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I also use DeskProto, and it's impossible to configure it the way you want. One axis, either X or Y, is always static above the rotation axis, and in that case, you won't be able to create undercuts.

I recently created my own program that could move in both X and Y simultaneously, but so far I haven't succeeded (with a helper, of course). One cool thing I managed to achieve is variable milling density, depending on the slope of the milled slope, so that on flat sections, the milling isn't too dense, but on steep slopes, it's not too sparse. I haven't seen this in other programs, although I haven't seen everything. The program works well, but it won't create undercuts. Maybe someday I'll resume working on true four-axis machining.

Sind die servos die step/dir oder analog eingang?
Wen step/dir dan Mesa 7i95T ist die beste losung und die infachste zum werbinden, aber schwer zu finden...
Gluck, es gibt beim Welecctron im Deutschland
www.welectron.com/Mesa-Electronics-7i95T...-Ethernet-Controller
Fohr die analog, dan die 7i97T ist die selbe wie oben mit analog ausgange stat step/dir und 6 encoder eingange.

Ja bezüglich der mesa karte, wie ist das mit Latenzen? Welche würdest du empfehlen für 5achsen servos mit encodern?

Dear PCW,
1.) Ok, understood. Since I connected 3 boards (2x 7i84, 1x 7i87) I should thus see only 3 SSerial. I was confused as the pins from one of the 7i84 connected to SSerial position 4 on the 7i85 is visible under this name: "sserial device at channel 6: 7I84 (unit 0x1800C0A7)" (string taken from --sserial command using mesaflash).
2) Yes I read this also somewhere else on the forum and made a new machine configuration in pncconf using this option. If I look in the hal file made afterward I indeed see a modified config string in loadrt hm2_eth:  'sserial_port_0=0000000x' and the number of encoders increased. However, unfortunately the other 7i84 and the 7i87 are stil not visible (these are connected via other SSerial channels on the 7i85 other than the one numbered 4 in the manual.
3) This evening I wired an encoder and checked it on all the 4 available enc positions (0, 1, 2, 3). I do see the steps increase/decrease in the watch window of halconfig. The signal pin names I look at are: hm2_7i76e.0.encoder.00.count up to hm2_7i76e.0.encoder.05.count. The enc. 0 (identifier from MESA manual image) corresponds to ....00.count and enc 4 to ....03.count. All seem to work nicely (cool to see this work!)
4) Off course I would appreciate this a lot. I also looked at the naming of a digital input from one of the 7i84 when connected via SSerial 4 (MESA manual image) on the 7i85 and this shows as : hm2_7i76e.0.7i84.0.6.input-00 and so on. These digital pins also work in this configuration Again I don't understand where the 6 comes from. In case I connect the same board to any of the other SSerial positions on the 7i85 than they don't show up at all.

To add to Todd's list:
-most often and by far the main reason such transformers fail is incorrect wiring, and no i do not mean messing the 3 wire plus ground wiring, i mean the input wiring on such transformers, reason being they all have multiple input voltages that can and should be set by moving metal bars on certain screw posts for certain voltages, giving two failure options:
1. incorrect voltage selection set - when set lower than actual voltage causes higher current draw and subsequent heat, so failure is slow and usually ignored until to late
2. incorrect windings set with the metal bars causing huge current draw and distinct buzzing noise from the transformer, leading to overheating and burning of the windings in a short time.
The thing is, in both cases the machine works, and due to the noises all machines make drowns the transformer noise, leading to failed transformer noticed only when it is to late to do anything about it.
-
Personally from experience, that is the first thing i check on any machine with input transformer, seen to many go to waste as local "experts" will never learn that we do not have 3x220V here, we have 3x380V here, only when using neutral we have 220V. It is sickening the amount of transformers and spindles/VFD and servo motors/drives i have seen burned here because of that.

Ich kan nicht uber die EtherCat garnicht sagen, aber fuhr Mesa hab ich uber 20 machinen umgerustet, und nie ein fehler gehabt, mehr als 15 jahre lang.

Hi, 

I am retro-fitting my 1968 Bridgeport Series 1 Papertape NC machine with rpi5/Mesa7i96s/Gecko203v.

I've got everything working pretty well it seems, except for the ESTOP.

I have (and want) an external/manual ESTOP-in button.  It is currently setup Normally Closed and appears to be successfully plumbed through to the GUI, which is to say that the GUI ESTOP button tracks the status of the hardware ESTOP-in button perfectly.

The issue is that my ESTOP-out is no-longer tracking either the GUI ESTOP or the hardware ESTOP-in.  It just stays asserted all the time with no change of state.

To be clear, before I attempted to plumb in the hardware ESTOP-in button, my GUI ESTOP was correctly plumbed through to my ESTOP-out so that it would allow me to disable the steppers.

Aside: I have not been able to find any documentation that really explains how ESTOP is expected to work?  I'm unclear on if I should work with estop_latch or not?  The estop_latch documentation is also pretty thin and does not appear to include any examples for either simple or complex configurations?

Here is my current configuration... (generated by pncconf)
Thanks,

B

I did not add the pins to post-gui.hal.  I was under the impression that qtpyvcp created the halpins outside of the user-config HAL process.

I see pins like qtpyvcp.probe-in and qtpyvcp.timerhours.in in the demo post-gui hal file but there is no loadrt or addf statements present.

I hadn't bothered trying to connect the new qtpyvcp pins until I could see them in halshow.  All the 'standard' probe basic or qtpyvcp pins are present in halshow... just not the new ones I'm trying to create.

I agree with Tommy, transformers don't often fail. At least not without a good reason. This is partly why Tommy was asking about the fusing/circuit breakers. They are there to protect things like the transformer. If someone replaced the correct size fuses with larger ones because the correct ones kept blowing, this can lead to killing the transformer due to overload. There is likely a significant problem somewhere that needs to be identified and corrected first before using a new transformer. Maybe one of the drives has failed, maybe there is a shorted wire somewhere, but something is causing too much current to be drawn.

Uthayne wrote:

Are you still looking for testers? I am at a position where I have some capacity to perform testing on this device with you.

I have a 1000w fiber laser running LinuxCNC that I use ~15 hours a week for the last 2 years. I am actively pushing the limits of my height control using the BCL-amp - mainly limited by detection range and sampling rate. Looking at your specs I think it would blow the BCL amp out of the water and lead to more capabilities.

I have a Raytools head BM110
 

Nice to see someone running LinuxCNC with a fiber laser machine! I hope you get a chance to try the C2V Laser Sense and provide your feedback. 

Also, if you're willing to share, I'd be curious to know more about your machine setup/axes, whether you're using galvos, controller choice, and especially, your LinuxCNC configuration. Perhaps in a dedicated thread, as there aren't too many posts on here about laser machines.

It seems to expect exclusively from a fixed list of video providers. Imgur is not one of them. Not sure if there is a generic way to embed a .mp4 video file on this forum.

opw do you have any messenger for real-time chat? Also, what times work best for you?"

Guten Tag,

Ich möchte eine Industrielle 5achs Fräsmaschine auf Linux CNC umrüsten. Das Ziel ist es eine zuverlässige und genaue Maschine. Der Umbau dient als Testversuch um später evtl unsere Produktionsmaschinen ebenfalls auf linuxcnc umzurüsten.
Die Maschine hat servos mit encodern verbaut, es können aber gerne neue Motortreiber verbaut werden.
Der grobe Plan bis jetzt ist: Mini PC mit Linux CNC, Motoren über ethercat ansteuern. 

Die Frage ist jetzt ob das gleich zuverlässig und schnell wie eine mesa karte ist, und welche Komponenten die ideale lösung sind.

Ich freue mich über Tipps!
 

HiI have a cheap stepper from Aliexpress EO42-EC. its open loop (can be selected wit dipswitch open/closed loop) for nema 42 steppers, maybe you need to tweak some things but they look quite similar. I attached the config here   

Nice work - that's kinda what I was hoping to achieve with my 2.8.4 install, but after hours of going around in circles CGPT eventually ran out of ideas and told me to install a newer version of LinuxCNC. So I went with the Python bridging app approach, which has actually turned out pretty good..! (A couple of screen-shots attached).

 

I may try and expand it to search each point (L/R/U or D) and trigger via a pin (I have the SeanD through tool Zprobe working on my machine) - will have to see what CGPT says about that...