#linuxcnc Logs
May 14 2019
#linuxcnc Calendar
02:48 AM Loetmichel: *giggle* Boss induged me with 100 eur for a cheapass chinese bending brake. Not even fully unpacked and mounted i already have modification plans: it needs a press bar thats segmented, at least 20mm high, so i can make small boxes... *never satisfied*.... -> http://www.cyrom.org/palbum/main.php?g2_itemId=17373&g2_imageViewsIndex=1
03:03 AM Deejay: moin
04:54 AM jthornton: morning
04:54 AM XXCoder: yo
04:56 AM jthornton: Loetmichel: I need to take a photo of the one I bought at an auction from an old shop teacher
04:58 AM jthornton: his place was full of inventions he had made, he even built his own stair climber
05:20 AM Loetmichel: jthornton: where does that come from?
05:21 AM jthornton: the bender he made it, he made everything
05:45 AM pink_vampire: https://i.imgur.com/qNOBDIp.jpg
05:45 AM Tom_L: morning
05:47 AM XXCoder: lol
05:48 AM Tom_L: so i had some old blades from my edger and the 'Hi-Vac' tips from the mower blades were getting worn out so i used the leftovers from the edger blades to make some new tips for the mower blades instead of tossing em
05:48 AM Tom_L: just happened to be the same thickness steel
05:48 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Snapper/Hi_vac_tip.jpg
05:49 AM pink_vampire: HF band saw is soooo f*cking loud
05:50 AM pink_vampire: it is not 3AM compatible
05:50 AM XXCoder: lol
05:51 AM pink_vampire: i need to make it a belt drive
05:52 AM jthornton: Tom_L: what does that part do?
06:11 AM Loetmichel: *grin* really neat to have an OBD2 app in the cars android radio... just had the yellow engine light on... readout: "P1620 map sensor signal high"... wiggled the sensor cable at the manifold, deleted the error, reread the fault log: clean... ;)
06:28 AM Tom_L: jthornton, goes on the tips of the mower blade to create more lift for bagging leaves etc
06:29 AM Tom_L: helps with wet grass etc too
06:34 AM Tom_L: https://i.ebayimg.com/images/g/ZpYAAOxykUZTgOqj/s-l1600.jpg
06:34 AM Tom_L: bolts on the end
06:41 AM elmo40: Loetmichel, i think that is a wasted 100 Euro on that vice mounted brake.
06:46 AM jthornton: I've never seen a blade like that
06:48 AM * jthornton just got back from taking the cat to the vet to get spayed, I guess they do that before regular hours
06:52 AM elmo40: it is supposed to 'mulch' the lawn.
06:52 AM elmo40: also supposed to help prevent clippings from sticking to the mower deck by making a lot of air turbulance.
06:53 AM elmo40: problem is, they don't work... you will never see a system like that on a true commercial machine.
07:07 AM Loetmichel: elmo40: its better than bending by hand like i do now
07:07 AM elmo40: true. but there must have been better options in a similar price range.
07:08 AM elmo40: those clamps at the left and right will become tiresome to tighten
07:08 AM pink_vampire: why universal motors sooooo noisy???
07:09 AM Loetmichel: ah, finally the running lights LEDs arrived... clean cold white angel eyes now... (upper pic before with halogen, lower pic with the new leds) -> http://www.cyrom.org/palbum/main.php?g2_itemId=17376&g2_imageViewsIndex=1
07:09 AM Loetmichel: pink_vampire: fans and brushes
07:10 AM pink_vampire: what is the quaitest motor?
07:10 AM Loetmichel: 3 phase induction
07:11 AM pink_vampire: can i run it without a vfd?
07:11 AM Loetmichel: nope
07:11 AM Loetmichel: unless you have three phase in your workshop already
07:12 AM pink_vampire: i need slow motor
07:12 AM pink_vampire: 100-300 rpm will be fine
07:18 AM elmo40: pink_vampire, because they need to run on many voltages
07:18 AM elmo40: there are no 100RPM motors, unless you have a VFD.
07:19 AM elmo40: and vfd is cheap for low Hp motors
07:19 AM Loetmichel: elmo40: geared down 3 phase will do
07:19 AM elmo40: and 3-phase motors are also inexpensive. usually less expensive than single phase.
07:19 AM pink_vampire: now i just use my 8V usb drill to power the saw
07:20 AM elmo40: so you need HIGH Hp, eh? ;-)
07:20 AM pink_vampire: nooo
07:20 AM elmo40: use a stepper motor.
07:21 AM pink_vampire: that is not a bad idea
07:22 AM pink_vampire: I don't care if it cut slow, I just don't want any noise here
07:22 AM elmo40: but steppers are noisy
07:22 AM elmo40: unless you use a TMC2208 driver :-)
07:25 AM pink_vampire: I think I will try my old spindle motor
07:25 AM Tom_L: jthornton, they work really well
07:25 AM pink_vampire: but it will make the band saw a laser saw
07:32 AM elmo40: laser saws rule!
07:33 AM beachbumpete1: I need me a laser saw ;)
07:34 AM JT-Shop: beachbumpete1: the Gamo barrel was dirty...
07:34 AM beachbumpete1: and a laser blaster would be cool too... Oh and a light saber while we are at it.
07:34 AM beachbumpete1: was it new?
07:35 AM pink_vampire: with 2000 rpm there is a potential that it will emit light
07:35 AM JT-Shop: maybe 100 shots through it
07:35 AM beachbumpete1: I use monofilament leader to pull thru tee shirt patches on my airguns.
07:35 AM Loetmichel: beachbumpete1: the more civilized weapon is sadly not really possible with conventional physics
07:35 AM JT-Shop: I used some JB paste to clean the bore till it shined
07:35 AM Loetmichel: or not practical
07:36 AM Loetmichel: waaaay to much power radiated
07:36 AM beachbumpete1: Loetmichel: so far as we know currently...
07:36 AM Loetmichel: you would grill yourself instantly
07:40 AM beachbumpete1: that does not sound like fun
07:40 AM Loetmichel: nope, even if we find a power source AND a way to restrict the length
07:40 AM Loetmichel: someone on youtube calculated it thru
07:40 AM beachbumpete1: aw cmon' man you're killin my dreams
07:40 AM Loetmichel: it would radiate so much heat that it compares to a continous H-bomb explosion
07:40 AM Loetmichel: NOT funny to stand right next to that .-)
07:40 AM elmo40: SPF 1,000,000 to the rescue!
07:40 AM beachbumpete1: Not sure I buy that
07:40 AM beachbumpete1: it doesn't have to be a wide bright shiny beam it could be a very thin sliver of a beam but with enough power to cut
07:40 AM Loetmichel: beachbumpete1: thats the problem
07:41 AM elmo40: wow. what a concept
07:41 AM elmo40: don't burn out your USB hub!
07:41 AM pink_vampire: LOL no
07:42 AM pink_vampire: it is only charge via usb
07:42 AM elmo40: i'd use a phone charger cube. not a computer
07:42 AM elmo40: that makes more sense. ;-)
07:43 AM pink_vampire: it was 20$ at walmart soo cut
07:44 AM elmo40: https://qurl.org/dnV
07:44 AM elmo40: like this?
07:45 AM elmo40: actually. i think that one is plugged in for operation
07:45 AM elmo40: there is a push button on the chord
07:45 AM pink_vampire: LOL nooo
07:45 AM elmo40: like this?
07:45 AM elmo40: https://i.ytimg.com/vi/WXVVltLFIv8/maxresdefault.jpg
07:47 AM pink_vampire: https://www.amazon.com/dp/B0111N8O6G/
08:25 AM beachbumpete1: I got a sort of complex request from my boss here I was wondering if anyone here has ever done something like this.
08:25 AM beachbumpete1: We have a piece of what is referred to as pecky cypress wood that has a particular pattern of rot/worm holes in it.
08:26 AM beachbumpete1: He wants to make a duplicate of it with our CNC router cutting the same pattern into another piece of similar wood.
08:26 AM jthornton: image to gcode?
08:26 AM beachbumpete1: IE I need to use a photo or scan or something of it to make model
08:26 AM beachbumpete1: then I gotta cut it on the CNC router
08:27 AM beachbumpete1: jthornton: I was thinking along those lines.
08:27 AM beachbumpete1: just never used it to make a natural wood pattern like that not even sure how the router would recreate it really.
08:27 AM pink_vampire: you can use an image and convert it to gcode or 3d file
08:27 AM beachbumpete1: he actually asked me about this awhile back
08:28 AM beachbumpete1: and I told him I could probably come up with something rolleyes
08:29 AM beachbumpete1: what is a really good program method for this would you say?
08:29 AM beachbumpete1: preferrably something you guys have used..
08:29 AM pink_vampire: put the wood that you want to copy on the cnc, put a camera on the spindle, take some pictures, stitch them to panorama, convert it to 3d file / gcode
08:30 AM beachbumpete1: I have a couple hi res photos of it and I have a 3d Scanner we use for measuring things but not sure how it would work with something like this really.
08:30 AM beachbumpete1: I was hoping to use the photo method
08:30 AM beachbumpete1: its the whole convert to 3d file that is the issue... what is the best program for this?
08:31 AM pink_vampire: how accurate you need it to be?
08:31 AM pink_vampire: https://www.thuijzer.nl/image2gcode/
08:31 AM beachbumpete1: accurate is probably not the best word... realistic? it is a rather random pattern anyway so as long as it is similar
08:32 AM beachbumpete1: have you used this program?
08:32 AM pink_vampire: yes
08:32 AM beachbumpete1: what did you make with it?
08:32 AM pink_vampire: you need to play with that contrast of the picture
08:33 AM beachbumpete1: ah ok
08:33 AM pink_vampire: I need a job..
08:33 AM beachbumpete1: I understand it works with darker and lighter areas but the wood has both really
08:33 AM beachbumpete1: I mean that it can have a shallow area that is darker and a deeper area that is lighter
08:34 AM Loetmichel: *a hooray to industrial quality switchers... just managed to short the 24V 10A input a few times (screw fell on the plug contacts of that)... 0805 100nF cermaics didnt like that and exploded in a nice arc... mainboard on the 12V side didnt even reboot... :-) *stink* *replace the cap* -> http://www.cyrom.org/palbum/main.php?g2_itemId=17379&g2_imageViewsIndex=1
08:34 AM beachbumpete1: Loetmichel: woah!
08:35 AM pink_vampire: nice job
08:39 AM beachbumpete1: uploading the image now. We will see what we get :)
08:40 AM beachbumpete1: how long does it usually take for the computations to work?
08:47 AM JT-Shop: Loetmichel: http://gnipsel.com/images/machine-shop/small-brake/small-brake-01.jpg
08:47 AM JT-Shop: http://gnipsel.com/images/machine-shop/small-brake/small-brake-02.jpg
08:49 AM st1 is now known as st12
08:49 AM pink_vampire: JT-Shop: look very nice
08:50 AM pink_vampire: https://www.ebay.com/itm/392294136200 whyyyyyyyyyyyyyyyyyyy
08:58 AM Loetmichel: JT-Shop: cute
09:24 AM elmo40: beachbumpete1, you might have to hand draw over the photo with a contrasting colour
09:24 AM elmo40: then manually edit the depth at each area...
09:25 AM beachbumpete1: elmo40: thanks for the tip man. I cannot seem to get this online program to give me g code back LOL
09:25 AM elmo40: copying nature is quite difficult! something to do with 'ln()' and 'e' based formulae... ;-)
09:33 AM elmo40: beachbumpete1, can you upload the photo?
09:33 AM elmo40: http://imgur.com/
09:33 AM elmo40: http://tinypic.com/
09:33 AM elmo40: either one is nice
09:56 AM beachbumpete1: elmo40: Sorry I am at work right now and I have to work on something else right now. But I do intend to try this some more. I have a bit of time before we need to try this. I also want to try to get a better photo of the wood.
09:57 AM elmo40: use paint.net and high contrast the photo or alter the colours. make it false colour and see how the website converts it.
09:58 AM elmo40: or simply B&W then over saturate the image to get rid of anything you don't want cut.
10:00 AM beachbumpete1: now THAT is a great idea..
10:01 AM beachbumpete1: So far I am not able to get ANY G code from that site. Its sits and thinks awhile then nothing
10:33 AM elmo40: every time you try it, you need to re-upload the image.
10:38 AM beachbumpete1: I know but what does it do when it is successful? It just resets for me after awhile....
10:45 AM jthornton: somehow I had a feeling that changing the chicken door motor was going to turn into an all day job...
11:03 AM elmo40: beachbumpete1, it will show the gcode and also an image of the tool path.
11:06 AM elmo40: beachbumpete1, do you get anything like this?
11:06 AM elmo40: http://oi64.tinypic.com/282l3bn.jpg
11:07 AM elmo40: you can also give this a look
11:07 AM elmo40: http://diga.me.uk/image2Gcode.html
11:09 AM beachbumpete1: nope nothing
11:12 AM elmo40: then something is wrong. maybe the photo is too large?
11:12 AM elmo40: or not enough contrast?
11:12 AM elmo40: upload a photo when you can. i'd like to help out.
11:33 AM CaptHindsight: beachbumpete1: http://www.scorchworks.com/index.html
11:33 AM CaptHindsight: Dmap2Gcode: Convert Greyscale Images to G-Code
11:34 AM CaptHindsight: G-Code Ripper: Scale, Rotate, Translate, Split and Wrap G-Code
11:35 AM CaptHindsight: written in Python, they work on your PC
11:37 AM CaptHindsight: the ripper has a auto probe for matching your image to the surface of the non planar part
11:39 AM CaptHindsight: JT-Shop: did you use wxPython for stepconfig?
11:40 AM JT-Shop: I didn't write stepconf
11:49 AM CaptHindsight: my humble apologies, it uses PyGTK
12:30 PM {HD}: Once upon a time I opened “notepad“ and now every time I start the computer it auto opens. How in the heck do I turn this thing off?
12:30 PM pink_vampire: hi
12:30 PM pink_vampire: i need help identify an insert
12:31 PM pink_vampire: it is triangle, 2.5mm thick, 7.9 mm base to top point
12:31 PM skunkworks: {HD}: windows?
12:31 PM jdh: tpmt
12:32 PM jdh: at least the t part.
12:32 PM {HD}: skunkworks: no! Lcnc.
12:33 PM {HD}: I’m starting the computer back up so I can make sure what it was called. You made me second-guess myself.
12:34 PM {HD}: https://i.imgur.com/TVswLwv.jpg
12:35 PM pink_vampire: {HD}: remove it from the startup
12:35 PM {HD}: How? I didn’t add it to startup.
12:36 PM pink_vampire: menu > settings > session and startup > applications autostart
12:36 PM pink_vampire: remove:notes
12:36 PM pink_vampire: just remove the V
12:37 PM {HD}: pink_vampire: !!!! Yes !!!! That thing has been auto starting for over a year.
12:37 PM pink_vampire: why you didn't asked?
12:39 PM jdh: who reboots often enough to remember?
12:40 PM pink_vampire: https://www.harborfreight.com/5-piece-indexable-carbide-tool-set-39931.html what insert go in those things??
12:42 PM beachbumpete1: CaptHindsight: thank you
12:43 PM {HD}: pink_vampire: I asked in passing when nobody was really on this channel about a year ago. I don’t recall ever getting an answer. And I don’t restart that frequently so…
12:43 PM Tom_L: beachbumpete1 what about having the wood 3d scanned?
12:43 PM beachbumpete1: Tom_L: We have a decent 3d scanner here actuallly that is another option but I am unsure if the resolution is enough
12:44 PM beachbumpete1: CaptHindsight: do these programs run in Windoze?
12:45 PM beachbumpete1: nevermind
12:45 PM CaptHindsight: beachbumpete1: written in Python so it's likely but I have never tried
12:45 PM beachbumpete1: On the download page there is a Windows executable...
12:46 PM CaptHindsight: oh great, you made me reply :)
12:47 PM CaptHindsight: beachbumpete1: I used those apps to gen some g-code for cnc airbrush on non-planar surfaces
12:47 PM beachbumpete1: I am trying to generate a pecky rotted wood look program from a picture
12:48 PM CaptHindsight: that should work, he wrote it for milling vs what I was doing
12:49 PM CaptHindsight: you might want to use GIMP for the images
12:49 PM CaptHindsight: the app is currently written to convert grey scale to depth
12:50 PM CaptHindsight: so if you modify the source image of the pecky wood to be a range of lighter greys for the shape of the wood ...
12:51 PM CaptHindsight: and then only use dark greys only for the holes, that should make the holes deep cuts
12:53 PM beachbumpete1: Thats a great idea.
12:53 PM beachbumpete1: honestly just importing the image made it look black and white and rather like I was hoping. Generating G code now to run in a test simulator.
12:53 PM pink_vampire: try bump map
12:56 PM CaptHindsight: the other way I do it is by getting the part scanned into a 3d model for NX, then use NX CAM or mastercam to gen the G-code
12:57 PM CaptHindsight: one of these methods costs way more than the other
01:02 PM beachbumpete1: hehe
01:03 PM beachbumpete1: The scanner we have we may try it seems quite accurate so far. We have scanned many rooms and most times we are well within an 1/8" of most manual measurements taken there
01:15 PM CaptHindsight: does anyone use their PC anymore for searching for parts or suppliers
01:16 PM pcw_home: CaptHindsight: pretty much done with XY2-100 interface firmware but will still need driver support
01:18 PM pcw_home: fussiest thing was bounding the position so it can not wrap
01:20 PM pcw_home: basically just a stepgen but with added acceleration so can do parabolic interpolation between waypoints
01:21 PM CaptHindsight: I'll try to get around to it soon
01:21 PM CaptHindsight: all the pro galvos come in analog or XY2-100
01:22 PM CaptHindsight: the cheap Chinese galvos are almost all XY2-100 only
01:22 PM beachbumpete1: Damn the program made some code but it crashes ncviewer online LOL
01:23 PM CaptHindsight: try Camotics
01:23 PM beachbumpete1: hmm
01:23 PM CaptHindsight: https://camotics.org/download.html
01:26 PM CaptHindsight: then send me your welcome :)
01:26 PM CaptHindsight: I pass them around
01:27 PM beachbumpete1: thanks
01:32 PM CaptHindsight: beachbumpete1: can you tell what crashes ncviewer?
01:33 PM beachbumpete1: Not really sure its a rather big file. I will have to play with the photo to get it to do what I want clearly. that and the photo size is only like 6 inches and the boards we want to cut are MUCH larger than that....
01:34 PM CaptHindsight: you have to play with the size of the line segments
01:34 PM CaptHindsight: if they are too small you'll have a giant nc file with lots of short segments
01:35 PM CaptHindsight: took a bit of playing with the image converter to get the hang of how it works
01:36 PM beachbumpete1: I am sure...
01:37 PM beachbumpete1: essentially we want to take what is a short section photograph of the pecky area and sort of randomize it to be able to cut it into long boards like 8"x12' stacked alongside each other on the CNC router and run the program for a few hours....
01:37 PM CaptHindsight: sure, i get it
01:38 PM CaptHindsight: i think you'll just nee3d to tweak the images in GIMP or similar and then find the magic settings in the converter
01:39 PM CaptHindsight: beachbumpete1: do you just want to mill the pecks or the pecks and the contours of the wood?
01:40 PM beachbumpete1: mostly just the pecks and pockets etc..
01:41 PM CaptHindsight: http://www.scorchworks.com/Gcoderipper/gcoderipper.html
02:39 PM beachbumpete1: thanks
03:31 PM Connor: Anyone know anything about adding a dust collection to a surface grinder?
03:31 PM Connor: I.E. can a shop vac work?
03:33 PM gloops: they usually use the 4 inch pipe for dust shoes
03:35 PM gloops: with motion being repetetive back and forth with a S/G though, the dust will get stopped and dropped down with a shoe, and hoovered up in later passes i suppose
03:38 PM Connor: Shop vac's are 2 1/2" and I'm a bit worried about sparks too.
03:51 PM Deejay: gn8
03:51 PM en1gma: Rab thanks about saying i have nice RA setup. alot of work left to do. im not sure if i can get buy with grbl and arduino setup. right now i just use this script https://pastebin.com/HZbBY50F to do my sweeps
03:52 PM en1gma: i would much prefer a starting point of Zero (X) and Zero (Y) and then run everything from absolute from there
03:53 PM en1gma: i would like to use an app like dishpointer for it to tell me the location of the sat and then i could either manually move the sat dish lnb there or enter the X and Y azimuth and elevation and it go right to it
03:54 PM en1gma: my pastebin code i posted i know is actually horrible but it works 100% if someone could help convert that so its alot cleaner it would be nice
03:54 PM en1gma: https://www.youtube.com/watch?v=mewQ82XwuNE the code i posted goes to this
03:57 PM en1gma: in that video the lnb (dish arm) was pointing at. at 1:28 seconds in the video when the lnb moves down (Y axis) it moves to the point it started at when i start to run that program
03:57 PM en1gma: it moves 1000 steps 21 different times. at the end it comes down Y axis 21000
03:57 PM en1gma: all at once
03:59 PM en1gma: how do i set my start point as an absolute number or (degree) so i can tell the code specific degrees to goto and the sat dish will move there
03:59 PM en1gma: do i need linuxcnc for that?
04:00 PM en1gma: in the end i would like my sdr receiver to make heatmaps of the sky for the frequencies my lnb has. i know that will probably take a PID controller so for right now just getting the dish to do what i say when i give it an elevation or azimuth would be awesome
05:23 PM jthornton: XXCoder: turned out to be a relay board for door down, so it would go up ok but not go down and the new motor is much quieter
05:53 PM Tom_L: jthornton, those cheap chinese relays?
05:53 PM Tom_L: i had them in the mill and quit using them for one of your surplus ones
05:59 PM JT-Shop2: yea, 3.3v relays for the Rpi
06:02 PM Tom_L: ahh 3.3v
06:04 PM pink_vampire: en1gma: look very cool!
06:47 PM en1gma: pink_vampire thanks
07:35 PM en1gma: https://paste.ubuntu.com/p/f2KGyf2Q3X/
07:37 PM pink_vampire: try to combine it with stellarium
07:37 PM pink_vampire: en1gma: ^
07:37 PM en1gma: line 46 = Y axis has moved 1000 + 1000 steps total. = 2 degrees. i need a total of 21 degrees or 21000 steps
07:38 PM en1gma: pink_vampire you are reading my mind. you think i will be able too?
07:38 PM en1gma: with these motors and arduino?
07:39 PM pink_vampire: you need to make something that can receive the signal from it
07:40 PM en1gma: but i also want to be able to give the dish a command and it point to it as far as degree elevation and degrees azimuth
07:40 PM en1gma: i need to check to make sure everything works. i probably need to get a mouse for sensors and even endstops
07:40 PM pink_vampire: I've tried to do it in the past, to upgrade mt telescope to computer controlled, but I have no idea how to make it work
07:40 PM en1gma: this would make a fun open source project
07:42 PM pink_vampire: the protocol that is the easiest is LX200
07:42 PM en1gma: i figure if i cant map the geo sync sats in my lnb freq range then i shouldnt be doing anything else like stelarium
09:43 PM CaptHindsight: http://www.cbd-3d.com/en/prod/dlp.shtml
09:45 PM CaptHindsight: STM32F407ET6 https://www.st.com/en/microcontrollers-microprocessors/stm32f407-417.html
09:45 PM CaptHindsight: + Altera Cyclone IV
09:55 PM CaptHindsight: https://www.st.com/content/st_com/en/products/microcontrollers-microprocessors/stm32-32-bit-arm-cortex-mcus/stm32-high-performance-mcus/stm32f4-series/stm32f407-417/stm32f407ze.html
10:27 PM norias: hi CaptHindsight
10:43 PM CaptHindsight: howdy, half asleep here