Going small...

Are you in-to First Person Viewing? Got an interesting hack/mod? Let us know!
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kaos
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Re: Going small...

Post by kaos »

so this one will work with RC305 Rx:
http://www.hobbyking.com/hobbyking/stor ... VL%5F.html

and looks like I tapped into someone is really knowledgeable in FPV. :mrgreen: Since you are selling these in Europe.
Any recommendation from you? what OSD system you think is THE best for around/under 200

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erazz
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Re: Going small...

Post by erazz »

Z

BEWARE - WE ARE IN THE AIR!!!
What goes up... Should be controlled by a 9X!
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Kilrah
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Re: Going small...

Post by Kilrah »

Hmm, never seen that one, there's no frequency list, no user reports, no answer to questions, no downloads... only "Compatible with most 2.4Ghz video receiver systems"... which means nothing as like I've said there are 2 that are incompatible and just as common as the other... I would refrain until there's more info.

As to recommendations - Not really. I've always specialised in legal-only offering mostly because I don't really have a choice, authorities here actually come to you, ask for samples and do lab tests - you're fined heavily if you supply non-compliant equipment, and also because that posed an interesting challenge, and it's always fun when you read/hear/see people going for 1W transmitters because they're sure they can't do anything under that, and then show them how you fly 2.8km on 10mW, actually farther than them because their 1W TX wrecks R/C reception :mrgreen:
The few times I've been in FPV meetings people were always amazed - most of them had never even given a thought about getting anything under 200mW.

So you can ask me about and I can supply you all you want in 2.4GHz/10mW and 5.8GHz/20mW, but I don't have much experience outside of that. That won't get you to the 2km you want though.
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kaos
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Re: Going small...

Post by kaos »

ha, I saw that 600VTL camera too. there is one place you have a choice of 2, 3.6, 4,6,8,12,18 mm lens too. any suggestion on the lens focal length for FPV use?

and yes, kilrah, I don't know if the HK mini cam/Tx set will work with rc305 RX either. Darn HK, never put enough spec on there. :evil:

What my plan is use that 200mW Tx/Rx(rc305) for my full range FPV with joy stick..... and a mini/micro Tx that will work with RC305 , so I will have a second FPV for smaller plane close range fun, like your Sbach. :) But not end up with too many overlaping Tx/Rx.... Just need one Rx, one goggle, one basic OSD for small crafts, one full function OSD with autopilot/return home for the full range.

Just trying to put everything together so I can start to put an order/many orders from different places.
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Kilrah
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Re: Going small...

Post by Kilrah »

On an 1/3" sensor you can go for the standard 3.6mm.

The 200mW set sounds like a good plan, and you can get one of the compatible 20mW bare modules for the small planes.

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Kilrah
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Re: Going small...

Post by Kilrah »

On topic, I went ahead and redid my whole video setup on the Sbach. Couldn't wait for the new cam :mrgreen:
I took the camera apart, and realigned the lens mount so that I don't have vignetting anymore. I also dissected the 1.8gr servo to add resistors inside to increase throw to about 190°... much better now!

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Last edited by Kilrah on Thu Mar 22, 2012 10:49 pm, edited 1 time in total.
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kaos
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Re: Going small...

Post by kaos »

Kilrah wrote:and you can get one of the compatible 20mW bare modules for the small planes.
which one is compatible?


any pic for how you mod that servo to do 170 degree throw. and how you program the er9x? with extended limit there is only 125? May be 125 steps for 170 degree. :)
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Kilrah
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Re: Going small...

Post by Kilrah »

The mod is rather standard, works on any servo. You wire a 2.5kOhm in series with each "end" terminal of the potentiometer. And shave the end points on the gear or inside of servo case of course (on the output shaft in this case). This approximately doubles the servo's throw, so my limits on open9x are actually -79 / +95. Oh, that's with the wrong DSM2 scaling, so it's indeed close to -110 / +120.

The only supplier of the 20mW naked TX I know is in France (well except me, but as I don't have the same freq set...)
http://www.fpv4ever.com/lang-en/serie-5 ... 200mw.html
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kaos
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Re: Going small...

Post by kaos »

Any place selling the plug and play 20mW Tx. you know alreay I am lazy. :mrgreen: If I don't have to pull out my 14.00 soldering gun and burn my finger, I try to avoid it. ;) May be you should get some and put them together to sell it. I may be the 1st customer. I do like the Swiss made soldering. ;)
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Kilrah
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Re: Going small...

Post by Kilrah »

The 20mW doesn't exist in PNP form anywhere else as fas as I'm aware... the 200mW can be found from different sellers on eBay, even if some really mount them in a dodgy way...
Yeah I might get a couple of "standard-band" ones for off the record stuff on next order - I have a couple friends needing some too :)

As I like clean things, that's what you'd be looking at, either with whip antenna or RP-SMA (I haven't even tested the cloverleaf version yet though!)

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Don't look at the website too much at this point, the English texts are highly outdated and in need of a serious overhaul :mrgreen:
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kaos
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Re: Going small...

Post by kaos »

I am blind. The HK 520VTL /Tx combo is a 2.4 GHz Tx. :-S so scratch that one. Waiting for yours if I can't locate a 5.8GHz 20mW Tx. :)
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kaos
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Re: Going small...

Post by kaos »

Ha, just received my 1 g 90 degree 520 TVL cam: http://www.aliexpress.com/snapshot/107535325.html
got it for that price is incredible. I was going to order a 2nd one next day and they have gone up to 38.00 a piece. the same store also has more than a dozen micro cam with different spec (volt, weight, view angle) really nice place for micro cam.
the 1g 90 degree cam is as clear as my 38x38 sony 600 TVL cam. viewing on my TV. very happy. the pic at their site is a little misleading. the one I get is actually without back square cover, just the small pcb board, but in their pic it shows both. :(

Kilrah: that servo you use is 2g or 2.2 g?
I found these two at HK:
2g http://www.hobbyking.com/hobbyking/stor ... duct=14839
2.2g http://www.hobbyking.com/hobbyking/stor ... duct=12907

also this one only 1.7g: http://www.hobbyking.com/hobbyking/stor ... duct=17540
this one seems to have very little torque for turning that 1g cam and Tx? what do you think?

how heavy is the 50 mw Tx? how much extra weight the Sbach or Beast 3D AS3X will be able to handle without too much sacrifice is performance?
Any progress on the 50mW Tx? no rush, I don't have the Sbach or Beast 3D yet, both of them are out of stock. :(
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Kilrah
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Re: Going small...

Post by Kilrah »

kaos wrote:also this one only 1.7g: http://www.hobbyking.com/hobbyking/stor ... duct=17540
this one seems to have very little torque for turning that 1g cam and Tx? what do you think?
That's the one I use. Way more than enough to move the camera (not the TX, what would be the point of moving it?).
I modify mine for 180° operation too. Note that if you want to use it on the Eflite planes you'll have to replace the connector with a Spektrum one.

The 20mW TX is about 2gr. It needs to be installed right at the front, I had to add a bit more weight for balancing too.
That's what I have in there:

Image

The plane still flies perfectly well, it just won't do endless vertical climbs like before.
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kaos
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Re: Going small...

Post by kaos »

OK, will order a couple 1.7 g servo for the little ones. ;)
I also found this cam:
http://www.aliexpress.com/product-gs/56 ... alers.html

It seems to be perfect for any thing larger than a micro like Sbach. 90 degree input V is 6-24V. with a couple 2 g servo for P/T, it should serve well.
of course, need to do the 180 degree mod too. ;)

I think my FPV project(s) is coming into shape now. large, medium, small planes, short range, medium range, long range (~ 2.5 KM) , DVR with monitor, goggle with P/T are all in place.
only two things left:
1.the Nova OSD, just sent back to the seller , cost me 18.00 for a tracking # :( . Cross the fingers they will send me a good one this time.
2. and your 50mW Tx. ;)
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Kilrah
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Re: Going small...

Post by Kilrah »

kaos wrote:OK, will order a couple 1.7 g servo for the little ones. ;)
[...]
of course, need to do the 180 degree mod too. ;)
Get quite a few spares then - you certainly will break a couple when doing the mod the first times (I did too...)
It's TINY in there.
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kaos
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Re: Going small...

Post by kaos »

4 enough? almost placed the order just now. plan to order 4. may be more?
I also ordered 5 2.2g servo with 0.8 kg torque for small plane bigger than micro and I intend to have P/T for those a little bigger than micro and using the 3g 6-24V 90 degree cam :
http://www.aliexpress.com/product-gs/56 ... alers.html
This cam can be used for any plane other than micro, so it will be a plug and play design - swappable. ;)

I figured I don't need a p/T mount at all for these 1-2 g servo and cam, just hot glue two servos at 90 degree one for pan one for tilt. :) Ah, a lot of experience need to be learn. Don't know any of these till actually put my hands on them. :)

another thought, with 90 degree viewing angle of my cam, a servo at 120 degree swing, do I even need to do the 180 mod, it already covers more than 180 degree with pan.
Crowstooth
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Re: Going small...

Post by Crowstooth »

I bought 2 of these and they work fine with a 2gramme camera.
http://www.rcshutter.com/index.php?rout ... duct_id=92
John.

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