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  • PCW
  • PCW's Avatar
15 Mar 2026 02:01
Replied by PCW on topic pin locations

pin locations

Category: General LinuxCNC Questions

To get the variable voltage, you set up the TB2 PWM output for spindle use in pncconf
The 7I96S manual shows the TB2 pinout of the analog output

7I96S Spindle + goes to a 10 or 12V supply (on a VFD this comes from the VFD itself)
7I96S Spindle out is the 0--10V analog voltage that goes to the Drives VIN
7I96S Spindle- goes to the drives COM pin and the negative pin of the 10 or 12V supply
  • ihavenofish
  • ihavenofish
15 Mar 2026 01:54
Replied by ihavenofish on topic Brother carousel encoders

Brother carousel encoders

Category: CNC Machines

unfortunately i dont have that info hand. it is probably in the tc229 thread.
  • PCW
  • PCW's Avatar
15 Mar 2026 01:48

7i84u - Mode 2, MPG and power connections

Category: Driver Boards

These are parameters that apply to normal high speed encoders:

#setp hm2_7i96s.0.7i84.0.0.enc0.counter-mode 0
#setp hm2_7i96s.0.7i84.0.0.enc0.filter 1

Not sserial devices

There is a count mode parameter for sserial MPG counters so you can choose 1x mode or 4X mode
  • grandixximo
  • grandixximo's Avatar
15 Mar 2026 01:15 - 15 Mar 2026 01:53
Replied by grandixximo on topic Ethercat random jitter fix

Ethercat random jitter fix

Category: EtherCAT

@TAKUYA
@Atsu

please check the value of the parameters lcec.0.pll-step
You can do so with this command

halcmd show param lcec.0.pll-step 

This parameter will be set at 1000 automatically if you have RTAPI_TASK_PLL_SUPPORT

also I have updated again the repo

if you could be so kind as to download, build and test again, thank you

github.com/grandixximo/linuxcnc-ethercat
  • tommylight
  • tommylight's Avatar
15 Mar 2026 00:22

Rufus found problem with linuxcnc_2.9.8-amd64.hybrid.iso -- missing files

Category: General LinuxCNC Questions

I might have not been clear on my previous post, Ventoy and Rufus are not the same thing nor do they serve the same purpose"
Ventoy = bootable USB drives, install once, use as you see fit just by copying and ISO files to it, multipe ISO and IMG files supported, all on the same USB and all bootable from a menu
Rufus = Balena etcher = tools to write an ISO/IMG file to a USB = single ISO/IMG
  • tommylight
  • tommylight's Avatar
15 Mar 2026 00:16
Replied by tommylight on topic Inaccurate milling - what could it be?

Inaccurate milling - what could it be?

Category: Basic Configuration

Upload the pictures here on the forum, not on third party websites, way to many scripts running on those websites.
  • vetsin
  • vetsin
14 Mar 2026 23:30

Inaccurate milling - what could it be?

Category: Basic Configuration

I went to make what should have been a 29.534mm hex bolt, however it came out very off spec. I've no real idea why.  I did go through the process of checking backlash and ensuring my velocity was alright a long time ago -- but honestly it's been a very slow project and I forget what I did. Any ideas what the reason for the problem could be? What should I check first?
 
  • rodw
  • rodw's Avatar
14 Mar 2026 23:25

Rufus found problem with linuxcnc_2.9.8-amd64.hybrid.iso -- missing files

Category: General LinuxCNC Questions

@RODW,

Have you tried Ventoy?

I've tried a number of tools and the only one that has never let me down is balena etcher. It even works with raspberry pi images!
  • tommylight
  • tommylight's Avatar
14 Mar 2026 22:45
Replied by tommylight on topic 7i84u - Mode 2, MPG and power connections

7i84u - Mode 2, MPG and power connections

Category: Driver Boards

(Just realized I posted this into general instead of under boards, maybe I can get someone to move it.)

Done.
Thank you.
  • tommylight
  • tommylight's Avatar
14 Mar 2026 22:42

Rufus found problem with linuxcnc_2.9.8-amd64.hybrid.iso -- missing files

Category: General LinuxCNC Questions

Ventoy is a different beast, but it does simplify everything USB, all it takes is just a simple copy of the ISO file. That is it, nothing more.
But installing it might just end up sideways, it does warn a lot to be careful, and takes about 1-2 minutes to install.
I use it a lot, daily, on many USB, SSD and NVME, a lot....saves a lot of time for testing and installing operating systems, works even for WinXP and Win10, and a lot of Linux distros.
  • mooser
  • mooser
14 Mar 2026 22:38
Replied by mooser on topic 7i84u - Mode 2, MPG and power connections

7i84u - Mode 2, MPG and power connections

Category: Driver Boards

(Just realized I posted this into general instead of under boards, maybe I can get someone to move it.)

I got just the encoder itself moved over to the 7i84u
#net jog-counter <= hm2_7i96s.0.encoder.00.count
is now
net jog-counter <= hm2_7i96s.0.7i84.0.0.enc0.count
and it's working as it should

But these lines don't seem to work anymore or I'm referencing them incorrectly
#setp hm2_7i96s.0.7i84.0.0.enc0.counter-mode 0
#setp hm2_7i96s.0.7i84.0.0.enc0.filter 1
From what I'm reading those don't exist on the 7i84u in mode 2
Something I need to do some other way or something I don't need to worry about ?
M
  • natas01
  • natas01
14 Mar 2026 22:23 - 14 Mar 2026 23:02
Replied by natas01 on topic pin locations

pin locations

Category: General LinuxCNC Questions

Theres no vfd there’s a image of what im trying to hook up in a earlier post
im trying to find out how to get variable voltage 
  • tommylight
  • tommylight's Avatar
14 Mar 2026 21:41
Replied by tommylight on topic pin locations

pin locations

Category: General LinuxCNC Questions

so would the spindle enable be the variable voltage

No, spindle enable is just enabling the VFD, speed is controlled by variable voltage.
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