You are not connected. Please login or register

 » General » Help » Flight Time

Flight Time

View previous topic View next topic Go down  Message [Page 1 of 1]

1 Flight Time on Tue Oct 13, 2015 5:47 pm

Don


Admin
After today's flight i only got around 7 mins of flight before red light started flashing battery low i charged the battery on standard charger day before yesterday and it was windy today do i have settings wrong or does battery drain over few days or could it just be down to the wind





View user profile http://xk380.forumotion.co.uk

2 Re: Flight Time on Sat Oct 24, 2015 11:11 am

Hi Don, Only thing I can see there is your "Low Battery Protect" first warning voltage is set a bit high. Factory setting is 11.20 for first and 10.80 for second stage.
Your first stage is set to 11.89 which could set warning of a little early.

View user profile

3 Re: Flight Time on Sat Oct 24, 2015 11:27 am

Don


Admin
Thanks should have updated I've now changed it after advice think from memory mine is now set 10.89 10.50 and got 20 minutes with gimbal and cam still need some fine tuning

View user profile http://xk380.forumotion.co.uk

4 Re: Flight Time on Fri Jan 08, 2016 11:38 pm

I have some experience with lithium batteries and looking at the level the warning and auto land take place on my FC software, I think there is room for more flight time.
Here is what I am going to do.
3.2v is the minimum voltage a lithium cell can go before doing damage to it.
by my calc's thats 9.6v for the S3.
Taking into account 'voltage drop' which is a temporary spike downward, during use. I think there is more to be had from the battery before initiating the auto land.
I am going to test this out in a manner that wont wreck my 380 and come back with what i find.

View user profile

5 Re: Flight Time on Fri Jan 08, 2016 11:51 pm

Don


Admin
I can't remember who it was but a user on a Facebook group told me his settings were 10.50 warning and 10.00 for landing I did not go that low as its all new to me and heard of some saying they think there battery got to low and caused a fall from sky

View user profile http://xk380.forumotion.co.uk

6 Re: Flight Time on Sat Jan 09, 2016 12:21 am

I have set mine (if i can think without plugging in) 10.75 and 10.00
I noticed that I got the warning light and landed and by the time i got home and plugged the battery in to recharge, the voltage had removed a bit from the set warning voltage and was at 11.4.
So I think the quad is measuring battery voltage+prestent load, and as soon as it touches 11.2 the warning initiates. If that is the case, all that needs to be worked out is a safe auto amount of voltage to get it on the ground before reaching 9.6v.
The warning can go off anywhere you decide before. So if fly low as you really need to be to see it during day flight, does need to be set that much higher than autoland.
At altitude or FPV you are not going to see it anyway.
Just need to sort a safe landing and work out how much voltage is need from say, 400m or so.

View user profile

Sponsored content


View previous topic View next topic Back to top  Message [Page 1 of 1]

 » General » Help » Flight Time

Permissions in this forum:
You cannot reply to topics in this forum