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Attention: RC-CAM.com will be closing down August 2021.

The RC-Cam.com forum was the very first online community dedicated to the advancement of wireless video cameras on radio controlled (R/C) models. This is now called "FPV" (First Person View). We are proud of the contributions that our members have made to the FPV hobby.

We've seen significant changes over the last twenty years. Initially there were a lot of eager R/C hobbyist that built their own video systems. Allowing these creative individuals to share their work was the purpose of this site. Now the FPV market is flooded with low cost systems; Sadly DiY FPV video projects are now rarely discussed.

RC-CAM.com (main site and forum) will be closing down August 2021. This was announced several months ago (March 2021) to allow our members ample time to download any information that is important to them. After the site is shutdown the information will no longer be available here.

We appreciate every member's involvement with advancing the FPV hobby. It is indeed sad to say goodbye to all our online friends. Be safe and stay healthy.



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Hey rc-cam,

So is current model of Gaui 330X-S will be compatible with the new FY-91Q GPS ?

Also, once you have FY-91Q GPS on Gaui quad, would Gaui quad functionality be same as mikrokopter?

or do they "mikrokopter" have many other features that still would not be matched by this chip?

Also, I see video on youtube, where people are capable of programming GPS waypoints into their quads and can have them fly in UAV mode. Is this just another chip add-on for any quad, or only certain quads can support this type of programming?

Can GAU 330X-S be made to fly autonomously?

Sorry if these are stupid beginner questions that don't make sense.

I still did not buy my first quad, but I did order a simulator and waiting for it to arrive and start learning.

I will be ready to buy some quad in a few weeks and need to make a decision on which one to invest into.

GAUI seem very reasonably priced and not as expensive to lose in case I crash it.

last comment, I saw that GAUI now released a housing for the camera for their GAUI quad. What would be the best camera mount with stabilization in 2 axis for GAUI? Would that be their native mount or there are some better options on the market?

Regards,

HP.

My Gaui 330X-S / FY-20A is still making me smile. I have about 20 stick hours on it so far. Such a cool model!

Regarding the FY-20A gain settings, I'm still using very low gains. I can increase the FY20A's gains with heavy payloads, but I've just decided to live with the lower gain settings.

The makers of the FY-20A recently released the FY-90Q quad stabilizer. I was going to try it, but have decided to wait for the FY-91Q GPS enabled Quad stabilizer with RTH and altitude hold. Anyone have any pre-production experience with a beta unit?

By the way, the Fyetech company site does not have any info on the FY-91Q. But here is a retailer that is advertising it:

http://www.nemhobby....son-p32844.html

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Can a quad be flown in 20mph wind?

My plans are to use this for water sports photo shoot in the future. (windsurfing or surfing ). Obviously, it would be :

1. flying over water

2. flying in high winds.

Will GPS enabled "Dream Catcher" allow me to succesfully maintain position and shoot over water in high winds?

Or is it a bad idea to even think of flying in high winds?

If quad is not the answer for doing what I described, what could be my other options?

thanks for your comments mate - think I will go ahead and get FY20A then - anything that helps keep it a little more stable will be grand. Super windy today but if things improve will go out and take some pictures and post them.

cheers

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Thats a pretty horrible combination for any quad I think! I would be very nervous flying in any wind above water, especially with expensive camera kit onboard. I am sure RC-Cam is far better qualified to answer your questions, (and I only have the stock gyro on my quad so far) but flying in strong winds is a fairly hands on exercise! Even in a moderate wind, it takes all my concentration at altitude to keep it under control - even worse with gusts that cause sudden altitude gains or loss. Unless you have someone else remotely operating the camera gear I think your mission would be extremely difficult even with GPS hold - but thats just my opinion from my limited experience. As my day job is a photographer (and my initial reason for getting into this), my other concern would be needing to get a shutter speed of at least 1/500sec to avoid blur from vibration and the use of a vibration dampening camera mount carrying a decent SLR.

My other concern, of course, would be dumping it into the brine if something goes wrong. There is always a possibility of an ESC / Motor burning out which with a quad means it turns into a mini meteorite - also pays to monitor voltage levels very closely as one motor will cut out before the others with the same consequence (this caused one of my crashes - I now have a LVA - lesson learned).

I suppose you could protect your camera with a waterproof case but this will add some serious weight. At least then your cam would be ok if the worst happened - if you could retrieve it from the seabed!

I am looking into getting an MK Okto (hopefully early next year) With 8 motors, this does have the added benefit that it can still fly if one motor/esc goes out - again more security for the camera kit.

Sorry to ramble abit, to sum up - in my opinion, the 330xs is great fun for flying, FPV and taking pics/film with a cam like the GoPro or a point and shoot, but it doesn't have the lifting capacity to carry a quality SLR + Lipos + FPV kit etc. For this you would need to look at MK / Droidworx or build your own!

cheers

Can a quad be flown in 20mph wind?

My plans are to use this for water sports photo shoot in the future. (windsurfing or surfing ). Obviously, it would be :

1. flying over water

2. flying in high winds.

Will GPS enabled "Dream Catcher" allow me to succesfully maintain position and shoot over water in high winds?

Or is it a bad idea to even think of flying in high winds?

If quad is not the answer for doing what I described, what could be my other options?

Edited by remoteafrican
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So is current model of Gaui 330X-S will be compatible with the new FY-91Q GPS ?

As far as I know it will work with any Quad. I suspect that all you need is the frame, motors, and ESC's, since all the major electronics are in the FY-91Q.

Also, once you have FY-91Q GPS on Gaui quad, would Gaui quad functionality be same as mikrokopter?

or do they "mikrokopter" have many other features that still would not be matched by this chip?

Your guess is as good as mine. The FY-91Q is not a product yet.

Can GAU 330X-S be made to fly autonomously?

I doubt that will be one of its features.

I saw that GAUI now released a housing for the camera for their GAUI quad. What would be the best camera mount with stabilization in 2 axis for GAUI? Would that be their native mount or there are some better options on the market?

If you've seen a Gaui camera housing then you already know more than I do since I did not know they created one. As far as camera stabilization goes, I don't have any recommendations since I don't do professional photography and never had need for such a thing. Maybe Terry or Kilrah can offer some advice.

to sum up - in my opinion, the 330xs is great fun for flying, FPV and taking pics/film with a cam like the GoPro or a point and shoot, but it doesn't have the lifting capacity to carry a quality SLR + Lipos + FPV kit etc. For this you would need to look at MK / Droidworx or build your own!

That is wise information.

does the FY20A help you deal with gusting wind

It helps a tiny bit but in the wind the small quad is a challenge to fly smoothly. I have a feeling you are looking for a something that will hold the Quad at a fixed spot so you can take photos. That is not what the FY20A can do; It is just another stability system. Sort of like a R/C heli gyro on steroids.

If you are looking for a professional camera ship then I doubt the 330X-S / FY-20A combo is going to be the best solution for you. However, a stock 330X-S would be an excellent R/C Quad trainer, especially since it is very low cost and reliable. Once you have many hours of practice on it you will be ready to transition to something more suitable to your application.

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Here are a few pics of my 330xs electrics installed (temporarily) on a 450 size frame with cf landing gear from a large heli. Like I said, I will probably lose the gear to save some weight but I like how it looks :) There is no camera system or fpv on it in these shots, hence why the camera mount is tilted so far forward for CG. Have also just slipped the lipo into the back of the camera mount for now - just to take some pics. Will hopefully be able to finish the build this week and have my first FPV flight with it. The sponge balls detract from it's menacing look somewhat :) but they are fantastic for orientation at altitude - they really glow when the sun hits them.

post-6136-061526500 1289983271_thumb.jpg

post-6136-097999100 1289983275_thumb.jpg

post-6136-046351600 1289983281_thumb.jpg

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Rc-cam - wondered if you have any advice. I have now removed the landing gear and just put CF 'pegs' on instead. Added a 2 axis camera mount and mounted a point and shoot cam in it. Now for some reason I can't work out, the motors seem to be surging randomly causing it to gain altitude on its own, once I reduce throttle it will sink and I have to input way more throttle than normal to stop the descent - its also nowhere near as stable and calm as it was. I have re-calibrated the ESCs one at a time and checked gain etc. but I can't see what could be causing it. Before the frame change it was flying beautifully and I could fly hands off in no wind for 10 seconds or so easy. Now there's not a chance of doing that.

Will do some research now and see if this has come up before but wanted to pick your brain first if you don't mind.

cheers

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Very nice looking camera ship.

Surging: Could be anything; Rx interference or poor Rx antenna location, intermittent motor connectors, failing motor or ESC, and so on.

BTW, are you using 2.4GHz R/C or is it a standard PPM system? Is the Gaui controller's remote gain input connected to your Rx?

Stopping descents: Are you sure the extra required throttle input is not because the new model weighs a lot more than the Gaui?

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I have to input way more throttle than normal to stop the descent

This simply seems due to the extra weight.

Now for some reason I can't work out, the motors seem to be surging randomly causing it to gain altitude on its own

That could be due to your "pegs" vibrating...

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yes, very nice looking.

did you replace the frame competely? how did you make this one? it looks same as original GAUI. or u used GAUI hands and made center bigger?

Here are a few pics of my 330xs electrics installed (temporarily) on a 450 size frame with cf landing gear from a large heli. Like I said, I will probably lose the gear to save some weight but I like how it looks :) There is no camera system or fpv on it in these shots, hence why the camera mount is tilted so far forward for CG. Have also just slipped the lipo into the back of the camera mount for now - just to take some pics. Will hopefully be able to finish the build this week and have my first FPV flight with it. The sponge balls detract from it's menacing look somewhat :) but they are fantastic for orientation at altitude - they really glow when the sun hits them.

post-6136-061526500 1289983271_thumb.jpg

post-6136-097999100 1289983275_thumb.jpg

post-6136-046351600 1289983281_thumb.jpg

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Hi guys

Thanks for your comments - will go through it all again - just had a thought - I am flying outside my studio at the moment and there is alot of 2.4ghz wireless networks around here - could that cause tx-rx interference and cause the surging? Or is it more likely something else? I am flying with 2.4ghz control and 5.8ghz fpv kit at the moment - not ideal I know - but this model is just for fun/testing/learning :) with a an MK Okto2 on the horizon.

Regarding descents, I have flown with more weight than this on the stock frame before I did this changeover and didn't experience the same unpredictability on control.

Anyway - will let you know how i get on!

Heliphoto - I am not sure where the frame is from - but I bought it from Buzzflyerdotcodotuk. You can either just get the arm extensions or you can replace the whole thing. It is extremely fiddly to put together as all the wiring is only just long enough and the manual is dreadful so you kinda have to work it out yourself. Not rocket science though! Have had to customize it abit too. Where the stock frame is 33cm between diagonal motors, this frame is 45cm. Until I sort out this surging issue I can't really comment whether it has made any difference to my flying experience or not (apart from shortening my flight times! :) ).

yes, very nice looking.

did you replace the frame competely? how did you make this one? it looks same as original GAUI. or u used GAUI hands and made center bigger?

Edited by remoteafrican
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I am flying outside my studio at the moment and there is alot of 2.4ghz wireless networks around here - could that cause tx-rx interference and cause the surging?

No. A 2.4GHz radio would in the worst case "lose" an order which should go unnoticed, but definitely not accept a corrupt transmission.

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Thanks Kilrah, the surging seems to have gone now (after I went through all the connections) - must have been a dodgy motor connection or something. Flying nicely now.

Does anyone know if the FY21AP II IMU AUTOPILOT + OSD will work on the 330xs? Can't seem to find much info on it. I am trying to get my hands on an OSD module but it seems no-one in the UK has any stock of anything. One store has this and it could kill 2 birds with one stone I guess, but I have a feeling it won't work for the quad.

thanks

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Does anyone know if the FY21AP II IMU AUTOPILOT + OSD will work on the 330xs?

I understand that the waypoint features are not expected to work on a quad since the FY21AP IMU requires the aircraft to have forward speed (e.g., forward moving fixed wing aircraft). I suspect it's basic stabilization features would be fine, but overall its not really the right product for quads.

BTW I am selling one, details are here: http://www.rcgroups....d.php?t=1330524

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  • 2 weeks later...

Thought I would share my recent bearing failure story. Maybe it will help the next guy that runs into this problem.

After about 20 hours of flight time (and no crashes) I started to hear an occasional bird chirp from the 330X-S. The bird chirp eventually went away, but was replaced by an intermittent yaw twitch. The last video I posted shows this issue at its worse. A failing motor bearing was causing it.

No problem, I figured that buying another original Scorpion GM410 motor would be a simple solution. I was surprised to see that they were rare and a bit over priced ($45 + shipping). In my searches I also learned that Scorpion bearing failures are very common.

I think long term I will just buy four new matching low KV motors from the HobbyKing (anyone have any good recommendations?). But for now I decided to buy a set of replacement bearings instead. As my luck would have it, they were out of stock everywhere. But I read a fellow's post over at rcgroups that suggested a similar bearing from Tower Hobbies. Unfortunately he did not confirm they would work. So I ordered a couple sets to test my luck. Here is the link:

http://www3.towerhob...p?&I=LXUZ41&P=7

They fit fine, but getting them in was a pain. My trick is to heat up the motor until it is too hot to hold, shoot some freeze spray on the bearing, and gently push them out. Then repeat this procedure to install the new ones. But on this motor one of the bearings would not come out. Worse yet, the bearing race was flush with its holder, so using a mandrel to push it out only invites the bearing to break apart. Which mine did. So, I had to grind out the race that was left behind.

No flights yet, but the motor spins like new again.

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I tried out a couple of 330X accessories last weekend. Here's some feedback on them.

GAUI 330X PROTECTION FRAME G-210850, $17 USD

http://eng.gaui.com....09234121010.JPG

The protection frame was only used on one flight and then removed. It would be ideal for a new pilot's training period (extra protection from dumb thumb events).

GAUI 330X WIDE SKID SET G-210911, $12 USD

http://eng.gaui.com....09234121352.JPG

I like the wide skid set -- it's nice to be able to take-off in the grass without having to worry about a wheel getting stuck in the weeds. So this accessory will stay on for awhile.

These accessories are sold wherever the 330X-S is offered. So check with your supplier if you want them.

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  • 3 weeks later...

Happy New Year everyone, hope much fun was had by all.

A quick update on my 330xs evolution. After an uncontrollable deathslide from about 200 feet (in early dec) there wasn't much left of my 450 frame strewn about in the grass. (I have a great still pulled from the gopro of the moment of impact - 2 arms independently airborne with motors still attached and spinning. Will upload it tomorrow, as I left it at home). Was gutted. I transferred all the electronics onto the old 330 frame and swapped out a couple motors and ESCs in case that was the issue (there was nothing obvious). Flew fine for about 4mins and exactly the same thing happened - slow roll to the left and rapid descent, regardless of my manic thumb movements. End of 330 frame as well+ 2 motors. This was getting expensive. I was left having to assume that something had gone wrong with the GU-344. Any thoughts?

Anyway, to cut a long story short, I have just rebuilt it again on a brand new full carbon fibre 450 frame (excellent quality with absolutely no flex in it), new GU-344 and an FY20A. I have to say, after a bit of fiddling with gain pots etc. the results are fantastic! Very pleased to have that extra backup just in case. RC-CAM, I have managed to get 2.5 clicks CCW on the ELE and AIL pots without oscillations (I guess due to the bigger heavier frame and payload). As you said, changing the GU-344 gain between 25% and 40% didn't seem to make any difference, I am currently flying at 40%. I bypassed the FY20A for the rudder as the GU-344 does a great job of holding heading on its own. I have also added a 2 axis CF camera mount with servos, CF landing legs and new 10" props from GAUI. Not entirely sure if the bigger props change things much, but they certainly make more noise angry.gif

I finally feel confident enough to try FPV, so I'll let you know how that goes in due course.

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After an uncontrollable deathslide from about 200 feet (in early dec) there wasn't much left of my 450 frame strewn about in the grass.

Very sad, my condolences.

Flew fine for about 4mins and exactly the same thing happened - slow roll to the left and rapid descent, regardless of my manic thumb movements.

Suspect everything. For example, that is the same kind of symptom I experienced when an ESC was tripped by its low voltage cutoff feature. This event can be due to a bad ESC, incorrect ESC programming, or a goofy battery pack.

In my case it was caused by exhausted batteries from flying too long, so I solved my death slide with this: http://www.dpcav.com/xcart/product.php?productid=16380

I have managed to get 2.5 clicks CCW on the ELE and AIL pots without oscillations (I guess due to the bigger heavier frame and payload)

That is excellent. Now that you have some stick time with the FY-20A, if you had to sum up it's stability performance advantages in a couple sentences, what would you say?

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Thanks for your reply, RC. I found both of my crashes very strange as it did not seem to be any of the things you described (although I could be wrong of course). However the packs on both crashes were different, fairly new but used several times. I also have a LVA set at 3.6v so it was not a low-voltage cut-off issue as far as I can see. Also the one time I experienced a low-voltage crash, it was an immediate flip and crash. Both these crashes were slow rolls to the left until lift was lost and I was unable to correct it. (I have onboard footage and the similarity is striking, but internet in Zambia is dreadful so uploading vids is a challenge).

I also changed out the ESCs on the on the 2 left hand arms with new ones between crashes and motors and the exactly the same thing happened again (although after a longer flight time). I had also re-programmed the ESCs to default and re-calibrated several times. As I say, very strange. I had to suspect that the GU-344 was going crazy for some unknown reason after a random amount of seemingly normal flying time...

Anyway, onto the new build: I am using the same ESCs and motors but a brand new GU-344 and after flying through 6 or 7 battery packs there has been no hint of it wanting to kill itself yet! I have only flown through 2 packs with the FY20A installed, so I would like to get some more flying time in with it before I can comment properly, but - my initial response was very positive! I have no interest in sport/3d flying so my ideal quad behaviour would be slow and stable for FPV / AP. From the little time I have had with it the FY20A seems to get some way to achieving this. I put it through it's paces abit by doing aggressive slides left and right and forward and back and it is great to watch it level out instantly, with a wobble or two granted, but still a great result. Nose-in is a breeze as are slow piros. I do have to say though that it was extremely calm when I was testing it and from what I've read, I expect it to throw a bit of a tantrum in strong wind, but we'll see.

I hope to get out and fly some more this afternoon so will give you my sentences then.

p.s. Pic attached of first crash, moment of impact. Note 2 arms leaving the general area smile.gif

post-6136-0-03302300-1294124337_thumb.jp

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  • 2 weeks later...

hey guys

sorry for the delay. Haven't had much of a chance to fly. Yesterday, I continued testing the new CF frame and the FY20A and I am very happy with the combination so far. Flew FPV for the very first time today, from take off, flying around and landing on my pad in the field. The FY20A provides for very smooth take off and landings, which makes doing these via FPV very easy. Have to say I was pouring with sweat after the first few sorties though (and a little nauseous)! I'm gonna go find a larger field now so I go higher without stressing too much (maybe a field of corn to provide a softer landing in case I dump it!). Wanted to make sure I could land accurately before I progress any further. I have to say, the view in the fatsharks from the gopro is SO much better than from my CCD cam and the wide (if distorted) view, along with the tilting camera mount allows me to see exactly where I place my skids. By the way, my Fatshark battery seems to have died after 2/3 charges. I cut off the connector and soldered it onto a 7.4v lipo and that sorted that problem - although they don't looks quite as good!

I have a problem with the gopro at the moment that I need to look into further - it seems it wont record and give a live feed at the same time. After about 20 seconds it flashes Storage I/O error - maybe my memory card or something.

I will get round to posting that crash footage as soon as I can, along with some pics of my FPV setup and my new modified landing skids.

RC-CAM - i have 2 motors with mashed bearings by the feel of it - is it worth the hassle of trying to change them? I am thinking of using alternative (cheaper?) motors and ESCs, any advice?

cheers

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