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  • my1987toyota
  • my1987toyota's Avatar
Today 19:36
Replied by my1987toyota on topic Brilliant Bambu Lab

Brilliant Bambu Lab

Category: Off Topic and Test Posts

And furthermore 

  • my1987toyota
  • my1987toyota's Avatar
Today 19:31
Replied by my1987toyota on topic Brilliant Bambu Lab

Brilliant Bambu Lab

Category: Off Topic and Test Posts

And there's more

  • markder13
  • markder13
Today 18:30
Replied by markder13 on topic Schaublin 125-CNC retrofit.

Schaublin 125-CNC retrofit.

Category: Turning

My immediate reaction when I saw your problem was a cascade PID loop. These are two PID loops: fast and slow.
The fast loop is a normal encoder to VFD loop.
The second loop controls the CVT. That controller tries only to keep the output of the first loop at 6V (= 50Hz). I think you do not have to calculate the gear ratio, etc. Maybe it would work without any additional hardware.If the output of the fast controller (VFD) is below 5V, the CVT turns on until it hits the limit or the controller output is above 5V and below 7V. Above 7V, the CVT turns on in the other direction.

If this does not work and feedback from the CVT is needed, a Waterproof Wire Encoder (Aliexpress) can be considered. Then, the PV (actual position of the CVT) can be used to calculate / adjust the $K_p$, $K_i$, and $K_d$ of the fast VFD loop. Mark
  • robert0423
  • robert0423
Today 18:03
Replied by robert0423 on topic hm2_eth Connection refused

hm2_eth Connection refused

Category: General LinuxCNC Questions

That solved the issue.
  1. Configured the jumpers on the MESA 7i96S (FPGA card) to Down/Up which set the IP address to 10.10.10.10. This placed it on a separate subnet isolated from my 192.168.1.x main network.
  2. Set the IP address of the RPi wired ethernet (ETH0) (Settings/Advanced networking) to the static manual address 10.10.10.1. This placed the RPi ethernet on the same subnet as the MESA.
  3. Set the IP address for the WIFI on the RPi to use DHCP. This received an IP address for the main network (192.168.1.110).
  4. In Pncconf, set the IP address for the Card (i.e. the MESA FPGA 7i96S) to match the IP address set by the jumper configuration, 10.10.10.10.
Everything now works as expected.

Thanks
Bob
  • andypugh
  • andypugh's Avatar
Today 11:44 - Today 11:45
Replied by andypugh on topic Best way to sync collinear Spindles (running as step/gen signal)?

Best way to sync collinear Spindles (running as step/gen signal)?

Category: Advanced Configuration

As these are both step-dir I think you could simply set the scales the same in the drives and send them both the same step and direction pulses (at the hardware level)

I feel that I am missing something, though, why are the two parts driven separately if they always rotate as-one?
  • PCW
  • PCW's Avatar
Today 05:01
Replied by PCW on topic hm2_eth Connection refused

hm2_eth Connection refused

Category: General LinuxCNC Questions

It looks like you  have set the card IP address in the hal file to the host address
rather than the FPGA card address:

hm2_eth: ERROR: Could not retrieve hardware address (MAC) of 10.10.10.1: Connection refused
 
  • PCW
  • PCW's Avatar
Today 04:58
Replied by PCW on topic Mill Retrofit with Fanuc DC Drives

Mill Retrofit with Fanuc DC Drives

Category: HAL

The runaway suggests that possibly  one of the feedback loops is reversed.
  • fully_defined
  • fully_defined's Avatar
Yesterday 03:23
Replied by fully_defined on topic ELO touchscreen driver and interface install.

ELO touchscreen driver and interface install.

Category: Computers and Hardware

I vibecoded it with Claude Code. Works a treat!
  • kb9ydn
  • kb9ydn
Yesterday 02:21
Replied by kb9ydn on topic Remora for RP2040

Remora for RP2040

Category: Computers and Hardware

I had a quick look at the PortingPlan.md. Am I right to presume that this was AI assisted coding? It's insane how this thing is a game changer for non coder; I have some understanding of coding, read a lot of source code, but am not able to write more than a couple of functions to adapt an existing code (and even that part is mainly copy-pasting form existing libraries). Yet, within three days had a CANopen motor connected to a RPi spinning smoothly in CSP mode. I wouldn't say with Claude-code's help, but rather than Claude-code had it working with some of my contribution for hradware connection and debugging. 
File Attachment:


It is AI assisted, Claude in fact!  And yes, Claude did basically all of the actual coding based on existing work.  I did have to do a fair bit of flashing binaries and scoping pins for voltages and timing.  And it does need some guidance for how to fix issues that come up.  It seems very good at writing code given enough direction.  But it doesn't necessarily know which way to do things when there are multiple options available.  It can also go off on tangents when troubleshooting complex problems.  That said, it saves an unbelievable amount of time.  I do have quite a few years of hobby programming experience in a number of contexts, but I've never been a professional programmer.  I'm more into hardware hacking.  So indeed, AI assisted coding is literally game changing for less than great programmers!

C|
  • tbrasselle
  • tbrasselle
Yesterday 01:38
Replied by tbrasselle on topic Mill Retrofit with Fanuc DC Drives

Mill Retrofit with Fanuc DC Drives

Category: HAL

I did have the motor disconnected from the ballscrew initially. I've now connected it back and the problem has not gone away. I've attached a halscope screenshot showing the current status. when i enable the drive it oscillates, starts to smooth out, then runs away. 

I can adjust the velocity loop gain on the drive but i have been hesitant to do that. the drive and motor were working as is with the Fanuc controller before I disconnected them. 
  • robert0423
  • robert0423
Yesterday 00:20
hm2_eth Connection refused was created by robert0423

hm2_eth Connection refused

Category: General LinuxCNC Questions

I get a 'Connection refused' error shown below when I try to start linuxcnc using a Raspberry Pi 4B and a new MESA 7i96S card.
I can successfully ping the MESA card from the RPi
  • I can get card information using mesaflash --readhmid
  • iptables is configured to accept all packets and not drop any.
  • The yellow and green LEDs are on for both the RPi and the MESA.
I've tried multiple RPis, MESA cards (both are new), power supplies, network cables, Linuxcnc versions, RPi imagers, ip configurations, disabling WIFI and setting the IP address on the MESA to both 10.10.10.10 and 192.168.1.121.  
The results are the same; Connection refused.

Any thoughts or information on how to resolve this issue is greatly appreciated.

Found file(REL): ./cncmill.hal
Shutting down and cleaning up LinuxCNC...
Running HAL shutdown script
hm2: loading Mesa HostMot2 driver version 0.15
hm2_eth: loading Mesa AnyIO HostMot2 ethernet driver version 0.2
hm2_eth: ERROR: Could not retrieve hardware address (MAC) of 10.10.10.1: Connection refused
hm2: unloading
Removing HAL_LIB, RTAPI, and Real Time OS modules
Removing NML shared memory segments

Debug file information:
Note: Using POSIX realtime
hm2_eth: rtapi_app_main: Connection refused (-111)
./cncmill.hal:9: waitpid failed /usr/bin/rtapi_app hm2_eth
./cncmill.hal:9: /usr/bin/rtapi_app exited without becoming ready
./cncmill.hal:9: insmod for hm2_eth failed, returned -1
1509
Stopping realtime threads
Unloading hal components
Note: Using POSIX realtime

 


 
  • COFHAL
  • COFHAL
Yesterday 22:29
Replied by COFHAL on topic Qtvcp GUI and hal pins

Qtvcp GUI and hal pins

Category: Qtvcp

Yes, I already tested it and those new HAL pins work.Thanks.
  • Dudelbert
  • Dudelbert
Yesterday 19:17
Replied by Dudelbert on topic Schaublin 125-CNC retrofit.

Schaublin 125-CNC retrofit.

Category: Turning

I have a few points.

First: you refer to the fan multiple times. If your machine is like mine, and I have no reason to believe otherwise, the motor has no fan where you think the fan is, the thing there is the brake.

Second: regarding your solution 2, I can make a simple op-amp for you. Scaling to 24 V is easy, as you already have 24 V, and it would have 2.5 times the resolution of the system that gives satisfactory results for me. Yes, it has way less resolution than an encoder, but you do not need it. This would be the fastest and least invasive route.

Marti
  • spumco
  • spumco
Yesterday 19:15
Replied by spumco on topic Schaublin 125-CNC retrofit.

Schaublin 125-CNC retrofit.

Category: Turning 

1/ pull the motor fan, and use the shaft stud to drive an encoder, and then mount an electric cooling fan on the shround for the motor.

I vote encoder.

An encoder separate fan will allow:
  • lower continuous motor speed without overheating
  • higher continuous motor speed without the chance of a 45-year old fan leaving the chat
  • you and LCNC not to guess what the motor speed is, adding confidence you aren't going to send the motor in to orbit

All giving you a wider safe frequency/speed range for your VFD/motor - and thus making each 'step' in the CVT more useful (wider range).

Actually, I vote for getting rid of the CVT.  Do what CNC mfgrs have been doing since the 80's & 90's and stick a big a$$ spindle-servo in there with an 8kRPM top end and appropriate-ratio single-speed belt drive.  Just horse the thing.  Simplify your control loop and save your sanity.

But I digress...
File Attachment:
  • PCW
  • PCW's Avatar
Yesterday 16:22
Replied by PCW on topic Mill Retrofit with Fanuc DC Drives

Mill Retrofit with Fanuc DC Drives

Category: HAL

Are the motors connected to the linear axis?

This will affect the loop stability

Can you change the velocity loop gain on the drives?
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