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  • royka
  • royka
25 Nov 2024 13:50 - 25 Nov 2024 14:03
Replied by royka on topic Real-Time Kernel with Orange Pi 4 LTS

Real-Time Kernel with Orange Pi 4 LTS

Category: General LinuxCNC Questions

Weird that spidev doesn't show up, I think that the overlay is not complete, since it worked (or at least visible) before you could try to add the overlay files of the other boards to see if it helps.

The (gpu?) lag is probably because all the small cores are isolated now, you can try to see if the latency is still low enough with less cores isolated, isolcpus=3-5, isolcpus=4,5 or isolcpus=5. The first 2 cores are faster, so ideally you would isolate the second core, but then I think it should be changed in the source of LinuxCNC to run on that core instead of the last core, but 31.8us is certainly not bad
So you can try the following config:
verbosity=1
bootlogo=true
console=both
fdtfile=rockchip/rk3399-orangepi-4-lts.dtb
rootdev=UUID=a703d82e-8d61-4266-8b54-c10361d608ca
rootfstype=ext4
extraargs=isolcpus=4,5
overlay_prefix=rockchip
overlays=rk3399-opp-2ghz rk3328-spi-spidev rk3399-spi-spidev rk3399-uhs  rk3568-hk-spi-spidev
usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u
  • tommylight
  • tommylight's Avatar
25 Nov 2024 12:57
Replied by tommylight on topic Weiler DZ26 Millturn Conversion

Weiler DZ26 Millturn Conversion

Category: Turning

Where did you read about Ethernet compromising performance?
Mesa has no such issues, they can do easily MHz range pulses, KHz servo rates (i have tested at 4 KHz 5i25, 6i25 and 7i92).
I have several industrial machines using Mesa, in use daily for many years. Retrofit and build logs are on this forum and youtube, but my videos are cr@p compared to RotarySMP's.
  • MacKaye
  • MacKaye
25 Nov 2024 12:37
Replied by MacKaye on topic Weiler DZ26 Millturn Conversion

Weiler DZ26 Millturn Conversion

Category: Turning

Ah, i´ve been watching your stuff for a while to get a sense for what i am getting into, nice content!
You are using a pretty elaborate control interface on your Schaublin. I am not sure if i want to go down that route though. All i need is some jogging control to set offsets, tool measurements, start stop and feed override. My idea is using a USB pendant, a footswitch for my chuck and everything else on a touchscreen.
For years i have done nothing but adjust tool offsets on the control itself, everything else is straight from cam. And for jogging a pendant doesn´t need to be real time control via the FPGA in my mind.
Or am i totally wrong about LinuxCNCs control interface?
  • Hakan
  • Hakan
25 Nov 2024 12:19 - 25 Nov 2024 12:21

Minipc standalone ethercat vs Minipc and mesa card ?

Category: General LinuxCNC Questions

Regarding max step rate: that potential bottleneck is eliminated with Ethercat, there are no pulse/direction signals. Instead a new target position is give over EtherCAT to the driver.
I think the two technologies complement each other. If you have/want to use traditional drives with pulse/direction or analog voltage control you go with Mesa. If you want to invest in a field bus system with drives and other units, you go with EtherCAT.
  • Hossein74Majidi
  • Hossein74Majidi
25 Nov 2024 12:12
G Code Editor In Qt Designer was created by Hossein74Majidi

G Code Editor In Qt Designer

Category: Qtvcp

Hi
In Qt Designer, how can I edit an entered g code using the qt widgets??
  • Thayloreing
  • Thayloreing
25 Nov 2024 11:01
Replied by Thayloreing on topic Remora - ethernet NVEM / EC300 / EC500 cnc board

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

Good morning guys, I bought my nvem v5 board to test with linuxcnc, I'm still waiting, I saw in the files that there is an encoder component to compile in linuxcnc to use in remora, this component was created to only accept the mpg encoder or is there a possibility of using the mpg input to connect an encoder to a spindle or the spindle shaft of a lathe, I don't know if it is possible to use just the mpg encoder input or there is a way to use other inputs if configured, could you give me more details of this part of the encoder on the nvem board? thank you in advance thank you very much
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