FPV HUB

Multicopter => Multi Copter => Topic started by: JezUK1 on May 08, 2013, 01:18:32 PM

Title: Settings for DJI450
Post by: JezUK1 on May 08, 2013, 01:18:32 PM
What is the best settings to have here?
What I don't understand is why it powers down at 11.3v

Title: Re: Settings for DJI450
Post by: CurryKitten on May 08, 2013, 01:24:14 PM
The best setting is "off", if you've got no OSD to tell you voltage, then use a cheap lipo alarm - and get used to how long it flies and set your timer accordingly on the radio.  I speak from bitter experience of being auto-landed when I didn't want to be.

Did it alarm/land at 11.3, or is that just the voltage you checked afterwards... in which case without the load the lipo will recover a bit.

Anyway.... turn it off :)

Title: Settings for DJI450
Post by: JezUK1 on May 08, 2013, 01:50:49 PM
It's very odd I will fly and it will start losing power at around 11.5v. By 11.3 it lands.

But it's not set to land then. That is what is confusing me so I'm going to turn the bloody thing off. I will go by my OSD. But need to find out why it lands even when not set.
Title: Settings for DJI450
Post by: JezUK1 on May 08, 2013, 04:10:15 PM
Will do. When it stops raining I will try and test it.
Title: Re: Settings for DJI450
Post by: cortex on May 08, 2013, 06:21:53 PM
Quote from: JezUK1 on May 08, 2013, 01:18:32 PM
What is the best settings to have here?
What I don't understand is why it powers down at 11.3v



There are no best settings as the settings you input are based on the lipo your using. You have to fly your quad and then do some calculations with voltages to determine the optimum settings.


Quote from: CurryKitten on May 08, 2013, 01:24:14 PM
The best setting is "off", if you've got no OSD to tell you voltage, then use a cheap lipo alarm - and get used to how long it flies and set your timer accordingly on the radio.  I speak from bitter experience of being auto-landed when I didn't want to be.

Anyway.... turn it off :)




Best thing to do if your doing fpv! you do wouldn't want it auto landing in a lake!
Title: Settings for DJI450
Post by: JezUK1 on May 08, 2013, 09:40:47 PM
This is true. I fly FPV so I don't even see the red light. I will go by what it says on screen. 10.5v time to land.
Title: Re: Settings for DJI450
Post by: rchobbyaddict on May 13, 2013, 09:00:52 AM
Do a full charge and calibrate the voltage, I highly recommend that you go in for the new firmware first. But yes, you should turn it off.

Go in for the following alarm:
http://www.rctimer.com/index.php?gOo=goods_details.dwt&goodsid=569&productname= (http://www.rctimer.com/index.php?gOo=goods_details.dwt&goodsid=569&productname=)


DO NOT go in for the HOBBYKING version. For some reason, even after setting the threshold as high, they start beeping the very moment you take of. I guess there is a sudden drop in voltage so that triggers the alarm. But The RCTimer ones do not do that.

I have been using these since a long time now and they are the best and really loud!!!
Title: Settings for DJI450
Post by: JezUK1 on May 13, 2013, 04:27:13 PM
How do you calibrate the voltage exactly?
Title: Re: Settings for DJI450
Post by: DaveyLC on May 13, 2013, 06:07:54 PM
Measure the voltage with a meter and apply the offset in the Naza assistant I believe :)

but as discussed the Naza voltage  protection is a waste of time :( If you're going to use it just set it to something stupidly low as a last resort so you don't totally cripple your lipo :)
Title: Re: Settings for DJI450
Post by: rchobbyaddict on May 14, 2013, 05:52:33 AM
Yes, turning it off is the best option. Just have a tap on the flying time. Set a timer on your radio.