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  • my1987toyota
  • my1987toyota's Avatar
24 Jul 2024 20:24 - 24 Jul 2024 20:27
Replied by my1987toyota on topic Hot wire foam cutter - mapping Z and A axes to U and V

Hot wire foam cutter - mapping Z and A axes to U and V

Category: Basic Configuration

Looks like it could handle full 4' x 8' sheets of foam . Cool. Does your DevFoam program also make code for a 5th axis?
  • Lpkkk
  • Lpkkk
24 Jul 2024 19:47 - 24 Jul 2024 19:48
Replied by Lpkkk on topic Remora - ethernet NVEM / EC300 / EC500 cnc board

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

Hi all, today I've tried to flash my nvem (v6), unfortunately without luck. I've got timeout error.
I've used this daplink device :
github.com/wuxx/nanoDAP/blob/master/user_manual_en.md

I've connected nvem to my daplink like that(looking at the nvem from the bottom, so my daplink connectors are on bottom-right) :
1-not connected 
2-tms/io
3-tck/ck
4-gnd 


I've connected external 24v to nvem board. 
I'm not sure what I've done wrong. Can someone please help? 

 
  • kmeld
  • kmeld
24 Jul 2024 19:28
Subrouting Path - no effect was created by kmeld

Subrouting Path - no effect

Category: AXIS

Hi,
I have added
SUBROUTINE_PATH  = /home/km/G_Code/SUB/

in to DISPLAY sectoion of INI file, but this has no effect.
I can only call subroutines if their files are in PROGRAM_PREFIX directory.

How to correctly specify subroutine patch for AXIS?

Cris.
  • tommylight
  • tommylight's Avatar
24 Jul 2024 19:04 - 24 Jul 2024 19:05
Replied by tommylight on topic Mostly 3D Printed CNC Foam cutter

Mostly 3D Printed CNC Foam cutter

Category: CNC Machines

Use a BTS7690 or whatever numbers, very cheap, has no slow optocouplers to mess the signal, as there is no need for isalation from the same power supply.
And each can controll 2 heaters independently (well it can do 4 but ... ), can handle over 30A i think on each IC.
Edit:
Oooops, i mentioned this before on this topic, sorry.
  • Hawk83
  • Hawk83
24 Jul 2024 18:44 - 24 Jul 2024 19:47
Replied by Hawk83 on topic Carousel Toolchanger

Carousel Toolchanger

Category: Advanced Configuration

Hi again.

I understand the general concept of motion controlled/interpolated axes and how they work. But I can’t clearly see how all the different components/functions/addons in LinuxCNC work together and share different kinds of parameters, variables, bits, etc.

As the machine is setup now, the tool carousel motor is configured as Joint 3/C-axis and can be commanded manually by jogging, by MDI-commands and also by a G-code program. In other words, a fully functioning axis that can be interpolated with the rest of the axes on the machine.

The servo-drive is controlled by a +/- 10V analog signal and is giving encoder feedback til LinuxCNC.

I have setup the encoder-scaling in the servo-drive so that the servo-drive sends 3600 encoder-pulses per revolution of the carousel back to LinuxCNC.

My tool-carousel can hold 8 tools, so the 3600 pulses per revolution is easily divided by 8 to get 450 pulses per tool-pocket advancement.

Now… I know this setup is completely overkill for driving a tool-carousel, both in terms of accuracy and motion controllability, but as this is how the machine is setup, I was hoping I could use the tool-carousel as is.

So to adjust my questions:

-Can the tool-carousel be controlled (relatively easily) from carousel.comp with this setup? i.e. with +/- 10V analog signal and encoder feedback?
-If not, what would be an easy way of rearranging the setup so that I can get this to work? Do I need to rewire and reconfigure the servo-drive so that I can move/jog it at a constant speed by HAL-pins?

Hope this clarified my project a bit. :)

Thanks for all the replies folks. I really appreciate it. :)
  • Ritterchen
  • Ritterchen
24 Jul 2024 17:46
Replied by Ritterchen on topic Duplicate settings in Pref File

Duplicate settings in Pref File

Category: Gmoccapy

I can confirm that these errors appear only after a toolchange has been done after LinuxCNC started.
  • garthnoakes
  • garthnoakes
24 Jul 2024 17:28
Replied by garthnoakes on topic Hot wire foam cutter - mapping Z and A axes to U and V

Hot wire foam cutter - mapping Z and A axes to U and V

Category: Basic Configuration

No bow - I built a machine that's about 9' total wire space, 4' wide and 4' high. I used a spring on one side and a tube filled with lead weights on the other side, The wire goes to that through a pulley, so I can cut tapers.

Its really a simple machine but I had lots of problems - parallel port issue, blown power supply etc. But now it is working pretty well
  • my1987toyota
  • my1987toyota's Avatar
24 Jul 2024 16:20
Replied by my1987toyota on topic Mostly 3D Printed CNC Foam cutter

Mostly 3D Printed CNC Foam cutter

Category: CNC Machines

The SSR I was using was a DC to DC solid state relay.And I agree the problem I had was probably due to the pwm switching frequency
being too high as it went from nothing to holy crap my wire is glowing with the control only commanding a change between
5 to 10 percent. On my stand alone Hot wire power supply which uses a PWM brushed motor controller and gives me plenty
of linearity. Both are using 24VDC power. The mosfet I ordered is set from the start to drive and control a heater. Bed, Hot
wire, doesn't matter. They're both resistance heaters. Right now the control on the foam cutter is using GRBL. I am still
struggling to get a working PWM signal coming out of my 7196 to drive a circuit to control the hot wire. And since I need
my foam cutter operational for a demonstration for some people I know at the flying club I needed something with a
high probability of success to work. For now the SSR isn't it. Fortunately I still have my stand alone power supply and 
if I must I will use that for the demonstration. I just don't have a whole lot of faith in the free standing mosfet on the RAMPS
1.4 board D8 position. I could be wrong , but having a mosfet burn up mid way through a demonstration don't look good.
LOL.
  • anli
  • anli's Avatar
24 Jul 2024 15:49 - 24 Jul 2024 15:51
Error in log was created by anli

Error in log

Category: Basic Configuration

Hello,
I get the following error in log:
Loading Real Time OS, RTAPI, and HAL_LIB modules
Starting LinuxCNC IO program: io
libnml/buffer/shmem.cc 320: Shared memory buffers toolCmd and toolCmd may conflict. (key=1004(0x3EC))
libnml/buffer/shmem.cc 320: Shared memory buffers toolSts and toolSts may conflict. (key=1005(0x3ED))
libnml/buffer/shmem.cc 320: Shared memory buffers emcError and emcError may conflict. (key=1003(0x3EB))
Starting HAL User Interface program: halui

The full log for reference is (I solved the error with io.hal but wonder about the above three lines):
Warning: Spoiler!


How can I solve this? I'm using LinuxCNC 2.9.3 from recommended installation with Debian 12 (as downloadable on download site).

Thanks a lot for your help!
Best, André
  • manfrel
  • manfrel
24 Jul 2024 15:46
Replied by manfrel on topic Mesa 7i96s + DM556T -> Motors not moving

Mesa 7i96s + DM556T -> Motors not moving

Category: Driver Boards

Where do I find this pin?
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