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I purchased from pimeroni themselves.

SD cards are SLOW. The Pi5 feels snappy compared to the Pi4 and some older PC's but the NVME drive completely changes the game.

PS, SD cards have write speeds of something like 30mb/s and read of 90 mb/s. (varies greatly depending on SD card)

With my NVME (which is just a used laptop one that i got for $5) and the pimeroni hat, I get 432mb/s write and 735mb/s read.

What is the benefit of using an NVME drive as opposed to an SD card? I’m using an SD card in the boot up time is about five seconds or so.

The part you mentioned is on Mouser but not Digikey (Feb 21, 2024).

nz.mouser.com/c/?q=pimoroni%20nvme

Hi all.

Cant remember if i have said this, but, highly recommend fitting an NVME hat and drive to your pi (I went pimeroni, its a great bit of kit).

Absolutely the #1 best thing you could do to your Pi and its an absolute fail that they didn't provide it on the underside of the board by default- The 5 is fast enough to be severely limited by using an SD card.

I have had no issues with the display. I have been running a Micro HDMI (Pi end) to HDMI (full size HDMI, monitor end) and it is perfect. I have been playing a bit with the Dragon GUI FWIW.

If you or others want help with parts or ideas of pictures, let me know. I hope to work of getting the whole thing working within the next 2 weeks.

Hi RNZ,

Thanks for sharing your thoughts. A backup solution is not a bad idea.

I have pretty much the same reasons to go for the RPi5 route. I'm designing a system from ground up and can't picture to see a old desktop tower beside the machine. The electrical panel will also be the human interface with touchscreen. Minimal form factor is important.

I was skeptical on the early results with the RPi5 but your recent flawless experiments are very promising. By the time my machine is built, I'm now confident that any bugs will be fixed.

Do you have any issues with the display settings. I saw early posts says the resolution was stuck at 640x480.

Thanks!

I have had similar issues when trying EtherCAT on new Raspberry Pi 5 running faster servo threads.
You can try pcie ethernet card with intel chip and then change master device 0  MAC address and generic driver for igb/igc/e1000e or similar in ethercat.conf - depending on you ethernet controller driver. It might be an issue with onboard ethernet controller.
On my dell optiplexes onboard ethernet results in pings 0.300ms and pcie ethernet around 0.080ms, which makes a difference.

Hello everyone,

I am trying to setup and configure a 2-axis CNC dicing saw mill using a Raspberry Pi 4B 8GB board to run LinuxCNC. My goal is to use the GPIO pins to send step and directions signals to my stepper drivers. My issue is that I have little-to-no experience using LinuxCNC in general, and I have no idea how to use HAL to output signals to the board's GPIO pins. If anyone could help me through the process, or point me in the direction of where I could learn more of how to setup my machine, I would appreciate the help.

you don't need a cross over cable.

Hi ProcksMFG,

Regarding power supplies, I think you are correct about the amperage specs.

By observing the analog meter on my benchtop PSU, it would appear that the RPi 5 draws about 1-2 A depending upon what it is doing. I suspect the five amp spec is designed to allow for high current loads on the USB ports. Since I am not using those ports for anything other than keyboard/mouse wireless dongle, I chose to run from a compact Meanwell 5V/3A PSU that I bought from Mouser.com.

For my final design, I will add a 4,700 or 10,000 uF/ 6.3 V (or 10V or 16V) electrolytic across the 5 V rail (close to the Pi power input) because I have noticed that plugging in the Mesa card causes the Pi to reboot. The Pi evidently has very little on board power supply capacitance.

Hi ProcksMFG,

I finally had success with my RPi 5 + 7i96s, thanks to excellent support on this forum. I have documented it on this new thread.

forum.linuxcnc.org/9-installing-linuxcnc...th-mesa-7i96s#293645

Regarding your own potential plasma set up, here are a few of my thoughts (even if you didn’t ask for them, LOL, but it does help me clarify my own thinking)…

My current thinking is that I would definitely build a new set up based around the RPi 5 but with one fullback option.

The reasons I would go with the RPi 5 are (I) the minimal form factor which does not require an external bulky PC, (ii) simplicity due to The inbuilt Wi-Fi, and ethernet ports and potential wireless keyboard / mouse via usb dongle, (iii) rapid bootup time (a few seconds) and overall speed of the Pi 5, (iv) The general of availability and future upgrade paths within the Pi family (even if difficult to purchase in the recent past), (v) ease of swapping out the micro SD card to change operating systems, (vi) Staying mainstream, rather than opting for cheaper fringe systems that are not well supported and may not be around in the future.

There are probably other reasons, but I can’t remember what they are at the moment.

The fallback option that I mentioned might be relevant if for some reason my RPi based system started having issues… In that case, I could replace the Pi simply use an external LinuxCNC PC and change one ethernet cable from the Pi---7i96s to PC---7i96s.

If the green user LEDS on the 7I76E count up, the 7I76E is receiving packets
What error do you get from ping?

Rodw
Thank You for Your video, I saw him and one more with configuration network, but in this distribution isnt grafical network manager. Tomorrow I try again start with fresh system, but I need suggestion, what i wrong do.
In Your movie, after powered card, all the time four green leds flashing. In my card after powered green leds dont flashing.

Tommylight
I havn't idea, why i was thinking, that i need "crossover" cable. If problem is in "straight" cable, that isnt problem
I set mesa to 10.10.10.10, and rpi to 10.10.10.1, 10.10.10.2, 10.10.10.11, 10.10.10.100, many times, but I dont tried change cable for "straigth", ehhh..

I cant wait check it tomorrow,

Bartek
 

First cable is "cross" so not sure if it works, allthough it should with all new-ish PC as they all have automatic settings.
The second cable is useless for networking as it is not a standard pinout/wiring.
Try using a normal "straight" cable.
Also, when Mesa is set at default 192.168.1.121 your settings should work. But if you change Mesa to 10.10.10.10 you also have to set the RPI to 10.10.10.11 for it to work.
And as a general rule, do not mess with systcl, edit only the interface file.

I think you are chasing the wrong thing. ip6 has nothing to do with it
In this video about 16 minutes in, I explain networking and how to set this up with a mesa card

Hi Guys,
I have problem with configuration connection between raspberry pi 4b and mesa card's 7i76e.
I downloaded official LinuxCNC 2.9.2 "Raspberry Pi 4 OS based on Debian Bookworm" from linuxcnc.org/downloads/ , and after installation is version 2.9.1 (?).
First trying, I used standard setting jumper w3 (up), ip: 192.168.1.121 and I add contents to file /etc/network/interfaces:
auto eth0
iface eth0 inet static
address 192.168.1.1
netmask 255.255.255.0
hardware-irq-coalesce-rx-usecs 0

but every time I have problem with ping 7i76e.
Configuration ifconfig -a showed inet6 , so I was thinking about problem with active ipv6. Next I tried disable ipv6, but after reboot ipv6 was active. (ipv6 is enabled by kernel). So - I added ipv6 to kernel blacklist. All the time i cant pinging mesa card. I change setting for ip 10.10.10.10, jumper, and the same situation. I use two ethernet cable, with configuration:
1-3   and   1-3
2-6             2-6
3-1             3-1
4-4             4-7
5-5             5-8
6-2             6-2
7-7             7-4
8-8             8-5
When I ping 7i76e 4 green leds are flashing with 1Hz frequency with binary code, but is mistake connection.
I used many different configuration, but every time is the same effect.
I havent more ideas. Tomorrow I try used fresh system again...
Somebody has any idea?

Bartek