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  • cmorley
  • cmorley
24 Apr 2025 16:41 - 25 Apr 2025 00:29
Replied by cmorley on topic qtdragon mod

qtdragon mod

Category: Qtvcp

The problem is that the 'on_counts_value_changed' function uses the 'value' (encoder counts) as an absolute value (as you said), but you could use it as a relative value.

if new value is higher then the last value, then move up 10% higher then the current rate.
if new value is less then the last value then move down 10% from the current rate

The current rate you can get from STATUS or from the appropriate widget.
I'm sure there will be some minor details to adjust to.
  • billru
  • billru
24 Apr 2025 16:27
Stepper motors for a EtherCat system was created by billru

Stepper motors for a EtherCat system

Category: General LinuxCNC Questions

Hello everyone, 
This my first post, I am a DIY hobbyist I am trying to learn what hardware is being used for a diy CNC mills. I ran across different system and setups but I have been unable to get a clear understanding on stepper motors being used in a diy home type CNC mill for a EtherCat setup.I have poked around and searched youtube but still have not got a clear knowledge, my question is can a Nema 23 closed loop stepper motors with encoder be used in a EtherCat setup or dose the stepper have to be EtherCat designated style motor.
I have some 23HS30-5004D-E1000 motors I was going to try and play with and see if I can learn a Ethercat system 
  • Hakan
  • Hakan
24 Apr 2025 16:14
Replied by Hakan on topic LinuxCNC S-Curve Accelerations

LinuxCNC S-Curve Accelerations

Category: General LinuxCNC Questions

It's pretty rudimentary. There are these basic PDOs
      <syncManager idx="2" dir="out">
        <pdo idx="1600">
          <pdoEntry idx="6040" subIdx="00" bitLen="16" halPin="cia-controlword" halType="u32"/>
          <pdoEntry idx="6060" subIdx="00" bitLen="8" halPin="opmode" halType="s32"/>
          <pdoEntry idx="607A" subIdx="00" bitLen="32" halPin="target-position" halType="s32"/>
        </pdo>
      </syncManager>
      <syncManager idx="3" dir="in">
        <pdo idx="1a00">
          <pdoEntry idx="6041" subIdx="00" bitLen="16" halPin="cia-statusword" halType="u32"/>
          <pdoEntry idx="6061" subIdx="00" bitLen="8" halPin="opmode-display" halType="s32"/>
          <pdoEntry idx="6064" subIdx="00" bitLen="32" halPin="actual-position" halType="s32"/>
        </pdo>
so basically one send a wanted position to the drive and read the current position back. That's all.
Following error is calculated in linuxcnc.
The cia402 module basically just passes position after scaling to the drive. And reads back actual position.
It also does the state machine walking, but that's in the beginning, then that idles.
 
  • jjdege
  • jjdege's Avatar
24 Apr 2025 15:18
Replied by jjdege on topic Remora - ethernet NVEM / EC300 / EC500 cnc board

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

I do the ST Linkv2 procedure and it does everything right,
 

hi
by correct procedure you mean the one described by @Scotta to convert a STlink V2 into a CMSIS-DAP probe.
Pyocd will not see it as STlink, but as CMSIS-DAP
pyocd list

 
  • vre
  • vre
24 Apr 2025 15:08
Replied by vre on topic XHC-HB04 wireless MPG pendant HAL module

XHC-HB04 wireless MPG pendant HAL module

Category: HAL

Some easier way to do this ?
This code github.com/LinuxCNC/linuxcnc/blob/master.../hallib/xhc-hb04.tcl
creates hal pins pendant_util.X can do something with these pins?
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