#linuxcnc Logs

Apr 04 2020

#linuxcnc Calendar

12:00 AM _unreal_: shutting down gpu is going to involve disabling opengl
12:05 AM _unreal_: most likely
12:05 AM adamj12b: ok. I will have to investigate how to find that info...
12:05 AM _unreal_: adamj12b, https://askubuntu.com/questions/1167943/how-to-install-the-latest-linux-kernel-mesa-intel-amd-gpu-drivers-and-xorg
12:05 AM _unreal_: https://synappsis.wordpress.com/2017/04/14/amdgpu-and-intel-graphic-drivers/
12:08 AM veegee: I'm practicing welding on some flat plate of hot rolled steel. What's the easiest way to clean up the plate and flatten it out again after covering it fully with weld beads?
12:08 AM _unreal_: ?
12:08 AM adamj12b: _unreal_ I think I have some info. Standby
12:08 AM _unreal_: flatten it?
12:08 AM _unreal_: veegee, a 4" grinder with a stone wheel?
12:08 AM veegee: Having trouble finding the right word
12:08 AM veegee: like essentially make it flat again so I can do another practice session
12:09 AM _unreal_: veegee, a 4" grinder with a stone wheel
12:09 AM veegee: you mean angle grinder?
12:09 AM adamj12b: _unreal_ https://photos.app.goo.gl/nqAskPgpn3rqFDT9A
12:10 AM veegee: And do you mean masonry wheel?
12:10 AM veegee: like a concrete surfacing wheel
12:10 AM veegee: _unreal_ like this? https://www.homedepot.ca/product/ridgid-4-inch-double-row-cup-wheel/1000828536
12:10 AM _unreal_: veegee, some times those wheels work
12:10 AM _unreal_: but the stone wheel is ideal
12:11 AM adamj12b: veegee Angle grinder is the best way. a flapwheel may work as well
12:11 AM veegee: I have a flap wheel, but it's soooo slow
12:11 AM veegee: Takes forever to resurface the steel plate
12:11 AM veegee: _unreal_ never heard of a stone wheel, can you link me to a picture or something?
12:11 AM adamj12b: https://www.homedepot.ca/product/forney-industries-grinding-wheel-metal-type-27-4-1-2-inch-x-1-4-inch-x-7-8-inch/1001204979
12:11 AM _unreal_: veegee, you wnat a stone wheel
12:12 AM adamj12b: are you just laying beads?
12:12 AM veegee: Oh just a regular type 27 grinding wheel
12:12 AM veegee: adamj12b yeah just straight beads on the surface of a small steel plate
12:12 AM veegee: just to practice getting it right
12:12 AM veegee: so i cover it with several rows of beads, then I have to resurface it to keep reusing the same steel plate
12:12 AM adamj12b: Just stack them. :)
12:12 AM _unreal_: veegee, https://www.harborfreight.com/4-1-2-half-inch-grinding-wheel-39677.html?ccdenc=eyJjb2RlIjoiOTUyMTcyNzAiLCJza3UiOiIzOTY3NyIsImlzIjoiMC45OSIsInByb2R1Y3RfaWQi%0D%0AOiI0NTQ5In0%3D%0D%0A&cid=paid_google|||39677&utm_source=google&utm_medium=cpc&utm_campaign=&utm_content=&gclid=CjwKCAjwvZv0BRA8EiwAD9T2VVPn0-ZIGoDiYWdk1fjCofCD10_z3TIe-EIIoWWx1BDUgymXfkQdKhoCh6gQAvD_BwE
12:13 AM veegee: adamj12b yeah I did that at first but it makes it harder to inspect your work after
12:13 AM adamj12b: what type of welding?
12:13 AM _unreal_: well 1am I'm going to bed
12:13 AM veegee: _unreal_ yeah that's just a regular type 27 grinding wheel.
12:13 AM _unreal_: talk t ya in the morning
12:13 AM veegee: But I thought those can only be used at an angle or on the ege
12:13 AM veegee: are they safe to use flat on their face?
12:13 AM _unreal_: veegee, regardless you need a grinding wheel kind of like that one
12:13 AM veegee: I have a bunch of those
12:13 AM adamj12b: _unreal_ thanks for the help
12:13 AM _unreal_: Thats a more or less flat one
12:14 AM _unreal_: your welcom
12:14 AM veegee: Didn't know you can safely use them that way without worrying about it exploding
12:14 AM _unreal_: veegee, you want one that is cupped a cup wheel stone wheel
12:14 AM veegee: yeah I have those
12:14 AM _unreal_: ok I'm head bobing
12:14 AM _unreal_: night
12:15 AM veegee: _unreal_ specifically this one: https://www.homedepot.ca/product/ridgid-4-inch-double-row-cup-wheel/1000828536
12:15 AM veegee: _unreal_ whoops I mean this one: https://www.dewalt.com/products/accessories/abrasives/bonded-abrasives/type-27-depressed-center-grinding-wheels/metal-grinding-wheels-type-27
12:15 AM veegee: The picture shows acceptable use on its edge or at an angle. I'm worried that it's not designed to be used flat on its face and explode
12:16 AM veegee: like using the side of a bench grinding wheel which you're not supposed to do
12:16 AM adamj12b: how big is this plate?
12:18 AM veegee: about 20cm x 10cm
12:24 AM veegee: 3/8" thick hot rolled
12:24 AM adamj12b: what type of welding/
12:24 AM veegee: stick welding with 6011 and 6013 electrodes
12:24 AM veegee: I'd just machine it with a big face mill but I don't want to drive to where my vertical mill is
12:24 AM veegee: I'm welding indoors in the office lol since no one is here
12:24 AM adamj12b: haha
12:24 AM veegee: but I have all my hand tools and bench grinder so I'm trying to find the fastest way to resurface it
12:24 AM veegee: I have those depressed centre angle grinder wheels too but again just worried that using them on their flat side is unsafe
12:24 AM adamj12b: so what ive done in the past was lay a bead every other bead distance apart. then go back and fill the voids.
12:24 AM adamj12b: then you can just kiss it with the grinder and keep laying beads over it. maybe 90 degrees different
12:24 AM XXCoder: theres finish stones that resurface your grindwheels
12:24 AM XXCoder: we have em at work
12:24 AM veegee: adamj12b yeah that's what I'm trying to do
12:24 AM XXCoder: just run it over and surface is nice again
12:24 AM veegee: ok so I see this guy is kinda using the depressed center wheel on its face: https://www.youtube.com/watch?v=HksmVoSOXQ0
12:24 AM veegee: so I guess it should be fine
12:24 AM veegee: and if I die now from an exploding wheel, it's a lot cooler than dying from COVID-19
12:24 AM XXCoder: yeah way too common, that
12:27 AM veegee: adamj12b know any resources that show what you should be aiming for in terms of how far to keep the electrode from the surface, bead width, how fast you should be moving, how the ideal bead should look?
12:29 AM adamj12b: What size electrode?
12:42 AM adamj12b: veegee I would practice with the 1/8". 125A or so. drag at a 15degree angle and keep your puddle width about 30% larger then the electrode. you want to be pretty close to the material, roughly the thickness of the electrode. travel at a speed that the ripples left behind are C shaped.
12:42 AM adamj12b: its ben a number of years since ive stick welded.
12:43 AM adamj12b: as for resources, Youtube. I like welding tips and tricks. They have a good podcast too.
12:51 AM veegee: adamj12b perfect, thanks. And by width of electrode, you mean the 1/8" itself right, not the actual diameter including the flux
12:51 AM adamj12b: correct
12:51 AM veegee: excellent, thank you!
12:51 AM adamj12b: Hope it helps!
12:52 AM adamj12b: if you have a hard time with the puddle spreading, turn the current down or move faster.
12:53 AM adamj12b: Alright. Im out. Good luck.
01:35 AM Deejay: moin
05:05 AM jthornton: morning
05:07 AM XXCoder: yo
05:09 AM jthornton: Missouri stay at home order starts Monday for 3 weeks
05:10 AM p0g0: Not a lot of US states without one at this point.
05:14 AM XXCoder: paywall https://www.nytimes.com/interactive/2020/us/coronavirus-stay-at-home-order.html
05:15 AM p0g0: OT & interesting: https://phys.org/news/2020-04-photocatalytic-optical-fibers-solar-fuel.html
05:18 AM jthornton: that's pretty cool
05:18 AM jthornton: https://www.oreillyauto.com/flux-capacitor?q=121g
05:18 AM p0g0: yep
05:22 AM XXCoder: interesting
05:26 AM XXCoder: so far 5 states just ignore
05:26 AM XXCoder: 4 states "specific cities or countries"
05:26 AM jthornton: Missouri didn't ignore it the gov let cities and counties handle it based on need
05:27 AM XXCoder: it shows as full lockdown now
05:28 AM XXCoder: west virginia is last state to find a virus case, but not last to do a lockdown interesting
05:29 AM p0g0: W. Va, Ky & Ark were all relatively low vs the surrounding states. Tn had 5x the rate of Ky, 7x the rate of mortality (no stay at home until a couple of days back).
05:31 AM jthornton: we have 14 cases in my county and the surrounding counties
05:32 AM p0g0: As an old guy in the "it'll probably kill you" category, I have been watching how the bad information & bad leadership has facilitated the transmission. As best I can tell the reported numbers are skewed low- all the folks I know that have had all the symptoms & illness have never been in anyone's stats.
05:33 AM XXCoder: p0 more and more younger guys is being killed by virus
05:33 AM p0g0: Kind of like China, unless you get tested and likely hospitalized, you are not a statistic.
05:33 AM p0g0: yes, I get that youth are in fact at dire risk too.
05:34 AM p0g0: But afaict, the >60 male is the highest risk group.
05:34 AM p0g0: >60 years old
05:36 AM XXCoder: yeah
05:36 AM XXCoder: im just 44 myself
05:36 AM XXCoder: just unfortunate to have lung issues lol
05:36 AM p0g0: You have the pre-existing condition issues
05:36 AM p0g0: yeah
05:37 AM p0g0: I saw that Canada has limited wood smoke to relieve lung irritation that predisposes one to infection- the US has chosen to walk away from EPA limits on air pollution, the exact opposite choice.
05:47 AM XXCoder: usa: yeah welcome to rugged capitalism
05:47 AM XXCoder: rich have excellent socialism support
05:47 AM XXCoder: they tried to have zero oversight on corprate loans
05:47 AM XXCoder: thankfully people fought against that
05:51 AM p0g0: XXCoder, you saw this: https://www.theguardian.com/us-news/2020/mar/30/trump-republican-party-voting-reform-coronavirus
05:51 AM XXCoder: reading
05:51 AM XXCoder: newsguard likes that site
05:52 AM XXCoder: i want ranked vote system
05:52 AM p0g0: The most honest statement about voter suppression and gerrymandering I've seen. The Guardian is an old bit of press, You can find the same story covered in a lot of US papers too.
06:41 AM XXCoder: yeah
06:41 AM XXCoder: amazing that people think that is good
06:41 AM XXCoder: aftering keeping them dems out even if we lose voting too
07:02 AM Tom_L: morning
08:30 AM pink_vampire: hi
08:38 AM Loetmichel: *sneeze*...*sneeze**sneeze*...*sneeze**sneeze**sneeze*...*sneeeeeeeeeeeeeeeeeeeze* hmpf. There is something in that potting dirt my wife bought that i am allergic to... reason why i wouldnt do any balkony plants if wife wouldnt force me to help :(
08:42 AM * _unreal_ is allergic to NOTHING. except for milk
08:47 AM * JavaBean may have a milk allergy, strangely enough tho has a coconut allergy
08:47 AM Loetmichel: i dont think mine is an allergy per se
08:48 AM Loetmichel: i dont have any probelm with swollen membranes or teary eyes. JUST continous explosve sneezing whenever i come near that particular dirt
08:48 AM Loetmichel: i think they have some very fine dust in it that itches my nose
08:49 AM JavaBean: makes you lucky. one of my favorite snacks is "gummy bears", and i can't tell you how many times i have discovered a brand has changed by noticing swelling
08:57 AM jymmmm: Loetmichel: pod people soil, they are coming to get you one sneeze at a time
09:13 AM _unreal_: most people are allergic to milk and dont know it
09:13 AM _unreal_: damn dirty dirt
09:13 AM _unreal_: Loetmichel, chance are some kind of dust mite type A or B?
09:14 AM Loetmichel: no idea. think more like some stuff to "fluff" the dirt up
09:15 AM Loetmichel: its only the kind of soil they sell as "light soil", the normal one doesent get me sneezing
09:15 AM _unreal_: could be a chemical, could be bio. My money is on something bio
09:15 AM _unreal_: wow royal caribbean has REALLY dropped in its stock value
09:16 AM _unreal_: from $135 to $20
09:16 AM Loetmichel: also the only real allergy i have and know of is one against certain painkillers. reason why i had all my teeth done so far without one ;)
09:16 AM _unreal_: I'm putting an other thousand in the bank today so I can transfer to my stocks
10:36 AM _unreal_: ok just ordered a PSU for my new putter
11:32 AM _unreal_: XXCoder, you live?
11:32 AM _unreal_: ? your always live what am I asking
11:38 AM Tom_L: what's up?
11:42 AM _unreal_: not much just toying with more ideas
11:42 AM _unreal_: I'm going to build a fiberglass shell for my monitor
11:43 AM _unreal_: going to make it tight to the overall dimentions of the monitor " 17" " lcd. and some space on one side for a few buttons
11:43 AM _unreal_: I have a VERY old ps2 touch pad I'm going to mount to the surface
11:44 AM _unreal_: https://www.circuitspecialists.com/ps2-touch-pad.html
11:45 AM _unreal_: omg it was product released in 1994
11:45 AM _unreal_: in 2k5 I first moved to florida
11:45 AM _unreal_: then had to move back to maine in the spring of 06
11:46 AM Rab: I think I had one of those, or something similar.
11:46 AM _unreal_: I used that touch pad to control a thinkpad c500 something like that. That I was using with pirated GPS software and a USB gps adapter to drive to FL.
11:47 AM _unreal_: hehe
11:48 AM _unreal_: Tom_L, I'm just trying to figure out what kinds of things I should put on that panel
11:50 AM _unreal_: ESTOP. trackpad, alarm light
11:50 AM _unreal_: My power box has a bunch of lights already in it for more or less everything :/
11:51 AM _unreal_: not my choice the holes and lights where part of the box I'm just reusing them
11:51 AM _unreal_: I dont know that I really need much in the way of manual control buttons
11:51 AM _unreal_: especially!
11:51 AM _unreal_: if I get that pendent going
11:53 AM _unreal_: That its self can be mounted and it has the built in magnets
11:54 AM Tom_L: https://www.cnccookbook.com/wp-content/uploads/2017/11/img_5a025c38f17bb.png
11:54 AM Tom_L: add an mpg
11:54 AM _unreal_: lol cant read anything on that. very low res image
11:55 AM * _unreal_ palm to face, I just said I plan on putting a mount for my MPG
11:55 AM _unreal_: I have the wireless pendent
11:56 AM _unreal_: whb04b-6
12:10 PM _unreal_: I could be foolish but I dont see the point of manual buttons to drive hardware that is all software controlled
12:11 PM _unreal_: aside from maybe the vacuum. That would likely be handy to have a manual override so I could just do a cleanup
12:12 PM Rab: Depends on the button function. It'd be handy to have a button to zero each axis', for example.
12:13 PM _unreal_: its on the pendent
12:13 PM Rab: Well then.
12:15 PM _unreal_: That and 10 macro options
12:15 PM _unreal_: I'm hard pressed to feel the need for a second set of function buttons
12:15 PM Tom_L: i use my pendant for setups alot
12:16 PM _unreal_: could be that I dont have a setup or have used a setup with these features
12:17 PM Tom_L: i just put basic functions on my pendant
12:18 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/pendant/pendant2.jpg
12:19 PM _unreal_: What is the tool buttons function?
12:19 PM Tom_L: tool change
12:19 PM Tom_L: for manual tool change
12:19 PM _unreal_: to pause? or to proceed after tool change?
12:20 PM Tom_L: program start, pause/resume, tool change, spindle on/off, ESTOP
12:21 PM _unreal_: how does your tool change button work.
12:21 PM _unreal_: do you hit a gcode for tool change. change the big? then HIT tool change button to start again confirming the tool change?
12:22 PM Tom_L: i'm using hal_manualtoolchange so when it encounters a tool change the program pauses and tells you to change it. that resumes
12:22 PM Tom_L: yes
12:23 PM Tom_L: i preset several tools so i can just change them in the spindle
12:23 PM Tom_L: no ATC
12:23 PM Tom_L: like the old bridgeport boss5s were
12:24 PM _unreal_: do you have to re-zero them or do you have a quick change setup?
12:25 PM gregcnc: you can set it up either way
12:25 PM Tom_L: alot of guys with the chinese spindles touch off each tool
12:26 PM Tom_L: i'm using the spindle off my old sherline so i have a bunch of sherline holders
12:27 PM _unreal_: I just ordered this https://www.amazon.com/MYSWEETY-Cooled-Spindle-Converter-Collet/dp/B01N1EJEQ1/ref=sr_1_2?dchild=1&keywords=1.5kw+spindle&qid=1585873038&sr=8-2
12:27 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A3/Mold10.jpg
12:28 PM Tom_L: i set them up in a row to keep track of them
12:28 PM gregcnc: you'll have to touch off tools if you change int he middle of the program
12:28 PM gregcnc: that is after teh tool change
12:29 PM _unreal_: I may do something like that though I'd use starboard
12:29 PM _unreal_: wood is nice but >:) I get tons of it free and starboard is better
12:29 PM Tom_L: i use whatever is laying around
12:30 PM * t4nk_freenode uses _unreal_
12:30 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A3/Mold_Rev2/Final_mold1.jpg
12:30 PM Tom_L: then i label them as to what they are in the program
12:30 PM _unreal_: with any luck the yard wont get closed down. we likely wont because we work on coast guard and military boats all the time
12:30 PM gregcnc: starboard = hdpe?
12:30 PM _unreal_: yes
12:31 PM t4nk_freenode: dirty plastic, in other words :b
12:31 PM _unreal_: dirty?
12:31 PM t4nk_freenode: you drill the holes, and get the smudges for free
12:31 PM _unreal_: I have no idea what you means
12:31 PM _unreal_: mean even
12:31 PM gregcnc: i have to make some collet racks
12:31 PM t4nk_freenode: as usual ;)
12:32 PM _unreal_: Tom_L, is the sock a special tool as well?
12:32 PM Tom_L: absolutely
12:32 PM _unreal_: heh, I was pulling tools out few years ago at work.
12:32 PM _unreal_: and I pulled out my BT speaker
12:32 PM _unreal_: skull candy speaker
12:32 PM Tom_L: that was a mold i made for a guy
12:33 PM _unreal_: my boss asked me what kind of a tool is that? I said its a music tool
12:33 PM _unreal_: hehe
12:33 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A3/Mold_Rev2/Final_mold3.jpg
12:33 PM _unreal_: oh the metal thing
12:33 PM _unreal_: AHHHHH ok
12:33 PM _unreal_: I was wondering what it was
12:33 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A3/A3_2.jpg
12:33 PM _unreal_: mold for molding what kind of material?
12:33 PM Tom_L: i milled a few but he wanted to try and mold them
12:33 PM _unreal_: aluminum?
12:34 PM Tom_L: yes
12:34 PM Tom_L: the mold is steel
12:34 PM _unreal_: how did it work?
12:34 PM Tom_L: good
12:34 PM Tom_L: took him a few times to figure it out
12:34 PM _unreal_: no real sticking issues? i assume he graphite's before a pour
12:35 PM Tom_L: not sure what he used
12:35 PM Tom_L: pam maybe
12:35 PM _unreal_: :S
12:35 PM _unreal_: typically a high temp powder
12:36 PM _unreal_: is used as a release agent on molds
12:42 PM gregcnc: I was going to go with a 12 footer https://www.dailymail.co.uk/news/article-8128435/NSW-man-adapts-hula-hoop-distance-people-amid-coronavirus-pandemic.html#v-8547601753405605882
12:48 PM _unreal_: That guy was clearly doing that to have his 15min of fame
12:49 PM _unreal_: OMG. items that normally would have shipped the next day from amazon are going to get to me next week some time
12:49 PM _unreal_: fark me
12:50 PM gregcnc: didn't you get the note about that when you open amazon?
12:50 PM _unreal_: no
12:50 PM _unreal_: this pc never shuts down
12:50 PM gregcnc: https://www.amazon.com/gp/help/customer/display.html?nodeId=GDFU3JS5AL6SYHRD&_encoding=UTF8&ref_=covid19_UPNAV_Search
12:51 PM Tom_L: _unreal_, part from the mold: http://ruemohr.org/~ircjunk/tempimage/p1120542.jpg
01:04 PM rue_mohr: ;)
01:10 PM _unreal_: Tom_L, how come you didnt put the handle hole in the mold?
01:15 PM Tom_L: we talked about that and decided not to
01:15 PM Tom_L: besides, the 2nd op guy needed a job
01:16 PM _unreal_: interesting
01:16 PM _unreal_: heh
01:16 PM Tom_L: it was a rue_mohr project
01:17 PM _unreal_: hum
01:17 PM _unreal_: I'm prepping for a milling job right now
01:17 PM _unreal_: finished my cad now caming it
01:39 PM gregcnc: https://www.facebook.com/Free1Humanity/photos/a.241316522972905/932124617225422/?type=3&theater
01:52 PM _unreal_: pcb is milling away
01:52 PM _unreal_: When this thing is done I'll have my power supply breakout board done
02:00 PM rue_mohr: I think the hole would have stuck in the mold
02:01 PM _unreal_: possible, but an easy solution is to put a screw IN the mold as part of the finished surface
02:01 PM _unreal_: when the aluminum pour is done and ready for popping, you turn the screw and it would eject the part
02:02 PM _unreal_: leave a mark SURE but all plastic injection mold parts have an ejection pin marks
02:03 PM Tom_L: i considered a pin and removing it afterward
02:03 PM _unreal_: tom I would put a SET screw in the part. at a set location. drill/tapped, then mill the part including the setscrew reveal
02:03 PM _unreal_: it then becomes part of the mold.
02:04 PM Tom_L: i know what you're saying
02:04 PM _unreal_: turn to be flush, or turn to eject the part and return to molding
02:06 PM * _unreal_ assumes rue_mohr is thinking.....
02:09 PM _unreal_: OMG.... 127mm/m feed is killing me
02:09 PM _unreal_: cutting out the board but have to do it in a few passes so as not to break the .5mm bit
03:11 PM _unreal_: WOW I have never gotten my 100 watt soldering gun this hot before
03:11 PM _unreal_: regardless my power pcb is done
04:38 PM Deejay: gn8
04:43 PM _unreal_: how dare you leave
04:43 PM _unreal_: bastard
04:44 PM _unreal_: heh
05:03 PM skunkworks: andypugh: can you tell which one has the spindle position low passed? http://electronicsam.com/images/greenmachine/IMG_20200404_165328.jpg
05:04 PM andypugh: I would say the one on the left. Partly as the corners might have a hint of phase-lag
05:06 PM andypugh: Here’s a random idea :-)
05:06 PM andypugh: Set up a sim-spindle http://linuxcnc.org/docs/2.7/html/man/man9/sim_spindle.9.html
05:07 PM andypugh: Then set up a PID controller to keep its position equal to your encoder position
05:07 PM andypugh: And then use the sim-spindle output.
05:08 PM andypugh: SHould be no phase-lag that way. (I think this would count as a rudimentary phase-locked loop)
05:08 PM XXCoder: andy you know anything about lasers? i have new laser diode that dont turn off :(
05:08 PM andypugh: And is very similar to the position-interpolated that the software encoder uses.
05:08 PM XXCoder: it should be pwm but..
05:08 PM andypugh: I know very little.
05:09 PM XXCoder: drat ok :)
05:09 PM andypugh: I assume it turns off when you disconnect the power? If not, keep it :-)
05:09 PM XXCoder: lol laser that always fires when disconnected?
05:09 PM XXCoder: it'd be damn useful lol
05:09 PM XXCoder: defocus and fire at solar arrays for infinite power ;)
05:10 PM Tom_L: XXCoder, i thought you fixed that
05:10 PM andypugh: Maybe the PWM needs to be inverted? ie high=off and low = on?
05:10 PM skunkworks: andypugh: you are right! and yes - the spindle is lumpy at that rpm..
05:10 PM XXCoder: hmm didnt think of that
05:10 PM XXCoder: Tom_L: yea that was old laser diode :) fixed by getting new board lol
05:10 PM XXCoder: would be funny if old board works with this!
05:11 PM Tom_L: you have options...
05:11 PM XXCoder: just had a thought, what if old board simply have pins at different places
05:12 PM XXCoder: no its still 2 wire
05:12 PM skunkworks: andypugh: interesting.. next project.
05:12 PM rue_mohr: _unreal_, I made 50pcs in about 10 mins, no time for unscrewing things :)
05:13 PM XXCoder: wonder if pwm pins can be used for small servo
05:21 PM _unreal_: rue_mohr, 50 in 10min?
05:22 PM _unreal_: I find that hard to believe
05:22 PM rue_mohr: I have them welded in channel locks
05:23 PM rue_mohr: pour, pause( putting the crucible down) and eject (sometimes a bit of tapping required)
05:23 PM rue_mohr: some of them didn't work out, most were fine
05:23 PM _unreal_: channel locks OK now that I can believe
05:24 PM _unreal_: just looking at the photos XXCoder posted I would have said bs go fuck you self :)
05:24 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1120857.jpg
05:24 PM _unreal_: err Tom_L
05:25 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1120864.jpg
05:25 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1120862.jpg
05:25 PM _unreal_: so I assume you change channels for sizing right ((:)
05:25 PM rue_mohr: hah
05:25 PM rue_mohr: nothing like garage sale tools
05:25 PM _unreal_: heh
05:26 PM XXCoder: that looks like its cast for something
05:26 PM * _unreal_ grabs more sangria
05:26 PM rue_mohr: "ah! these look like ****! I know EXACTTLY what I need them for!"
05:26 PM XXCoder: uh looks like lead cast for somrthing
05:26 PM rue_mohr: we didn't know if a steel mold would work out
05:26 PM _unreal_: XXCoder, aluminum
05:26 PM rue_mohr: but aluminum cant stick to steel, so..!?
05:27 PM XXCoder: knew it. though fish lure interesting
05:27 PM _unreal_: rue_mohr, do you use graphite powder at all?
05:27 PM _unreal_: for release?
05:27 PM rue_mohr: really did use PAM
05:27 PM _unreal_: ! really?
05:27 PM _unreal_: wow
05:27 PM XXCoder: hmm though um not sure if steel strunks faster than alum or not. would that cause issues for casting alum in steel mold?
05:27 PM rue_mohr: but it looks like the oil/steel, turned to FeO3 and it was fine
05:28 PM rue_mohr: what I'll say, is "it worked"
05:28 PM _unreal_: rue_mohr, try graphite some time
05:28 PM rue_mohr: there could be improvements, we seem to have confirmed plausability
05:28 PM _unreal_: do some research
05:28 PM _unreal_: I've done lots of casting
05:28 PM XXCoder: you used it with alum metal?
05:29 PM XXCoder: is those alum? I thought it was lead
05:29 PM rue_mohr: http://ruemohr.org/~ircjunk/projects/aluminumcasting/slide.htm
05:29 PM rue_mohr: yep, alum
05:29 PM rue_mohr: they are triggers for sprayers
05:29 PM XXCoder: ahh ok. was thinking fishing weights and such
05:30 PM rue_mohr: I'm a horridly crude hobbyist, which is gaining experience
05:30 PM rue_mohr: did lots of casting last year
05:30 PM XXCoder: you know of myfordboy?
05:30 PM rue_mohr: yep
05:30 PM _unreal_: heh rue_mohr my Xwife was so amazed when I did the coffee can foundry to build a clamping part from aluminum for are bike tag along for are daughter when she was 2
05:30 PM XXCoder: cool :)
05:30 PM rue_mohr: wish I were that good!
05:31 PM XXCoder: heh I do want casting but I want to cast lower temp metals
05:31 PM XXCoder: cnc out molds from wood
05:31 PM XXCoder: then cast it
05:31 PM rue_mohr: :)
05:31 PM _unreal_: XXCoder, aluminum IS a low temp metal
05:31 PM rue_mohr: I'd like to do iron
05:31 PM XXCoder: trying to make wheel or flywheel?
05:31 PM rue_mohr: 3 fold
05:32 PM rue_mohr: same mold, but one app is for a vacuum table for casting ;)
05:32 PM XXCoder: youre using regular dirt?
05:32 PM rue_mohr: the other is a disc sander
05:32 PM rue_mohr: no
05:32 PM _unreal_: XXCoder, Thats oiled sand
05:32 PM rue_mohr: fine sand with bentonite and water
05:32 PM XXCoder: it looks so different from greensand (which is ironically red)
05:33 PM rue_mohr: last thing last year I got a cement mixer for making the stuff in bulk
05:33 PM rue_mohr: seems I always need more
05:33 PM XXCoder: what happened to the box? did you mill it clean or just use it as is
05:33 PM _unreal_: rue_mohr, ever have a tamper tantrum?
05:33 PM _unreal_: lol
05:33 PM rue_mohr: but a week or so ago I found a really tiny cope/drag I'd made seems I keep making bigger ones over the years
05:34 PM rue_mohr: I made 2 boxes
05:34 PM _unreal_: no responce :(
05:34 PM rue_mohr: the one with the wooden mold had a hole in it, I milled it open and used it to make an rpm box for my bandsaw
05:34 PM rue_mohr: the other one is still waiting for a home
05:34 PM rue_mohr: heh
05:34 PM XXCoder: lol
05:34 PM skunkworks: andypugh: why wouldn't the sim encoder mimic the actual encoder lumpyness?
05:35 PM rue_mohr: I made a good tamper last year too
05:35 PM XXCoder: nothing can bypass need of hours to get good
05:36 PM rue_mohr: http://ruemohr.org/~ircjunk/projects/discsander/p1130775.jpg <-- disc sander
05:36 PM rue_mohr: http://ruemohr.org/~ircjunk/projects/vacuumplate/p1130325.jpg <-- vacuum plate
05:36 PM XXCoder: you made the disc base?
05:36 PM rue_mohr: yup
05:36 PM XXCoder: cool :)
05:36 PM rue_mohr: the folder has a side.htm at the bottom, its a build log
05:37 PM andypugh: skunkworks: Because the PID will naturally smooth it out. The idea is to make a smooth-runing thing run in exact phase with the real thing.
05:38 PM rue_mohr: http://ruemohr.org/~ircjunk/projects/castbox/slide.htm <-- more on that cast box
05:40 PM * skunkworks breaks out halscope
05:42 PM rue_mohr: ok, plan, step 1) sleep step 2) weld like there is an apocalypse.
05:42 PM rue_mohr: wait... there is... right...
05:43 PM rue_mohr: the idea of casting project boxes is exciting..
05:45 PM skunkworks: Andy - so pid takes encoder postion as input - then output of pid goes to sim-spindle-velocitycmd and feedback to pid is from position-fb
05:46 PM skunkworks: *spindle-postion-feedback.
06:30 PM andypugh: skunkworks: yes
06:31 PM Tom_L: andypugh, how's things lookin across the pond?
06:31 PM andypugh: Tuned with mainly I it should give you something a lot like the lowpass, but without the phase lag.
06:31 PM andypugh: Tom_L: Dull. I am off work for 3 weeks, not allowed to work and not allowed to go anywhere
06:32 PM Tom_L: no work from home?
06:32 PM Tom_L: i've been off a couple weeks already
06:32 PM andypugh: I was working from home, but the company decided to take the government scheme and furlough us.
06:34 PM Tom_L: my first week off was planned vacation but travel was cut short since everything was cancelled
06:35 PM Tom_L: some places here are requiring a pass just to be out at all
06:38 PM andypugh: I am not sure I entirely believe the numbers at https://coronavirus.jhu.edu/map.html
06:38 PM XXCoder: direct page https://gisanddata.maps.arcgis.com/apps/opsdashboard/index.html#/bda7594740fd40299423467b48e9ecf6
06:38 PM andypugh: In that for the UK it shows 4300 deaths and 215 revovered.
06:39 PM XXCoder: i dont think recover is always reported
06:39 PM andypugh: That’s my assumption
06:39 PM XXCoder: for quite a while usa had over 100 deaths and zero recovery. 100% fatality? nah just no reports
06:40 PM andypugh: XXCoder: my link was the same JHU map from the JHU website..
06:40 PM XXCoder: yeah but without annoying overlay page
06:40 PM XXCoder: the url I pasted is one i have been using for over a month now
06:42 PM XXCoder: i dont really like myfordboy lathe
06:42 PM XXCoder: have to do over lathe to turn it off
06:43 PM XXCoder: *arm over
06:44 PM andypugh: Is it a Myford?
06:44 PM XXCoder: myfordboy yeah
06:44 PM XXCoder: https://youtu.be/Iwwfm-u7E2Y
06:44 PM skunkworks: andypugh: how would I tune this?
06:47 PM andypugh: skunkworks: The normal way, look fo the f-error and adjust it away.
06:47 PM skunkworks: andypugh: but if you adjust it away... Isn't it following too good?
06:47 PM andypugh: XXCoder: There is an electrical switch at the front, he is just choosing to release the belts instead
06:48 PM XXCoder: really? odd. i wonder why
06:48 PM skunkworks: andypugh: http://electronicsam.com/images/greenmachine/2020-04-04-184448_1920x1080_scrot.png
06:48 PM skunkworks: P=50
06:49 PM XXCoder: i just read about people burning down cellular network stuff
06:49 PM andypugh: I would expect to be tuning mainly with I
06:49 PM XXCoder: thinking its causing covid-19
06:49 PM XXCoder: shaggering ingorance. :(
06:49 PM andypugh: XXCoder: There should be the death penalty for that. Too stupid to live.
06:50 PM XXCoder: im extremely resistant to suggestions of elimation of people. because it always turns into "certain people"
06:50 PM andypugh: skunkworks: I would be tuning for the error to be small, but also for the sim-spindle velocity to be constant. Or nearly.
06:51 PM XXCoder: andy i was once proven literally seconds after saying same thing I just said
06:51 PM XXCoder: one guy said "yeah we should get rid of poor people!"
06:51 PM XXCoder: (unrelated to coronavirus it was in 2018? something)
06:52 PM andypugh: I am not in favour of the dath penalty for anything else.
06:53 PM XXCoder: sure but I bet you tests will be biased
06:54 PM XXCoder: georgia beach is reopening. apparently can exercise there as long as 6 feet away and stuff. lets see if it works or not
06:54 PM andypugh: I am not sure if it applies to people who burn down cellphone masts because they beieve that it causes impure thoughts.
06:54 PM SpeedEvil: To be fair, it does carry the internet.
06:55 PM XXCoder: cats all way down
06:55 PM andypugh: Yes, so perhaps let those off. Just the Covid people.
06:55 PM XXCoder: oh about cats all way down... http://www.infinitecat.com/
06:56 PM andypugh: Seriously though, do you think that they really thought that burning down the masts would stop Covid, or did they really just want a thin excuse to burn someting down?
06:56 PM XXCoder: i dont know
06:56 PM XXCoder: antiscience is getting way out there now
06:56 PM XXCoder: its almost like it was funded by enemy country
06:56 PM _unreal_: wow
06:56 PM _unreal_: busy
06:57 PM * _unreal_ skims BTW half drunk. been drinking sangria
06:57 PM _unreal_: lots of
06:57 PM _unreal_: :)
06:57 PM _unreal_: happy :)
06:59 PM XXCoder: (i dont know if it actually was, was joking if youre not sure heh)
07:00 PM andypugh: Burning down 5G masts because of Huawei would be slightly logical.
07:00 PM _unreal_: cheers
07:01 PM _unreal_: huawei?
07:02 PM andypugh: I can’t spell
07:02 PM * _unreal_ cant read so we are even
07:02 PM XXCoder: that would have tiny logical connection. tiny, but nonzero
07:02 PM andypugh: 华为
07:03 PM andypugh: https://www.cnet.com/news/us-finds-huawei-has-backdoor-access-to-mobile-networks-globally-report-says/
07:09 PM XXCoder: yeah i recall that. it was pretty bad
07:10 PM XXCoder: i hope someday for automatic creation of stuff
07:10 PM XXCoder: why make millions when you can make them to order in 2 days or 3
07:10 PM XXCoder: and customizability would be king
07:10 PM HighInBC: and piracy
07:11 PM HighInBC: "Would you download a car??"
07:11 PM HighInBC: yes, yes I would
07:11 PM XXCoder: thats where it would be interesting.
07:11 PM XXCoder: ecomony would not be based on design
07:11 PM XXCoder: it would be based on materials used
07:11 PM HighInBC: I want molecular printers so I can print my favourite drugs at home
07:12 PM HighInBC: carbon, oxygen, nitrogen, hydrogen is all I need
07:12 PM XXCoder: high theres this interesting book where they have such tech
07:12 PM HighInBC: sci fi?
07:12 PM XXCoder: they found perfect wood plank for example, by first scanning it
07:12 PM XXCoder: then test it like twist, nail though various places etc
07:12 PM XXCoder: they tested thousands planks and found one that had no flaw at all
07:13 PM XXCoder: but odd thing is that walls using that plank looks like game texture
07:13 PM XXCoder: repeative
07:13 PM XXCoder: and yes scifi book :)
07:14 PM XXCoder: i bet that people would keep finding "good grade" and few "perfect grade"
07:14 PM XXCoder: so people have varied wood look though
07:18 PM * SpeedEvil looks at his pile of 250*68*38*2400mm wood.
07:19 PM SpeedEvil: I was idly wondering about computer grain matching to make nice patterns.
07:19 PM XXCoder: that would be interesting
07:20 PM XXCoder: you could turn planar into plank scanner
07:20 PM XXCoder: probably have to label them A1 A2 (sides of same plank) so on heh
07:21 PM * SpeedEvil wishes you could get plywood plies inexpensively.
07:21 PM XXCoder: just had an silly idea related to yours
07:22 PM Tom_L: you sayin his idea was silly????
07:22 PM Tom_L: :)
07:22 PM XXCoder: computer to figure how to connect them in loops when its cut into wedges
07:22 PM Tom_L: XXCoder, the Ga mayor is nuts btw
07:22 PM XXCoder: would be insanely hard compution since cuts could be anywhere
07:22 PM SpeedEvil: Similar ideas have occurred to me.
07:22 PM SpeedEvil: Also with pile of rocks and 3d scanner.
07:22 PM XXCoder: tom some politicans are crazy nowdays :(
07:23 PM Tom_L: some?
07:23 PM XXCoder: yeah
07:23 PM XXCoder: fine, most
07:23 PM Tom_L: they scan logs at the mill to get the highest production, no reason you couldn't pattern match
07:24 PM XXCoder: side to side isnt too bad
07:24 PM XXCoder: but circles like I menioned? i dont know
07:58 PM XXCoder: https://www.kiro7.com/news/trending/detroit-bus-driver-who-posted-video-about-coughing-passenger-dies-coronavirus/PMLM5K5U2BABPINDZRJDPFNJJY/
07:58 PM XXCoder: very sad :(
08:05 PM Jymmm: XXCoder: yeah
08:37 PM unterhaus: why do stepper motors have a voltage rating? Is it just V=IR for locked rotor condition?
08:39 PM Tom_L: derived from the motor's rated current and winding resistance
08:40 PM Tom_L: http://www.e-jpc.com/blog/?p=111
08:48 PM unterhaus: that's a good explanation, or one might say it's just V=IR for a locked rotor condition. Where 'I' is rated current and R is the winding resistance
09:36 PM XXCoder: Tom_L: learned something
09:37 PM XXCoder: laser just needs 2 wires to turn on. starting to wonder if its pwm at all
09:39 PM XXCoder: hm
09:43 PM Tom_L: what was wrong with the first one?
09:44 PM Tom_L: 2 wire could still be pwm
09:44 PM Tom_L: gnd & signal
09:44 PM XXCoder: i suppose but it dont seem to change anythinbg
09:44 PM XXCoder: oh first one is "fine"
09:44 PM XXCoder: something screwy with double focus and light spread but its functional
09:45 PM XXCoder: trying same 2 wire with it see what happens
09:47 PM XXCoder: nothing happens
09:48 PM unterhaus_: when you flip the switch, do you say "pew, pew, pew"? I believe that's required
09:48 PM XXCoder: lol
09:49 PM XXCoder: hey I even wear a cool goggle
09:56 PM XXCoder: Tom_L: tried old laser diode
09:56 PM XXCoder: it doesnt even turn on
09:56 PM XXCoder: something broke I guess
09:56 PM XXCoder: bah
10:51 PM _unreal_: yawn
10:51 PM _unreal_: Just watched hobbs and shaw
10:51 PM _unreal_: DAMN good movie
10:51 PM _unreal_: :)