We have had a few FPV (First Person Video) projects on-site up to now but nano FPV is a whole new game. The bare essentials for flying remote video are a camera, video transmitter and receiver. Nano FPV is no different just a whole lot smaller.
On this project page you will learn about Nano FPV, see the equipment with explanation and see my very own first Nano FPV set-up picture guide!
10 mw 5.8gHz Video Transmitter Module, 1.2 gram.
Nano 520 TVL camera, 3 grams, PAL: 768*572
Total kit as it arrived is 4.2 grams.
What's the switch next to the VTX (Video Transmitter)?
That tiny little switch with 8 legs (4 per side) is the video channel selection switch and it needs soldering on the VTX!
First of all here is the wiring diagrams I found on the site I bought from:
The switch position on the top of the VTX with the 8 leg positions.
The VTX has more functions that I will be using, here is the full pin layout.
Camera connection to VTX and power input diagram.
Note the camera model in this diagram is not the same.
Soldering this switch onto the VTX requires a steady hand, not only that you will need a soldering point thin enough to not hit multiple contacts at once. On the diagram photo above they use lots more solder but I didn't, after using my normal amount I tested how strong the points where and it was totally fine. Remember don't cold solder (using iron to melt solder ONTO components, tut tut. Heat components apply solder when hot!)
I simply followed the above pin guide for video and power, now the VTX is fully wired. I used heat-shrink pipe over the contact points to make sure any wire movement doesn't result in an electrical short.
The camera also wasn't so easy to solder with the contact points in the middle opposed to the normal side points. Again this required slow work paying attention to not use excessive solder. I normally apply a tiny bit of solder to the end of the wire then use that to get a hold while it heats and then bonds as one.
The power is split between the VTX and camera so only 1 lead is for power input, I am using a 1 cell 3.7 volt 150mAh Lipo battery to power this set-up.
The soldering iron I used for most of it. A "use anywhere" 12v powered iron which gets hot super fast.
Finally a test run using my laptop to take the video signal from the video receiver unit. As you can see the Nano FPV set-up works perfectly and I'm super happy.
The final weight of the set-up without them temporary crocodile-clips I used is 5 grams! This is all ready to go on it's first maiden flight when the weather allows it. The set-up looks pretty difficult to do and if you've got no soldering experience then I would suggest asking someone who has, this is not for the beginner. I hope you find this guide helpful and here is some more specifications on the components I used:
http://fpvhobby.com/transmitter/21-2-55-volt-500mw-24ghz-video-transmitter.html
10 mw 5.8gHz Audio Video Transmitter module.
Size: 20x20x4mm
Weight: 1.2g
Current: 70mA
Ch1:5705mhz , Ch2:5685mhz , Ch3:5665mhz , Ch4:5645mhz , Ch5:5885mhz , Ch6:5905 , Ch7:5925mhz , Ch8:5945mhz
Channels selection are below:
Ch1 pin + Ch2 pin + Ch3 pin connect to ground (Channel 1 - 5.705 gHz)
Ch2 pin + Ch3 pin connect to ground (Channel 2 - 5.685 gHz)
Ch1 pin + Ch3 pin connect to ground (Channel 3 - 5.665 gHz)
Ch1 pin + Ch2 pin connect to ground (Channel 5 - 5.885 gHz)
Ch3 pin connect to ground (Channel 4 - 5.645 gHz)
Ch2 pin connect to ground (Channel 6 - 5.905 gHz)
Ch1 pin connect to ground (Channel 7 - 5.925 gHz)
DEFAULT - no connect to ground (Channel 8 - 5.945 gHz)
