Servers by jDrones

Red battery voltage in HUD

The battery voltage is red in HUD although it’s high enough.
Shouldn’t it be white ?
Is it a bug ?

MP 1.3.73
ArduCopter 4.0.3
4.0.3-20200904.param (19.9 KB)

You can set warning levels here

It is somehow tied to speech warnings, but once you set you can switch off the speech.
Default values are 9.6 volts and 20% capacity remaining.

thank you for your reply.
I have configured the battery monitor and arming check, see parameters.
The copter can be armed, the battery isn’t low.
So the question is why does MP warn ?

Missionplanner is doing the same thing to me and my parameters are correct. Started with MP 1.3.73.

Did you guys misses the red circle ? Check it and set the warning levels.
MP_ HUD red battery warning is independent from the FC settings.

1 Like

Even with warning levels set I’m still having the same issue

Look for these two lines in Documents/Mission Planner/config.xml


Are they there ? (Values may be different)

No, they aren’t there.
The “MP Alert on Low Battery” is switched off.

I can turn HUD Bat into white if I edit the PreFlight check values:

and disconnect and reconnect.

This is a bit confusing since this is a “per MP config”, not a “per UAV config”.
I have UAVs with 2S, 3S and 6S.
So which battery level shall I configure ?

You have to switch the check box on, it will present dialog boxes to set the values.

that is even more confusing.
You have to enable audible warnings to configure visible warnings ?
Also the batt voltage seems to be the same as under “Preflight-Edit”.

Ok, I concur, it is quite confusing. I added a pull request which change this behavior to honor BATT_LOW_ and BATT_CRT_ parameters. I hope @Michael_Oborne will merge it soon and it could be included in the next beta.

Great, thank you very much !

Servers by jDrones