Setting Up Voltage Monitoring

Av8Chuck

Av8Chuck

Member
I have a Hex with:

Avroto 2814 motors
Graupner 12" E-Props
RCTimer 30A ESC's
NAZA w/GPS
5800mAh 4S batteries

After solving an issue with arming I took it out for its maiden flight. Took off in Atti mode after liftoff and increasing the throttle to about 65% I started getting a flasshing red LED and a couple of seconds later it landed. Nice to see that it worked. Switched to Manual and it took off and flew fine, however, since I had a flashing red LED I decided to take it home and check into why this was happening. I checked the battery and it still had 80% left, I have not re-charged it to see how much it takes.

In the Voltage Monitoring setup of the Assistant I just chose 4s in the drop down menu and left everything else as it was. What numbers should go in there and how do you figure it out?
[h=2][/h]
 

OneStopRC

OneStopRC

Dirty Little Hucker
There is some videos on youtube that sort of explain how to do it. I watched the video, but it seemed a bit odd the way he was showing things and how to get them numbers. I was told not to take the cells lower than I think it was 3.6 volts, all I did was use 3.6 x 3 cells to equal 10.8 volts as my absolute minimum. I added 0.5 to the total to start the warning of low voltage, when it hits the absolute minimum it will land itself. Works for me, I get between 12 and 15 minutes, 15 being without my GoPro mounted.

Might not be the correct way of doing it, but it is a simple way which should protect my batteries for a while. not like the old Ni-Cad days are they? lol.... Now don't take my way of working it for granted, it just works out right for me, when I remove my battery it still has a good capacity or voltage per cell. Sorry, I do not have an expensive charger that works all that out for me... well not yet anyway.
 

Av8Chuck

Av8Chuck

Member
Thanks for the reply.

I'll check that out and see if I can't come up with some sort of meaningful formula/explanation. I think your on the right track, I usually only fly for five or six minutes and like to land with around 40%.

This subject seems to be a bit vague.
 


Av8Chuck

Av8Chuck

Member
I think they're 12x6.

Because of the issue I had with the "Low" Voltage protection setting I didn't fly enough to get a feel for how these props compare to the 11" SloFly's, also I'm using a Rusty UAP1 frame with rubber isolated motor mounts so it appears to be very smooth and quiet, but I don't know whether to attribute that to the mounts or the props.

My first impression was how smooth and solid it flew but that it felt a little underpowered. With the same setup and the 11x4.7 props it lifted off at around 35-40%, with these props it sounded like there was more RPM and it lifted off with a little more than 50%.

Hopefully I'll have a chance to shoot some aerial with it soon and I will post the video.
 

Droider

Droider

Drone Enthusiast
Aye Up Av8.. nice to see you back.. New machine to.. ill looking forward to seeing the footage.

Where did you get 12 E props from?

Dave
 

Av8Chuck

Av8Chuck

Member
Hi Dave, its nice to be back. Not sure where I got the Graupner props, I started this build over a year ago and someone recommended them.
 


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