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Re: Tracking Past the Meridian with a GE mount

Dan Gray
 

I understand the problem, I tried to fix it, I did fix a bug, so there aren't any bugs, but It's deep down in the code, and it's hard for even the author (me) to understand, and I promise I'll get to it.
I would suggest turn on the "Az RA No Wrap" and use equatorial until I can get to it.
Dan


On Mon, Nov 29, 2021 at 3:39 AM SIMON via groups.io <simon.dawes=btinternet.com@groups.io> wrote:
Well I decided to ponder on this over night, as a GEM user for 30 years this doesn't operate as I'd expect, previous mounts would flip on goto and would merrily pile into the pier when you past the meridian at certain declinations (if you turned off the meridian flip)  so on balance it doesn't feel like the driver is working as an experienced user of GEM mounts would expect - with or without an observatory.
 


Re: Custom Cables. Questions - Losmandy G11 Sitech Servo I

Dan Gray
 

That's 6 hours difference, it sounds like you're using nina, which uses the ascom function that reads the clock.  Is your time zone different from UTC by 6 hours?
The ascom function is supposed to return UTC, but there was a mistake in even recent versions where we put out the local time.
If that's the case, upgrade to this version, I recently fixed it.

Dan


On Mon, Nov 29, 2021 at 7:22 PM Don W <westergren@...> wrote:
Hi Moonfrost,

There is no setting of the clock I know of in Sitech.  However you can look at Features/Offset Track Rates to see how much difference there is between SiTech and your PC clock - it should show only miliseconds difference.

Don W


Re: win 7 to win 10 transition

Dan Gray
 

Chris,
when you plug in a usb to serial converter OR connect a servoII or force1 to your windows computer, it should list them in the device manager.
If it doesn't, then maybe you need to install the manufacturers driver.
Our servoII and ForceOne use an FTDI chip.
Here's the driver for that.
Dan


On Thu, Dec 2, 2021 at 4:49 AM Don W <westergren@...> wrote:
Hi Chris,

A USB port is not a Comm port.  A USB to Serial Adapter CAN provide a Comm port when plugged into the USB port.  If your laptop doesn't have a comm port, then you must use an adapter.  The adapter can be set to provide any comm port number you like, but adding one will likely be Comm 1.

If you have a SiTech Servo II controller - it has a built-in USB to Serial Adapter which will work with a USB cable to the controller.  but if you are using a SiTech Servo I, then you must have your own adapter plugged into your PC and use a serial cable into the controller.

Don W


Re: win 7 to win 10 transition

Don W
 

Hi Chris,

A USB port is not a Comm port.  A USB to Serial Adapter CAN provide a Comm port when plugged into the USB port.  If your laptop doesn't have a comm port, then you must use an adapter.  The adapter can be set to provide any comm port number you like, but adding one will likely be Comm 1.

If you have a SiTech Servo II controller - it has a built-in USB to Serial Adapter which will work with a USB cable to the controller.  but if you are using a SiTech Servo I, then you must have your own adapter plugged into your PC and use a serial cable into the controller.

Don W


Re: win 7 to win 10 transition

Chris Waters
 

Hello Don,

My new laptop has 3 USB ports, all of which work.

I have tried several approaches suggested on the web for showing the com port numbers, mainly showing hidden devices in device manager then expanding com & lpt, no avail.

I tried adding device:-

  1. Open Device Manager.

  2. Click on Action in the menu bar and select Add legacy hardware > Next.

  3. Select Install the hardware that I manually select from a list (Advanced) and click Next.

  4. Scroll down, then select Ports (COM & LPT) and click Next.

  5. Select the Manufacturer accordingly and click Finish.

again no joy.

Some one somewhere mus use Sitech using a win 10 laptop. How did they get the comport number to give servoconfig and sitech?"


Chris

 

On 20/11/21 10:49 pm, Don W wrote:
Hi Chris,

Make sure your new lap top has a com port - go to "Device Manager" by right clicking the windows logo at bottom left of screen.  Click on "ports" to see the com ports available.  This is the same in Win7 and Win10.

Most laptops now don't have a com port.  So you may need a USB to serial adapter.  The best ones use the FTDI chip.  Device manager can set the com port to any number you want.

Don W


Re: Custom Cables. Questions - Losmandy G11 Sitech Servo I

Don W
 

Hi Moonfrost,

There is no setting of the clock I know of in Sitech.  However you can look at Features/Offset Track Rates to see how much difference there is between SiTech and your PC clock - it should show only miliseconds difference.

Don W


Re: Custom Cables. Questions - Losmandy G11 Sitech Servo I

moofrost@...
 

Also, meant to ask, getting an error saying that the mounts clock differs from the computers clock by 21600 seconds, but I have never seen where we set the clock for the mount. Any ideas?


Re: Custom Cables. Questions - Losmandy G11 Sitech Servo I

moofrost@...
 

Ok, back up and running and all smooth! Sitech took care of me well! I am happy. 

 Now, who was asking about the mount settings? I have a Losmandy G11. I can share settings as needed.


Re: Voltage for Servo Controller II: 12V or 24V?

Dan Hummel
 

Another option would be to use three 6 volt batterys. That gives 18 volts for the servos and you can still tap off 12 volts for other equipment.



Re: Tracking Past the Meridian with a GE mount

SIMON
 

Well I decided to ponder on this over night, as a GEM user for 30 years this doesn't operate as I'd expect, previous mounts would flip on goto and would merrily pile into the pier when you past the meridian at certain declinations (if you turned off the meridian flip)  so on balance it doesn't feel like the driver is working as an experienced user of GEM mounts would expect - with or without an observatory.
 


Re: Tracking Past the Meridian with a GE mount

Russell R
 

Hi SIMON,

I don't know about Mesu, that's why I ask if the observatory was not an issue, would the mount do what you want?
Did Mesu advertise that it would flip if necessary to keep the weights down, but when tracking ignore the meridian?

Best,
Russell R.


Re: Tracking Past the Meridian with a GE mount

SIMON
 

Would it be fair to say that if not for the observatory, the MESU gem mount on a dog leg or bent knee pier would do flip less goto's and tracking without incident, over and under pole?
No, this would not be fair, because these mounts are designed for use with an observatory, that would be like saying that the optics on a scope are only poor because you chose to look through it.


Re: Voltage for Servo Controller II: 12V or 24V?

Mark Volle
 

I don’t know if it brought advantages but I chose (because they were available surplus) 24vdc servo motors… so I went with a dc-dc converter and still run the rig from a nominal 12v source. The converter has a wide input voltage range (9-18) and always produces exactly 24 out- seems to be working fine for several years.


On Nov 28, 2021, at 03:30, Frank <fclbhol@...> wrote:

Commonly available 'in the field' is a 12V power supply. But using two batteries does make 24V possible. Does it have any advantages using 24V instead of 12V for operation of a Servo Controller II (with 24V drive motors instead of 12V drive motors)?


Re: Latest SiTechexe version and its location #question

Alvaro Cruz-Cabrera
 

On 11/28/2021 11:59 AM, Maxime Spano via groups.io wrote:
On the Files section of the group (on the online version) you have a folder named "AAAA SiTech URLs - Latest Current software" with a file containing all the links you will need.
Last Sitech is http://siderealtechnology.com/SiTechSetup095X.exe

Maxime

Maxime,

Thank you.


Alvaro


Re: Latest SiTechexe version and its location #question

Maxime Spano
 

On the Files section of the group (on the online version) you have a folder named "AAAA SiTech URLs - Latest Current software" with a file containing all the links you will need.
Last Sitech is http://siderealtechnology.com/SiTechSetup095X.exe

Maxime


Re: Servo Controller DSTC-1 home capability

Russell R
 

Yes,  Pin 6 of the auxiliary port is supply voltage (5 volts), pin 1 is RA and pin 2 is Dec.  

For a focuser it is pin 1 and rotator is pin 2.  On focuser, this works in only one direction in the software checkbox (On true move xxx), not sure about RA & Dec. 

See page 112 - 116 of setup manual.
Setup manual is under supplemental documentation of SiTech website.

Best,
Russell R.

 


Re: Voltage for Servo Controller II: 12V or 24V?

Don W
 

Hi Frank,

The advantage of 24 vdc operation is more power (more torque o move more mass).  The servos that SiTech sells are actually rated for 19 volts, but are very usable at 12 volts.  Running these (or any 12 volt servos) at 24 volts gives more torque with higher amperage.  The Servo I controller can handle about 2.4 amps while the Servo II can handle over 4 amps.

Running 12 volt servos at 24 volts is possible with SiTech safely since Servo Config can be set to 50% power output to allow 24 volts on 12 volt servos.  You casn run the SiTech 19 volt servos at 24 volts safely setting the power output to 70%.

If your system is working fine at 12 volts there is no big advantage to higher voltage other than much more voltage over the cut-off voltage.  A 12 volt battery system operates between about 14.5 volts and 11.5 volts.  The SiTech controllers stop working below about 11.5 volts.  So running at higher voltages gives you much more cushion over the minimum voltage.

I personally run my SiTech at 15 volts using a voltage booster (about $18 from China) to keep well above the cut-off voltage.

Don W

Don W


Re: Latest SiTechexe version and its location #question

jmgoldba
 

On Sun, Nov 28, 2021 at 09:48 AM, Alvaro Cruz-Cabrera wrote:
latest version of SiTechexe
See the previous post. -Jesse


Servo Controller DSTC-1 home capability

PG Astro Society
 

Does the AUX port on the Servo Controller DSTC-1 support homing the telescope or do I need to upgrade to the Servo Controller II?


Latest SiTechexe version and its location #question

Alvaro Cruz-Cabrera
 

Hello all,

Do you know what is the latest version of SiTechexe and will it be possible to provide a link to its location?

Thank you.

Alvaro

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