AVR-Chat

No, pneumatics is not a good choice, in terms of energy efficiency.

probably, depending on all factors, a stepper motor with a lead screw 
arrangement will do the job (and you don't need four, three will do the 
job, and with some clever design, maybe even two actuators).

There are also electrical linear actuators, but they tend to be pricey, 
so are probably not a good match for this application (which I presume 
is cost sensitive).

tom

Ümit Şen wrote:
> Thanks Leon and Tom,
> One more question.I plan to set the tilt card (X-Y) and  the cameras on a
> square platform and want to control them via four pistons moving on (Z)
> axis.However,using punomatic is not suitable for robots working
> environment.Can you suggest me a device for controlling the platform?
> Thanks again.
> Best Regards
> Umit
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