#1  
Old 17-02-2024, 01:46 AM
pmrid's Avatar
pmrid (Peter)
Ageing badly.

pmrid is offline
 
Join Date: May 2008
Location: Cloudy, light-polluted Bribie Is.
Posts: 3,757
EQMOD cables testing

I have an HEQ5 mount I use occasionally with an ASIair Mini device. But for some reason, the ASIair cannot or will not connect to the mount. I have used the same cable with a ASIair Plus successfully so I am tempted to think either the Mini is defective or the cable is wonky. As a starting point, can anyone suggest a way to test the cable?
Reply With Quote
  #2  
Old 17-02-2024, 08:26 AM
Startrek (Martin)
Registered User

Startrek is offline
 
Join Date: Dec 2017
Location: Sydney and South Coast NSW
Posts: 6,666
Try connecting EQMOD to mount via EQMOD Toolbox and not via ASIair but first verify that cable is connecting to mount by going into Device Manager and checking Serial USB com port ( eg: Com 5 or Com 7 etc… )

Connect your mount to your laptop with your nominated EQ Direct cable (max length 5m )
Switch on your mount and laptop and open Device Manager in laptop and verify Com port
connection to mount via a serial USB Com port. ( eg COM 3 , COM 5 etc.. ) Unplug cable from mount
end to check connection , USB Serial Com ## should disappear. plug it back in and it should
reappear.Still in Device Manager select Ports then double click your USB serial Com port and Com
port Properties will appear. Go into port settings and just change Bits per second to 9600 which is Baud rate ( this is very important !!! ) Press ok and close Device Manager. Your serial port connection is now ready to communicate with EQMOD. Now register and check the EQMOD Ascom Set Up Window and make sure all your settings are
correct. This can be found on your computer via Start Up and Programs. Press EQMOD folder then EQASCOM folder , in the drop down select “Toolbox”. The small EQASCOM Toolbox will appear.
Press the “Register” button , an error will come up, just press Ok, then Success Ok. Now in the
Toolbox press “Driver Set Up” this will launch the EQMOD Ascom Set Up window.

Note: Some EQ Direct cables like Shoestring Astronomy brand require a Special FTDI driver for the USB chip in the cable
Important Download if using Shoestring Astronomy EQMOD cable
Shoestring Astronomy Virtual Com Port ( VCP driver for FTDI chip ) for your ( Shoestring Astronomy) USB EQ Direct cable ( www.shoestringastronomy.com ) This is the most important item and allows your Laptop to find and connect to the mount through the Shoestring EQ
cable .Hopefully your operating system is on the list for the VCP driver ( Go to The Shoestring Astronomy Store then “Downloads” then “Software” and then select “Virtual Com Port Drivers for
USB2EQ6 and USB2EQ5” ( VCP Driver for FTDI devices ) this opens the FTDI page. Go to the Supported VCP Drivers table. If your using a computer with Windows 7 , 8 , 10 or 11 then choose the first section in the table under Windows* go across to the RHS under Comments and this is where
you find out how to download the FTDI driver ( you can use the “set up executable” or just read the installation notes and it shows you how to download and set up for Windows )
NB: You can use other brands or manufacturers EQ Direct Cables but be cautious as some have inherent driver problems etc.. Shoestring Astronomy worked directly with EQMOD to develop the correct cable for the EQ Direct method of connection between mount and Laptop.

Also make sure you have the latest Ascom driver installed together with the Microsoft.Net Framework 3.5.1

The problem could also be in your ASIair settings as well ???? Hence to try connecting to EQMOD autonomously

After trying all the above and you still can’t connect , replace the cable

Hope others can chime in on the ASIair side of things as I don’t use them

Hope the above helps

Martin
Reply With Quote
  #3  
Old 18-02-2024, 03:50 AM
pmrid's Avatar
pmrid (Peter)
Ageing badly.

pmrid is offline
 
Join Date: May 2008
Location: Cloudy, light-polluted Bribie Is.
Posts: 3,757
Hi Martin and thanl you. It never ceases to surprise me that you can find the time to respond so comprehensively to my inane questions. You're a chanp!
Reply With Quote
  #4  
Old 18-02-2024, 07:56 AM
JA
.....

JA is offline
 
Join Date: Oct 2016
Location: Melbourne, Australia
Posts: 3,052
Quote:
Originally Posted by pmrid View Post
As a starting point, can anyone suggest a way to test the cable?
If you can get the correct circuit diagram/pin outs for the cable, then using a multimeter you can test for continuity in each of the conductors in the cable.
Best
JA

Edit...
a cable circuit/pin out diagram is shown half way down the following page along with a how to make your own cable instruction... (Hopefully it's the right type/correct)
https://www.williamliphotos.com/diy-eqdir

Last edited by JA; 18-02-2024 at 08:06 AM.
Reply With Quote
  #5  
Old 18-02-2024, 09:24 AM
Startrek (Martin)
Registered User

Startrek is offline
 
Join Date: Dec 2017
Location: Sydney and South Coast NSW
Posts: 6,666
A pin to pin continuity conductor test won’t prove that the FTDI or Prolific chipset ( USB driver ) will allow laptop to talk to mount.
I’ve had a cable which belled out ok and still didn’t talk to the mount.
Only my experience with these things

Cheers
Martin
Reply With Quote
  #6  
Old 18-02-2024, 12:15 PM
JA
.....

JA is offline
 
Join Date: Oct 2016
Location: Melbourne, Australia
Posts: 3,052
Quote:
Originally Posted by Startrek View Post
A pin to pin continuity conductor test won’t prove that the FTDI or Prolific chipset ( USB driver ) will allow laptop to talk to mount.
I’ve had a cable which belled out ok and still didn’t talk to the mount.
Only my experience with these things

Cheers
Martin
Hi Martin,

Peter asked and I was responding specifically to a way to test the cable. There are many factors that of course could contribute to a lack of communication / non-functionality of the mount, BUT: Provided the cable is of an appropriate impedance and doesn't include any active electronics, such as in the diagram in the article I posted, pin to pin continuity testing, tests the cable functionality completely, but to be even more thorough could include a wiggle /squeeze on the cable whilst testing to check for any internal breaks perhaps.

Beyond the cable of course there may be other issues at the mating connectors and beyond, both hardware/firmware and software related.

Best
JA
Reply With Quote
  #7  
Old 18-02-2024, 01:09 PM
Startrek (Martin)
Registered User

Startrek is offline
 
Join Date: Dec 2017
Location: Sydney and South Coast NSW
Posts: 6,666
Quote:
Originally Posted by JA View Post
Hi Martin,

Peter asked and I was responding specifically to a way to test the cable. There are many factors that of course could contribute to a lack of communication / non-functionality of the mount, BUT: Provided the cable is of an appropriate impedance and doesn't include any active electronics, such as in the diagram in the article I posted, pin to pin continuity testing, tests the cable functionality completely, but to be even more thorough could include a wiggle /squeeze on the cable whilst testing to check for any internal breaks perhaps.

Beyond the cable of course there may be other issues at the mating connectors and beyond, both hardware/firmware and software related.

Best
JA

Yep agree totally
M.
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 06:11 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement