Everything you said before was correct apart one one small thing, the
helicopter will mov forward for 10 seconds not hover, sorry for not
clarifying it too much when i described it. Answering other peoples
questions the helicopter will be tested outdoors on a level surface. The
reason we have to use ultrasonic sensors is that we have no choice because
our college lecturer insists we use them :-(. The main problem that we have
is that we are not really good at the code for the PIC cause we have only
had 12 about 8 weeks experience at it (about.... 30hrs) and he says we can
get any outside help apart from himself.
                  Thanks
                    David

-----------------------------------------------------------------------
On Mon, 8 Apr 2002, David Wilson wrote:

>Hi my name is David and i have been having trouble trying to create an
>auto-pilot based helicopter program. The problem i am having (basically all
>of it really) is that there is 4 ultrasonic transmitters/receivers situated
>on a cradle below the helicopter. These are used seperately to find out the
>time taken for the waves to be transmitted and then received, the times are
>then used to calculate if the helicopter is level.
>    The other part of the program is that the helicopter must take off to a
>height of around 1 to 2 metres fly level for around 10 seconds and then
>land
>again without blowing up!
>            I would be grateful if anyone could help me try and complete
>this
>program, no matter how small information given will be gratefully
>appreciated and would help me a lot. thank you
>                                  David


_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp.

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics