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Negative relative alitude at launch

Hi there,

I've been slowly building and tuning my first quad and have noticed a small anomaly I can't figure out.

For some reason, my GPS' relative altitude is showing a negative value both before takeoff and after landing. The value is not consistent

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APM 2.5 input port 1 problem

Hi forum

I've interchanged plus/minus connecting the Lipo.
The ESC and the power module had bin killed
and I've replaced them. The plane worked well
for the next two flights. But today the APM
is not showing any reaction to the input signal
on port 1. I've

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RSSI on OSD through DSMX

I've got the MinimOSD from 3DR and a Spektrum DX6i with AR610 receiver. I would like RSSI info in my OSD.

I can get DSMX out of my receiver, but can APM read this input, or do I need to get DORA and feed RSSI into APM instead?

Thanks,

Nick

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pixhawk gyro correction is reversed

After installing my first pixhawk on a large hex X that had originally an apm 2.5.

Calibrated everything, radio config moves as it should, artificial horizon moves correctly.

Try to fly it and it flips on it's head (sometimes to in the roll axis and so

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Jittery APM-controlled Gimbal

The title says it all. I am using a servo actuated gimbal with the APM as the controller, and the roll axis is very jumpy. It is not smooth, but seems to take large jumps, or steps. This doesn't happen in the pitch axis.

I have tried multiple servos,

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3DR Radio NOT working

So I seem to be having a problem with my data link. It was working once but now I get nothing.

I'm thinking it's because I clicked the "firmware update" button and it only updated one radio, I only say that because now I can not copy the parameters fr

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Barometer acts as thermometer ?

Hi,

I am using APM 2.5 in a plane. Worked without problems till now.  ALT_MIX is set to 1 for 100% barometer altitude. On the last flight missions the plane was always climbing away (flying much higher than it should).

I tried ALT_MIX = 0 which solves

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Pixhawk Arm switch bypass

Hi Guys

Version 3.2 firmware is supposed to have this i understand but i cannot see anything in the Github repository i was pointed to. 

No sign of release version either yet.

I want to see if this gets me past my Esc calibration issues but it looks lik

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Flight modes question Arduplane

Just to first give some background... I have been using APM for about 2.5 years on copter but haven't used it on plane for about two years - so I have a decent sense about how to set up an autopilot... however, I am stumped on this one.  So I am sett

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Unmanned Helicopter users in Cairns

Hi,

Does anyone know of any people looking to start unmanned helicopter businesses in the Cairns area?  We would be interested in talking them if that is the case.  I know that in particular there has been some interest in the area with regards to usi

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