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I am trying the configs from Trisa25,
I have only 1 motor hooked up.
Could this cause a problem? is there an easy way to modify this assuming 1 axis?

The following happens when I launch linuxcnc:

the drive starts out  _20ry, with the 2 flashing
switches to  _40ry , when  linuxcnc starts, with the 4 flashing
then to  _F0ry, shortly after
The y will flash when I turn the motor

I get no position feedback to linuxcnc when turning the motor.
The following is what linuxcnc prints to the screen.
I'm not sure about the USRMOT: ERROR command 30 timeout
doug@MillingMachine:~$ linuxcnc
LINUXCNC - 2.10.0~pre0
Machine configuration directory is '/home/doug/linuxcnc-dev/configs/my_ethercat_gantry'
Machine configuration file is 'cia402.ini'
Starting LinuxCNC...
linuxcncsvr (10034) emcsvr: machine 'EtherCAT Machine'  version '1.1'
linuxcnc TPMOD=tpmod HOMEMOD=homemod EMCMOT=motmod
Note: Using POSIX realtime
milltask (10048) task: machine 'EtherCAT Machine'  version '1.1'
halui (10050) halui: machine 'EtherCAT Machine'  version '1.1'
Found file(REL): ./cia402.hal
USRMOT: ERROR: command 30 timeout
emcMotionInit: emcTrajInit failed
note: MAXV     max: 100.000 units/sec 6000.000 units/min
note: LJOG     max: 100.000 units/sec 6000.000 units/min
note: LJOG default: 50.000 units/sec 3000.000 units/min
note: jog_order='XYZ'
note: jog_invert=set()
task: main loop took 0.074680 seconds
Shutting down and cleaning up LinuxCNC...
Running HAL shutdown script
HAL: ERROR: pin 'lcec.0.3.out-01' not found
shutdown.hal:2: unlink failed
task: 0 cycles, min=0.000005, max=0.074680, avg=-1.000000, 1 latency excursions (> 10x expected cycle time of 0.005000s)
Note: Using POSIX realtime
doug@MillingMachine:~$
 

What version of LinuxCNC?
That was an issue quite a while back, but normally that should never happen.
TRAJ values are the maximum allowed by any joint/axis, but the separate joint/axis limits should be respected at all times.

Where did you find Octopus for 50$ ?
I paid 89$ for the board and another 50$ for 8 of TMC drives, and probably another 100$ for delivery and customs!
Ordered another one and it got canceled, twice, due to living in a black hole.
Still, worth the money, for sure.
Just to be clear, the moment LinuxCNC gets Pressure Advance, i am switching everything to it, to much cr@p running Klipper. I still consider having a machine that can easily burn your house down controlled through USB is a safety hazard, no matter how much safety features it has.
Luckily, never had such issues.

So I have a question to get me edumacated   
So, I've seen a pile of questions related to Step on-time and Step space and it seems there's just a general rule of thumb for some numbers to put in as starting points. unfortunately, it drives my mind crazy. I would gander to think that every driver has a specific number for it but from looking at tech documents it is a bit hard to decipher especially when I don't really understand what it relates to (well somewhat understand). so, if I were to look at say documentation for the Gecko 201 because PNCconf has those settings already defined how would I pull that info out from the documentation or are those settings readily available because it's a drive that has been used more prominently?
I ask because I recently emailed the tech / support department at Stepper-Online and they had no idea what step on-time and step space were. found it rather odd that they would not know what info it was I was after. Their documentation doesn't seem to be lacking and appears to be about as detailed as say Gecko documentation.

Thank you very much.

do you have a rotational work offset set?, check the offsets page and look under R column to make sure it is zeroed out.

the old links still seem to work here. Please try again.

My interest was more pick and place and I have little experience with welding so I really do not know what can be achieved. However, I'd say, apart from relatively simple 3d paths, you would have a rather hard time to create gcode that would give you constant torch orientation along a more complex 3d path that also gives you constant speed.

My first question would be, how do you intend to create the gcode? A straight line or an arc in 3d space should be relatively easy but following a pipe joint would likely require a CAM of some sort. Also with a robot you really need to simulate the code to check for problems with singularities.

What I would recommend is this:

- take one of the available robot simulation configs and see if you can actually get what you want with that. If you cannot get it to follow the paths you need then there is really no point in going further

- If you think the software can get you where you want to go then you would need to figure out how to get the motors of the robot to run.

roland wrote:

You can see my config in the attached hal files.
The feed pot and the rapid pot makes 5% Steps

File Attachment:

File Name: 003.hal
File Size:23 KB

File Attachment:

File Name: panel.hal
File Size:11 KB

 

Hi Roland, could you send your hal files. Because the old link has expired and I need to make an mpg like yours.

Maybe this logger could help as it can create Gcode from the logged position:
forum.linuxcnc.org/21-axis/30986-axis-po...ger?start=100#296115

I'd say what you need is a lowpass filter.
Maybe this helps:
www.allaboutcircuits.com/technical-artic...o-an-analog-voltage/

have a look at the xyzbca kinematics in the double sim config attached here:
forum.linuxcnc.org/show-your-stuff/49103...-head?start=0#271334

Set the nutation angle to 90° and adjust the pivot lengths. Further documentation can be found in the README file and DOCUMENTATION folder in the zipped up config.

@Becksvill,

Looks awesome Grotius
I'm also following this closely
I have a 22 ton 5axis machine I would love to see this working on
It has rapids of 40m per min so very fast and heavy. Would be a good torture test of your scurve code
Good idea to test this out soon!  If you press stop in lcnc using 40m/min. I mean using the trapezium planner,
what will happen to your machine? Is the building shaking or is the machine walking to outside?
I ask this because a stop is very dangerous. I would to see happen a mavel to zero pause instead, Then realease the servo
drives. Or use the servo brakes is this is possible.

@Andrew,
I agree that tangents also don't satisfy the perfect solution.
If you make a proposal in the code language you like, we can test it. 

As today i am ready create fillets in 3 contours, fillets are made from polyline to polyline. The polyline may be a line or arc.




 

Hello! 
My name is Philip im 15 years old and me and my brother who is 19 are currently in the progress of rebuilding and retrofitting a brother tc215 that hasnt been used in the past 15 or so years. It was real dirty when we bought the machine so we decided to take it apart, clean and paint everything. By now we have taken apart and put together the y and x axis. I also took apart and cleaned the ballscrew nut and the linear rail carriges ( the 15 yo dried grease was no fun ). We thought about reballing them but never got to it. If the backlash is bad we will probably do it then. So i have some questions, we will probably replace all of the axis motors and drives, they are very small 150 watt toshiba motor and 300w on z. Thinking of using
stepperonlines t6 series servos. 750w for x and y and 1kw for z. They are just rebranded leadshine motors which i have heard good things about ( and they are very cheap ). Then the spindle motor and driver i will keep for now and see if its power is enough. ive gotten the pinout to the drive and it looks simple enough.  The orientation seems to be abit tricky. The atc motor i will replace for a closed loop stepper or a integrated servo i have laying around so that will be very simple to drive. The servo motors are step/dir so im thinking the mesa 7i96s ( almost the only thing in stock in europe ) will be a good fit for my project. Will the 16mm ballscrew and 20mm thk rails be enough for milling in harder metals like stainless and so on. To get a bigger ballscrew should´nt be so bad but the rails im not to sure about. i guess we have to wait and see. Do you think the motors are oversized i have gotten mixed opinions i just dont want to get them and they then turn out to be to small. im probably going to start ordering some electronics some time next week when i have put together the z axis assembly.

Now please feel free to answer some questions, add some questions and share your concerns and opinions.

Ich habe mal eine ini und hal Datei erstellt für eine 3-Achs Fräse, nur mit einfachen
Steppern mit 3200 Microschritten für die 7c80.
Dann hast du schon mal was womit du anfangen kannst...