtu.be/-zNnZEX0NZw

[scrat]

Here are a couple of flights taken from my FPV hexacopter running multwii 2.2 and the TeamKV MinimOSD;

http://youtu.be/v0Zel82lPvQ

http://youtu.be/-zNnZEX0NZw

I see on the picture that you have OrnageRx LRS. How far can you go with that monopole antenna? And what kind of antenna you have on your tx?

[teslahed]

Here is a very long and very boring video;

http://youtu.be/nBBUnoHKWvE

Edit - save yourself time and click here to get to the far point (600 meters long the ground on this video);
http://youtu.be/nBBUnoHKWvE?t=4m40s
RSSI voltage drops to 1.3 volts from 2.74 when i have the transmitter and receiver next to each other - suggesting i could go quite a lot further still, especially if up in the air.

I get a good signal at over 1km along the ground, if there are no houses in between, and a usable signal even when i am stood under a concrete bridge. I suspect i would run out of mAh before i ran out of range on the radio with this setup.

I have a monpole, a dipole and a V antenna which i have tested on the transmitter. I am using the homemade dipole at the moment because it seems to give good results and is a convenient shape.

For the price i am very happy with the system - they have just released version 3.2 of the code and development is ongoing. I even put one of the long range receivers on my mini quadcopter, just because it supports PPM and works so well - i clearly don't need the range for this;



http://www.goodluckbuy.com/45mm-433mhz- ... pcs-1.html

the shortened coiled up antenna i use on the mini probably isn't anywhere near as good for long range stuff as the one on the hex, but it really doesn't need to be - i barely go more than 200meters with this thing;

http://youtu.be/VUoQG1fcKh0

[teslahed]

Now with this I already have indicators of parts and weight, then I think about the batteries and prop size according my ESC´s and motors, which make jump for the frame size part.
I can now find the geometry by simulating:

a) Desired props size (related to what is explained and found above);
b) The arms angle (just exploring the Y concept for now);
c) Camera wide view angle simulation (avoiding (a) );

Then I put my FC board on the geometric center. Geometric center is not the same as Gravity Center... I see people messing with this two completely different points
So... in few words/bottom line, I start drawing a frame by drawing four circles then I simulate weight and the final appearance only comes in the very end... just because I really design them to fly (which is in fact the only thing missing at this time

That looks like a very nice design.

I am currently working on a new FPV quad of my own, possibly a little simper;





So far it has only flown line of sight though - i am still in the process of installing the video gear;

http://youtu.be/jyM1MersesY

I have used a similar design philosophy to yourself. I like the idea of the dead cat layout because it gives clear visibility at the front and also helps with line of sight orientation, but i don't like the idea of a spider / dead cat style frame geometery that deviates from the square quadcopter shape and flying style. So i started by drawing a square, placing the 4 motors in each corner, then working backwards from there. It looks like the angles are quite odd but as far as the motors, props and flight controller are concerned it's just a quadcopter.

I'll be putting a minimOSD with the team kv osd firmware on it, of course

[kataventos]

Hey Teslahead,

they are awesome, already saw the videos and you are the aerobatic type of pilot... something that I do not fly much, only with my old gadget´s never on a demonstration of new piece of hardware...

I am alreay testing the KVY4_v1 (yes... it is a wild beast)
Here are some pictures of the final stuff already flying as we like them to... videos, as soon as I have some time and stable weather



Morning FPV...


Late afternoon testing autonomous flights...



Cheers,
-KV

[scrat]

I see you have 5db amtemma on your Tx. Are you using FrSky and did this antenna increased your range?

[kataventos]

I see you have 5db amtemma on your Tx. Are you using FrSky and did this antenna increased your range?

Hi Scrat,

sorry for he late reply, lot´s of projects and hard work these days.

I would like to answer your question by making a full description with differences between both antennas, but in truth I can only say that my range is near 2.5km with the 5db (on the pic) because I never used the original one... Note that this range is possible using double dipole on the RX and not the "wires" you see on the pic with this new under testing gadget (RX original).

Hope this help you somehow.

Cheers,
-KV

[Autonym]

Kataventos,

That is One. Sexy. Tri.

Very nice design, awesome build quality! I like the dual batteries, and the overall look.

How well is is balanced?

[scrat]

I see you have 5db amtemma on your Tx. Are you using FrSky and did this antenna increased your range?

Hi Scrat,

sorry for he late reply, lot´s of projects and hard work these days.

I would like to answer your question by making a full description with differences between both antennas, but in truth I can only say that my range is near 2.5km with the 5db (on the pic) because I never used the original one... Note that this range is possible using double dipole on the RX and not the "wires" you see on the pic with this new under testing gadget (RX original).

Hope this help you somehow.

Cheers,
-KV

Thanks.

2.5km with 5db is ok for me. I'm waiting this antenna...it is on slow boat from china

[kataventos]

Kataventos,

That is One. Sexy. Tri.

Very nice design, awesome build quality! I like the dual batteries, and the overall look.

How well is is balanced?

Hi Autonym,

thank you for your kind words.
Well, in fact regarding your question I must say that it is well balanced, but provides no good flying capabilities as a Y4 on windy days.
I reached maximum PID adjustment for it without the rock solid and yaw authority success I expected to find.

Tests will continue as a Y6 as soon as I got the new motors.

Cheers,
-KV

[kataventos]

I am very proud and excited to present here in first hand my new Open Source Project
All information about it will be be presented on RCG´s as soon as I finish it.

I would like to show you all my new "Stealth" Multirotor designed from scratch and already tested with the most awesome results, much more then I ever imagined it... no Radar testing yet .

It´s name "Squid" (KVTAIL_v1 for code name) is a VTail Quad and I must say that is my pride because I never piloted nothing like it, PID´S adjustment were made at home yesterday and today morning I made the maiden flight. In truth I got myself immediately once I put it up in the air even on a windy day like today!

No more words for now, first tests were performed under adverse conditions but demonstrated a rock solid, precise, obedient, powerful and sexy piece of "engineering" up in the air... I know what you are thinking now... ( cut the crap KV and go on... show me that stuff up in the air for real...) OK videos will follow soon! (maybe tomorrow if the weather permits) mean time I let you all these pics so you can get the idea of what I am talking about.






You can see more about this project here: http://code.google.com/p/kv-open-frames/ and you are welcome to participate on the Forum/Discuss. Also I will be accepting Pre Orders of this frame/others as soon as the presentation/demonstration is done (on RCG´s Forum) cut on Phenolic Composite Fiber (actual Prototype), Fiber Glass and Carbon Fiber, the price will depend on the materials! For the ones that have a Professional CNC at home just cut it and enjoy as soon as it is available on the downloads section (please read carefully about unfinished draws on the main project page and welcome message on the forum).

Have an awesome weekend, lot´s of fun and don´t forget... fly hard but safe

Cheers,
-KV

[kataventos]

OK

QUOTED THE VIDEO DESCRIPTION ON YOUTUBE
"this is an unofficial sneak video to the new FPV Squid prototype. It was recorded during the first day of tests and all I can say at this moment on a short description is that "she" is an airship designed from scratch to be used by pilots who want to have full domain/authority in flight with a powerful and sexy machine. This project have been on my head for a long time and it was meticulous designed from scratch by me and my friend Alkopter.
We will be soon ready to accept pre orders for it on a fully Carbon Fiber release... stay tuned for the presentation on RCG Forum, coming soon!

Have lot´s of fun, fly hard but safe.
Cheers,
-KV

PS: Thanks to Faísca who recorded this "sneak over my shoulder"!






-JDrones v2 OSD (KV Team OSD Software);
-EMP 1120kv motors;
-9x4.7 Carbon Fiber Gemfan Props;
-RCTimer 20Amps ESC´s (SimonK Firmware);
-Crius AIO PRO FC Board (Multiwii);
-Crius GPS;
-2X 2200mah 3s Turnigy batteries
-Boscam HD19 Explorer FPV camera (on board recording)
-Boscam 5.8ghz 200mw video TX (E Band 5885mhz channel 5);
-CL and SPW Antennas made using the KV antenna Jig for perfect frequency match;
-FRSky 2.4Ghz RX (D8R-II_Plus flashed and using CPPM 27ms Firmware);
-Turnigy 9X TX fully moded using ER9X (Multiwii code patched for full compatibility with FRSKY telemetry)."

[kataventos]

Just a Teaser...

Squid is still in progress for production!



Cheers,
-KV

[T-Bob]

Kataventos;

Hello. I use your osd and I just got a new mega v3 from witespy and I use frsky's silver 8ch rx the one that ends with -xp I forget the exact name. I have been looking for this patch to allow frsky telemetry integration and I have had bad luck finding it. I've tried numerous search strings. I registered with the forum just so I could ask you if you have a link or can give me some advice for finding this information. And I wanted to ask if this would allow me to input rssi into the fc and forgo soldering the resistor wire thing to the osd itself.

I hate to be the guy to ask for help doing a forum search but what I am finding seems to be old info. Could you help me out with just a clue to where I should look?

That squid looks awesome by the way.

[kataventos]

Hi T-Bob,

welcome and forgive me for late reply, I have been away from home.
I can help you but the best is for you to check this topic here, this is the last page but you can find all info if you have the patience to read about it: viewtopic.php?f=7&t=1929&start=190

I have "my own code" regarding FRSky telemetry and I also build my hardware (inverter/level converter). When I change MWii version always have to port it because this have never been official.
Yes, you can use the RSSI from your RX to the FCB using a tiny RCFilter, I also have posted some times about the filter and one of them a few days ago here: viewtopic.php?f=8&t=2918&start=770

Have fun here with us.

Cheers,
-KV

PS: thanks for your kind words

[kataventos]

Hi,

because I am addicted to MWii only, I put all my stuff here

This video have nothing fancy, just to show good range with AV DIY (TX/RX) modules using CL and SPW antennas made with the Jig.
Made this video for the JIG topic on RCG´s in August 2013 but somehow forgot to upload it on YouTube...

Cheers,
-KV

[Gimbal]

Nice project, missing the plan for The Sohal tho

[kataventos]

Hey Gimbal,

thanks, what do you mean missing? I do not understand...

[Gimbal]

Sorry will clarify, on this https://code.google.com/p/kv-open-frames/ OP Downloads there are The Squid but not The Sohal, it's not critical but would be nice to mil out on my cnc router, btw i like your fpv project
Regard's Anders

[kataventos]

Ahh OK.
the draws are there, you need to make a clone on your PC or to download a zip file They were not packaged and released but they are present on the repo, I have been working on the OSD so, no update on this project for some time.

Also will be presenting the SQUID soon... ("lot´s" of projects and just a few available time at the moment )