we are building a remote controlled helicopter for the ex1 and we need an remote control for about 1.5 km for the ex1 functions (rec, zoom, iris,etc...)
dos anybody have the protocol for the lens control connecter?
or any company that sell such a device?

Thanks

You might be able to do it with the EX3, but with EX1 - no way, I'm afraid.

why ex 3 and not ex 1 its the same lens?

why ex 3 and not ex 1 its the same lens?

Yes, but you cannot control anything other than zoom with it.

The EX3 also has a socket for the full-blown profesional Sony controllers at the back, so the protocols you need are there...

and why do they sel a remote contol for the ex 1 where you can do zoom and rec.
adn its conected to the lens remote connecter.
VariZoom | VZ-Pro-EX Comfort-Grip Zoom Controller | VZ-PRO-EX (http://www.bhphotovideo.com/c/product/543232-REG/VariZoom_VZ_PRO_EX_VZ_Pro_EX_Comfort_Grip_Zoom_Controller.html)

Yes, as I said - all you can do with these controllers is zooming and record start/stopping (some also offer the RET function, to preview the last take). That's it - and you mentioned focus, iris, and what-not :)