I am new to this group. Presently also a member of the Losmandy Users and Gemini-II user Groups.
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I have a 2003 vintage Losmandy G11 equatorial mount which I am thinking of upgrading. It has the 492 Digital Drive non goto.
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Best regards
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Eugene
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Re: Losmandy GM8 Gemini 1 and ASIAIR+
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The FTDI I/O chip is the gold standard which is why there are so many fake FTDI chips in the market stream and why I recommend buying a converter from a supplier that only uses authentic FTDI chips not FTDI spec or illegal clone copies.? There was a huge issue years ago where Chinese cloners made a zillion copies of the FTDI USB chips so FTDI altered their chips code to make cloning them harder.? This made about a zillion people unhappy when their cloned FTDI devices failed to work.? This issue may be history but there are still about half a zillion of these fake converters out there in the marketplace.? Buy from a known good maker and seller that uses authentic chips.??
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Chip Louie Chief Daydreamer Imagination Hardware?
? ?Astrospheric - South Pasadena?
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Re: Losmandy GM8 Gemini 1 and ASIAIR+
Fully agree on using FTDI chipset -- historically these have been more compatible and stable converters for use with Gemini.
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Regards,
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? ? -Paul
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On Tue, Dec 10, 2024 at 08:29 AM, Brendan wrote:
Digikey has a good range of adapter USB to RS232 like:
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uses FT232L chipset (FTDI) $18
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FTDI
UT232R-200 another FTDI DEVICE $34
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My favourite another FTDI Chip 10 $21
https://www.digikey.com.au/en/products/detail/ftdi-future-technology-devices-international-ltd/UC232R-10/1836392
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Digikey gives free delivery if order over $60 AUD.?
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Here are dons more but I do like FTDI chipset converters. Their compatibility unmatched. ?
Below is Digikey line up of these RS232 To USB.?
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Mouser also sell them. ? Buy from known sources as many converter chips are cheap copies. ?
This shows G1 and G2 Rs232 cable wiring. ?They are not the same.?
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Also you haven¡¯t yet checked that your G1 RS232 IC is working. ?I¡¯d suspect that before replacing cables. ? See Gemini 1 FAQs?
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In cases like this it¡¯s best to try run the Gemini using your cables and Gemini ASCOM to ensure the Gemini RS232 IC is ok. ? ?They have been known to go bad. ? It just simplifies it all. ?Trying to fix a bad IC by replacing cables does nothing but make confusion.?
Try this, G1/Gemini ?ASCOM connection via USB/RS232 and get back to us if it works. ?We can advise from there. ??
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Cheers
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Brendan
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Re: Losmandy GM8 Gemini 1 and ASIAIR+
Digikey has a good range of adapter USB to RS232 like:
?
uses FT232L chipset (FTDI) $18
?
FTDI
UT232R-200 another FTDI DEVICE $34
?
?
My favourite another FTDI Chip 10 $21
https://www.digikey.com.au/en/products/detail/ftdi-future-technology-devices-international-ltd/UC232R-10/1836392
?
Digikey gives free delivery if order over $60 AUD.?
?
Here are dons more but I do like FTDI chipset converters. Their compatibility unmatched. ?
Below is Digikey line up of these RS232 To USB.?
?
Mouser also sell them. ? Buy from known sources as many converter chips are cheap copies. ?
This shows G1 and G2 Rs232 cable wiring. ?They are not the same.?
?
Also you haven¡¯t yet checked that your G1 RS232 IC is working. ?I¡¯d suspect that before replacing cables. ? See Gemini 1 FAQs?
?
In cases like this it¡¯s best to try run the Gemini using your cables and Gemini ASCOM to ensure the Gemini RS232 IC is ok. ? ?They have been known to go bad. ? It just simplifies it all. ?Trying to fix a bad IC by replacing cables does nothing but make confusion.?
Try this, G1/Gemini ?ASCOM connection via USB/RS232 and get back to us if it works. ?We can advise from there. ??
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Cheers
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--
Brendan
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Re: Losmandy GM8 Gemini 1 and ASIAIR+
On Sun, Dec 8, 2024 at 01:40 PM, Will wrote:
Fabien, inexpensive USB to RS232 adaptor cables are on Amazon.
-Will
Thank for the explanation. I learnt a new knowledge ;-)
On Sun, Dec 8, 2024 at 01:50 AM, Ma Ol wrote:
I think all ZWO products are limited to be used with ZWO products only.
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This is incorrect.? ASIAIR has always worked with non ZWO mounts even before there were ZWO mounts using either Ethernet or USB I/O ports.?
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--
Chip Louie Chief Daydreamer Imagination Hardware?
? ?Astrospheric - South Pasadena?
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Half the time these inexpensive USB converters are the problem.? This is why you want to buy one that is known to work with the Gemini 1.? Google ATEN UC232A, these are known to work correctly when cabled with the Losmandy Gemini 1 RJ connector to DB9 RS233 connector.? Not the cheapest but a known to work solution.?
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Chip Louie Chief Daydreamer Imagination Hardware?
? ?Astrospheric - South Pasadena?
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Re: Losmandy GM8 Gemini 1 and ASIAIR+
toggle quoted message
Show quoted text
Fabien, inexpensive USB to RS232 adaptor cables are on Amazon. -Will
Thank for the explanation. I learnt a new knowledge ;-)
On Sun, Dec 8, 2024 at 01:50 AM, Ma Ol wrote:
I think all ZWO products are limited to be used with ZWO products only.
?
This is incorrect.? ASIAIR has always worked with non ZWO mounts even before there were ZWO mounts using either Ethernet or USB I/O ports.?
?
--
Chip Louie Chief Daydreamer Imagination Hardware?
? ?Astrospheric - South Pasadena?
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Re: Losmandy GM8 Gemini 1 and ASIAIR+
Fabien, inexpensive USB to RS232 adaptor cables are on Amazon. -Will
Thank for the explanation. I learnt a new knowledge ;-)
On Sun, Dec 8, 2024 at 01:50 AM, Ma Ol wrote:
I think all ZWO products are limited to be used with ZWO products only.
?
This is incorrect.? ASIAIR has always worked with non ZWO mounts even before there were ZWO mounts using either Ethernet or USB I/O ports.?
?
--
Chip Louie Chief Daydreamer Imagination Hardware?
? ?Astrospheric - South Pasadena?
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Re: Losmandy GM8 Gemini 1 and ASIAIR+
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I learn something new every few minutes, I have a memory like a goldfish LOL.?
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Chip Louie Chief Daydreamer Imagination Hardware?
? ?Astrospheric - South Pasadena?
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Re: Losmandy GM8 Gemini 1 and ASIAIR+
Thank for the explanation. I learnt a new knowledge ;-)
On Sun, Dec 8, 2024 at 01:50 AM, Ma Ol wrote:
I think all ZWO products are limited to be used with ZWO products only.
?
This is incorrect.? ASIAIR has always worked with non ZWO mounts even before there were ZWO mounts using either Ethernet or USB I/O ports.?
?
--
Chip Louie Chief Daydreamer Imagination Hardware?
? ?Astrospheric - South Pasadena?
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Re: Losmandy GM8 Gemini 1 and ASIAIR+
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As Brendan suggests it is best to establish that the Gemini 1 RS233 port is working by connecting to a PC via USB to RS233 converter cable before trying to connect to anything else. Connecting to a PC is a lot easier because this is a well understood process and will confirm that the Gemini-1's RS233 port works.?
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Until you establish the fact that you have a working USB connection with a PC using a known good USB to RS232 converter and cable you will be banging you head and ours against a wall without any significant hope of success.??
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--
Chip Louie Chief Daydreamer Imagination Hardware?
? ?Astrospheric - South Pasadena?
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Re: Losmandy GM8 Gemini 1 and ASIAIR+
On Sun, Dec 8, 2024 at 01:50 AM, Ma Ol wrote:
I think all ZWO products are limited to be used with ZWO products only.
?
This is incorrect.? ASIAIR has always worked with non ZWO mounts even before there were ZWO mounts using either Ethernet or USB I/O ports.?
?
--
Chip Louie Chief Daydreamer Imagination Hardware?
? ?Astrospheric - South Pasadena?
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Re: Losmandy GM8 Gemini 1 and ASIAIR+
I think all ZWO products are limited to be used with ZWO products only.
Hi,
I try to connect GM8 on a ASIAIR, not on a PC.
Le dim. 8 d¨¦c. 2024, 07:54, Ma Ol via <manu.oliva.6e23= [email protected]> a ¨¦crit?: Did you download the corresponding driver? Look at the screenshot.
Hi,
I've a Losmandy GM8 Gemini 1 and an ASIAIR+.
I can't connect GM8 to ASIAIR
- with he the original cable serial/RJ9 with another serial/usb
- with GeminiFI module Wifi
- with the Losmandy cable USB to RJ9 (
?
How did you do it ??
Thank you in advance !
?
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Re: Losmandy GM8 Gemini 1 and ASIAIR+
Hi,
I try to connect GM8 on a ASIAIR, not on a PC.
Le dim. 8 d¨¦c. 2024, 07:54, Ma Ol via <manu.oliva.6e23= [email protected]> a ¨¦crit?: Did you download the corresponding driver? Look at the screenshot.
Hi,
I've a Losmandy GM8 Gemini 1 and an ASIAIR+.
I can't connect GM8 to ASIAIR
- with he the original cable serial/RJ9 with another serial/usb
- with GeminiFI module Wifi
- with the Losmandy cable USB to RJ9 (
?
How did you do it ??
Thank you in advance !
?
|
Re: Losmandy GM8 Gemini 1 and ASIAIR+
Did you download the corresponding driver? Look at the screenshot.
Hi,
I've a Losmandy GM8 Gemini 1 and an ASIAIR+.
I can't connect GM8 to ASIAIR
- with he the original cable serial/RJ9 with another serial/usb
- with GeminiFI module Wifi
- with the Losmandy cable USB to RJ9 (
?
How did you do it ??
Thank you in advance !
?
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Re: Losmandy GM8 Gemini 1 and ASIAIR+
Fabien
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take a step back ¡¡use Gemini ASCOM try connect using it and Gemini.?
/g/Gemini_ASCOM_Driver
if doesn¡¯t work ¡..you probably have a bad Gemini Rs232 IC. ?
if it does¡..well I¡¯m not sure get back on trying Gemini ASCOM first. ?It should show up in com port config under device manager
cheers
?
--
Brendan
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Losmandy GM8 Gemini 1 and ASIAIR+
Hi,
I've a Losmandy GM8 Gemini 1 and an ASIAIR+.
I can't connect GM8 to ASIAIR
- with he the original cable serial/RJ9 with another serial/usb
- with GeminiFI module Wifi
- with the Losmandy cable USB to RJ9 (
?
How did you do it ??
Thank you in advance !
?
|
On Thu, Dec 5, 2024 at 05:20 PM, Chris Mobley wrote:
I am unable to move my stepper motors with my hand controller.
I have made sure that pec is turned off.
I purchased my G-11 in 2005.
?How to I fix this?
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What is your configuration? If you have stepper motors then you probably don¡¯t have Gemini. If you do have Gemini, which one, Gemini-1 or 2?
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I am unable to move my stepper motors with my hand controller.
I have made sure that pec is turned off.
I purchased my G-11 in 2005.
?How to I fix this?
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Re: RTC issue with Gemini 1
Thanks so much, Brendan¡ªjust what I was looking for. I'll carefully go through your suggestions and take a look at D1 as well. I'll let you know once I make more progress with the troubleshooting.
Franck
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Re: RTC issue with Gemini 1
Annnd I should have said check battery voltage is getting to the SRAM/RTC thru D1.?
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Maybe check diode D1 with ohmmeter on diode function. ? Check it switches ok to around 4.9V dc ~minimum ?at SRAM/RTC at same point mentioned above when system powered on!
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Sorry just brain storming ¡.my thoughts are all over the place line a dogs back leg!
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cheers
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Brendan
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Chip Louie
Paul Kanevsky
Ma Ol
Chris Mobley
@fvitale