WiFi LinuxCNC

 I have battled a little with my LinuxCNC PC somewhat randomly changing its IP address, even without a reboot.  This is odd because DHCP usually reserves the association for some period of time based on the original DHCP request.  (This is my memory of porting a DHCP server at a startup for which I worked.)

I finally broke down and fiddled with /etc/network/interfaces/ to tell it to go static.  No more fiddling with IP address in FileZilla!

Also, LinuxCNC is notoriously picky about WiFi cards and there is no  practical way to run Ethernet to the shop.  I finally found a 1300AC WiFi card that is plug'n'play a while back.  The data rate has never been impressive.  I suspect because line of sight from tower to router goes through the refrigerator.  I typically have been seeing 5.5 Mbps.  This is adequate for my needs but it seems absurdly slow.  So this afternoon, I thought, "What if I move it from the front of tower to the USB port at the rear.?  11 Mbps.  The WiFi came with an extension USB cable.  Using that and raising in the air gave a slight hint that performance might improve a few feet higher or east of the fridge.  I think I have a male USB-A to USB-A cable here somewhere.  If it a few feet longer, I may try it.

My cellphone in the same location gives 90 Mbps.  This WiFi adapter may just be a bit limited.