Battery and Naza M software

[Richlizard]

Hello again!

After just watching a video on setting up Naza, it got me wondering if I was perhaps thinking my phantom could actually fly for a lot longer than I originally thought, but obviously I wouldn';t want to push the boundaries too far.

My timers on my Futaba are currently set at 5:15 (get it home) and 6:15 (it';s dropping right now). I lowered these recently when it started to get a little cold and windy and I knew I would have less time in the air.

The Naza voltage protection settings actually coincide pretty well with this and at around 6:15, I struggle to keep it hovering as Naza tries to land it.

Those settings are:

1st protection
NoLoad 11.55v no loss Load 11.55v

2nd protection
Noload 11.10v no loss Load 11.10v

But I was interested to see just how long I could fly for when it just gave up the ghost (the bloke in the video did it, don';t scream at me!!). I gave it a good fly around for well over 5 minutes so it was put under some pressure (not too windy today mind) and I then brought it home and just moved it around a little a couple of feet off the ground. It finally gave up the ghost - at around 8m 30 seconds!! So well over 2 minutes longer than I have programmed in. Even with a good safety factor built in, it feels like I have been a little too conservative with my limits.

So I checked the battery voltage immediately after flight... 10v 

So based on that info, would it make sense to perhaps set my limits to something perhaps as low as 11v/10.7v before I get my warnings?

And set my alarms accordingly for maybe 7m and 7:45m?

I realise we need to err very much on the safety side of things, but think perhaps I have been overdoing it.

Any thoughts?

Cheers

[Friskle]

I dont use the low voltage settings on my Naza , nor do i use them on my WKM, because i got sick and tired of short times, so, started to time flights, bringing them back at given times, then checking, on average, on varying battery types, i was always getting at minimum 2 minutes 30 seconds of extra flight time while not using low voltage protection, and the batteries always had enough left to keep things safe.

[Richlizard]

Love the idea Friskle.

My only concern would be - apart from obviously forgetting the timer - that if the battery was to go real low for whatever reason, wouldn';t you then lose the option of it landing softly and it would just fall from the sky?

Don';t want to tempt fate of course  ::)

[Biffa]

Love the idea Friskle.

My only concern would be - apart from obviously forgetting the timer - that if the battery was to go real low for whatever reason, wouldn';t you then lose the option of it landing softly and it would just fall from the sky?

Don';t want to tempt fate of course  ::)

With the Naza voltage protection you lose all ability to land yourself once it has decided the pack is too low. Much better to time your flights and make hitting the timer part of your routine.

Id rather know where I landed my rig, rather than letting the Naza dump it anywhere it chooses.