Battery alarm goes off too soon?

[Mullet]

It seems on my 180mm racer quad that the battery alarm is going off too soon. If I have the first alarm set for 3.5v then I shouldn't hear a beep from my buzzer until 10.5v on 3s. It seems I'm getting the alarm at 11.4v. Any idea what might be causing it to alarm earlier than it needs to?

[Mullet]

No one has anything to say about this?

If I have my 3s battery hooked up to ADC correctly then the first alarm should come on at 10.5v not 11.4v. Could it be voltage sag that is causing this?

[aBUGSworstnightmare]

Hi,
what are your settings for the unmanned system?

Check these as well!

[Mullet]

I think I had them match the voltages I was looking for. I'll have to double-check though.

I haven't worked with the craft in a few weeks. I had some bad luck with this craft and lost a motor while in flight. Since replacing the motor now I'm having weirdness with the motors getting really hot and twitching. I actually got magic smoke on the one I replaced, so now I have to replace it again.

[aBUGSworstnightmare]

[Max]

Yea did you lower the attitude PIDs? I had to go way down on my 200mm with 1306 motors . With defaults they got very hot, very quickly (in seconds). That may account for your voltage issues too.

And BTW, log a flight and check the VIN values to get an idea of what is going on with onboard voltage (and everything else). We can't really tell what is going on w/out a log either.

-Max

[Mullet]

Good ideas guys... however, I had this tuned already with Quatos. This behavior didn't start until I had that bad crash and lost the motor. It basically came unbolted while in the air. So I think it maybe be ESC related. I'll start a separate topic about motors getting hot and twitching, etc.

Back on topic... I'll try and gather some logs about the voltage and report back.