Multirotor, multicopter and quadcopter discussion - The Drone thread

Got it from here in the UK...

http://uavision.co.uk/

Only problem is I'm not sure it works with A2, works with Naza though. Might be worth doing some research... Would be handy for logging flights for CAA. You can export data as CSV files to use in other programs also.
 
Yeah just looking at that, tried to call a shop but they didn't answer.

The unit seems just like a bypass of the GPS data so I'm not sure why its so restrictive on capability. Seems it doesn't support the A2 though, all I can find is a cached tweet on Google (though can't find the actual tweet) which says they're working on supporting the A2 and Wookong.
 
I'm really worried that I'm not charging our LiPo's correctly; I'm 99% sure I am but they seem to charge so fast considering they're 12,000mah.

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Only changeable elements there really are charge (12amps) and the charge rate (1C) .

Both of these batteries were on 29% and 31% pre-charge and they've completed in a shy over 40 minutes.
 
Charging at 1c allows you to charge up your battery at 1 times it's capacity in an hour, to my understanding, same as a 30c discharge rate would be being able to discharge the battery at 30 times it's capacity per hour(?) maximum. So from ~30% capacity to full in somewhat less than 1 hour is about right, no? Happy to be corrected!
 
Certainly sounds like it could be right, but then surely no battery would ever take longer than an hour to charge, which they do (judging by some people on Google saying theirs take 1.5/2 hours etc).
 
When they say it charges at 1C that's 1C MAX, you'll notice that most chargers ramp up and ramp down the current at the beginning and end of the charge cycle respectively, you also get a little longer for balancing too. From ~20% I've found a balance charge takes about 70 minutes.

If you've got a battery that's been close to exhausted then I can see it taking 1h30m. If it's taking 2h my guess would be they aren't charging at 1C, they could have set the charger to 1C but their PSU may not be up to the task and can't provide enough juice if it's a large battery or they're charging more than one battery at a time.

You prolly already know but they don't work with SDHC cards, doesn't sound a big deal but it's quite hard to find old MicroSD cards... I ended up getting two 1GB ones on ebay for a fiver. The flight files are only about 270k each though
Yeah, thankfully I saw that on their website before I ordered, bit of a pain as like you say vanilla microSD cards are like rocking horse poop.
 
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I managed to get one off the bay for £20 more expensive but it was available :-) I've nicked 2 feet off that one but plan to do a rebuild to eliminate banana plugs + PDB then add the cage hoping it will be weight neutral.

I've also got some fluorescent yellow and orange paint, considering painting the frame, the arms or just the feet for orientation.
 
Russ, your charge times sound fine by the way.
I charge my 6000mAh packs at 6 amps (which is 1C) and they take about 50 mins from 15%.

I expect that some people are reporting longer charge times because they have rubbish chargers. Many of the cheaper units will only charge 6S packs at 50 Watts which is only 2 Amps. They will let you set a higher rate but they then throttle down to 50 Watts.
 
My HK FPV250 turned up earlier. Took me 2 hours to put the motors and flight controller board in, thats with 30 mins of fapping about trying to figure out how the motors connected to the frame :eek:

Still waiting on the receiver to turn up so I cant complete it yet :(
 
^ I hope you used threadlock on the motor screws. I rushed to put mine together and took it right out for a hoon, came back in and had another fiddle with it and found that nearly all of the screws were on their way back out :eek:

e: Did you get the updated 1704 motors?
 
No to the threadlock. Once its up and flying Ill check the screws, if they've moved then Ill do it. Yes the motors are the 1704.

Think it will be a week until its all done. Ive had no confirmation yet that the receiver has been shipped.
 
Sadly not, they do have screw holes which line up perfectly with the frame and the AFR kit comes with screws.

The real problem is that they are made of butter. The AFR kit supposedly comes with "V2" motors, which are apparently better built
 
Just sorted out the electrics & fc board and powered it up. Everything seems ok. Also might invest in the cage that goes underneath to tidy up the wiring/battery etc. Looks like a bowl of spaghetti at the moment :)
 
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