RE: PTZ Home build

["Ian Davidson" <ian@xxxxxxxxxxxxxxx>]

Hi

Probably the most common protocol is "pelco d" another is
"pelco p".
There are many and different camera's only support certain ones. It is a
bit of a minefield. Many manufacturers do not release there protocols or
if they do only under NDA's. The last time I looked there was a small
bit of info on the pelco d protocol, I believe someone had written some
c code to control it. 9600 is common but again there are others (2400 is
also popular) and yes each camera does have an address usually between 1
and 128. Sorry not much help.

Ian D


-----Original Message-----
From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf
Of Neil Wrightson
Sent: 07 March 2006 13:46
To: Ian
Subject: RE: [ukha_d] PTZ Home build

Hi All,

To start up an old thread again.

I wish to make a PTZ camera controller. Any ideas on where I might find
the protocol format for positioning a PTZ camera?
I believe there are a few formats out there, and of course I wish to try
and emulate the most common one.
I know the comms is typically RS485 at 9600 baud. Not sure if it is
bi-directional and I believe that each camera can have an identifier
address.

I will manually drive the RS485 and I wish to have the camera pointed at
a certain X,Y,Z location and at a specific zoom. Then when a input is
received I wish to change to another X,Y,Z location and at a different
zoom.


Regards,

Neil.
-----Original Message-----
From: Brian G. Reynolds [mailto:brian.g.reynolds@xxxxxxx]
Sent: Friday, 2 December 2005 4:35 AM
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] PTZ Home build



Interesting idea....

Must walk along the road and see what I can "find"......

I striped (read, hammer) down a big office printer some time back that
had some good stepper motors and nice nylon gears, with a view to
coercing these into use but I aint got a clue what the circuitry
requires!

I thought of using some car speedo cables with worm gears on the ends as
a make shift PT mech as the camera I want to P&T is only a short
distance from me (on the outside front facia and I "live" in the
loft!)

This is a good site for motor driven things...
http://www.mfacomodrills.com/
<http://www.mfacomodrills.com/>

Food for thought....

B.

-----Original Message-----
From: Hawes,Timothy Edward (GEG) [mailto:haweste@xxxxxxx]
Sent: 01 December 2005 07:28
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] PTZ Home build


Brian,

I had thought about this and wondered whether the electric door mirror
assemblies from cars would make a suitable stating point for the P-T, or
maybe just the T part.

Just a thought.

Tim.

> -----Original Message-----
> From: Brian G. Reynolds
>
> Hi all,
>
> Due to the extreme cost of said PTZ devices has anyone here
> built their own?
>
> I am now using Geovision GV-650.
>
> Cheers,
>
> B.







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