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  • Cant do this anymore bye all
  • Cant do this anymore bye all's Avatar
13 Nov 2024 01:15
Replied by Cant do this anymore bye all on topic Raspberry PI4, MESA 7I96S problems

Raspberry PI4, MESA 7I96S problems

Category: General LinuxCNC Questions

I was always under the impression that up to version 3 the ethernet was on the USB bus and 4 and after were on the PCIe bus.
  • bladekel
  • bladekel
12 Nov 2024 15:36 - 12 Nov 2024 15:39
How to connect hal pins to custom GUI? was created by bladekel

How to connect hal pins to custom GUI?

Category: Other User Interfaces

Hello to all.
I'm trying to build a custom GUI with pyqt5 for raspberryPi 5.
My linuxCNC version is 2.9.3, python version is 3.11.2.

I wanted to watch a input pin status whenever it changes.
I create a net in my hal file.
net somePin  hal_gpio.PIN33-in

After I created this net, I can see the pin and its changing logic from hal show with axis GUI.
I examined the qtplasmac_sim_handler.py and tried to make connections as on it.

Here is my custom GUI's handler file
def __init__(self, halcomp,widgets,paths):
    super().__init__()

    self.hal = halcomp self.somePinComp = self.hal.newpin('somePin', hal.HAL_BIT, hal.HAL_IN)
    self.somePinComp.value_changed.connect(lambda v: self.debugPrint("Changed"))

with this setup I cant see any changes. It only fires one time "Changed", and after that there is no information...

My guide qtplasmac_sim_handler.py did like I was...

What is my fault?
  • PCW
  • PCW's Avatar
12 Nov 2024 14:43
Replied by PCW on topic Raspberry PI4, MESA 7I96S problems

Raspberry PI4, MESA 7I96S problems

Category: General LinuxCNC Questions

Basically the issue is that the RPI4 Ethernet interface is connected via USB
and USB is not suited for real time.

For a RPI4 I would use a SPI interfaced device, The RPI5 (or most PCs) are fine with Ethernet
LinuxCNC motion controllers because their Ethernet hardware are not USB devices.
  • behai
  • behai
12 Nov 2024 13:10
Replied by behai on topic Raspberry PI4, MESA 7I96S problems

Raspberry PI4, MESA 7I96S problems

Category: General LinuxCNC Questions

No. It's an 3 axis mini milling machine, with three steppers. I use step-dir interfaces.
 

Hi This email address is being protected from spambots. You need JavaScript enabled to view it.,

Have you managed to get it to work, please? I am asking because I am thinking of trying out the same set up. I have a Raspberry Pi 4B with 8 GB and real-time kernel. I have not bought a MESA 7I96S yet. But I am planning too.

Thank you and best regards,

...behai.
  • JackRay
  • JackRay
11 Nov 2024 19:17
Replied by JackRay on topic Mesa 7i96s connected but inputs not working

Mesa 7i96s connected but inputs not working

Category: Driver Boards

hello ,
your video explains very well the basic connections and it's very welcome because at the beginning it's not easy to understand everything. I've just bought a 7i96s to replace my SV2 card (parallel port) mainly to add position feedback for my axes (encoders). The middle and end of travel connections for my 5 axes are operational and work very well with a Raspberry pi4. Where I'm having a lot of trouble is with the connections and signals from my encoder.
I want to connect the position feedback of my B axis to the only encoder port on the board.
My encoder is type A+,B+,0V,5Vdc . But I don't understand the documentation for the Mesa 7i96s board with TX/RX 422/485 ... I have no signal feedback in the halmeter.

Could you please guide me to the right connections and signals for my configuration? If attached the configuration of my B axis in my . Hal

---closedloop stepper signals---

net b-pos-cmd <= joint.3.motor-pos-cmd
net b-vel-cmd <= joint.3.vel-cmd
net b-output => [HMOT](CARD0).stepgen.03.velocity-cmd
#net b-pos-fb <= [HMOT](CARD0).stepgen.03.position-fb
net b-pos-fb => joint.3.motor-pos-fb
net b-enable <= joint.3.amp-enable-out
net b-enable => [HMOT](CARD0).stepgen.03.enable

# ---Encoder feedback signals/setup---

setp [HMOT](CARD0).encoder.00.counter-mode 0
setp [HMOT](CARD0).encoder.00.filter 1
setp [HMOT](CARD0).encoder.00.index-invert 0
setp [HMOT](CARD0).encoder.00.index-mask 0
setp [HMOT](CARD0).encoder.00.index-mask-invert 0
setp [HMOT](CARD0).encoder.00.scale [JOINT_3]ENCODER_SCALE

net b-pos-fb <= [HMOT](CARD0).encoder.00.position
net b-vel-fb <= [HMOT](CARD0).encoder.00.velocity
net b-pos-fb => joint.3.motor-pos-fb
net b-index-enable joint.3.index-enable <=> [HMOT](CARD0).encoder.00.index-enable
net b-pos-rawcounts <= [HMOT](CARD0).encoder.00.rawcounts


# ---setup home / limit switch signals---


net b-home-sw => joint.3.home-sw-in
net b-neg-limit => joint.3.neg-lim-sw-in
net b-pos-limit => joint.3.pos-lim-sw-in

Thank you very much
  • domse
  • domse
11 Nov 2024 18:23 - 11 Nov 2024 18:24
Linuxcnc crashing randomly when pressing buttons was created by domse

Linuxcnc crashing randomly when pressing buttons

Category: General LinuxCNC Questions

Hello, so this same problem occurs on on two different machines. One is an old core 2 duo pc + mesa 7i96 with monitor, keyboard, mouse. The other one is a raspberry pi 4 + 7i96s with a vnc connection (no monitor, no mouse, no keyboard) running a plasma machine.

Randomly the program crashes when navigating the gmocappy gui. it happens while jogging in small increments, when switching to program mode, when searching for a gcode file. I'd say the raspberry crashes more often than the pc. When i manage to start a gcode file, even if it is hours long, it is stable.

i attached a report below, this time the machine was homed and the y axis was moved in small increments when it crashed.

Report:
Warning: Spoiler!


Thank you 
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