On Jun 21, 2008, at 7:03 AM, Manuel Maseda wrote:
Hello,
Anyone have any experience with Ethernet to serial adapters? Would
it be
possible to connect one to the K3 serial port?
Yes, but the problem you face is that there is no standard way to make
that device look like a standard serial port to the OS running your
logging or rig control software. Make sure that the ethernet-to-serial
adaptor comes with an OS-specific driver that then looks like a
standard serial port to any programs running on the computer. Many of
these devices are intended to accept only a TELNET or SSH connection.
Some EtS device work as a virtual serial cable with one device
attached to the serial port on your computer and another attached to
the serial port on the controlled device (K3 in this case). That does
allow you to control something over a long distance. This approach
seems to work pretty well and I have used this when controlling
devices that have a specific communications protocol.
I have experimented with bluetooth adaptors which are much better
supported in the various OS's as serial devices. Even so I have
experienced mixed results. I have found that, in all my test cases, I
could not change the baud rate under program control and had to use
manual settings. Likewise I couldn't get the control lines, i.e. RTS
and DTR, to change under program control.
So you are going to have to try various devices to see if they will
work. Don't expect perfection.
--
73 de Brian, WB6RQN
Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT com
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