Position stability

[Droneman]

Hello, i am a developper , i'm working for a new project new frimeware, actualyt i did the stability of the roll , yaw pitch, but now i want to hold the drone in a position, crazy fly has not gps, so what is the technique that stabilize the drone in a position ? is it with accelerometer ?
thanks

[kristoffer]

The accelerometers can roughly hold the position but it will drift. The Crazyflie does not really have any information of it's absolute position so what you need is an external reference system. Take a look at https://wiki.bitcraze.io/misc:hacks:kinect for inspiration.

[Droneman]

Thanks, but i don't want to use Kinect, i want to integrate my own command control"sliding mode" on the crazyfly. i need more information about accelerometr and gyroscop.

[marcus]

I'm not sure it's possible to hold it in place using only the accelerometer and gyroscope. I would recommend some external system (like the Kinect or webcamera).

[Droneman]

How ?

[marcus]

See this blog post.

[Droneman]

Thanks, i want to speak with one of your developpers.
I am an engineer in embedded system, and i ma verry intersted of bitecraze project,
could you give me a skype or facebook , of one of thoes develooper
best regardes

[derf]

@Droneman: You are already speaking with two developers (marcus and kristoffer)!