GQ Electronics Technical Support Forum Active Users: / Visits Today:
Highest Active Users:
GQ Electronics Technical Support Forum
Home | Profile | Register | Active Topics | Members | Search | FAQ
Username:
Password:
Save Password
Forgot your Password?

 All Forums
 GQ Electronics Forums
 2.GQ Geiger Muller Counter
 GMC-500+ - Won't connect to WiFi anymore
 New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

Hugo

United Kingdom
12 Posts

Posted - 03/28/2022 :  07:23:46  Show Profile  Reply with Quote
As of today my GMC-500+ refuses to connect to my WiFi and I'm at a loss as to why. I've tried to connect to either of local access point or main router with equal lack of success. Using the AT+CWLAP command via the GMC DataViewer terminal I can see my WiFi networks - but no luck connecting. Sometimes I get the message 'WiFi Module Error' and sometimes I just get 'Failed' message.

I've reset the WiFi module and even factory reset the GMC 500+ - I've spent hours on this now with no success - please help!
Reply #1

EmfDev

1693 Posts

Posted - 03/28/2022 :  09:49:20  Show Profile  Reply with Quote
Hi Hugo, if WiFi Module Error, you need to restart the device by powering off completely.

If Failed, check if the parameters are correct, mainly SSID and password. They are case sensitive.
Go to Top of Page
Reply #2

Hugo

United Kingdom
12 Posts

Posted - 03/28/2022 :  11:41:40  Show Profile  Reply with Quote
Thanks for response. All the parameters are correct and haven't changed from when it was connecting. I've used AT commands and have got the WiFi module to establish a connection but when using the WiFi on/off menu the GMC500+ it simply won't connect. The commands I used direct to the module were:

- AT+CWQAP (make sure disconnected)
- AT+CWJAP_DEF ="BT-JRA5XH","<password>" (connect)
- AT+CIPSTA_CUR? (to get IP address)


Edited by - Hugo on 03/28/2022 12:54:22
Go to Top of Page
Reply #3

Hugo

United Kingdom
12 Posts

Posted - 03/28/2022 :  12:07:53  Show Profile  Reply with Quote
When using the terminal I quite often see some 'noise' characters (see image), I don't know if that indicates a more general problem with the device or it is nothing to be concerned about?


Edited by - Hugo on 03/28/2022 12:10:05
Go to Top of Page
Reply #4

EmfDev

1693 Posts

Posted - 03/28/2022 :  15:01:25  Show Profile  Reply with Quote
That may be the reason why it fails when using the Connect WiFi on the device. But can you try more times until it is connected? Also before trying, can you send this AT+CWMODE=3 if it doesn't work, try AT+CWMODE=1
Go to Top of Page
Reply #5

Hugo

United Kingdom
12 Posts

Posted - 03/29/2022 :  01:01:54  Show Profile  Reply with Quote
quote:
Originally posted by EmfDev

That may be the reason why it fails when using the Connect WiFi on the device. But can you try more times until it is connected? Also before trying, can you send this AT+CWMODE=3 if it doesn't work, try AT+CWMODE=1



The AT+CWMODE=3 seems to have worked - thanks!

Any thoughts on what happened and why I had to make the change? I'm still a bit concerned about that spurious data on the serial connection as well - thoughts?
Go to Top of Page
Reply #6

Hugo

United Kingdom
12 Posts

Posted - 03/29/2022 :  05:16:42  Show Profile  Reply with Quote
Update! It worked ok for about an hour or so but it is now behaving much the same ie failing to connect and send the data to the server, so I think establishing the connection ok after the change was just luck.

I tried again using the AT command and the response is in the image below. It looks to me like there's a hardware issue because the response should be 'OK GOT IP' but as you can see it is quite corrupted.



'Server/Test Connection' produces random success/fail and I get lots of 'WiFi data send failed' messages

Edited by - Hugo on 03/29/2022 05:38:56
Go to Top of Page
Reply #7

ullix

Germany
754 Posts

Posted - 03/29/2022 :  05:56:27  Show Profile  Reply with Quote
Almost looks like a comport mis-configuration. Just because it is so strange - can you verify on both the counter and the computer side?

GeigerLog has a GLsermon.py script (see gtools directory) with a mode specific for GMC counter. As last resort perhaps worth a try?
Go to Top of Page
Reply #8

Hugo

United Kingdom
12 Posts

Posted - 03/29/2022 :  08:56:17  Show Profile  Reply with Quote
quote:
Originally posted by ullix

Almost looks like a comport mis-configuration. Just because it is so strange - can you verify on both the counter and the computer side?

GeigerLog has a GLsermon.py script (see gtools directory) with a mode specific for GMC counter. As last resort perhaps worth a try?



Thanks for suggestion but I don't think it is a com port mis-config all the GQ commands seem to work ok (I can run GETVER as many times as you like without seeing any corrupt response), I think it's the pass through/from the WiFi module that's the issue?


Edited by - Hugo on 03/29/2022 08:57:20
Go to Top of Page
Reply #9

EmfDev

1693 Posts

Posted - 03/29/2022 :  10:16:04  Show Profile  Reply with Quote
Have you tried AT+RST? If you soldering iron, you can check if the soldering is still ok. It may be just noise from surrounding components. And when did you buy this device?
Go to Top of Page
Reply #10

Hugo

United Kingdom
12 Posts

Posted - 03/29/2022 :  12:34:57  Show Profile  Reply with Quote
quote:
Originally posted by EmfDev

Have you tried AT+RST? If you soldering iron, you can check if the soldering is still ok. It may be just noise from surrounding components. And when did you buy this device?



I purchased it this year on Feb 26th and it was delivered March 2nd.

As an update, I took the battery out and opened the case to have a look at solder joints etc. Didn't do anything but put the case back on and put the battery back in. Now it is working fine and I don't see any corruption on the serial connection!!!!! Sounds like a dry joint or something to me!?!?!






Go to Top of Page
Reply #11

EmfDev

1693 Posts

Posted - 03/30/2022 :  09:54:10  Show Profile  Reply with Quote
Hopefully it wont last for only 1 hour and will be permanent.
Go to Top of Page
Reply #12

Hugo

United Kingdom
12 Posts

Posted - 03/31/2022 :  01:45:44  Show Profile  Reply with Quote
quote:
Originally posted by EmfDev

Hopefully it wont last for only 1 hour and will be permanent.



It's been solid for about 36hours now
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
GQ Electronics Technical Support Forum © Copyright since 2011 Go To Top Of Page
Generated in 0.17 sec. Snitz's Forums 2000