[Emc-users] Carving a spiral
A friend and I have been discussing exactly how to write the G-Code to create a spiral scroll. His rotary table 90:1 reduction with a 1600 micro-step motor could be set up to move N steps for each step of the X axis to create the spiral. But that approach seems clumsy. Say I wanted to cut a scroll with a 6mm pitch using a 3mm cutter. Without using G2 or G3 it's really just a triangle isn't it? Move rotary table distance A and move X axis distance A'. Do it in small enough increments and you get a spiral. But I feel like I'm missing something really simple. Suggestions? Thanks John ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Raspberry Pi5
Thanks for that link. John > -Original Message- > From: Eric Keller [mailto:keller...@gmail.com] > Sent: April 9, 2024 11:31 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Raspberry Pi5 > > If I was starting a new project and needed the space saving of a Pi, I > would get a Pi5. There is a long thread on the forum about making it > work. > https://forum.linuxcnc.org/9-installing-linuxcnc/50203-linuxcnc-on- > raspberry-pi-5 > Eric Keller > Boalsburg Pennsylvania > > On Tue, Apr 9, 2024 at 12:50�PM John Dammeyer > wrote: > > > > Hi all, > > > > Will the Pi5 be any better for LinuxCNC than the Pi4 with a MESA Ethernet > > Controller or is the Pi4 already more than what LinuxCNC requires? > > > > John > > > > > > ___ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Raspberry Pi5
On 4/9/24 13:57, John Dammeyer wrote: The Pi5 comes with dual band WiFi so external access is probably possible. I'm using an older PC with 7i92H. Playing on the lab bench with a Pi4 and 7i82H, LCD touch screen etc. The problems I've run into are more along the lines of user interface with respect to the smaller touch screen. In the long run likely a bad purchase. There are 42 other projects in front of this one at the moment but I thought I'd ask. John The pi has a micro hdmi for video, and any old 1920x1040 monitor just works. So video is not a problem here. I have all machine power controlled by a pair of 60 amp 600 volt SSR's controlled by linuxcnc's F2 key, so the pi is not equipt with a power switch. Uptimes are power failure to power failure, so pi & monitor are around 22 watts when linuxcnc is not running. Rod Webster can supply sd card images for bookworm. Latency is not as good, but plenty adequate to run my lathe well. Currently running with 3 phase closed loop steppers on 45 volt power supplies, no PID's. They do EXACTLY as the TP tells them to or can shut linuxcnc down with the e-stop in a millisecond. Tested well, has never occurred while actually running a job. Whats not to love? -Original Message- From: gene heskett [mailto:ghesk...@shentel.net] Sent: April 9, 2024 10:30 AM To: emc-users@lists.sourceforge.net Subject: Re: [Emc-users] Raspberry Pi5 On 4/9/24 12:50, John Dammeyer wrote: Hi all, Will the Pi5 be any better for LinuxCNC than the Pi4 with a MESA Ethernet Controller or is the Pi4 already more than what LinuxCNC requires? John I am running a late 1940's Sheldon 11x54 first with an rpi3b, but its tongue was dragging on the floor, and I've not seen any evidence of that since switching to an rpi4b not long after it came out. I did put many of the "manual functions" in a separate 200 hz thread while it was still running of the 3b, and have not taken any of it out since swapping in the rpi4. My .hal file is available, just ask, for a 7i90HD & a triplet of 7i42TA's to anyone who asks. It uses a Spinx1 to talk to the vfd. This leaves the ethernet free to tend to the usual network stuff. Like updating the os or even browsing you-tube. ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users . Cheers, Gene Heskett, CET. -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users . Cheers, Gene Heskett, CET. -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Raspberry Pi5
If I was starting a new project and needed the space saving of a Pi, I would get a Pi5. There is a long thread on the forum about making it work. https://forum.linuxcnc.org/9-installing-linuxcnc/50203-linuxcnc-on-raspberry-pi-5 Eric Keller Boalsburg Pennsylvania On Tue, Apr 9, 2024 at 12:50 PM John Dammeyer wrote: > > Hi all, > > Will the Pi5 be any better for LinuxCNC than the Pi4 with a MESA Ethernet > Controller or is the Pi4 already more than what LinuxCNC requires? > > John > > > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Raspberry Pi5
The Pi5 comes with dual band WiFi so external access is probably possible. I'm using an older PC with 7i92H. Playing on the lab bench with a Pi4 and 7i82H, LCD touch screen etc. The problems I've run into are more along the lines of user interface with respect to the smaller touch screen. In the long run likely a bad purchase. There are 42 other projects in front of this one at the moment but I thought I'd ask. John > -Original Message- > From: gene heskett [mailto:ghesk...@shentel.net] > Sent: April 9, 2024 10:30 AM > To: emc-users@lists.sourceforge.net > Subject: Re: [Emc-users] Raspberry Pi5 > > On 4/9/24 12:50, John Dammeyer wrote: > > Hi all, > > > > Will the Pi5 be any better for LinuxCNC than the Pi4 with a MESA Ethernet > > Controller or is the Pi4 already more than what LinuxCNC requires? > > > > John > I am running a late 1940's Sheldon 11x54 first with an rpi3b, but its > tongue was dragging on the floor, and I've not seen any evidence of that > since switching to an rpi4b not long after it came out. > > I did put many of the "manual functions" in a separate 200 hz thread > while it was still running of the 3b, and have not taken any of it out > since swapping in the rpi4. My .hal file is available, just ask, for a > 7i90HD & a triplet of 7i42TA's to anyone who asks. It uses a Spinx1 to > talk to the vfd. This leaves the ethernet free to tend to the usual > network stuff. Like updating the os or even browsing you-tube. > > > > > > ___ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > . > > Cheers, Gene Heskett, CET. > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author, 1940) > If we desire respect for the law, we must first make the law respectable. > - Louis D. Brandeis > > > > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Raspberry Pi5
I have had good luck with the 4 but haven't updated it recently.. It seems maybe to be on the edge graphics wise - I would think the 5 would be perfect.. (if the latency is good) On Tue, Apr 9, 2024 at 12:35 PM gene heskett wrote: > On 4/9/24 12:50, John Dammeyer wrote: > > Hi all, > > > > Will the Pi5 be any better for LinuxCNC than the Pi4 with a MESA > Ethernet > > Controller or is the Pi4 already more than what LinuxCNC requires? > > > > John > I am running a late 1940's Sheldon 11x54 first with an rpi3b, but its > tongue was dragging on the floor, and I've not seen any evidence of that > since switching to an rpi4b not long after it came out. > > I did put many of the "manual functions" in a separate 200 hz thread > while it was still running of the 3b, and have not taken any of it out > since swapping in the rpi4. My .hal file is available, just ask, for a > 7i90HD & a triplet of 7i42TA's to anyone who asks. It uses a Spinx1 to > talk to the vfd. This leaves the ethernet free to tend to the usual > network stuff. Like updating the os or even browsing you-tube. > > > > > > ___ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > . > > Cheers, Gene Heskett, CET. > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author, 1940) > If we desire respect for the law, we must first make the law respectable. > - Louis D. Brandeis > > > > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Raspberry Pi5
The Pi5 has the advantage over a Pi4 of not only a faster CPU but the real step up over the Pi4 is that you can install the file system on a M2 SSD and not have to run off the SD card. But if you look at the price, you get more for the same money if you buy a low-end Intel PC from a place like Newegg. They offer a refurbished Intel I5 with 4gb RAM and SSD for $95.This might seem like it costs $10 more than the Pi5 but the PC has a power supply, case, and cooling fan and the SSD is included too.So it is a bit cheaper than the Pi5. I think the Raspberry Pi is very good for my robotics projects that have to run off battery power and have very limited internal space for the control electronics. But if you are building a machine that runs off AC mains power and is not portable, why bother with a Raspberry Pi? The Pi4 or even Pi3 might be OK for driving the milling machine while it is cutting metal but you do other things like software updates, compiles, and visualizations. > On Apr 9, 2024, at 9:45 AM, John Dammeyer wrote: > > Hi all, > > Will the Pi5 be any better for LinuxCNC than the Pi4 with a MESA Ethernet > Controller or is the Pi4 already more than what LinuxCNC requires? > > John > > > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Raspberry Pi5
On 4/9/24 12:50, John Dammeyer wrote: Hi all, Will the Pi5 be any better for LinuxCNC than the Pi4 with a MESA Ethernet Controller or is the Pi4 already more than what LinuxCNC requires? John I am running a late 1940's Sheldon 11x54 first with an rpi3b, but its tongue was dragging on the floor, and I've not seen any evidence of that since switching to an rpi4b not long after it came out. I did put many of the "manual functions" in a separate 200 hz thread while it was still running of the 3b, and have not taken any of it out since swapping in the rpi4. My .hal file is available, just ask, for a 7i90HD & a triplet of 7i42TA's to anyone who asks. It uses a Spinx1 to talk to the vfd. This leaves the ethernet free to tend to the usual network stuff. Like updating the os or even browsing you-tube. ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users . Cheers, Gene Heskett, CET. -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Raspberry Pi5
Hi all, Will the Pi5 be any better for LinuxCNC than the Pi4 with a MESA Ethernet Controller or is the Pi4 already more than what LinuxCNC requires? John ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
