System identification

Hi All

Has anyone done a system identification on their quadcopter and established the effects of the gains on their setup? I would like to pursue this but getting data off my quad. 

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DJI S800 query

Hi All

I am looking at using the rctimer speed controllers on a custom UAV(ie. controllers on the arms). I need to know if there are any objections to this method and also as per the schematic as to why the board from rctimer has 4 inputs?

Im guessing

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DJI S800 Chassis/Frame

Hi All

Lately I have been analysing chassis from a static point of view and have noted something very odd about the DJI chassis. For the asking price of 1000$-2000$ I felt very naive at first. I then started to analyse the copter from a statics points

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T-motor specs

Hi

I have been looking at specs posted by t-motors on the 300KV motors:

Lets assume a model mass of 3kg(1.2kg of batteries the rest dedicated to the chassis, motors and controllers) on a quad, this is 0.75kg per a motor or 750grams of thrust to sustain

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APM 2.5 MANUAL LANDING

Hi All

Im very new to APM. I have been trying to landing my copter manually and have been struggling. I cannot seem to drop the throttle accurately enough to get near the ground and fully power down. Majority of the time the quad will drop out 30-60cm

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