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Showing posts with label battery. Show all posts
Showing posts with label battery. Show all posts

20 August 2013

Starting with FPV with Fatshark Predator and ImmersionRC

August 2013. Now it's time to go one step further and start flying in FPV.

It took me a while until discovering what exactly to buy, reading and asking in forums. As this is not a cheap upgrade, I did want to get it right at once.

So I finally bought the following components:
  • Fatshark Predator pack. It includes the goggles, a camera, and a 2S 1000mAh battery.
  • ImmersionRC 600mw video transmitter, including 5.8GHZ antennas.
  • Immersion RC Spironet circularly polarized antennas, 5.8GHZ.
  • 3S 1000mAh 11.1v LiPo battery for the video transmitter
 Fatshark Predator goggles for FPV
 ImmersionRC 600mw video transmitter
 Spironet antennas
 3S 1000mAh 11.1v LiPo battery

With these you have everything you need in order to start flying in FPV. You can also choose not to buy the goggles and purcharse an LCD screen, there are cheap ones out there.

As this frame is a bit small, I've to place one of the batteries unterneath the frame, so I've bought a plastic landing gear from banggood to avoid the components touching the ground. And it is also a good idea in case of having a crash, because it will absorb most part of the impact avoiding brakings.


So everything put toguether looks like this

Quadcopter FY450

Notice that the wood stick allows me to put the FPV camera on the front, and gives me space to mount the GoPro just behind it with the GoPro mount. So the camera is inside the landing gear (not in the picture now).

 Quadcopter FY450
  Quadcopter FY450

The wire connections of the FPV system are easy. The camera has one wire, that goes to the right side of the transmitter (video, positive, ground). The battery is connected to the black and red wire that goes to the left side of the transmitter.

It is really important, both for the goggles and the video transmitter, to attach the antenna at the first place, and after that connect the battery. Don't do it otherwise!

I also find useful the velcro strap ties, for batteries or whatever you need.

Velcro strap ties


20 July 2013

Battery duration, charging and balancing

I've four batteries: 3 x 2600mAh 3S 20C, and 1 x 3300mAh 3S 20C. They last between 7 and 8 minutes, depending on the flying mode, camera on board.

With the charger you can balance the batteries or charge them. Some people charge them and only use the balance option every 5 or so flights, when the difference between the cells is high. I've been doing this for long time, until someone told me the best is to balance them always. There's a lot of discussion as well about this matter, so at the end I guess you do what it works for you! :)

To fully charge/balance the batteries requires about 45 minutes, depending how much you drain the battery :p. I've a voltage alarm that beeps at 3.70 per cell to stop flying and avoid damaging the battery.