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Flight Mode and GPS Error Codes

Hi, I've made the same post on apm, however no one thought it was interesting enough to read, but I badly need some answers from knowledgeable people so doubling it here: 

Last Sunday crash-finished my 50+ flight with the current setup. Unfortunately

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APM Failsafe

From my work in attempting to figure out Failsafe i see that the APM ALWAYS treats the throttle channel as the failsafe channel i.e RCMAP_THROTTLE in the full parameter list. Can i change what channel is used to determine failsafe i.e for me it is RC

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STB_PIT_P and STB_RLL_P

My Iris has STB_PIT_P value of over 7 and STB_RLL_P of over 10 and Droneshare flagged them as bad entries. The APMCopter manual says values of 3.0 to 6.0 are the acceptable range. I wondered if Pixhawk had a different value range and if these values

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New LEGO drone

Thought I would share the latest LEGO design.

Design pattern that we call Digital Sky

Frame designed and created by Ed Scott, 3D parts designed and created by Nick M

Lightweight

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Small and simple to use FC.  

Top is removable for easy maintenance and repai

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nmea extension

now gps nmea library is support GPS mesages only

GP is Talker ID (GP for a GPS unit, GN for a GLONASS)
Mediatek 3333 & ublox lea 6 h support glonass system
as example mt 3333 after gps and glonass fixed output mesages changes
from $GPRMC to $GNRMC and

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Play in motor casing

While tuning my hex one of the carbon props clipped a bit of wood on the test bench. 

Oddly enough there was absolutely no damage to the 14 inch carbon prop whatsoever, but when I rotate the can of the motor off axis I can now feel a little bit of pla

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Uncommanded roll

Yesterday I flew my APM controlled quad for the first time in a couple of weeks. I lifted off in stabilise and shifted to alt hold at about 3 metres. After a second or so, without me asking it to the quad did a 360 degree barrel roll and fell a coupl

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arducopter compass gain

i have tests of apm 2.5.2 with disabled compass

internal gyro only works better than "gyro + compass"

with compass + gyro if i do fast rotation at 180deg. i see in mission planner another angle, after 5-10 seconds this error slowly fixed (gyro correcte

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