#linuxcnc Logs

Nov 13 2018

01:21 AM miss0r: goodmorning
01:45 AM jesseg: hrm.. How hard is it to get an A4988 stepper driver chip working...?
01:45 AM jesseg: I'm not getting any discernible current to the motor.
01:48 AM Loetmichel: ... and thats why i like the TB6560 despite the flaws they have... you can get them working very easily and with next to none external components.
01:50 AM jesseg: Loetmichel, I got these: https://www.ebay.com/itm/5Pcs-A4988-Stepper-Motor-Driver-Module-RepRap-3D-Printer-Pololu-StepStick-US/192319002218?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
01:50 AM jesseg: oh sorry for the extra URL junk
01:50 AM jesseg: in theory It should be very easy
01:50 AM Loetmichel: i know the a4988
01:51 AM Loetmichel: and the popolu modules
01:51 AM Loetmichel: i have a few 3dprinters myself
01:52 AM jesseg: Is it more complex than just setting the correct levels on the control pins then toggling the step and dir?
01:52 AM Loetmichel: they are pretty easy. but even more "mimosa" than the TB6560 IMHO
01:52 AM Loetmichel: one loud cough and they die.
01:52 AM Loetmichel: just IMHO though
01:52 AM Loetmichel: dont forget to adjust the current pot!
01:53 AM jesseg: it's set midrange
01:53 AM Loetmichel: then you should at lest get SOME current
01:53 AM Loetmichel: if not you are missing something or the chips are already dead (ESD?)
01:55 AM jesseg: it's possible the two I've tried so far are already dead - it was 5 for $8 delivered lol
01:55 AM jesseg: obviously right out of china
02:17 AM Loetmichel: :-)
02:20 AM miss0r: I have a steak in the sous vide, since last night - i will treat myself to a nice lunch today ;D
02:23 AM jesseg: Well they helped me in #reprap. Seems these little boards had a bad run and the components aren't entirely soldered down. And I looked and sure enough mine all have resistors who are soldered on one end only and even the main IC has some pins that didn't reflow.
02:24 AM jesseg: so I've submitted a request for a return/refund.
02:30 AM miss0r: jesseg: Good catch
02:31 AM jesseg: I suppose I could try putting in some solder paste and tip-drag reflowing the IC
02:31 AM jesseg: but I'll see what the seller says
02:38 AM miss0r: or you could bake it? :)
02:39 AM miss0r: I have managed to sucessfully do so on the graphics card from a laptop. It has now been working for ~5 years
02:44 AM jesseg: There's just extremely little or no solder on the pads that got missed.
02:44 AM jesseg: it's like the solder paste stencil had a clogged hole
02:44 AM jesseg: so I don't think baking it would really help. I suspect the graphics cards probably had solder in there but it had fractured due to thermal cycling. (I have heard of baking graphics boards.)
02:47 AM Loetmichel: jesseg: depends
02:48 AM Loetmichel: the leadfree solder usually melts at above 260°C... if you have an oven that can reach that high it might work
02:49 AM Loetmichel: but it will probably damage any plastic part and electrolytic on that board because the oven is to slow ramping up and down
02:49 AM Loetmichel: reflow needs a pretty precise temperature profile to work without destroying the components
02:50 AM Loetmichel: but the A4988 chip is pretty small
02:50 AM Loetmichel: just desolder it completely with hot air, reball wit lead solder, then solder it in again
02:52 AM jesseg: Loetmichel, yeah I may try that. I do have a dinky little hot air reflow station
02:52 AM jesseg: well I'm off. Good night folks.
02:52 AM Deejay: moin
04:08 AM rmu: Loetmichel: why not preheat the oven, then ramp up should be fast enough.
04:46 AM XXCoder: insanity is back https://www.vox.com/the-goods/2018/11/12/18065662/troom-troom-5-minute-crafts-youtube-diy-prank
04:46 AM XXCoder: first, weird kids channels and now this
04:56 AM jthornton: morning
04:57 AM XXCoder: back to bed I guess lol
04:57 AM XXCoder: wanted a few extra seconds nap eh ;)
05:05 AM jthornton: got a little sprinkle of snow last night
05:05 AM XXCoder: cool. hjere its very typical fall. 50f and very light rain
05:06 AM XXCoder: late fall that is
05:06 AM jthornton: tonight gets down to 20°F yikes
05:06 AM XXCoder: looks like might drop on saturaday to high 30s as low
05:07 AM jthornton: I need to get those wind blocks built and installed today
05:07 AM XXCoder: whats good way to weatherize windows?
05:07 AM XXCoder: I can feel steady small amount of cold from wundow to my back
05:08 AM jthornton: get a 2" slab of pink foam and use a blanket to make a gasket for a tight fit
05:08 AM jthornton: no light so you can sleep during the day and insulation for cold
05:09 AM XXCoder: that would cause massive mold
05:09 AM jthornton: why
05:09 AM XXCoder: its always wet on window if it was sealed in, thats why my curtains is carefully set to have gap at top and large cardboard sheet on front of it to blockk most light
05:10 AM XXCoder: not sure why
05:12 AM XXCoder: my room tend to have fairly high humidity unfortunately, up tp 70%
05:12 AM XXCoder: right now its pretty low at 52% tho
05:12 AM jthornton: because they windows are cooler than the room, can you fit a storm window on the outside?
05:13 AM XXCoder: hmm will have to look outside later
05:13 AM XXCoder: little bit late to go out and look lol
05:13 AM jthornton: or early
05:14 AM Tom_L: 13�F, Hi 34
05:14 AM Tom_L: brrr
05:14 AM XXCoder: yeah bit amgious at this time lol
05:16 AM jthornton: at least the weather is looking a bit better for Eureka Springs for the weekend
05:16 AM jthornton: https://www.amazon.com/iPazzPort-Wireless-Keyboard-Raspberry-KP-810-21SDL-RGB/dp/B0736KNSW6
05:17 AM jthornton: I wonder if that is worth trying for the Raspberry Pi???
05:17 AM XXCoder: dunno, its no blueberry keyboard thats for sure
05:17 AM jthornton: blueberry keyboard?
05:18 AM XXCoder: if you want to make one, grab a err blackberry keyboard (not blue lol)
05:18 AM XXCoder: https://www.amazon.com/Eaglestar-Quality-Replacement-Keyboard-BlackBerry/dp/B0777PCST5/
05:18 AM XXCoder: blackberry knows how to make micro keyboard. that one doesnt
05:18 AM jthornton: I'm thinking of having that in the coop as a way to interact when not using the touch screen
05:19 AM XXCoder: this is even better version https://www.amazon.com/Keypad-Blackberry-Qwerty-Keyboard-Black/dp/B003YBTWRE/
05:19 AM XXCoder: trust me, im former blackberry user, for 5 years
05:20 AM jthornton: yea but that looks like it's for a phone and there is no case...
05:21 AM XXCoder: yeah though I bet you that all you need is to power it and figure pinouts
05:21 AM jthornton: much easier to just plug one in lol
05:21 AM XXCoder: oh THAT one is just cover no circuits
05:22 AM XXCoder: but yeah I wish someone would make portable keyboard using blackberry keyboard type
05:23 AM XXCoder: because nothing else have even remotely touched that.
05:55 AM Loetmichel: rmu: usual european ovens only go to 250°C
05:55 AM Loetmichel: and have way to much volume to reflow, they are simply to slow
05:56 AM Loetmichel: i have seen (and used) small pizza ovens that work with infrared heat (no circulating fan)... in conjunction with a controller with thermopcouple they work pretty well for reflow
06:24 AM miss0r: This chinesium endmill is impressing me. 47mm DOC. 2mm WOC. 500mm/min feed at 3000rpm. Cutting aluminium with flood coolant. Doesn't even flinch
06:28 AM XXCoder: nice
06:30 AM XXCoder: https://www.youtube.com/watch?v=U2jNeObHnZY ptretty cool
06:30 AM XXCoder: its captioned
06:30 AM XXCoder: vise loks like its been underwater for years
06:33 AM miss0r: It seems the video is Danish.. Finaly something I understand :)
06:33 AM XXCoder: cool so you can read youtube captions as well as listen to it lol
06:33 AM XXCoder: thankfully he added english captions overlay so i can understand
06:35 AM XXCoder: made in usa lol
06:35 AM XXCoder: the poilstone
06:37 AM XXCoder: interesting using alum tape tp protect clean surfaces for sandblast
06:38 AM tiwake: XXCoder: ducktape works well too
06:38 AM miss0r: Indeed. I can only watch it in 30sec increments. I am running a prototype on the mill at the moment
06:39 AM XXCoder: cool
06:39 AM XXCoder: is it same one you had tram issues on?
06:40 AM miss0r: Yeah
06:40 AM miss0r: The second issue is that my coolant pump is not quite up to the task of removing the chips good enough, so I have to blast it ever so often
06:40 AM miss0r: I have alot of plans that need be done soon :)
06:42 AM miss0r: Also; chip pan needs to be emptied before the next operation: https://imgur.com/a/VAyUdub
06:42 AM miss0r: hehe
06:42 AM XXCoder: fun
06:43 AM miss0r: meh... Those chips I'm making at the moment is just alot of fluff
06:43 AM miss0r: It fills the alu container, but weighs close to nothing. Bad for economy :)
06:44 AM sync: miss0r: a friend of mine always says under 100 bars of TSC is not worth it
06:44 AM XXCoder: man that vise looks awesome afterwards
06:45 AM miss0r: sync: haha, I hear'ya. the pressure from mine looks like a broken down water tap. The kind where you'd think, the filter needs cleaning
06:46 AM XXCoder: miss0r: maybe that channel is brand new one
06:46 AM XXCoder: very nice restorations'
06:46 AM XXCoder: watching spiral jack now
06:48 AM miss0r: No spoilers! :) I *JUST* saw him get the moveable jaw off
06:49 AM XXCoder: all I said is result is very nice. :) anyway he posted only 6 videos yeah looks like new channel. nice! subbed and belled
06:49 AM miss0r: :]
06:50 AM XXCoder: i like his wash station
06:50 AM miss0r: Looking forward to seeing if it is like mine
06:51 AM miss0r: That is quite small
06:51 AM miss0r: the washing station
06:58 AM miss0r: This guy has a pretty decent assortment of rotating wire brushes :)
06:58 AM miss0r: One thing I've never understood, and probably never will: people chamfering *AFTER* threading
06:59 AM XXCoder: was wondering
06:59 AM miss0r: I've even seen abom74 do it a bunch of times
06:59 AM miss0r: or is it 79? I can't remember :)
07:00 AM XXCoder: he certainly dont stint on grease
07:02 AM XXCoder: looks like video each couple weeks or so. not too often but not super rare
07:03 AM miss0r: I wonder where he is located. :) He does nice work.
07:03 AM XXCoder: is he locayed in same place as your home, ie: you? ;)
07:04 AM miss0r: nah.. :) I don't like to file as much as he does :D
07:04 AM XXCoder: lol
07:04 AM miss0r: but I must admit, I do enjoy the odd restoration job
07:05 AM Loetmichel: miss0r: which tool diameter?
07:05 AM Loetmichel: for 47mm doc and 2mm woc?
07:05 AM miss0r: Loetmichel: It was a 12mm tool
07:05 AM Loetmichel: and wich rpm?
07:05 AM miss0r: 3000
07:05 AM Loetmichel: nice
07:05 AM miss0r: Yeah, it just chewed on and on :)
07:05 AM XXCoder: im now watching tyre inflator. wow its been... fixed before
07:06 AM * Loetmichel usually does 2mm 2 flute with 24krpm, 0,15mm doc (plunge cut) and F1200 :-)
07:06 AM miss0r: Yeah... I would love to do stuff like that, but I am limited at 4krpm for the time being
07:07 AM Loetmichel: but not because the tool cant stand more, the 604 isnt rigid enough to go deeper in one pass
07:07 AM Loetmichel: 6040
07:07 AM miss0r: I have all the rigidity in the world, just not alot of RPMs
07:07 AM XXCoder: oh he got a mill also
07:07 AM miss0r: yeah :D
07:08 AM miss0r: looks like a bridgeport style knee mill
07:08 AM * Loetmichel once had a big router that could do 4mm doc with a 2mm 2 flute in alMg3 at 1500mm/s .... that was BAAAD
07:08 AM Loetmichel: you couldnt avoid getting sprayed in alu swarf ;)
07:08 AM miss0r: hah... I've seen a few of his videos before, not realizing he is danish, I saw the jack one some time ago
07:09 AM miss0r: This is why I build an enclosure for my mill :)
07:09 AM Loetmichel: ah sorry, 3mm 2 flute
07:09 AM miss0r: I only realy run 4+ flues around here
07:09 AM miss0r: Not ideal for alu, but it works just fine
07:09 AM Loetmichel: wouldnt work well for so small
07:10 AM Loetmichel: especially not at those speeds
07:10 AM miss0r: as I don't have alot of RPMs, I need more flutes :)
07:10 AM Loetmichel: you need the room in the tool to get that amount of swarf out
07:10 AM Loetmichel: usually took a few months then i had to replace the flexible vacuum hose
07:11 AM Loetmichel: holes in every corner
07:11 AM Loetmichel: like sandblasted von the inside
07:11 AM miss0r: hehe
07:11 AM miss0r: I just let them drop to the chip pan, and shovel them out.
07:12 AM miss0r: I'm glad I have the enclosure. Using the facemill REALY throws the chips hard
07:13 AM sync: miss0r: you need moar rpm
07:13 AM miss0r: sync: Don't I know it.
07:13 AM miss0r: I've been looking at those 1:5 speeder heads.. But those things are ridiculously expensive
07:14 AM miss0r: XXCoder: I love how he uses a fork to remove the indicator needle from the meter
07:15 AM XXCoder: yeah
07:16 AM miss0r: my idea that is was a bridgeport clone is off. It actualy looks like an early maho
07:19 AM miss0r: lol. That glass he is replacing the old stuff with. I thought it was real glass for a sec :D
07:19 AM XXCoder: me too
07:19 AM XXCoder: "oh crap hes grinding glass?
07:19 AM miss0r: the grinder gave it away :D
07:20 AM miss0r: yeah.. but the lathe made me sure that it wasn't
07:20 AM XXCoder: what gave it away is lathe for me
07:20 AM XXCoder: LOL the plastic handle restore
07:20 AM miss0r: Haven't gotten there yet...
07:20 AM XXCoder: thats why I didnt detail why
07:21 AM miss0r: damn he has some serious equipment
07:21 AM miss0r: that overlay inking etc.
07:21 AM XXCoder: yeah
07:23 AM miss0r: either he is very young and attends a school with all of that equipment, or he has a company, would be my guess
07:27 AM XXCoder: did you see the handle part?
07:27 AM miss0r: just did. That is neat
07:27 AM XXCoder: yeah
07:27 AM XXCoder: well time to sleep later
07:27 AM miss0r: later
07:28 AM XXCoder: interesting how more usage of pins that is hammered to lock in place was back then
07:28 AM XXCoder: makes stuff harder to fix
07:28 AM XXCoder: anyway later
07:28 AM sync: miss0r: grinding glass is quite common tho
07:29 AM miss0r: :)
07:29 AM miss0r: sure.. but on a belt sander in an open room?
07:29 AM miss0r: I better hope not
07:29 AM Loetmichel: *COUGH* *DEEEP breathing* maaan am i out of shape... pulling a mere 12 colour laser printers out of the delivery car and put them into storage and i am out of breath. And the postman was not amused... his dispatcher didnt sent a second car so he has to do the tour 2 times because the car (VW transpoter) was full...
07:30 AM miss0r: :]
07:30 AM miss0r: cardio!
07:34 AM sync: why not miss0r?
07:35 AM miss0r: sync: glass particles are not a nice thing to have floating around
07:35 AM miss0r: Especially if it is quartz glass.
07:35 AM miss0r: Those particles can hang in the air for up to 6months before settling
07:36 AM miss0r: sure you can wear a mask so you don't inhale them. But I wouldn't want that stuff floating around and settling on the ways of my lathe ect :)
07:37 AM sync: well, eh, you are not doing it daily
07:37 AM miss0r: That I am not :)
08:19 AM rmu: halscoping the "time" pins of diverse functions called in the servo thread is most interesting
08:20 AM rmu: it reinforces that the raspberry pi SOC really is a piece of crap
09:27 AM weenerdog: howdy
09:31 AM weenerdog: howdy CubicleNate
11:17 AM jesseg: LOL so the stepper modules were all fine. Some joints had exceedingly little solder but with a magnifier I could see it. My stepper has the commons of the coils tied together and that was causing it to shut down :P
11:29 AM weenerdog: i'm trying to blow up rhinoceros making a heightfield with 4 million control points lol
11:30 AM weenerdog: hey it did it
11:54 AM weenerdog: lol metal on metal
12:08 PM ziper: https://www.youtube.com/watch?v=6b5XHOuxk2U
12:53 PM Lcvette: pcw_mesa i am gonna need to replace the srive with an analog drive on that little rhino but i don't see that the 7i85s can do that, am i wrong there?
12:54 PM pcw_home: the drives are bad?
12:55 PM Lcvette: just the spindle drive
12:56 PM Lcvette: im gonna pop in a kbic dc controller with a 0-10v analog
12:57 PM pcw_home: You could add a SPINX1
12:58 PM Lcvette: is that a card?
12:58 PM pcw_home: Yeah, an isolated potentiometer replacement device
12:59 PM pcw_home: PWM --> analog
12:59 PM Lcvette: ah not on mesa site then
12:59 PM pcw_home: It would use some free 7I85S PWM outputs (search on store)
01:00 PM Lcvette: http://store.mesanet.com/index.php?route=product/product&product_id=205
01:00 PM Lcvette: found it
01:01 PM pcw_home: bbl need to drag my butt to work...
01:01 PM Lcvette: k
01:01 PM Lcvette: thankis peter!
01:22 PM rene_dev_: pcw_home there is a guy on a german cnc forum trying to hook up a 7i48 to the parport with mach3
01:54 PM pcw_mesa: thats not too likely to work well...
02:07 PM rene_dev_: I know... I have no idea what his intentions are
04:13 PM Deejay: gn8
05:13 PM gloops: all quiet on the western front
05:13 PM Tom_L: and the eastern one
05:14 PM gloops: quiet on all fronts
05:44 PM _unreal_: FINALLY I got to GEL most of my plug mold for my RPI/LCD-RPI clone
05:44 PM _unreal_: gel=gelcoat like the stuff on boats
05:46 PM _unreal_: tomorrow when I go to work, at break I'll paint the other half of the thing. Then once thats done. flip it and do one more coat and ugh. one more on the bottom. then I can sand the thing and FINALLY I can build my MOLD off of the plug.... and start building the real part to house my LCD
05:46 PM _unreal_: omg
05:46 PM _unreal_: been away from the shop so much doing BS work for so long
05:46 PM _unreal_: like 2 montsh
05:46 PM _unreal_: months
05:50 PM gloops: is this like a gelcoat on the exterior? or the inside of a mold?
06:18 PM ziper: my long axis rail is in
06:18 PM ziper: one of the cars is a little tight
08:16 PM {HD}: Anyone using fusion 360? When I do an export or saveas I can never do anything with the files because they are “in use” has anyone experienced this?
08:22 PM {HD}: If I wait about 5mins and try again it normally works...
08:30 PM weenerdog: {HD}, https://forums.autodesk.com/t5/fusion-360-design-validate/file-stuck-showing-quot-in-use-by-me-quot-and-cant-delete-it/td-p/6296440
09:50 PM {HD}: weenerdog: thanks but that doesn’t appear to be my same problem.
09:51 PM {HD}: It is still doing it for instance if I export an stl I have to wait 5 mins before I can open it in simplify3d.