¿ªÔÆÌåÓý

  1. Gemini-II
  2. Topics

RS-232 Wiring for Gemini 1 and Gemini 2

[email protected]
 

I have add another page for the RS-232 wiring of both the Gemini 1 and Gemini 2 to my web site



Tom Hilton
 

I know you can communicate with the Gemini 2 via the web interface but when will this antiquated practice of 9 pin serial finally come to an end and move on to USB. I see USB connectors on the new Gemini and hope that these are usable in place of the RS-232 cable.

Dave

--- In Gemini-II@yahoogroups .com, "tom@..." <tom@...> wrote:

I have add another page for the RS-232 wiring of both the Gemini 1 and
Gemini 2 to my web site



Tom Hilton
Rainer
 

Hi Dave,

" ... but when will this antiquated practice of 9 pin serial finally come to an end ... "

I hope never ! as a RS232 serial connection never hangs up and the Sh...y USB, be it whatever version, if it hangs up you need to unplug the cable and reset it in that way ... If you have a solution for unplugging a USB cable remotely I would be very thankful :-)

I wish you many USB hang ups :-) and you will pray for having an Antique RS232 serial connector somewhere ...

Happy unpluggings :-)

regards Rainer

--- In Gemini-II@..., "david" <david.lane07@...> wrote:

I know you can communicate with the Gemini 2 via the web interface but when will this antiquated practice of 9 pin serial finally come to an end and move on to USB. I see USB connectors on the new Gemini and hope that these are usable in place of the RS-232 cable.

Dave

--- In Gemini-II@yahoogroups .com, "tom@" <tom@> wrote:

I have add another page for the RS-232 wiring of both the Gemini 1 and
Gemini 2 to my web site



Tom Hilton
 

Here Here! I agree completely with Rainer. There is nothing as stable and trouble-free as good 'ole RS-232 or RS-422. The amount of bandwidth needed for communicating with positional or slow devices is very adequately met by serial communication. USB is complete overkill and causes way too many headaches. USB is a kludge. Anyone remember Bill Gates CES demo of the first appearance of USB? What a laughing stock he was made to look.


May RS-232 live forever!

Keith

--- In Gemini-II@..., "Rainer" <rsbfoto@...> wrote:

Hi Dave,

" ... but when will this antiquated practice of 9 pin serial finally come to an end ... "

I hope never ! as a RS232 serial connection never hangs up and the Sh...y USB, be it whatever version, if it hangs up you need to unplug the cable and reset it in that way ... If you have a solution for unplugging a USB cable remotely I would be very thankful :-)

I wish you many USB hang ups :-) and you will pray for having an Antique RS232 serial connector somewhere ...

Happy unpluggings :-)

regards Rainer
 

Seriously? I had computer stores in 1979 and wired this frakking things. I hate RS232 with a passion that will never end I suppose.

The funny thing is you have to have a USB adapter to attach to the RS232 cable. And having been in technology all my life I've never even heard of a USB cable hanging up somehow. Never happened to me at all. What actually happens?

--- In Gemini-II@..., "Keith" <keith.myers@...> wrote:

Here Here! I agree completely with Rainer. There is nothing as stable and trouble-free as good 'ole RS-232 or RS-422. The amount of bandwidth needed for communicating with positional or slow devices is very adequately met by serial communication. USB is complete overkill and causes way too many headaches. USB is a kludge. Anyone remember Bill Gates CES demo of the first appearance of USB? What a laughing stock he was made to look.


May RS-232 live forever!

Keith

--- In Gemini-II@..., "Rainer" <rsbfoto@> wrote:

Hi Dave,

" ... but when will this antiquated practice of 9 pin serial finally come to an end ... "

I hope never ! as a RS232 serial connection never hangs up and the Sh...y USB, be it whatever version, if it hangs up you need to unplug the cable and reset it in that way ... If you have a solution for unplugging a USB cable remotely I would be very thankful :-)

I wish you many USB hang ups :-) and you will pray for having an Antique RS232 serial connector somewhere ...

Happy unpluggings :-)

regards Rainer
 

¿ªÔÆÌåÓý

Guys,

Don't worry, G2 can make all of you happy. There are plenty of old RS232 connections (USB for sure imposes a huge overkill if you only want serial communication): 2 with very ruggedized line drivers and another two using TTL level. Since I was sure that someone will ask for a direct USB connection, it is there. Maybe one needs a driver information file for the PC operation system that is used, but it works with Windows XP and with some minor adaptions also with Windows 7. Works well with ASCOM, TheSkyX Pro, GCC, Hyperterm, ...

Since this may not be enough, the serial commands can also be sent over HTTP/TCP/IP/Ethernet. I invented a "serial port emulator" since I wanted to make every serial command available over the web interface, too. Works well for ASCOM and for web pages.

After all, presently there are 6 separate channels to control a G2, using 4 different types of hardware. All are supported by software. Should be enough for the start. Once I find the time I may add a telnet serial emulator and so on, this is already prepared...

And yes, I'm programming and wiring for RS232 since 1978, and it still can be mean and tricky every now and then. And, also yes, I saw USB connections hanging up, especially if the wires got longer. I also saw my preferred FDTI USB2serial converter garble characters through several resets until I powered it off for at least 30 seconds... every technology has its limits and it is important to stay on the safe side.

¸é±ð²Ô¨¦

david schrieb:

?

Seriously? I had computer stores in 1979 and wired this frakking things. I hate RS232 with a passion that will never end I suppose.

The funny thing is you have to have a USB adapter to attach to the RS232 cable. And having been in technology all my life I've never even heard of a USB cable hanging up somehow. Never happened to me at all. What actually happens?

--- In Gemini-II@..., "Keith" wrote:
>
> Here Here! I agree completely with Rainer. There is nothing as stable and trouble-free as good 'ole RS-232 or RS-422. The amount of bandwidth needed for communicating with positional or slow devices is very adequately met by serial communication. USB is complete overkill and causes way too many headaches. USB is a kludge. Anyone remember Bill Gates CES demo of the first appearance of USB? What a laughing stock he was made to look.
>
>
> May RS-232 live forever!
>
> Keith
>
> --- In Gemini-II@..., "Rainer" wrote:
> >
> > Hi Dave,
> >
> > " ... but when will this antiquated practice of 9 pin serial finally come to an end ... "
> >
> > I hope never ! as a RS232 serial connection never hangs up and the Sh...y USB, be it whatever version, if it hangs up you need to unplug the cable and reset it in that way ... If you have a solution for unplugging a USB cable remotely I would be very thankful :-)
> >
> > I wish you many USB hang ups :-) and you will pray for having an Antique RS232 serial connector somewhere ...
> >
> > Happy unpluggings :-)
> >
> > regards Rainer
>
William Carroll
 

¿ªÔÆÌåÓý

Put the USB on a powered HUB

Then remotely control the power to the HUB

Turning power off on the HUB will disconnect the USB port that way

?

Just a thought

?

Doug

?

From: Gemini-II@... [mailto:Gemini-II@...] On Behalf Of Rainer
Sent: Friday, March 18, 2011 11:31 AM
To: Gemini-II@...
Subject: [Gemini-II] Re: RS-232 Wiring for Gemini 1 and Gemini 2

?

?

Hi Dave,

" ... but when will this antiquated practice of 9 pin serial finally come to an end ... "

I hope never ! as a RS232 serial connection never hangs up and the Sh...y USB, be it whatever version, if it hangs up you need to unplug the cable and reset it in that way ... If you have a solution for unplugging a USB cable remotely I would be very thankful :-)

I wish you many USB hang ups :-) and you will pray for having an Antique RS232 serial connector somewhere ...

Happy unpluggings :-)

regards Rainer

--- In Gemini-II@..., "david" wrote:
>
> I know you can communicate with the Gemini 2 via the web interface but when will this antiquated practice of 9 pin serial finally come to an end and move on to USB. I see USB connectors on the new Gemini and hope that these are usable in place of the RS-232 cable.
>
> Dave
>
> --- In Gemini-II@yahoogroups .com, "tom@" wrote:
> >
> > I have add another page for the RS-232 wiring of both the Gemini 1 and
> > Gemini 2 to my web site
> >
> >
> >
> > Tom Hilton
> >
>
 

You can freeze your PC very easily with a USB device, it gets hung up in an endless loop demanding PC resources and brings everything to a screeching halt. It happens frequently with my USB cameras if I attempt to do something I/O intensive on the PC at the same time the cameras are downloading or changing filters or whatever. You will have a totally unresponsive computer until you pull the USB connection and everything comes back to life. I have never worried about a RS-232 connection hanging up a computer. If the serial connection ever does hang, a simple CTRL-C is all that is needed to end the hangup.

Yes, I do have to use a USB-Serial adapter to give my computers a serial connection now. The parallel and serial port is considered legacy hardware on PC's now. I also learned the hard way that only one type of USB-Serial adapter is worth using, ones built on the FTDI chipset. All others are garbage.

Keith

--- In Gemini-II@..., "david" <david.lane07@...> wrote:

Seriously? I had computer stores in 1979 and wired this frakking things. I hate RS232 with a passion that will never end I suppose.

The funny thing is you have to have a USB adapter to attach to the RS232 cable. And having been in technology all my life I've never even heard of a USB cable hanging up somehow. Never happened to me at all. What actually happens?

--- In Gemini-II@..., "Keith" <keith.myers@> wrote:

Here Here! I agree completely with Rainer. There is nothing as stable and trouble-free as good 'ole RS-232 or RS-422. The amount of bandwidth needed for communicating with positional or slow devices is very adequately met by serial communication. USB is complete overkill and causes way too many headaches. USB is a kludge. Anyone remember Bill Gates CES demo of the first appearance of USB? What a laughing stock he was made to look.


May RS-232 live forever!

Keith

--- In Gemini-II@..., "Rainer" <rsbfoto@> wrote:

Hi Dave,

" ... but when will this antiquated practice of 9 pin serial finally come to an end ... "

I hope never ! as a RS232 serial connection never hangs up and the Sh...y USB, be it whatever version, if it hangs up you need to unplug the cable and reset it in that way ... If you have a solution for unplugging a USB cable remotely I would be very thankful :-)

I wish you many USB hang ups :-) and you will pray for having an Antique RS232 serial connector somewhere ...

Happy unpluggings :-)

regards Rainer

1 - 8 of 8