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  • PCW
  • PCW's Avatar
14 May 2025 00:43
Replied by PCW on topic None of the axis are moving - using mesa 7i92t with 7i76u

None of the axis are moving - using mesa 7i92t with 7i76u

Category: Basic Configuration

Yes, the field I/O section of a 7I76 is a Sserial device (basically a 7I84 but local)
  • SteepLearningCurve
  • SteepLearningCurve
14 May 2025 00:31
Replied by SteepLearningCurve on topic None of the axis are moving - using mesa 7i92t with 7i76u

None of the axis are moving - using mesa 7i92t with 7i76u

Category: Basic Configuration

Hi PCW
Yes, I did set it to zero :)
I did not know that Smart Serial Ports were needed to make anything io cards work.
I thought Smart Serial IO was to link via serial connectivity to some kind of remote daughter board.
I shall search on the forum to find out more about it.
Many thanks for your help :)
Much appreciated.
  • PCW
  • PCW's Avatar
13 May 2025 23:19 - 13 May 2025 23:35
Replied by PCW on topic None of the axis are moving - using mesa 7i92t with 7i76u

None of the axis are moving - using mesa 7i92t with 7i76u

Category: Basic Configuration

Looks like you set the number of sserial ports to 0, disabling the 7I76 field I/O  


 
  • tommylight
  • tommylight's Avatar
13 May 2025 23:16
Replied by tommylight on topic LinuxCNC compatible industrial PC

LinuxCNC compatible industrial PC

Category: Computers and Hardware

In Linux you can always check temperatures with
sensors
in a terminal, it will show something like this
cnc@512NVME:~$ sensors
coretemp-isa-0000
Adapter: ISA adapter
Package id 0:  +38.0°C  (high = +80.0°C, crit = +100.0°C)
Core 0:        +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 4:        +31.0°C  (high = +80.0°C, crit = +100.0°C)
Core 8:        +27.0°C  (high = +80.0°C, crit = +100.0°C)
Core 12:       +31.0°C  (high = +80.0°C, crit = +100.0°C)
Core 16:       +32.0°C  (high = +80.0°C, crit = +100.0°C)
Core 20:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 28:       +32.0°C  (high = +80.0°C, crit = +100.0°C)
Core 29:       +32.0°C  (high = +80.0°C, crit = +100.0°C)
Core 30:       +32.0°C  (high = +80.0°C, crit = +100.0°C)
Core 31:       +32.0°C  (high = +80.0°C, crit = +100.0°C)

hidpp_battery_0-hid-3-3
Adapter: HID adapter
in0:           0.00 V  

acpitz-acpi-0
Adapter: ACPI interface
temp1:        +27.8°C  

amdgpu-pci-0300
Adapter: PCI adapter
vddgfx:      768.00 mV 
fan1:           0 RPM  (min =    0 RPM, max = 3000 RPM)
edge:         +41.0°C  (crit = +100.0°C, hyst = -273.1°C)
                       (emerg = +105.0°C)
junction:     +43.0°C  (crit = +110.0°C, hyst = -273.1°C)
                       (emerg = +115.0°C)
mem:          +44.0°C  (crit = +100.0°C, hyst = -273.1°C)
                       (emerg = +105.0°C)
PPT:          10.00 W  (cap = 219.00 W)

nvme-pci-0400
Adapter: PCI adapter
Composite:    +31.9°C  (low  = -273.1°C, high = +69.8°C)
                       (crit = +79.8°C)

cnc@512NVME:~$
  • dbtayl
  • dbtayl
13 May 2025 23:09
Replied by dbtayl on topic free CADCAM

free CADCAM

Category: CAD CAM

Slight correction: Apparently the FreeCAD-bundle repo is being phased out, weekly builds are moving to releases in the main repo: github.com/FreeCAD/FreeCAD/releases

And yes, stuff is regularly improving in FreeCAD.
  • dbtayl
  • dbtayl
13 May 2025 23:06
Replied by dbtayl on topic LinuxCNC compatible industrial PC

LinuxCNC compatible industrial PC

Category: Computers and Hardware

do not use inexpensive power supplies, not worth the headache they cause, the time wasted finding they are the problem, nor the damage they might cause, and some are danger to life by not being isolated from the mains.
 

Definitely this! Bad power supplies are a nightmare. Maybe they work OK. Maybe they just die early. Worse cases are fire/shock, impossible-to-diagnose issues, dying and taking your entire system with it, etc. Some of the cheap supplies are terrifyingly bad.

Years back I was working with Intel NUCs in an automotive application. They would have all sorts of strange behavior- crashes, reboots, stuttering, video artifacts, ...- when run off a cheap inverter. Apparently the inverter was sufficient to cause problems... after going through the 110Vac -> 19V DC adapter, and the internal 19Vdc -> 12/5/3.3/1.8Vdc converters.


Slightly more on topic, I've got a fanless Celeron PC like this one (looks like it at least, I don't have the exact model, but it's a J6412 chipset): www.amazon.com/HUNSN-Fanless-Industrial-...g/dp/B0CGLR51SL?th=1
 It's... fine. Jitter numbers are nothing special (~30000 ns IIRC), but I also haven't had any thermal issues with it. I admittedly haven't watched the CPU temperature directly to have hard data to back that up, and my shop space is stably at a relatively low temperature. I specifically wanted fanless so there was no place for dust, metal chips, etc. to ingress.

I suspect you can lock the CPU frequency at the lowest to keep temps down, though I haven't bothered.
  • SteepLearningCurve
  • SteepLearningCurve
13 May 2025 22:45
Replied by SteepLearningCurve on topic None of the axis are moving - using mesa 7i92t with 7i76u

None of the axis are moving - using mesa 7i92t with 7i76u

Category: Basic Configuration

Hi PCW

"When using pncconf you would setup the I/O on the 7i76 TB5 and TB6 tabs ..."

Ah, we must be looking at different software outcomes, because I have no TB5 and TB6 tabs :)

Maybe the menus are dynamically generated by the selected choices?

Attached are images of the two drop down choices that I have available

Which options should I be selecting (for a 7i92t with a 7i76u directly attached)?

for board:  7i92-internal-data (is the one I was using (does it refer to the 7i92t? or the 7i76u? )
for firmware: I have tried the first two, and the last one
None of them generated any TB5 and TB6 tabs.
 
  • Hakan
  • Hakan
13 May 2025 21:55
Replied by Hakan on topic LinuxCNC S-Curve Accelerations

LinuxCNC S-Curve Accelerations

Category: General LinuxCNC Questions

Nope won't work. Well one can't delete files but you can also not create new files or write to files during the build, so the build fails.
The right thing is to fix the build so this doesn't happen.
  • tommylight
  • tommylight's Avatar
13 May 2025 21:25
Replied by tommylight on topic LinuxCNC compatible industrial PC

LinuxCNC compatible industrial PC

Category: Computers and Hardware

Sorry, typo, fixing it now.
  • tommylight
  • tommylight's Avatar
13 May 2025 21:24
Replied by tommylight on topic Which kernel version is best for real time?

Which kernel version is best for real time?

Category: General LinuxCNC Questions

Yes that is the correct place to put it.
While testing this, no stress test, no glxgears, no video, no youtube.
  • PCW
  • PCW's Avatar
13 May 2025 21:09 - 13 May 2025 21:16
Replied by PCW on topic None of the axis are moving - using mesa 7i92t with 7i76u

None of the axis are moving - using mesa 7i92t with 7i76u

Category: Basic Configuration

You do not use the GPIO pins on P1 or P2, these are for communication with the 7I76

When using pncconf you would setup the I/O on the 7i76 TB5 and TB6 tabs and the hal file connections
would look like this:

# --- MIN-HOME-X ---
net min-home-x     <=  [HMOT](CARD0).7i76.0.0.input-13

# --- MIN-HOME-Y ---
net min-home-y     <=  [HMOT](CARD0).7i76.0.0.input-14

# --- MIN-HOME-Z ---
net min-home-z     <=  [HMOT](CARD0).7i76.0.0.input-15


7I76 Inputs 13,14,15 are TB6 pins 14,15,16  (7I76U manual page 9)

 
  • Murphy
  • Murphy
13 May 2025 20:32
Replied by Murphy on topic Remora - ethernet NVEM / EC300 / EC500 cnc board

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

That's interesting Cakeslob, this makes sense if it's to slow to react it would be like cutting the signal which it seems to be doing. There's something about changing it to PWM in Mach3 software and it uses a different pin.

If I can get the PWM signal direct and use an external PWM to Analog converter might work.
  • SteepLearningCurve
  • SteepLearningCurve
13 May 2025 20:02
Replied by SteepLearningCurve on topic None of the axis are moving - using mesa 7i92t with 7i76u

None of the axis are moving - using mesa 7i92t with 7i76u

Category: Basic Configuration

Hi All
Just to recap, as its been a week or two, I have one 7i92t and one 7i76u, and need currently need 4 axis XYYZ,  and 4 limit/home switch inputs.

Thank you , I did not know that P2 was the first connector by convention.  I have since connected the 7i76u straight to the P2 connector of the 7i92t (the genders do work fine). The config from before could not find the inputs (that it previously found) and it wouldn't run.  I figured the names are probably different, I fiddled about but didn't get it to work.
I tried again using pncconf this time.
The firmware I am using is called 7i92t_7i76x2d.bin,  and I am only entering info into the P2 tab.
I see in the manual of 7i76u (page5) that its P1 has the following
db25pin to gpio to direction
10  IO13  IN
11  IO14  IN
12  IO15 IN
13 IO16  IN
This maps to the manual of 7i92t connectors (page5) for P2 as
10  IO13
11 IO14
12 IO15
13 IO16
So seems like both go together fine in both db25 pins, and in IO names.
In the HAL file these pins are  ([HMOT] CARD0=hm2_7i92.0)
# external input signals

# --- MIN-HOME-X ---
net min-home-x     <=  [HMOT](CARD0).gpio.013.in

# --- MIN-HOME-Y ---
net min-home-y     <=  [HMOT](CARD0).gpio.014.in

# --- MIN-HOME-Y2 ---
net min-home-y2     <=  [HMOT](CARD0).gpio.015.in

# --- MAX-HOME-Z ---
net max-home-z     <=  [HMOT](CARD0).gpio.016.in
On the 7i76u the field inputs (0 through 15) are on TB6 
(I previously had input4, input5, input6, and input7 working, when using the incorrect P connector)
I changed the inputs this time.
Eventually,  my question ...
Where does gpio 13,14,15 and 16 pop out on TB6? (on the field io inputs)
is input13, on TB6 , is that IO13 ? therefore I wire my x home input into pin TB6 pin 14?
Apologies for the highlighting and scribble on the manual images (these are well read, just not well understood ... yet)



 
  • Hakan
  • Hakan
13 May 2025 20:01
Replied by Hakan on topic LinuxCNC S-Curve Accelerations

LinuxCNC S-Curve Accelerations

Category: General LinuxCNC Questions

Did that too hehe. All files gone. Luckily it was a new PC so I can redo it.
I mean do it one more time and delete all files again :)
It's the ./build_cmake_rm that is a bit aggressive.

This is the log of that command, it goes a bit further bit I only include up to the point where things go wrong.
Warning: Spoiler!
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