Hi Folks.. I just switch to gSender from jsCNC nd at the same time installed limit switches. Iāve enabled homing, soft & hard limits. and while I really like gSender so far I have had some issues. Some background, the Longmill is my second CNC and Iāve been using a CNC for about 3 years although my use goes in spurts Iām running this on Windows 10 and Iām running longboard ver 1.3 and flashed to the latest firmware using gSender.. Iām running gSender 1.0.2..
So my issues are I am getting random stops/hangs, sometimes I get an invalid feed rate at line x but if I rerun the gcode it will process that line no issue and sometimes it just hangs/stops with no indication in the console other than āreset to continueā as to why. These are all short (less than 60 min) carves but they are 3d shapes.
Iāve included a couple of screen shots but not sure they are of much help..
Any ideas.. Iāve turned off hard and soft limits and that MAY have resolved the issue but I have not done enough carves to be sure but regardless I would like to have those enabled.
Kerry, I ended up disabling hard and soft limits, too, after I got a false limit reached error during a carve. I havenāt had any issues since, but I never saw the invalid feed rate error.
I have an older Longboard so added the provided caps. They donāt seem to be providing enough noise filtering.
I really donāt see what hard & soft limits should have to do with this but it does seem to have worked. I would however like to have hem enabled so it would be nice to sort this outā¦
Weāve tried a couple approaches to fixing these strange hangs recently and itās hard to tell if weāve finally caught them or not. Have any of you guys still been seeing this sort of behaviour? Is there a pattern that you notice to the behaviour?
@chrismakesstuff , Iāve had limits turned off since shortly after I added the limit/homing switches. A couple months ago I added pull-ups to the caps (I have an older controller) hoping that would help, but it didnāt so I turned limits back off again. I wasnāt doing anything special for any of the errors.
@chrismakesstuff , I used 20K because it was in parallel with the internal resistors and I didnāt want to lower the combined resistance too much. I do have some 10K. I could try those, if you like.
@chrismakesstuff , I found that all I had to do to recreated āAlarm 1ā was to set the speed to rapid and run back and forth on the X axis. In less that 10 trip back and forth the machine would get a hard limit error. So, I changed the 20K resistors to 10K and tried again. It still failed. Then I tried unplugging the limit switches from the controller (at the controller). I ended up with all of them unplugged and it still failed. Not quite what I was expecting. I was thinking that noise was riding in on one or more of the limit switch cables. I guess not. This would seem to indicate that if it is a noise problem, the noise is from another source and is coupling on the controller board.
Hmmm, in that case Iām not exactly sure what might be going on here. Iām not even sure if itās a gSender issue or some other issue with noise on the machine itself.
