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Fred
 Fred
(@fred-7)
Member
lost IP address

C'est la deuxième fois que cela m'arrive. J'ai perdu l'adresse IP d'une imprimante et les 6 autres ont toujours leur adresse IP

Qu'est-ce qui peut causer ce problème?

Can I send you a file to help?

Posted : 28/02/2022 1:39 pm
Tojik
(@tojik)
Member Moderator
RE: lost IP address

Hi, yes, a log would be appreciated, but I think it must have been the pi just disconnecting due to poor signal. The pi has small antennas and the printers are noisy, so the signal strength tends to matter much more than on laptops.

Posted : 28/02/2022 3:30 pm
Shawnvanlan
(@shawnvanlan)
Member
RE: lost IP address

Did you set a Static IP address for PrusaLink?  As with any WiFi device it seems to make connections a lot more stable. 

Posted : 28/02/2022 5:51 pm
Fred
 Fred
(@fred-7)
Member
Topic starter answered:
RE: lost IP address

where can I find the logs

Posted : 02/03/2022 8:46 am
Fred
 Fred
(@fred-7)
Member
Topic starter answered:
RE: lost IP address

yes I have fixed IP addresses

Posted : 02/03/2022 8:47 am
Tojik
(@tojik)
Member Moderator
RE: lost IP address

the logs can be gotten from the prusa link web interface under settings. Try finding the ones that start with syslog

Posted : 02/03/2022 9:38 am
Zbigniew Trzepizur
(@zbigniew-trzepizur)
Trusted Member
RE: lost IP address

For me, switching my WiFi Access Point's wireless channel for 2.4 GHz band (from Auto which happened to pick CH11 to manual CH6) seems to have made a world of difference. My Raspberry Pi Zero 2 W went from some ridiculous pings of several seconds down to reasonable < 50 ms. I haven't tried printing anything on the new settings yet (I was getting random "No IP" before) so the jury is still out but I sure do hope to get more stable connection with a difference in RTT like that.

Posted : 11/06/2022 9:03 pm
Tojik
(@tojik)
Member Moderator
RE: lost IP address

Another thing I tried addressing. We poll commands from Connect. Which means that each printer is making 4 requests per second when idle. After adding 1+1 together, I made it sleep after a little while. The first command takes longer to get to the printer, but your WiFi doesn't get slammed as hard. Our IT guys really didn't appreciate this either.

Alternatively there are these boards https://www.waveshare.com/eth-usb-hub-hat-b.htm

Thanks to  @zilerd and his post(s) https://forum.prusa3d.com/forum/postid/609065/

I have yet to figure out if there is a right angle RJ45 low profile enough to fit. So far I saw these ones on ali https://m.aliexpress.com/item/4001106372182.html

Oh and he just mentioned, we might have accidentally broken the functionality of those somehoe, so I need to test that also

 

Posted : 12/06/2022 7:33 am
Zbigniew Trzepizur
(@zbigniew-trzepizur)
Trusted Member
RE: lost IP address
Posted by: @tojik

Alternatively there are these boards https://www.waveshare.com/eth-usb-hub-hat-b.htm

Thanks to  @zilerd and his post(s) https://forum.prusa3d.com/forum/postid/609065/

They seem to be using pogo pins to USB test points - that's fascinating. Never seen anything like that in a production, end-user device. Very clever.

Posted : 12/06/2022 9:01 am
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