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  • cmorley
  • cmorley
21 May 2025 02:14
Replied by cmorley on topic Retrieving parameters values

Retrieving parameters values

Category: Qtvcp

I'm assuming this is just test code, as you could just set the paramEdit directly (based on the code you showed)

Typically I would use a callback (changed signal) from the lcdnumber or better yet a plain HAL pin to update paramEdit_MG_D.

while not STATUS.is_interp_idle(): might be better to try :
STATUS.cmd.wait_complete()

As an alternative you could use the HAL module to read the pins directly:
value = hal.get_value("motion.analog-out-05")
  • jonsar
  • jonsar
21 May 2025 01:02
The numpty needs help was created by jonsar

The numpty needs help

Category: Basic Configuration

Hi All
i am starting to pull what little hair i have left out and i need some help
il start from the beginning , I have a hobby cnc it runs Ubuntu 10.04 and it runs ok but it is a pox 14 years old 
I would like to update to Debian 12  . I have set up a hard drive with this and have Been setting up the stepconf files.
i know there has been a lot of changes in 14years , I am struggling with the pin conf .i have the old files and have been working them across to the new but the estop is causing me grief is there any body that knows how the 2 systems are different . I dont mean in a big sense what i mean is in he stepconf system so i can see where i am going long thanks
  • foxlabs
  • foxlabs
21 May 2025 00:24

GMOCCAPY 3.4.9 LCD7" can not display the whole GUI

Category: Gmoccapy

Hello Guys,
I use a 7"LCD resolution 1024x600 for display the GUI can not display all ,especilly the height ,does anyone met this problem ,how to solve this problem?Thank you !
  • Murphy
  • Murphy
20 May 2025 22:13 - 20 May 2025 22:16

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

Absolutely but I'm away with work for the next 3 weeks so won't be home until then to test. I hooked a multimeter up the output pins of the EC500 and could see the drop in voltage. Only happens in CSS mode. If I manually change the speed outside of CSS it responds straight away . When looking at remora.sp in halscope the signal is square and reacts quickly. During CSS, remora.sp tapers up and down (with x axis movement which it should) During the taper the voltage drops to nearly zero resulting in the spindle nearly stopping. Once the signal levels out(no more taper of the signal) it goes to the required speed.
  • Routerworks
  • Routerworks
20 May 2025 22:11
Replied by Routerworks on topic Calling next subroutine messes up offsets

Calling next subroutine messes up offsets

Category: General LinuxCNC Questions

Also here is what Freecad puts before each axis call:

N15060 G0 X0 Y0 F70
N15061 M06 (Set too top of surface Z0.75)
N15062 G92 Z0.75 (Pocket surface top)

Don't understand the first line. F70 should only apply to G1?
Why the G92. This changes the origin position rather than just the offset from the present origin???
  • scotta
  • scotta's Avatar
20 May 2025 20:57

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

Looking at the code for the hardware PWM, a few changes could be made to not stop the timer on a duty cycle change. A quick job for the weekend.

@Murphy, are you happy to test?
  • scotta
  • scotta's Avatar
20 May 2025 20:46

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

@ Thayloreing Looks like you have no Comms with the board. Which could be why you can't upload the config to the board. Look back in the posts there is steps there to change the IP address for the board to 10.10.10.10.

@scotta, have you tested the v5 boards with CSS ?. I'm having issues only in CSS mode. Signal keeps dropping when there is speed changes during CSS. Voltage newly drops to zero, once speed changes stop it goes to the required speed. I'm thinking it could be the 0-10v chips on the EC500's.

Hi, no sorry have not tested CSS mode. The 0-10v chip is a PWM to analog chip and the Remora code uses the hardware quad timer. With CSS the spindle speed is constantly changing. In the code when the duty cycle changes, the timer is stopped to allow the timer configuration to be updated. This may take long enough for the PWM to analog chip to drop to 0v.

The software PWM module updates the duty cycle on the fly. Running the software PWM module in the base thread may get the PWM frequency in the right ball park.

In my testing of the spindle analogue, I must admit that I never put a scope on the output. Just a multi meter, and that would not have reacted quick enough to see the drop to 0v.
  • oddwick
  • oddwick's Avatar
20 May 2025 20:39

[SOLVED] MesaCT problems with 7i96 pwm spindle

Category: Configuration Tools

it does adjust the output voltage a bit, but not the scale i dont think.

so here are some numbers when its working

mesa - 5.2v
pwm module - 12.1v in
m3 s12000 (min) - 2.34v in (2.53 unplugged) 4.92v out
m3 s24000 (max) 4.65/5.07(u) 8.62 out

if i step up the input voltage to 14.2v i get 9.77@24k and 5.24@12k

if i adjust the pot on it i can get 10v but only at 14v. i max out at 8.65 @12v. but when i get 10v, im at 5.78 on the low end which i suppose wouldnt be all that bad with an air cooled spindle vs going too slow
  • Routerworks
  • Routerworks
20 May 2025 20:00
Replied by Routerworks on topic Calling next subroutine messes up offsets

Calling next subroutine messes up offsets

Category: General LinuxCNC Questions

"Then comes the dawn"!
Now I understand the difference between Axis' P0 and the others. Big help.

I just want to change the Z offset for the axis I am in. It seems that if I make a G54 offset change it affects the entire program. Moves the entire image.

The difficulty I am having is moving from the end of the 4th position of the first subroutine back to the start (first) position of the second subroutine (o103) and repositioning the Z axis.

Freecad may have added some unnecessary moves and offsets.
For example I don't understand G0 X0 Y0 F70.
Also don't understand why it adds G92 offsets at the beginning of the next set of subroutine axis.

Getting there. Greatly appreciate your help.
  • PCW
  • PCW's Avatar
20 May 2025 19:58

[SOLVED] MesaCT problems with 7i96 pwm spindle

Category: Configuration Tools

Does that potentiometer on the PWM --> Analog module adjust the scale?
  • oddwick
  • oddwick's Avatar
20 May 2025 19:54

[SOLVED] MesaCT problems with 7i96 pwm spindle

Category: Configuration Tools

that is what i thought. it should just be a proportional voltage coming out, but there must be a small load on it because my pw
voltage drops about 0.5v when i plug it in and tye only way i can get 10v or close is to increase the input voltage to the module to 14v.

these are the new ones i have coming.
a.co/d/5rSxmMy
which is similar to tye board i have now.

i could just use rs485 to control the spindle, but this is a big machine and at least for now i use the same computer to control 3 machines and i dont want to have 2 cables running across the floor. i trip over one often enough, so i need to try and get this pwm running
  • Murphy
  • Murphy
20 May 2025 19:18 - 20 May 2025 19:19

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

@ Thayloreing Looks like you have no Comms with the board. Which could be why you can't upload the config to the board. Look back in the posts there is steps there to change the IP address for the board to 10.10.10.10.

@scotta, have you tested the v5 boards with CSS ?. I'm having issues only in CSS mode. Signal keeps dropping when there is speed changes during CSS. Voltage newly drops to zero, once speed changes stop it goes to the required speed. I'm thinking it could be the 0-10v chips on the EC500's.
  • PCW
  • PCW's Avatar
20 May 2025 19:01

[SOLVED] MesaCT problems with 7i96 pwm spindle

Category: Configuration Tools

Actually, the PWM --> analog circuit normally should not
care what the PWM input signal level is as long as it's enough
to drive the input circuit. That is, it should work identically
with a 4V signal as a 5V signal.
  • oddwick
  • oddwick's Avatar
20 May 2025 18:59

[SOLVED] MesaCT problems with 7i96 pwm spindle

Category: Configuration Tools

thanks tom for the words of wisdom as always. i have some new modules coming this afternoon and i will give those a go. ill also dig around and see if i have another 5v din psu floating around. i thought i had a 2a one somewhere here
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