#linuxcnc Logs

Jul 18 2019

#linuxcnc Calendar

02:24 AM Deejay: moin
03:26 AM likevinyl is now known as Guest84515
05:03 AM jthornton: morning
05:17 AM Tom_L: morning
05:17 AM XXCoder: mooringh
05:20 AM pink_vampire: for me it is late soldering night
05:20 AM pink_vampire: https://imgur.com/a/0Mv4qQR 2 out of 30
05:20 AM pink_vampire: this is lvds cable
05:24 AM pink_vampire: I took one pair from a cat 6 ethernet cable, put it on the drill and twist it even more, so it will look similar to the twist in the lvds wires
05:24 AM pink_vampire: do you think it will work?
05:27 AM XXCoder: whats you trying to do?
06:51 AM miss0r: you know that iffy feeling, when you find that your computer is locked up and you have to reboot it.. booting it up icons are moving around and the task bar is swapping from top to bottom....
06:52 AM * miss0r is running all sorts of anti mal/vira/intruder stuff at the moment
06:57 AM Elmo40: people still get virusessses?
06:59 AM miss0r: not sure, though. It might just be the computer getting old. that coubled with a mouse that more often than not does a double click when it is not supposed to :)
07:00 AM miss0r: I can't recall the last time I had a virus. But there might be the off chance that someone managed to gain access to the PC somehow. Which would also be odd, since I run a pretty beefy firewall between my internet router(a huwaei(spell)) which is chinese, and I don't trust it - so I added my own ZyWall in between...
07:00 AM miss0r: but stuff have happened before on much more secure networks
07:02 AM miss0r: doing internet search for a used shaper... If theres one place you can catch a 'cold' it would be doing that :D
07:07 AM skunkworks: windows 95/98 did that all the time on a crash.. (atleast the icons)
07:12 AM miss0r: This is a windows 7... it would seem it can do that as well
07:12 AM miss0r: But it was realy do for a reboot.. It must've been running for months
07:25 AM Loetmichel: soo, jsut got a call from the car mechanic: the things he did yesterday (thermostat change, excessive exhaust welding, new parking brake pads+ the cables derustet and the atuoadjuster is moving again, new main brake hoses, new wear indicators new) on my BMW 525i E39: €730.00 And he estimates another €150 for the broken read right shock when he gets a used one of ebay... i LIKE that
07:25 AM Loetmichel: mechanic. really cheap but good quality ,)
07:28 AM miss0r: Seriously! I can't locate a metal shaper anywhere in Denmark.. (for sale that is)
07:29 AM miss0r: I spoke to 5 seprate machine tool resellers already, Most of them haven't seen one for months, and the ones that come in are sold off to india or china the second they get their hands on them
08:58 AM JT-Shop2: yippie the 4 wheel drive works now!
09:15 AM FinboySlick: JT-Shop2: Time to go play in the mud!
09:40 AM JT-Shop2: that's one thing we have plenty of with all the rain in the last 6 months
09:44 AM miss0r: JT-Shop2: Had you only lived closer i'd come over'n borrow some mud for driving the LR
09:47 AM JT-Shop2: you mean it does not float?
09:49 AM miss0r: hehe.. that bad, ha?
09:52 AM JT-Shop2: yea got more than 5" monday and tuesday rain gauge was full when we got back and 2" last night
09:52 AM JT-Shop2: and rusty is all back together now!
10:28 AM adamj12b: pcw_mesa Would the 7C81 raspberry pi board be capable of interfacing to a 7i77 analog servo board? Looking through the manual, it appears that the current firmware only support basic DB25 BOBs. This board is very interesting with the new RP4's processing power.
10:33 AM Tom_L: JT-Shop, since you have some free time now...
10:33 AM jthornton: lol
10:38 AM CaptHindsight: adamj12b: if you use the Rpi4's integrated Ethernet, then you should be able to use the Mesa Ethernet FPGA's and the 7i77
10:43 AM CaptHindsight: adamj12b: from the 7C81 manual " Three 26 pin header connectors with standard parallel port pinouts are provided for
10:43 AM CaptHindsight: compatibility with most parallel port interfaced motion control / CNC breakout cards/ multi
10:43 AM CaptHindsight: axis step motor drives, including Mesa's 25 pin breakout boards.
10:43 AM CaptHindsight: Mesa's 25 pin daughtercards or standard parallel port breakout boards allow almost
10:43 AM CaptHindsight: unlimited I/O options including quadrature or absolute encoder inputs, step/dir (to 10 MHz)
10:43 AM CaptHindsight: or PWM/dir outputs, and field I/O expansion to hundreds of I/O points."
10:53 AM pcw_home: adamj12b yes, the 7C81 can support a 7I77 or 2
10:56 AM jym: morning folks
10:58 AM CaptHindsight: jym: what did you bring us today?
10:59 AM jym: CaptHindsight: pork verde
11:01 AM CaptHindsight: raining cats and dogs here
11:09 AM adamj12b: pcw_home Thank You. Ill go ahead and order one!
11:11 AM adamj12b: CaptHindsight I saw that in the manual, but cant find reference to the fimware files for the 7i77. thats why I was curious. Also the hardware Ethernet on the rp4 opens options like the 7i92 and 7i77 which ive been wanting to try but I need to replace the PC on my machine anyways and the RP4 and 7c81 seems like a great solution.
11:22 AM esch: holy hell sending three characters via ethernet is a pain in the ass in logix
11:48 AM cerna: Than RPI4 and Mesa 7I92 with LinuxCNC, it is probably more viable MKSOCFPGA on ZYNQ or Cyclone V SOC with Machinekit.
12:06 PM pcw_home: adam12b: note that on RPI you will likely have to install LinuxCNC from source or even build the kernel yourself...
12:08 PM pcw_home: Also not sure yet if hm2_rpspi works with the RPI4
12:17 PM JT-Shop: pcw_home: how does the 7c81 connect to the rpi?
12:19 PM adamj12b: pcw_home install from source and build the kernel doesn't scare me. Ive done it before for my plasma table and dev system. I will probably start with the rpi 3b+ i currently have and then move to the rpi4.
12:19 PM miss0r: bah. Any of you guys know of a shaper for sale somewhere in europe? preferable somewhere between 6-10" stroke
12:20 PM miss0r: apparently all the ones that were in Denmark at some point were sold off to the far east
12:21 PM pcw_home: JT-Shop: SPI from the GPIO header on the RPI
12:22 PM JT-Shop: so the 7c81 only uses the SPI pins from the rpi?
12:23 PM adamj12b: cerna care to elaborate on these ? (MKSOCFPGA on ZYNQ or Cyclone V SOC) I have heard machinekit does well on the rpi but these other terms are new to me.
12:31 PM gloops: not many shapers showing on ebay here atm https://www.ebay.co.uk/itm/Metal-shaping-machine/264400100847?
12:34 PM gloops: https://www.facebook.com/marketplace/item/191227198439388/
12:34 PM gloops: be ok if you could get your boat round scotland
12:41 PM pcw_home: "JT-Shop: so the 7c81 only uses the SPI pins from the rpi?" Yes, but it connects to all so it should be possible for example to route the RPI's serial port to one of the 7C81s RS-485 interfaces (for MODBUS etc)
12:42 PM JT-Shop: ah cool
12:52 PM cerna: adamj12b: Xylinx and Intel both produce so-called System-on-Chip, which is FPGA core coupled with hard ARM core. Xylinx call it ZYNQ, Intel/Altera Cyclone V SoC. One of the Machinekit guys took the open-source Mesa firmware and created project which program the FPGA side as a 5i25 Mesa card. The ARM side is then used for the Linux.
12:53 PM cerna: Blazini36 describes his woes on LinuxCNC forum: https://forum.linuxcnc.org/27-driver-boards/36923-sserial-hardware-implementation
12:54 PM cerna: Github repository of the project: https://github.com/machinekit/mksocfpga
12:55 PM cerna: You can use it with 100 USD development board from Terasic.
12:55 PM cerna: https://www.terasic.com.tw/cgi-bin/page/archive.pl?Language=English&No=1046
12:58 PM adamj12b: cerna Thank You!
01:00 PM cerna: With this https://oshpark.com/shared_projects/ZSjsiCUd it can be connected directly to any PP Mesa card.
01:01 PM cerna: Or something like it. I don't know how DE0-Nano and DE10-nano differs.
01:02 PM cerna: adamj12b: You're welcome.
01:05 PM adamj12b: In your opinion, what would handle a 7i77 in closed loop better? the pi or this route? or is it basically the same?
01:11 PM cerna: Truth is, I am little biased against SBCs for this kind of application. I don't think that there will be much difference. On this you could use excessive FPGA cell for other things, as it is big enought. And maybe it is little bit cheaper. But in the end, if (!) Pi4 will work on ethernet, I don't think it would matter.
01:12 PM cerna: *enough
01:19 PM cerna: But it is all-in-one solution. Without the ethernet.
01:19 PM cerna: So minus one possible source of problems.
01:21 PM cerna: And the availability of Terasic board is better than Mesa hardware. (I had to import mine directly from USA. Which was not completely easy or cheap.)
02:50 PM perry_j1987: so hot
02:54 PM Tom_L: is that for sure
03:02 PM perry_j1987: who wants to stop by and clean up this place for me
03:03 PM perry_j1987: no takers? :P
03:06 PM perry_j1987: just tuned into project egress assembling and they are duct taping everything heh
03:09 PM XXCoder: are you sure they are engineers? heh
03:10 PM perry_j1987: unsure if they were repairing or possibly gluing parts into fixed position
03:11 PM perry_j1987: i watched bunch of the maker videos of the parts
03:11 PM perry_j1987: that pump handle nyccnc did looks real nice
03:14 PM * JT-Shop2 just changed 20 T8's in the big shop... one more but not sure I want to move all the crap to get to it
03:14 PM perry_j1987: scaffold that spans the junk JT-Shop :)
03:16 PM JT-Shop2: I have some scaffolds but they don't have much clearance under
03:20 PM Tom_L: ur not supposed to fill it with crap until you're done building!
03:20 PM Rab: I'm getting sick of changing HO T8s every year, even though the light can't be beat. About ready to switch to LED tubes.
03:20 PM Tom_L: unless you need job security
03:21 PM JT-Shop2: I have 1/2 of the fixtures in this shop on LED now, fixing to change the rest
03:23 PM perry_j1987: i got led lights in my place
03:23 PM perry_j1987: its real nice
03:23 PM Tom_L: JT-Shop did you get tubes or led fixtures
03:23 PM Rab: I have these in my shipping container, very bright: https://www.ledmyplace.com/products/t8-8ft-v-shape-led-tube-60w-integrated-5000k-frosted
03:24 PM Rab: They're the best light output for the dollar I've found. Two of my friends have put them up in their shops, no failures yet.
03:24 PM XXCoder: pretty cheap
03:24 PM Rab: But I wish they came in a 4000K version, the 5000K is pretty stark.
03:25 PM XXCoder: any warm ones?
03:25 PM XXCoder: you could mix cold and warm to average it
03:26 PM Rab: 5000K is the warmest version they have. I think the main market is display coolers.
03:27 PM JT-Shop2: 6000k tubes
03:36 PM Tom_L: so you're gettin rain there today?
03:37 PM Tom_L: mm last night..
03:38 PM Tom_L: i think it would turn to steam before it landed here
03:52 PM XXCoder: think summer will finally come here now
03:52 PM XXCoder: trending up to 78f
04:18 PM Deejay: gn8
04:36 PM JT-Shop: wow Andy got LinuxCNC working on the RPi4
04:38 PM Tom_L: that's cool
04:48 PM andypugh: Hakan did it first
04:54 PM Tom_L: andypugh you better make a nice shiney case for it now with chips engraved on the top
04:54 PM andypugh: Did you see my other RpI case?
04:55 PM Tom_L: yeah with the fancy hole pattern
04:55 PM Tom_L: did the new one come with board dimensions?
04:56 PM andypugh: Pi4? Not that I noticed.
05:01 PM Tom_L: https://www.raspberrypi.org/documentation/hardware/raspberrypi/mechanical/rpi_MECH_4b_4p0.pdf
05:02 PM Tom_L: now it's just a matter of time...
05:03 PM andypugh: I made my case based on a 3D model (of the whole Pi) from thingiverse.
05:03 PM andypugh: An impressive bit of work, all in colour.
05:05 PM andypugh: Ah, no, it was GrabCAD: https://grabcad.com/library/raspberry-pi-3-b-1
05:05 PM andypugh: An amazing bit of work
05:07 PM Tom_L: i don't have one or i'd model it in catia
05:08 PM andypugh: You just showed me the drawing....
05:08 PM Tom_L: doesn't give the connector heights etc
05:09 PM Tom_L: i'd likely allow 1mm per side for those
05:09 PM Tom_L: maybe a shade under that
05:09 PM andypugh: (Actually, that might be enough, steal the components from the Pi3 model (its made as an assembly, every resistor is a part) and re-arrange to Pi4 dimensions.
05:09 PM Tom_L: any new IO on it?
05:10 PM Tom_L: are the plugs physically the same?
05:10 PM andypugh: Dunno :-)
05:11 PM Tom_L: you could likely find 3d files for those connectors if you wanted to go to the trouble
05:11 PM Tom_L: then make an assembly from it
05:12 PM Tom_L: i won't have time to play for a while. still recovering from this water mess
05:13 PM andypugh: As I said, the file I linked to has all the connectors and components as parts.
05:13 PM Tom_L: the grabcad one?
05:13 PM Tom_L: are they the same from Pi3 to Pi4?
05:16 PM andypugh: Probably
05:16 PM andypugh: Micro-HDMI won’t be in the Pi3 model, of course
05:18 PM Tom_L: i don't see the individual components unless i missed another link
05:24 PM JT-Shop: rpi4 is larger than the rpi3?
05:27 PM Tom_L: i don't know
05:27 PM Tom_L: i don't have either one
05:34 PM andypugh: No, exactly the same size.
05:34 PM Tom_L: hole locations as well?
05:48 PM jthornton: that's what they say it drops right in to a rpi3 case
05:48 PM jthornton: https://www.okdo.com/us/shop/raspberry-pi/other-accessories/99130100-pi-sbcs/raspberry-pi-4-model-b-board-with-4gb-lpddr4-sdram-board-only/?src=raspberrypi
05:48 PM jthornton: never heard of them before
05:59 PM jthornton: the rpi zero has a micro hdmi plug
06:01 PM pcw_mesa: RPI4 has 2X micro HDMI
06:04 PM JT-Shop: I only found one place that has the 4GB rpi4
06:10 PM skunkworks: isnt there some issue with the usb charging?
06:11 PM skunkworks: on the rpi4
06:16 PM skunkworks: eh - seems like a non-issue
06:16 PM skunkworks: https://www.techspot.com/news/80867-design-flaw-prevents-raspberry-pi-4-working-all.html
06:20 PM jthornton: yea just use the rpi power supply and not a smart charger
06:20 PM methods_: just use a cheap usbc cable
06:21 PM methods_: without a chip in it
06:35 PM jthornton: seems I've lost sudo on this pc
06:35 PM jthornton: sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set
06:36 PM andypugh: wierd
06:36 PM jthornton: su
06:36 PM jthornton: Password:
06:36 PM jthornton: setgid: Operation not permitted
06:36 PM jthornton: I shut down to add a third hard drive and now it's broken
06:43 PM Tom_L: what if you remove that drive?
06:44 PM jthornton: looks like /usr/bin/sudo has the wrong owner... me and not root
06:46 PM jthornton: I'm installing debian 10 so it's not worth putzing with, I'll just copy all my stuff from here to the nas
06:47 PM jthornton: but that thought has crossed my mind being that the drive was once in my nas...
06:50 PM jthornton: no, it's still hosed
06:59 PM skunkworks: first world problem... ;)
06:59 PM skunkworks: http://electronicsam.com/images/greenmachine/IMG_20190718_184807.jpg
07:00 PM skunkworks: Still glad I raised Z 5 inches...
07:00 PM skunkworks: Time to machine i fixture plate..
07:02 PM jthornton: not sure what I'm looking at...
07:02 PM skunkworks: That is as far down z goes.
07:03 PM jthornton: ah I see now, can't gouge up the table lol
07:06 PM jthornton: wow all kinds of stuff is broken on this pc now wtf
07:08 PM skunkworks: this probably shows it better
07:08 PM skunkworks: http://electronicsam.com/images/greenmachine/IMG_20190718_190037.jpg
07:41 PM CaptHindsight: andypugh: does the Rpi4 work well over Ethernet?
08:22 PM Tom_L: andypugh i just noticed that drawing gives Z values for those components
08:23 PM Tom_L: are they all above the board?
09:43 PM jym: CaptHindsight: what was the color picker you linked one time?
10:04 PM CaptHindsight: jym: don't recall
10:04 PM jym: CaptHindsight: bummer, it was nice
10:05 PM CaptHindsight: color picker
10:05 PM CaptHindsight: was it a table that translated between different color spaces?
10:07 PM CaptHindsight: https://www.rapidtables.com/convert/color/rgb-to-cmyk.html
10:15 PM jym: CaptHindsight: that wasn't it, bummer
10:16 PM jym: I'll look thru history later
10:16 PM jym: but thankss
10:32 PM perry_j1987: evening guys