I have been experiencing this problem since the beta started, I have been struggling to reproduce it.
but Its happening more and more, so I am going to report it.
I DO NOT believe this is a gSender 6.6 issue, it could be anything. including a hardware fault.
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Tonight I surfaced 3 boards of 12" x 12" on both sides.
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all three boards were surfaced within 1 minute of each other as they were identical in size,
1 - ALL USB devices āAllow the computer to turn off this device to turn off powerā is set to UNCHECKED
2 - using Surfacing gadget.
350 length, 360 width, bit diameter 60, step over 70%, Feedrate 3000
(everything else is set to default)
3 - clicked Generate Code
4 - Clicked on Run in main visualizer
5 - mount first board in quick disconnect clamp. (setting X ,Y, Z)
6 - Click Start Allow program to run (maybe a 1 minute execution time)
7 - unmount the board, and flip over and surface the second side.
Complete steps 5,6 and 7 3 times.
8 - move the head as far way as possible for Safety.
in my case, after completion of the 3rd board, the keyboard and pendant controls on the UI became un-responsive.
9 - I Closed the gSender UI
10 - Launced a new fresh copy of gSender
11 - click on the Connect to Machine, and selected the active come port.
12 - I was able to click on the Arrows, however they only moved every 20 seconds or so (as seen in the video)
all of the above steps were executed consecutively, with no longer then 30 seconds between each steps.
these are the most repeatable steps I have been able to execise.
Note in the video
Upper left of the screen is a green Check box and beside it, it says Connected.
Upper right side of the screen says Disconnected.
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Around 16 seconds into the video, you can see me clicking on the keyboard. and no response from the head.
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around 41 seconds the head moves a tiny little bit.
I can exit the client, and restart it, and nothing happens.
If however, I reboot the machine and re-try everything works again.
video:

