#robotics Logs

Jul 07 2015

00:15 Jak_o_Shadows http://jak-o-shadows.github.io/picturedump/3dp/lego.jpg
00:19 RifRaf heh the kids are gonna hassle you about that lego :)
00:19 Jak_o_Shadows The real lego brick clipped onto the top, with a little effort
00:19 Jak_o_Shadows I used support on the inside, which I can't get out
00:20 RifRaf thats a good selling point i guess
00:53 Jak_o_Shadows ugh, slic3r, I don't want that solid
02:52 Jak_o_Shadows Damn. It's a bit big
03:48 rue_bed your printer needs some adjustment
03:49 rue_bed whats the fudge multiplier set to for your filament?
03:50 Jak_o_Shadows 0, except for the first layer, which I now have at 150% (from 250% in that photo)
03:52 rue_bed if you havn't adjusted the fudge multiplier, you havn't adjusted the machine
03:52 rue_bed I can tell you it looks like you need to make your layers thinner and bring the multipler up
03:52 rue_bed by about .06
03:53 rue_bed so I'd say 1.06
03:53 rue_bed how high were the layers?
03:53 Jak_o_Shadows 0.2
03:53 rue_bed oh and turn the speed down by 50%
03:54 rue_bed try the print again with those adjustments and lets take a look
03:54 Jak_o_Shadows Sorry, too much of a headache to print again today
03:54 rue_bed ?
03:54 rue_bed how so?
03:54 Jak_o_Shadows ABS fumes give me a headache
03:54 rue_bed too late I can see
03:55 rue_bed hmm, pretty sure that means your too hot, or your just sensitive
03:55 rue_bed what is the REAL nozzel temp?
03:55 Jak_o_Shadows Sensitive I think. Superglue does me in.
03:55 Jak_o_Shadows It's set to 21t
03:55 rue_bed (not what the printer thinks it is)
03:55 Jak_o_Shadows No idea.
03:55 rue_bed 210?
03:55 rue_bed c?
03:56 Jak_o_Shadows 215, after 230 first layer.
03:56 Jak_o_Shadows Yeah, because imperial units only cause pain.
03:56 rue_bed dosnt sound unreasonable number wise
03:57 rue_bed I suggest using a thermometer and checking its right
03:57 rue_bed if its off by 10%
03:57 rue_bed ...
03:57 Jak_o_Shadows I don't have a suitable thermometer :(
03:57 rue_bed idea
03:57 rue_bed its only 1:30am, post me your stl
03:58 Tom_itx rue_bed, check your watch again
03:58 rue_bed yea yea
03:58 rue_bed and what are you doing up at ,.. 3am?
03:58 Tom_itx sleep walking
03:59 rue_bed ah, join the club
03:59 rue_bed (this is it)
03:59 rue_bed its too hot to be awake during the day
03:59 Tom_itx this pain only allows me to lay down just so long
03:59 rue_bed you still refuse to let me help with that eh?
03:59 Tom_itx i doubt you can
04:00 Jak_o_Shadows http://jak-o-shadows.github.io/picturedump/3dp/2x2%20brick.stl is it, if you really want
04:00 Tom_itx the doc seems to be a little
04:00 rue_bed well refusing is a good way to make sure
04:01 rue_bed Tom_itx, he gave you drugs?
04:01 rue_bed instead of properly diagnosing and treating the root issue?
04:01 Tom_itx no drugs
04:01 Tom_itx the problem is C5..C7
04:01 rue_bed there might be hope if he's not just throwing drugs at it
04:02 Jak_o_Shadows Those are pretty high up.
04:02 rue_bed Tom_itx, he dosnt' know if its 56 or 67?
04:02 Tom_itx the bundle of nerves associated with the shoulder and arm
04:03 Tom_itx probably closer to C7
04:03 rue_bed Jak_o_Shadows, its 1:40am, I'll have it printed by 6:15 am, about 7:20 I can check it
04:03 Jak_o_Shadows Thanks!
04:03 rue_bed Tom_itx, is your arm shakey or just in pain
04:03 Jak_o_Shadows I'll be back online probably around 4pm your time? or something like that
04:03 Tom_itx no shake
04:03 rue_bed hah
04:05 rue_shop3 crap, someone rebooted my computer
04:09 rue_shop3 Jak_o_Shadows, why the hell is it upside down!?
04:11 Jak_o_Shadows I have no idea. I got it from thingiverse
04:11 rue_shop3 oooh, there's your problem
04:11 rue_shop3 its probably not printable
04:11 Jak_o_Shadows hahaha
04:11 Jak_o_Shadows Nah, it wasn't too bad
04:11 Jak_o_Shadows Probably did too much support
04:12 rue_shop3 it dosn't need any support
04:13 Jak_o_Shadows I was a tad worried about bridging. I haven't done any tests on that yet
04:13 Jak_o_Shadows Specifically the circles on top
04:13 rue_shop3 you built your machine right?
04:15 rue_shop3 I shouldn't have to zoom in this much,
04:15 rue_shop3 how big is the real brick?
04:16 Jak_o_Shadows er, scale it up by 100
04:16 Jak_o_Shadows so it ends up being about 15x15ish
04:16 rue_shop3 ugh
04:16 rue_shop3 I swear thingverse is useless
04:16 rue_shop3 people posting unprintable crap
04:16 rue_shop3 your sure its not 2.54x out?
04:17 Jak_o_Shadows Pretty sure. It ended up snapping to the other lego brick pretty well
04:17 rue_shop3 not 100 no
04:18 rue_shop3 ugh
04:18 rue_shop3 I could have modeled a brick from scratch by now
04:18 Jak_o_Shadows haha
04:19 rue_shop3 it shoudl be 16mm
04:19 rue_shop3 ...
04:19 Jak_o_Shadows It should end up ~15x15x10
04:20 rue_shop3 x10
04:20 rue_shop3 x100 resulted in 16cm
04:22 rue_shop3 x10.13
04:24 rue_shop3 its a bad model by the way
04:25 rue_shop3 the numbers are out
04:28 rue_shop3 ok it estimates 1.5 hrs at 50% speed
04:29 rue_shop3 yea, I think that model sucks
04:29 rue_shop3 I'll make you a real one later, remind me!
04:29 Jak_o_Shadows hahaha.
04:29 Jak_o_Shadows i'm gonna look at the ipt
04:37 Jak_o_Shadows the creator has an aweful sketching style in inventor
04:37 Jak_o_Shadows work planes everywhere
04:37 Jak_o_Shadows Oh that's why it's difficult. He recessed the underside of the lugs
04:38 Jak_o_Shadows That's kinda unnecessary
04:42 rue_bed I can make a good one in like 20 mins
04:42 Jak_o_Shadows So could I. It's a square with like 5 cylinders.
04:46 rue_bed in 3d yea, in 2d its 3 layers
04:48 Jak_o_Shadows mmm
09:13 blib1 Hyratel1: do you have a parts list for that 4-wheel robot of yours? Nice build.
09:57 rue_shop3 blib1, me?
10:02 blib1 hi rue_shop3
10:02 blib1 what are you upto today?
10:02 blib1 Am looking for a camera for my bot now
10:04 SpeedEvil What's your processor and comms?
10:41 deshipu guys, anybody has an idea where I could buy just the plastic "lens" like this? http://www.ebay.com/itm/Used-Roomba-500-600-Black-Bumper-IR-dock-sensor-530-550-555-560-570-580-585-620-/171812521878?pt=LH_DefaultDomain_0&hash=item2800d30796
10:41 deshipu this one is a bit expensive, because roomba
10:48 SpeedEvil A mirrored cone pretty much is what you want
11:01 deshipu right, but searching for "mirrored code" yields nothing on my favorite shopping websites
11:01 deshipu nothing useful, anyways
11:18 blib1 deshipu: lens? plastic? application? what mount?
11:40 SpeedEvil http://cutter.com.au/ - lenses may be suitable
11:41 SpeedEvil deshipu: the same thing is needed for making a circle of light as picking up a circle
11:44 SpeedEvil http://www.aliexpress.com/item-img/Min-10-New-fashion-Women-s-Metallic-Mirrored-Metal-Circle-Hair-Tie-Hair-Cone-Band/32310428543.html - point a phototransistor with a narrow FOV at this, and it'd be about right
11:59 Hyratel1 blib1, not ready at hand but I can break it down some
12:00 Hyratel1 2x each CIM motor, CIMple box (each on 30A autoresetting breaker)
12:09 deshipu blib1, SpeedEvil: thanks for the suggestions
12:09 deshipu turns out a ball of polymorph works well enough
13:22 SpeedEvil yay
19:46 ball Woah, there's a Robotics channel!
19:46 SpeedEvil yes
20:00 ball hello theBear!
20:01 ball Has there been any BBC MicroBit discussion in here today?
20:02 Jak_o_Shadows haha, well, I just read the HaD article.
20:04 ball I don't know what HaD is.
20:04 ball Oh, hack-a-day?
20:04 Jak_o_Shadows yup
20:04 ball I haven't seen that yet.
21:54 rue_house Jak_o_Shadows, one of two things happened
21:54 rue_house the printer plugged, or the top plate of the brick is stupidly thin
21:55 Jak_o_Shadows ?
21:55 Jak_o_Shadows printed plugged?
21:55 ball Are there affordable two or three-axis robot arm kits?
21:55 rue_house the top didn't really print
21:56 rue_house ball, is $30 affordable?
21:56 ball rue_house: Very much so!
21:57 rue_house http://ruemohr.org/~ircjunk/robots/arm8/slide.htm
21:57 rue_house like that?
22:00 ll watches and lea
22:02 rue_shop3 have many toools?
22:03 ball Some.
22:10 rue_shop3 k, have any srevos?
22:11 ball Not yet.
22:12 rue_shop3 Jak_o_Shadows, bah, my filaments hanging up
22:14 Jak_o_Shadows I have to manually unspool mine at the moment, because teh box isn't on
22:15 rue_shop3 ball, well, have an arduino controller of any kind?
22:21 ball rue_shop3: I have some sort of tiny AVR board I think.
22:59 rue_shop3 Jak_o_Shadows, I need to design you a proper lego brick
22:59 rue_shop3 why cant people get something as simple as the wheel right,
22:59 Jak_o_Shadows haha. I an do it. Today was going to be installing centOS, then octoprint
23:00 rue_shop3 instead of just thinking it out, people copy other peoples broken wheels
23:00 rue_shop3 usually bad copies
23:01 Jak_o_Shadows Especialy in 3D printing I see people that don't understand the capabilities of FDM printers
23:01 rue_shop3 oh! were getting close to rain
23:04 Hyratel1 broken wheels?
23:07 rue_shop3 yea, nobody knows how to make a working wheel anymore because at some point people just started making bad copies of other peoples wheels
23:07 rue_shop3 now there are no wheels that work right
23:08 Hyratel1 wat
23:08 Hyratel1 ex..plain?
23:08 rue_shop3 someone thought a square wheel would have more traction, nobody who copied that wheel decided round was a better idea
23:08 rue_shop3 its happening all over the world
23:08 Hyratel1 i've never really fooled with printers before
23:08 Hyratel1 wiat what
23:09 Hyratel1 what even is
23:09 Hyratel1 what
23:09 Hyratel1 I am so confused
23:09 rue_shop3 people decided to add built in suspension to the square wheels to smooth out their ride
23:09 rue_shop3 instead of making them round
23:09 Hyratel1 you're making even less sense
23:10 Hyratel1 is this a meta-description of the 3D printing community or something
23:10 rue_shop3 THE WORLD
23:10 Hyratel1 c_c
23:12 Jak_o_Shadows Phone. "Unable to use flash because of the cold weather"
23:12 Jak_o_Shadows what.
23:14 Hyratel1 rue_shop3, I know the world is being shitty and not thinking for itself
23:15 Hyratel1 but that was a harsh topic fade
23:17 rue_shop3 Jak_o_Shadows, screw this wheel, can I show you how to design a REAL lego brick?
23:20 Jak_o_Shadows If you want. What CAD program would you use?
23:21 rue_shop3 librecad
23:21 Jak_o_Shadows I have never used 2D cad for 3D modelling
23:22 rue_shop3 its WAY faster
23:22 rue_shop3 when its applicable
23:23 Jak_o_Shadows TBH, I started with blender (not for CAD, just modelling), then used a 2D one for a little while, then swapped to Inventor
23:31 rue_shop3 ok the 2d is finished, (had to restart, dimention was wrong and it was easier to redo)
23:36 rue_shop3 checking model....
23:37 rue_shop3 stl finished
23:37 rue_shop3 slicing...
23:38 rue_shop3 Jak_o_Shadows, you still there?
23:39 Jak_o_Shadows yup yup
23:39 rue_shop3 posting on thingverse...
23:45 rue_shop3 Jak_o_Shadows, http://www.thingiverse.com/thing:915949
23:45 rue_shop3 I dont have a photo cause its still printing
23:45 rue_shop3 now THATS hot off the press
23:46 rue_shop3 hahah I forgot to load my model, I'm printing the wrong thing
23:47 rue_shop3 "I printed all the new papers last night, took till 4 in the morning" "did you notice you printed last weeks paper?"
23:48 Jak_o_Shadows libreoffice saves to scd?
23:48 rue_shop3 libreCAD
23:48 Jak_o_Shadows yup, that's what I meant.
23:48 rue_shop3 free linux cad software
23:48 rue_shop3 it saves to dxf
23:49 rue_shop3 read the instructions in the thingiverse page!
23:49 rue_shop3 ugh
23:49 rue_shop3 :)
23:49 wolfmanjm why not just do the whole thing in openscad?
23:50 rue_shop3 a) takes longer to do
23:50 rue_shop3 b) openscad will take WAY longer to render the model
23:50 rue_shop3 c) are you sure that dimension actaully came out right?
23:51 wolfmanjm I have no problem with dimensions with openscad... except you need to deal with the polyhole issue I have a function for that
23:51 rue_shop3 mm I forgot the offset...
23:51 rue_shop3 see what I get
23:52 rue_shop3 wolfmanjm, I have had AWESOME success with extruding dxf's
23:52 Jak_o_Shadows That is a method I would use.
23:52 Jak_o_Shadows because stuff doing stuff in openscad
23:52 rue_shop3 it goes faster and lets you do some things much eaiser than using CSG
23:53 rue_shop3 it typically takes this machine about 15 seconds to compile and render a stacked extrusion
23:53 wolfmanjm gonna need some good bridging capability for that to print well :)
23:53 rue_shop3 rendering a CSG takes it 5 to 10 mins
23:53 rue_shop3 good?
23:53 rue_shop3 thats not even a minor bridging challange...
23:54 rue_shop3 I'v been quite surprised how much buildout a person can get too
23:55 wolfmanjm I guess i find openscad easier to use than CAD programs ;) but it is an interesting idea, I just hate graphical CAD programs
23:55 rue_shop3 I'm used to them
23:55 rue_shop3 I can get lots of nice radii and chamfers in the XY plane :)
23:56 rue_shop3 and complex curves
23:57 Jak_o_Shadows Course, you'll prise autodesk inventor out of my cold dead hands