I have 2 FPV Units sitting at home for the last 4 months. Mr. Maharana and I plan to use them on boats as FPV platforms, that we are building for a client.

Quote from: azhaguvel on January 08, 2011, 01:11:46 AM
some more pics. when i move my camera very fast the video blacks out for a fraction of second.

What do you mean blacks out for a fraction of second I dont think thats normal. Mine does not black out even once irresepctive of the movement and the speed. Try n upload a video of the same. Now that your goggles are not of great support, what do you plan to use for display? Got any USB Capture/Tuner card ? You can use that to view on your Laptop. Thats what I do. I got the USB capture dongle only for Rs.850 from ebay including shipping. Not a bad item to have.

http://cgi.ebay.in/USB-EASY-CAP-VIDEO-CAPTURE-ADAPTOR-4LAPTOP-Easycap-card-/300512094209?pt=LH_DefaultDomain_203&hash=item45f7eaa801
OR
http://cgi.ebay.in/EASYCAP-USB-2-0-TV-DVD-VHS-VIDEO-AUDIO-CAPTURE-dC60-/270689309431?pt=LH_DefaultDomain_203&hash=item3f065712f7 ---> SUPER FAST SHIPPING. Same day shipped from Delhi, received the next day.

Quote from: VC on January 08, 2011, 01:20:16 AM
I have 2 FPV Units sitting at home for the last 4 months. Mr. Maharana and I plan to use them on boats as FPV platforms, that we are building for a client.

Great VC!!  wats the power of the system? 900mhz? same frm HK?
BTW where do u get such clients from 

mmm. the goggles is good enough to see where my rc model is going but not good enough to see who is there on ground. i guess not even the camera can do that  . Anyway i liked it very much  .


About the range of 900mhz 200MW camera(i did a check now). I would say good. It was just a few feet before my rx of turnigy 9x lost signal. I would guess it around 700m. enough for an rc flyer. 

Between about the capture device, I though of buying it from deal extreme.

800 ? no offence but i could see the same piece for 530 here which i already thought of buying. will be ordering this week.
http://www.dealextreme.com/details.dx/sku.11267

Also check this link which show lot of similar products
http://www.dealextreme.com/search.dx/search.Video%20Capture

Quote from: azhaguvel on January 08, 2011, 11:06:45 AM
800 ? no offence but i could see the same piece for 530 here which i already thought of buying. will be ordering this week.
http://www.dealextreme.com/details.dx/sku.11267

Yup I had seen that... but I dont mind paying another 300 for a next day delivery without customs hassles

Ya you are right  about the cables.
Yes the camera flickers when i shake it very fast. Is it cos of loose connection of the connectors.
Also my camera & tx gets warm enough for my hands to feel the heat. Does this happen in yours?

Quote from: azhaguvel on January 08, 2011, 11:35:56 AM
Also my camera & tx gets warm enough for my hands to feel the heat. Does this happen in yours?

Not too warm. After about 5 minutes of operation, it gets a bit warm. Something like normal body temperature. With the ceiling fan on, it barely gets warm... by the way its 1500mW. I am happy with the heat dissipation. The outer case (aluminium shell) is quite effective and a very snug fit for the actual tx inside.. I am planning to put a little bit of thermal paste and then repack for more efficient heat dissipation.

Interesting . Changed to channel 1 the flicker when i shake the camera fast stopped. Now the video is also clearer then the previous one.

Hi friends,

I need to make an LC filter for noise reduction from the ESC for the FPV setup. Any idea where can I get the ferrite ring from? Attached is the sample of the complete filter. I am sure I would need this to kill the noise and interference from the ESC and will use it on the FPV power supply.

Thanks.

Hi Friends,

Any help will be appreciated.
Any idea where can I get the ferrite ring from?

Regards,
Saurabh.

Take it out from old faulty CFL tube circuit...

Thanks Sandeep. Will try that.

Hey Sourabh, we have a huge bazaar of electronic parts here in Baroda, I am sure one of them must be having this ferrite ring available....I'll take a print of the pic in your post and inquire at the shops on coming weekend.

These are also used at times when installing Car Audio Systems, you can check with one of the local dealers in Mumbai.

Here is one dealer I found...

Techtone Electronics - 20-a, Heeramaniratan Shopping Center, Bangur Nagar, Goregaon(w), Mum-90, Mumbai, Maharashtra, India

Will let you know if I find one for you here...

Thanks a lot Chokxxi. 

Really appreciate your help 
Please dont take unnecessary pains of going there specially. Only if you happen to go there, you may want to check at those bazaars.

Thanks again for your inputs and help. 

Anytime Bro...

Just want your FPV unit to be up and running....I have seen so many people installing FPVs on their birds on RC Groups i.e. outside of India folks except for few like Mr. Arvind....Its a real cool thing to have a cam on your bird and see how it looks from above there, your initiative is pretty encouraging.....I am planning to build a tricoptor sometime next year which will carry a camera on board....Right now no plans, I am still struggling with my J500 Kit from HK and ran out of funds...

All the best with your FPV....

saurabhh. How are you planning to power up the camera?
Are you going to use the power of the rc model itself or going to place a separate power source.

Can you explain more on this
"I need to make an LC filter for noise reduction from the ESC for the FPV setup"

Hi Azhaguvel,

Though I am planning to use a seperate source to power the FPV system (will be using a 750mah 3Cell Rhino Lipo), there is a high probability of getting interference from the ESC as the vtx will be in close proximity to the ESC.

I have tested the system on the ground with the ESC and vTx far enough to be in an aircraft. I still get interference (horizontal lines on the screen).   I did some research and found that adding an LC filter will reduce the interference to minimum. However, it will not kill it completely.   Usually this LC filter is required in cases where the power supply is common. (i.e same battery used for vTx and ESC/Motor.) If using different power sources and still getting interference, then it is more likely that the FPV system is picking it up as RF and not via its power supply. I just want to be sure so wanting to try the LC filter as well.  

Quote
Can you explain more on this
"I need to make an LC filter for noise reduction from the ESC for the FPV setup"

Very Simply put, An inductor resists changes to the current flowing through it: A capacitor resists changes to the voltage across it.
People have had really good results with this LC filter. The more the no of turns the better. The higher the capacitance, the better.

Cheers !!!

Quote from: chokxxi90210 on January 11, 2011, 02:30:34 AM
All the best with your FPV....

Thanks for your wishes. I will update on this Sunday.

I am always stunned to see RF/Modualted signals from Camera/Tx/Rx borads sent on flat cable without any 'Shielding'.
I used to get wiring nightmare when I used to make my Tape Deck/AMP as bad wiring used to quickly pick up 50z 'Hum' noise from AC lines.

Get some 2/3 core Shield wire and use the shield for carrying the (-)ve line. It would surely shield against EMI generated from the Motor/ESC.
As further step, :

1. Inter-weave the three leads from ESC to Motor in a cris-cross fashion like girls weave their hair bun. This would greatly reduce the EMI.
2. wrap the Cam/Tx section with heat shrink and use 2-3 layer of Aluminium Food wrap to cover over the Heat shrink. Solder the (-)ve power line to alum wrap.

And yes Saurabh, I am not clear from above post whether you got the Ferrite Toroid Core or not. I have some high quality toroid core (used in HAM Radio Transceivers) of size used on ESCs. I can send 2-3 to you for FREE if you still don't have them. You can easily find them at Computer/TV repair shop salvaged from burnt SMPS power supplies (but they might not be as good to filter high frequency noise).

Hi Ujjwaana,

Thank you very much for your kind offer. I truly appreciate your kind gesture.

I will surely try the suggested steps and update. I believe shielding the signal wire from the camera to the vTx should definately help. I was wondering if I can use the shield wire used for de-soldering for the purpose. However, it is only single layer but maybe I can wrap it around the video signal wire. Will also inter-weave the motor wires. It surely makes sense.  

Thanks for your suggestions.

I have still not been able to source the Toroid Core. To be honest, I have not even tried to find one religiously. It will be great if you can send some, if you have in spare. And please let me know the cost. I would surely want to pay for it.   Let me know the courier charges as well. I shall transfer the amount to your bank account. Will communicate further on this through PM.

Thanks again for your kind help

Cheers !!!
Saurabh.

Hi Saurabh,
PM me your address. I got these toroid way back in 1996 when I was doing my 10th. Don't remember the price, and am sure they wouldn't have cost more than Rs 5-10 each. the courier would be max 10-25 Rs. So don't bother transferring such small change, unless you want me to send the Rs 20 worth item by Rs 200 worth DHL!

Forget using the De-soldering wire. The 2-core+shield audio wire or other shield wire would be good for your use. I shall pack 30-40cm of them if I find in my tool box.

Cheers

Quote from: ujjwaana on January 12, 2011, 03:28:45 PM
Hi Saurabh,
PM me your address. I got these toroid way back in 1996 when I was doing my 10th. Don't remember the price, and am sure they wouldn't have cost more than Rs 5-10 each. the courier would be max 10-25 Rs. So don't bother transferring such small change, unless you want me to send the Rs 20 worth item by Rs 200 worth DHL!

Forget using the De-soldering wire. The 2-core+shield audio wire or other shield wire would be good for your use. I shall pack 30-40cm of them if I find in my tool box.

Cheers

This is great. Thanks a lot Ujjwaana.

I shall communicate via PM now.

What is the significance of 1500mW in "900MHZ 1500mW Tx/Rx"?  Does this correspond to how much range the system will have?

Yes SunLikeStar. 1500mW is the power of the transmitter. It is true that the more you have on the tx, the better the range. However, the receiver's antenna gain and the type plays the MOST crucial role deciding the range. People have successfully managed more than 2kms on a 200mW setup with Patch/directional antennas at the receiving end..


* Reason for editing: Added the word in green