#robotics Logs
Oct 13 2017
#robotics Calendar
12:16 AM z64555: don't gears chatter if there's a load pushing the axels together?
12:44 AM rue_mohr: https://i.ytimg.com/vi/gsn_gRk9IpY/maxresdefault.jpg
12:44 AM rue_mohr: YES\
12:44 AM rue_mohr: THATS IT
12:44 AM rue_mohr: scrap angle iron!
12:45 AM rue_mohr: I want to make it now!
12:45 AM * rue_mohr closes his eyes and makes dzzzzt sounds...
12:47 AM rue_mohr: yes, yes...
12:47 AM rue_mohr: mmm
12:47 AM rue_mohr: dzzzzzzzz
12:47 AM * veverak got 7am
12:47 AM rue_mohr: t!
12:47 AM veverak: still not went to sleep
12:48 AM rue_mohr: veverak, stressing about it wont result in anything good
12:48 AM veverak: yeah
12:48 AM rue_mohr: just be awake till your tired and go to sleep
12:48 AM veverak: that's what I realized around 5am
12:48 AM veverak: :)
12:48 AM rue_mohr: just be awake till your tired and go to sleep
12:48 AM rue_mohr: even if you just get a half hour you'll be fine
12:49 AM veverak: hope so, however my sleeping habits are absurd this week
12:49 AM rue_mohr: so, I got two relay racks today
12:50 AM rue_mohr: https://cdn6.bigcommerce.com/s-mn92le88sf/images/stencil/500x659/z/aluminum-two-post-racks__93380.original.png
12:50 AM rue_mohr: $free
12:50 AM veverak: nice
12:50 AM rue_mohr: except the ones I got are steel
12:50 AM rue_mohr: I figure I can fit 3 3d printers, a ups, and a 1u server on one
12:51 AM veverak: nice :)
12:51 AM veverak: local electronics shop sells metallic boxes
12:51 AM veverak: with 1/2/3U shape and mountings
12:51 AM rue_mohr: :)
12:51 AM veverak: was thinking of putting my 3d printer electronics inside one
12:51 AM rue_mohr: lots of space
12:51 AM rue_mohr: or gut an old switch
12:51 AM rue_mohr: electronics recyclers have lots of those OLD 100mbit switches that nobody wants
12:52 AM veverak: not really
12:52 AM rue_mohr: ? you live in russia?
12:52 AM veverak: PSU + smoothieboard + cubieboard
12:52 AM veverak: with some spacing for proper cable management
12:52 AM veverak: -> taks some space
12:52 AM veverak: :)
12:52 AM veverak: *takes
12:52 AM rue_mohr: hmm
12:53 AM rue_mohr: let me show you my new box
12:53 AM rue_mohr: for controlling my new or old cnc
12:55 AM rue_mohr: damn, old pic
12:56 AM rue_mohr: 90424
12:56 AM rue_mohr: http://ruemohr.org/~ircjunk/images/p1090424.jpg
12:57 AM rue_mohr: its a bit different right now
12:57 AM rue_mohr: need to take more pics
12:57 AM veverak: yep
12:57 AM veverak: somehow that size
12:57 AM rue_mohr: 50% of it is a power supply thats too big and too low voltage (12V)
12:58 AM rue_mohr: some dell server supply
12:58 AM rue_mohr: its got two m328 in it, one for grbl and one for my pendant interceptor
12:58 AM rue_mohr: relay operates a 120V output for the spindle motor
12:59 AM rue_mohr: I need to make a spindle controller next
01:01 AM rue_mohr: 3x 4.5A motor drivers
01:01 AM rue_mohr: (chineese amps)
01:05 AM veverak: :)
01:06 AM veverak: hmm
01:06 AM veverak: battery is running out
01:06 AM veverak: roomate did not wake yet
01:06 AM veverak: I am actually thinking of stretching this a bit
01:06 AM veverak: I think I will wait till he wakes up, charge my laptop, tkae first train home (wanted to go there this day)
01:06 AM veverak: and will se
01:06 AM veverak: but i still need to see a doctor
01:09 AM rue_mohr: !?
01:41 AM Jak_o_Shadows: TBH, i find blocking out the noise of the computer fan, and 3d printer more valuable than voice
02:06 AM veverak: rue_mohr: not exactly a normal state for me
02:59 AM drekipus: I love building robots
02:59 AM drekipus: but when it comes time to "i have to build them"
02:59 AM drekipus: i sorta lose the effect
03:08 AM drekipus: god dammit
04:28 AM drebo: https://theoutline.com/post/2373/is-artificial-intelligence-going-off-the-rails?utm_content=buffer03038&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer
05:31 AM z64555: no, just their developers
05:44 AM drebo: just ur m0m
05:46 AM z64555: yes, yes she is
06:10 AM veverak: deshipu: here it goes
06:10 AM veverak: deshipu: I am just writing paragraph or two about Tote... in my thesis
06:17 AM deshipu: yay :)
06:17 AM deshipu: I'm famous :)
06:17 AM veverak: yeah
06:17 AM veverak: picked this as tote photo https://cdn.hackaday.io/images/2334121500903935343.jpg
06:17 AM veverak: that cable management is sweet
06:19 AM veverak: deshipu: anyway, given that I found out that algorithm I am interested in takes considerable time to finish calculation on i7 cpu
06:19 AM veverak: I was thinking of switching to tote+esp :)
06:20 AM veverak: or pi zero w
06:20 AM deshipu: how would that help?
06:20 AM veverak: makes it smaller and easier to work with, also icnreases battery time
06:20 AM deshipu: also, have you seen the beaglebone pocket?
06:21 AM veverak: and it looks like I need computer on the network to do the calculations anyway
06:21 AM veverak: nope
06:21 AM deshipu: it's the size of a microbit
06:21 AM veverak: wow, nice :)
06:35 AM veverak: hmm
03:58 PM deshipu: veverak: so it seems it has 9 internal pwms, and can do additional 25 with the PRU units
06:32 PM rue_mohr: servo or 0-100% are you needing?
06:32 PM rue_mohr: casuse you can do up to 88 pwm with a stm32, at about 12 bits
06:33 PM rue_mohr: I can do 32 on a m328
06:34 PM rue_mohr: ok I want to weld, but I need to sleep
06:34 PM rue_mohr: sleepwelding?
06:34 PM rue_mohr: prolly not a good idea
06:34 PM rue_mohr: yea, they might come out all crookid
06:35 PM rue_mohr: http://s3images.coroflot.com/user_files/individual_files/original_449442_vQUxG8G9N1Cp4ygguSKaoA9Sa.jpg
06:35 PM rue_mohr: cast that instead
06:35 PM rue_mohr: yea, I'm into casting one, but for now, lets just weld one
06:35 PM rue_mohr: so, cmon, sleep so we can play
06:37 PM rue_mohr: armyofevilrobots, what time you up till tonight?
08:39 PM Tom_itx: rue what was that cheap arm board you got?
08:43 PM rue_bed: STM
08:43 PM rue_bed: 32
08:43 PM rue_bed: f
08:43 PM rue_bed: 103
08:43 PM rue_bed: and then letters
08:43 PM Tom_itx: GET OUT OF BED!!! IT'S FRIDAY NIGHT!!
08:43 PM rue_bed: i'z exhausted
08:44 PM rue_bed: awake now, I'll stay up all night
08:44 PM Tom_itx: what is wrong with your cnc?
08:44 PM rue_bed: which one?
08:45 PM rue_bed: I need a vise....
08:45 PM Tom_itx: the one that rattles
08:45 PM Tom_itx: take up drinking? that's a vise
08:46 PM Tom_itx: is it the one you welded up the box metal frame for?
08:58 PM rue_shop3: its not ratteling tho, im confused
08:58 PM rue_shop3: there is bit chatter, but everything seems solid
08:58 PM Tom_itx: trying to cut too much?
08:59 PM rue_shop3: ? .2mm at 9mm/min?
08:59 PM Tom_itx: no
08:59 PM rue_shop3: with a 1mm bit in aluminum at 9k
09:00 PM Tom_itx: tool flex
09:00 PM Tom_itx: ?
09:00 PM rue_shop3: http://ruemohr.org/~ircjunk/projects/cnc4/p1080740.jpg
09:00 PM rue_shop3: its a short bit, just 4mm long, its a single straight flue
09:00 PM z64555: what about the pieces that its cutting. What do those look like
09:00 PM Tom_itx: 2 might do better
09:01 PM Tom_itx: and is it a wood bit or metal?
09:01 PM rue_shop3: dust
09:01 PM Tom_itx: the geometry is wrong if it's a wood bit
09:01 PM rue_shop3: its a single straight flue, carbide
09:01 PM rue_shop3: like 90 degree cutting angle
09:01 PM Tom_itx: for wood...
09:02 PM Xiao is now known as SAXiao
09:02 PM rue_shop3: wood should have a higher angle tho
09:02 PM Tom_itx: what's your collet size?
09:02 PM rue_shop3: 1/8"
09:03 PM Tom_itx: i should send you one
09:03 PM rue_shop3: I'm not using expensive bits, they break just as easy as the cheap ones
09:03 PM rue_shop3: I'm completely unsure of the cut-depth/feed rate
09:04 PM rue_shop3: I can go up to 12.3k
09:04 PM Tom_itx: half the cutter diameter depth
09:04 PM Tom_itx: feedrate can be calculated
09:04 PM rue_shop3: can I double the feed rate too
09:05 PM rue_shop3: it already takes 16.5 hours to cut out the job
09:05 PM Tom_itx: what is it?
09:05 PM rue_shop3: a clamp
09:05 PM Tom_itx: show me
09:05 PM Tom_itx: maybe i could try one here and see how it went
09:06 PM rue_shop3: hmm, I have to play with files, but I'm going to make a vise
09:06 PM rue_shop3: so, I'll get back to this
09:06 PM Tom_itx: got a model of it?
09:07 PM Tom_itx: or dimensions
09:07 PM rue_shop3: yea, but I'd have to go back to the bedroom and muff with files
09:08 PM rue_shop3: want to get this vise going
09:08 PM Tom_itx: is it 2.5d cutouts?
09:08 PM rue_shop3: yup
09:08 PM Tom_itx: how thick is the material?
09:08 PM rue_shop3: 1/8
09:08 PM rue_shop3: marine grade alum
09:09 PM Tom_itx: does it have to have a 1mm cutter?
09:09 PM rue_shop3: there is a 1.5mm slot
09:09 PM rue_shop3: in one part
09:09 PM Tom_itx: mmm, i used a 1/32" on my blue boxes iirc
09:09 PM Tom_itx: how close does that come
09:10 PM Tom_itx: maybe it was 1/16" i'd have to check
09:10 PM rue_shop3: 1.25mm
09:10 PM rue_shop3: for the 1/32
09:10 PM rue_shop3: https://i.ytimg.com/vi/gsn_gRk9IpY/maxresdefault.jpg
09:10 PM rue_shop3: mmmm
09:10 PM Tom_itx: so you could cut it all wiht a bigger cutter then use the small one for the slot
09:10 PM Tom_itx: right?
09:11 PM Tom_itx: saw that earlier
09:11 PM rue_shop3: yes, but a) little motor no like big bits
09:11 PM rue_shop3: b) tool change = evil
09:11 PM Tom_itx: yeah, i use separate files for now for more than one cutter
09:11 PM Tom_itx: it's just easier
09:20 PM rue_shop3: yay, 1" angle
10:05 PM rue_shop3: I NEED AN AIR DRYER ON MY COMPRESSOR
10:06 PM rue_shop3: trying to do sand blasting for more than 10 mins becomes insane
10:06 PM rue_shop3: ".... thats not sand.... ITS WATER"
10:17 PM Tom_itx: waterjet
10:20 PM zhanx: waterjet is a bonus right?\
11:32 PM Jak_o_Shadows: I mean, it even has the grit?
11:34 PM z64555: my dad made an air compressor for car work, his dryer was the tank
11:34 PM z64555: it was basically a verticle pipe with a water valve at one end