Hi

If I want to build a Mikrokopter that has GPS, Navi CTRL, Compass, ACC , and camera movement compensation

How many channels should my Transmitter have at minimum ??

Thanks

Khaled

4 channels for controlling MK
1 channel for camera movement
1 channel for GPS (Come Home + Position Hold)

As for altitude hold, you can assign this function on GPS-->Position Hold. When Position Hold is selected, then altitude hold is also active. Or you can assign an extra channel for altitude hold.

You will also need a channel for camera shooting.

That can't be answered generally. It depends on how you want to use different functions independent from others.
As example: GPS and Altitude can be use with one switch. Some like that, others don't. Altitude can also be used by a switch or a poti.
Even this small example gives you three possibilities.

The MK can use 8 channels as maximum. If you want to use more you'd have to reprogram the FC-software. So its a good idea to buy a transmitter which gives you at least 8 proportional channels.

xenios meinte

You will also need a channel for camera shooting.

Can't give this a real yes. It is also possible to work with cams that can be scripted (keyword: CHDK).

But as xenios said: the minimum for your needs are 6 proportional channels.

xenios meinte

1 channel for camera movement

Is it possible to use only one channel for camera tilt and pan (2 servos ??)

Thanks a lot

Khaled

Khaled,

I'm not an expert, but I imagine that a Y lead connected to 2 servos would do the job...somebody may say that I'm wrong though.

ChrisE meinte

... a Y lead connected to 2 servos would do the job. ...

That won't do the job. It gives the same signal to both servos. When you nick you'd also roll at the same time.

From my point of view there is no real need to control roll. It just helps to keep the camera horizontal. It is more important to control nick. This gives you the control of the perspective in the picture.

khaled_abobakr meinte

xenios meinte

1 channel for camera movement

Is it possible to use only one channel for camera tilt and pan (2 servos ??)

Thanks a lot

Khaled

Hi Khaled!
You don't need an extra channel / servo for panning as you can simply (and better) use all of the MK to pan around 360°
The MK3MAG onboard makes things way easier in order to control your panning. No drift around the Z axis.
A camera panning while the MK keeps heading would undoubtly take into view parts of the MK possibly ruining the scene.. much better to use the MK

Just as they said: min 6 proportional channels to control a MK + MKGPS. I personally prefer to separate Altitude swith and GPS switch.

Regards