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  • Philip Lydin
  • Philip Lydin
Today 19:49
Tuning lichuan servos was created by Philip Lydin

Tuning lichuan servos

Category: General LinuxCNC Questions

I’m trying to tune my eethercat lichuan a5 servos but I’m getting around 0.02mm ferror instantly regardless the speed which then quickly drops to a couple microns steady. Can you recommend a way to fix it or is it ok as is?
  • galmiklos
  • galmiklos
Today 19:20 - Today 19:21
Replied by galmiklos on topic Weird direction issue with XYZY PrintNC

Weird direction issue with XYZY PrintNC

Category: Basic Configuration

I posted the question on the linuxcnc channel on the PrintNC Discord server too, and mikemacwillie pointed out the problem in my FlexiHAL-config.txt file. The Y limit input was inverted, so the machine thought it was already triggered when the carriage was nowhere near.

After changing it from True to False, I also had to revise the HOME and HOME_OFFSET parameters, as I interpreted them incorrectly.

Please, see my correct config files attached.

File Attachment:

File Name: remora-uFl...5-10.ini
File Size:3 KB
 

File Attachment:

File Name: remora-uFl...5-10.hal
File Size:7 KB
 

File Attachment:

File Name: FlexiHAL-c...5-10.txt
File Size:4 KB
  • RotarySMP
  • RotarySMP's Avatar
Today 18:31
Replied by RotarySMP on topic Ich brauche Hilfe bei meinem Getriebe

Ich brauche Hilfe bei meinem Getriebe

Category: HAL

Ich arbeite gerade an eine ähnliches (aboer komplizierteres) Problem auf meine Schaublin Drehmaschine.

Als nicht programmierem habe ich mich auch von Comps gedruckt. Aber als schlechte Programmiere, mache ich es mit Unterstützung von Claude KI. Ein Comp to Komplieren is sehr einfach.

Das wichtigste ist die Aufstellung die Requirements:
Welche Ausgange gibt es, Welche sind Analog, welche digital. 
Welche Eingänge gibt es. Hat der 500W ein Spindle encoder? Getriebe positions Schalter?
Wird das Motor Open loop oder closed loop gesteuert?
Welche Inhibits braucht es? Gangwechsel lediglich beim Stillstand?
Muss der Spindle beim Gangwechel hin und her Oszillierien wie meine 400E?

Ich habe damals alles über der MAHO 400E Getriebe hier zusammengetragen.
github.com/jin-eld/mh400e-linuxcnc/wiki/...Gearbox--Description.
... dann eine Flowchart erzeugt.
github.com/jin-eld/mh400e-linuxcnc/commi...aed6b81e0642696bc8e1

Ein Freund hat es damals in zwei Durchgänge schon fertig programmiert gehabt. Mit eine ähnliche "Leistungsheft" wird KI es auch.
  • Sascha H.
  • Sascha H.'s Avatar
Today 18:27

Erste Schritte mit A6-EC Servo: 24 V für Bremse, Bremswiderstand und RJ45-Kabel?

Category: Deutsch

Das Kabel für den Encoder hab ich tatsächlich in 10 Meter. Das für den Motor mit Bremse in 10 Meter habe ich etwas gekürzt. Kann ich morgen mal nachmessen.
  • andrax
  • andrax's Avatar
Today 17:57 - Today 18:08

Erste Schritte mit A6-EC Servo: 24 V für Bremse, Bremswiderstand und RJ45-Kabel?

Category: Deutsch

Schade hatte gerade überlegt, ob ich den dennoch nehme, ich glaube aber nicht, dass du 10m Kabel hast für UVW + Bremse
  • Sascha H.
  • Sascha H.'s Avatar
Today 17:39
Replied by Sascha H. on topic Leadshine L7 / L6 servos

Leadshine L7 / L6 servos

Category: EtherCAT

Leadshine has two product lines. One is for the international and one is for the domestic market. EL = international, L = chinese market.

You can find the L7 on www.leisai.com. This is the chinese site.

Check the encoder resolution in the software. Mine were advertised as 24-bit and there are 23-bit. I have the L8EC drive and ACM2 motors.
  • COFHAL
  • COFHAL
Today 14:35 - Today 14:44
Replied by COFHAL on topic Qtvcp GUI and hal pins

Qtvcp GUI and hal pins

Category: Qtvcp

Indeed, QTdragon defaults to the linuxcnc/nc_files folder, regardless of the path set in SUBRUTINES_PATH.
Sometimes more information is needed about this, because unlike other GUIs, the path for these subroutines in QTdragon is always the same.
It would also be good to add information on how to use Bridge_HAL and how to connect these new pins to external buttons, thus expanding their use and not limiting them only to inputs that can be controlled through the HALUI pins.
In fact, no online documentation for QTdragon clearly includes this feature.
This might seem very simple to someone experienced with LNC, but from what I constantly read on the forum, there are many people, like myself, who initially don't know how to use these features.
  • m0602232
  • m0602232
Today 14:21
Replied by m0602232 on topic LinuxCNC S-Curve Accelerations

LinuxCNC S-Curve Accelerations

Category: General LinuxCNC Questions

This looks promising, nice work!

A couple of quick tries, sometimes the compressor seems to output scientific notation on small decimals; ie. X-76.198 Y6.6066e-05. That and injected G0 X0 Y0 Z0 at the beginning are only things that pop up at the first tests.
  • andrax
  • andrax's Avatar
Today 14:19
  • galmiklos
  • galmiklos
Today 13:38 - Today 13:55
Replied by galmiklos on topic Weird direction issue with XYZY PrintNC

Weird direction issue with XYZY PrintNC

Category: Basic Configuration

Yes, the moment I pressed submit I realized I forgot the attachments, please see them attached now.

File Attachment:

File Name: remora-uFlexiNet.ini
File Size:3 KB

File Attachment:

File Name: remora-uFlexiNet.hal
File Size:7 KB

File Attachment:

File Name: FlexiHAL-config.txt
File Size:4 KB


The joints are for sure not reversed, I have the exact same wiring and driver settings on both sides, and as I mentioned, it works perfectly with grblHAL.

The weirdness is actually exactly it. I did try reversing one of the Y joints by inverting the scale parameter and the gantry moved correctly in axis mode when jogging (before homing), but then, when I started homing, the joints started to move the opposite directions, starting to tear the machine apart. Like it had a split mind. When jogging, wants to move reversed, when homing, straight. Perhaps one side starting to move the opposite direction at the end of the homing is a result of that, as the final position is taken, the move is using the same "method", as jogging.

I am now compiling the remora-eth firmware in debug mode (USE_DEBUG=1), perhaps I will see something in the debug terminal (PC connected through USB)? 
  • tommylight
  • tommylight's Avatar
Today 11:42
Replied by tommylight on topic Weird direction issue with XYZY PrintNC

Weird direction issue with XYZY PrintNC

Category: Basic Configuration

No attachments, and how are the Y joints driven?
Chances are you have one Y joint reversed, so adding a - in front of the SCALE value should fix it.
  • Sascha H.
  • Sascha H.'s Avatar
Today 11:37

Erste Schritte mit A6-EC Servo: 24 V für Bremse, Bremswiderstand und RJ45-Kabel?

Category: Deutsch

Dann teste erstmal in Ruhe, und wenn 400W ausreichen meld dich hier. Dann finden wir schon eine Möglichkeit. Ich hab 2 ohne und 1 mit Bremse.
  • galmiklos
  • galmiklos
Today 10:56
Weird direction issue with XYZY PrintNC was created by galmiklos

Weird direction issue with XYZY PrintNC

Category: Basic Configuration

My configuration is a PrintNC (a dual Y ganged CNC machine) with a FlexiHAL board with a uFlexiNET Ethernet board, and I am connecting it directly with an Ethernet cable to a Dell Optiplex 780 , running the latest LinuxCNC image (linuxcnc_2.9.8-amd64.hybrid.iso).
I flashed the board with remora-eth, and uploaded the attached configuration (FlexiHAL-config.txt). I also attached the hal and ini files.
What happens is, that I can home and move X and Z correctly, but not Y. The gantry goes back to the endstops, and I can see the homing sequence almost completing successfully, but at the end, one side starts moving to the opposite direction, towards the front.
The wiring and driver setting are identical on both Y sides, and the same hardware works perfectly with grblHAL, so I don't think it's a wiring or driver issue.
Any help is greatly appreciated.
  • Muecke
  • Muecke's Avatar
Today 10:15

Erste Schritte mit A6-EC Servo: 24 V für Bremse, Bremswiderstand und RJ45-Kabel?

Category: Deutsch

Hallo Sascha H.,

grundsätzlich habe ich Interesse daran!
Ich habe mir jetzt den 750-W-Motor mit Treiber bestellt, der ist auch gestern gekommen. Netzfilter und Encoder-Kabel mit Batterie fehlen noch (sind noch unterwegs).
Wenn ich demnächst etwas Zeit habe, möchte ich ihn in mein LinuxCNC einbinden und hoffe, dass ich dann ein paar Drehmomentwerte aus meiner Musteranlage bekomme, damit ich die Motoren abschätzen kann, die wirklich benötigt werden.

Wenn ich das weiß und 400 W ausreichend sein sollten, hätte ich Interesse daran.
Wie kann ich dich am besten erreichen? PN geht hier im Forum leider nicht.

Gruß Mücke
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