here’s the ID: FTDIBUS\VID_0403+PID_6001+9&37553076&0&2\0000

Serial number is 37553076, right?

Works surprisingly well with 1MBd, but DTR, RTS pins have insufficient drive capability.

]]>looks your math gives the same result for thrust I found here:

http://www.dept.aoe.vt.edu/~lutze/AOE3104/thrustmodels.pdf

Here are more examples of flight time and efficiency for different types of copters (gasoline, electric, man powered)

]]>i want to design a quad copter that can lift 600kg can tell all about ]]>

I have a system which i need to determine pitch and yaw angle.

The problem is Drift !

Even i have the bigger problem that i have no time to calibrate sensor in stationary position, because system is not fix when gyro start working !!!

Can you help me with this?

Thanks best regards ]]>

So your final model is only available when the object is not moving since it is all based on the R = 1 ! I wonder how would it work if we are only interested in the dynamic behavior of the sensors

]]>I like your approach, very interesting yet something I didn’t understand is the fact that you assumed that your R vector is always equal to 1! this is only available when you’re object is not moving ? am I missing something ?

Thank you

]]>DCM Tutorial paper

I made this observation previously without a reply regarding the formation of the DCM using K^B=-A and I^B=M using acc and mag measurements. These two vectors are not orthogonal hence can not be used in the DCM. However J=KxI is legitimate being normal to K & I.

The proper DCM would be: [(AxM)xA AxM A] where A and M is acc and mag measurements respectively .

]]>Thanks a lot! ]]>

I have a question:

you defined x =RxGyro , y=RyGyro, z=RzGyro;and then you said

x/ SQRT(x^2 + z^2) = sin(Axz).But as the picture shows, sin(Axz) should be equal to Rx/Rxz. So i don’t understand what’s the relationship between RxGyro and Rx, RxGyro^2 and RzGyro^2 ? I’m much too confused,looking forward to your reply，thank you! ]]>

This is incorrect. Work is the time integral of power or vie versa power is the rate of change of work. Say you push a block on a surface. Work is how much energy to push from A to B. Power is the rate at w.ich you did it.

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