#robotics Logs
Jun 03 2018
#robotics Calendar
12:00 AM Jak_o_Shadows: 55 isn't all that fast. . Like, what do your expressways or freeways or highways do?
12:03 AM mrdata: here in ontario, 100 km/h is the posted limit
12:03 AM mrdata: but depending on conditions, traffic may average faster on divided controlled access freeways
12:15 AM Jak_o_Shadows: similar here - therews small atretches of 110kmh, but they aren't very big.
12:15 AM Jak_o_Shadows: 80kmh is pretty common.
12:34 AM Jak_o_Shadows: Oh, and when I say 110km doesn't have big stretches, I mean while within a couple of hundred km from the capital city of the state
12:34 AM Jak_o_Shadows: Once you get 300+km, every road is 110
03:43 AM rue_mohr: here 80km/hr is the highest you see
06:30 AM Jak_o_Shadows: weird, i thought canada was big too
09:20 AM veverak: btw:
09:20 AM veverak: I love wacoom bamboo http://squirrel.veverak.org/WCM0077.png
10:27 AM sports`ball`net: wow did you use a dark grey bg with a black pen
10:27 AM veverak: nope, it's transparent iamge
10:27 AM veverak: *image
10:27 AM veverak: :)
10:27 AM veverak: sports`ball`net: and I used paper
10:28 AM sports`ball`net: ah
10:28 AM veverak: https://images.duckduckgo.com/iu/?u=http%3A%2F%2Fwww.laptopmag.com%2Fimages%2Fuploads%2Fppress%2F45230%2Fbamboo_folio_2.jpg&f=1
10:28 AM veverak: this thing
05:01 PM veverak: sometimes you go full fancy
05:05 PM SpeedEvil: Never go full fancy.
05:08 PM veverak: I just did and I am happy
06:00 PM rue_mohr: what happened to using fancy a little bit at a time
06:01 PM Tom_itx: https://www.bloomberg.com/news/articles/2018-06-03/microsoft-is-said-to-have-agreed-to-acquire-coding-site-github
06:02 PM rue_mohr: wtf
06:03 PM rue_mohr: well there goes github
06:03 PM rue_mohr: so ALL gibhub source just became property of microsoft
06:04 PM Tom_itx: wasn't that how they got their start to begin with?
06:04 PM rue_mohr: yea, microsfot steals code, thats basically all they do
06:05 PM rue_mohr: everything they have they have bought or stolen
06:05 PM rue_mohr: microsoft will end up making it unusable
06:06 PM rue_mohr: either by charging for it, or making the auth process so horrid its not worth trying to use
06:10 PM Tom_itx: Nadella increasingly moves the company away from complete dependence on the Windows operating system to more in-house development on Linux......
06:10 PM rue_mohr: thats ms liunux?
06:10 PM Tom_itx: idk
06:11 PM rue_mohr: microsoft will migrate to a linux kernel, then gradually make it what windows is today
06:12 PM rue_mohr: have you seen the microsoft germany stander posters?
06:12 PM Tom_itx: they can't screw up windows any worse so they need a new project
06:12 PM rue_mohr: against linux?
06:12 PM Tom_itx: no
06:14 PM Tom_itx: you better collect the repositories you want now and keep them offline
06:18 PM rue_mohr: you cant erase from github, microsoft basically now owns any software you ever put there
06:22 PM rue_mohr: I cant find any part numbers for the 'logic transitors'
06:22 PM Tom_itx: it still has to honor the open source agreements that are bound with the software
06:22 PM rue_mohr: they have resistors built into the bases and stuff
06:23 PM rue_mohr: there was a huge doto about a year ago when github changes its usage agreement
06:23 PM rue_mohr: thingiverse did it too
06:23 PM rue_mohr: all thingiverse objects are owned by .. whats that company with the messed up printers?
06:23 PM Tom_itx: https://www.nexperia.com/products/bipolar-transistors/resistor-equipped-transistors-rets/#/p=1,s=0,f=,c=,rpp=,fs=0,sc=,so=,es=
06:24 PM rue_mohr: makerbot
06:24 PM rue_mohr: erm, kinda and not really
06:24 PM rue_mohr: they used to use them in vcrs, leaded parts
06:25 PM Tom_itx: they used to use tubes in TV's too
06:26 PM rue_mohr: :)
06:26 PM rue_mohr: it was sure nice when I got a lcd monitr and didn't have to worry about grounding myself every time I went to touch an elecronics project
06:29 PM Tom_itx: did you see the final kernel build script? it should work on ubuntu, debian or mint
06:30 PM Tom_itx: not sure how often you would do that...
06:40 PM rue_shop4: didn't see it
06:41 PM rue_shop4: the challanges weren't hard
06:41 PM rue_shop4: tho
06:42 PM rue_shop4: I cant get myself going
06:42 PM rue_shop4: arg
06:42 PM rue_shop4: zhanx, wheres your printer at?
06:48 PM veverak: http://squirrel.veverak.org/Screenshot%20from%202018-06-04%2001-12-39.png
06:48 PM veverak: final version propably?
06:52 PM zhanx: rue_shop4 sorry long weekend
06:53 PM rue_shop4: veverak, uh ho, those look like REALLY expensive digital servos
06:53 PM rue_shop4: like $210 ea
06:54 PM veverak: nah
06:54 PM zhanx: they do
06:54 PM zhanx: by the mounts on them
06:54 PM rue_shop4: veverak, is the project going to be more or less than $1000
06:55 PM veverak: rue_shop4: $22 each
06:55 PM veverak: :)
06:55 PM rue_shop4: ?
06:55 PM veverak: means 264$ for all servos
06:55 PM veverak: http://www.robotis.us/dynamixel-xl-320/
06:56 PM zhanx: fyi those points are going to suck for traction for it
06:57 PM zhanx: can i give a couple of pointers i learned from my octopod?
06:57 PM veverak: zhanx: I was thinking of something soft at the ends
06:57 PM veverak: differently colored balls of something soft would be nice
06:57 PM veverak: zhanx: do tell
06:58 PM zhanx: its looks like your battery and Uc are an after thought as part of the bot
06:59 PM veverak: yep
06:59 PM veverak: that is version 1
06:59 PM zhanx: When i designed my, I used them as part of the frame for stiffing
06:59 PM veverak: version 1 has long cable :)
06:59 PM veverak: zhanx: yeah, got that in my mind too
06:59 PM veverak: but I just intent to change the shape of the 'body', legs should be same
06:59 PM zhanx: my version 1 also had a long cable
07:00 PM zhanx: legs need wire run locations
07:00 PM veverak: hmm
07:00 PM veverak: I should design a mount for a microcontroller though
07:00 PM zhanx: wire management was like design 4 for me the learning the hard way
07:01 PM veverak: zhanx: the XL320 is chainable
07:01 PM veverak: I have idea
07:01 PM veverak: (how to manage wires)
07:01 PM veverak: and I have zip ties
07:01 PM veverak: :)
07:01 PM zhanx: zip ties are great till it drops and breaks a leg joint
07:02 PM zhanx: like said just lessons i learned from mine when i did it. nothing you can to follow
07:02 PM veverak: yeah, for a 'more sturdy version' I will introduce proper cable management, good thought
07:02 PM veverak: zhanx: this is designed for lab. environment more or less
07:03 PM zhanx: k mine was for fun and outdoors etc
07:03 PM veverak: I am making new model of robot, to use to test my motion planner
07:03 PM veverak: next goal: create a reasonable collision models
07:04 PM zhanx: rue_shop4: I got to work on the bee garden tomorrow and the main garden for most of the day after work. So i can have a garden this year
07:04 PM zhanx: veverak: sounds like fun
07:04 PM veverak: yup
07:04 PM veverak: actually similar code
07:04 PM veverak: ;)
07:05 PM veverak: zhanx: also, I did not noted: entire thing has base code generate by haskell script
07:05 PM veverak: that also generates URDF definition for ROS
07:05 PM veverak: and renders STL file
07:05 PM veverak: so, I should be able to insert it into simulator :)
07:05 PM zhanx: cheater
07:28 PM rue_shop4: hey I successfully rewound a motor!
07:32 PM veverak: I finished my haskell coding for tday
07:38 PM rue_shop4: hows your fortran FFTs?
07:38 PM veverak: I don't know fortran :/
07:38 PM rue_shop4: http://ruemohr.org/~ircjunk/programming/FOUR1.txt
07:39 PM rue_shop4: quick, figure it out!
07:39 PM veverak: I should go to sleep
07:39 PM veverak: it's 2 AM
07:39 PM veverak: but there is one thing I need
07:40 PM veverak: decomposition of surface mesh into convex hulls
07:40 PM veverak: nah, let's sleep
08:38 PM Tom_itx is now known as Tom_L
08:41 PM rue_shop4: the first 7.5' ring is 'ready'
08:41 PM rue_shop4: " 7.5' "
08:41 PM rue_shop4: came out about 7'9"
08:41 PM rue_shop4: :S
08:41 PM rue_shop4: why do my projects always get bigger on me?
08:42 PM rue_shop4: 7'6" is HUGE
08:42 PM rue_shop4: and its the small ring...
08:43 PM rue_shop4: how big IS a 12' robot!?!
09:01 PM rue_shop4: would anyone like to help me with a robotics project?
09:01 PM rue_shop4: I need a gyro controlled gimbal
09:01 PM orlock: love to, but barely enough time to work on mine :-(
09:01 PM rue_shop4: its a 8' gimbal
09:01 PM rue_shop4: I'll buy ya a gyro
09:01 PM orlock: whats that in metric?
09:02 PM rue_shop4: ' is feet " is inches
09:02 PM rue_shop4: 2.4m gimbal
09:02 PM rue_shop4: I need them to 1:1
09:02 PM rue_shop4: servo gimbal
09:37 PM rue_mohr: huh
09:37 PM rue_mohr: https://www.aliexpress.com/item/FREE-SHIPPING-SOT23-PDTA123ET-PDTA123-100PCS-in-Stock/32488310310.html
11:02 PM rue_mohr: IS ANYONE OUT THERE
11:02 PM rue_mohr: rue, its the internet...
11:02 PM rue_mohr: so?
11:02 PM rue_mohr: nobody can hear your screaming
11:05 PM Tom_L: bearings to connect the hoops?
11:06 PM rue_mohr: yea I'm gonna have to work some out
11:06 PM rue_mohr: but I need to find plate to make a span in between the rings
11:06 PM rue_mohr: its not just part sample pages that are stupidly expensive from china, just page protectors in general are
11:09 PM Tom_L: would cost too much to ship from here
11:09 PM Tom_L: i have plate
11:09 PM Tom_L: lots of it
11:09 PM rue_mohr: steel?
11:09 PM rue_mohr: well, yea
11:09 PM Tom_L: how thick?
11:09 PM rue_mohr: I have to buy/fiond it here
11:10 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/local_stock/6.jpg
11:10 PM rue_mohr: oh, between 1/8 and 1/4
11:10 PM Tom_L: i wish i'd have gotten more of the BRAND NEW junk 1/4" plate i made my mill out of
11:10 PM rue_mohr: dear god, everything to do with A5 binders is pricey as hell
11:11 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Drillpress.jpg
11:11 PM Tom_L: i got a good hunk of that plate left
11:11 PM rue_mohr: yes, seen that
11:12 PM Tom_L: but you're too far away
11:12 PM Tom_L: they had a whole pile of that stuff and i got one of the smaller pieces
11:12 PM rue_mohr: https://www.aliexpress.com/item/12Pcs-Mini-Antique-Brass-Wooden-Case-Hasp-Jewelry-Gift-Box-Decorative-Hasp-Latch-for-Home-Finuture/32820404516.html
11:12 PM Tom_L: they'd just gotten it in
11:12 PM rue_mohr: ^^ I think these are the ones that spring open when you least need them to!
11:13 PM Tom_L: i'd expect no less for 12 for a buck fifty
11:13 PM rue_mohr: https://www.aliexpress.com/item/High-Quality-Antique-Chinese-Locks-10Pcs-Antique-Box-Buckles-Shiny-Surface-Bronze-Tone-wooden-box-latches/32790253694.html
11:13 PM rue_mohr: these ones seem to be.... upside,.... down....
11:14 PM rue_mohr: geez, I didn't know I was so pickey
11:14 PM rue_mohr: did you see the reamer box?
11:14 PM Tom_L: i don't think so
11:14 PM Tom_L: mine are all piled in a drawer
11:15 PM rue_mohr: http://ruemohr.org/~ircjunk/projects/reamercase/p1100094.jpg
11:15 PM rue_mohr: http://ruemohr.org/~ircjunk/projects/reamercase/p1100092.jpg
11:15 PM rue_mohr: I didn't want mine eating each other
11:15 PM Tom_L: you made it?
11:15 PM rue_mohr: and I wanted to be able to hide them from people who think their drillbits
11:15 PM rue_mohr: yea
11:15 PM Tom_L: nice
11:15 PM rue_mohr: the stupid cnc job was a bit too big for the machines here, so I had armyofevilrobots help me out
11:16 PM Tom_L: i did a box like that for my old calipers once but they finally died
11:16 PM rue_mohr: ** 8.5cm MAX**
11:16 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/temp/calipers.jpg
11:17 PM Tom_L: ballnosed the finger slots for the gage block
11:17 PM rue_mohr: ah, and the inset hinges
11:18 PM rue_mohr: my calipers never get a chance to be put away
11:18 PM Tom_L: that was a long time ago
11:18 PM rue_mohr: looks good
11:18 PM Tom_L: well i used them alot but kept them
11:18 PM rue_mohr: you made that box?
11:18 PM Tom_L: on the sherline
11:18 PM rue_mohr: yep, shorter than mine
11:19 PM Tom_L: i got an 8" pair now
11:19 PM Tom_L: glad i got the bit longer ones
11:19 PM rue_mohr: I boofed the forethought, I was quite dissapointed in myself when I tried to stick it in a machine
11:23 PM Tom_L: those all metric reamers?
11:23 PM rue_mohr: yes
11:23 PM Tom_L: i've got some of both
11:23 PM Tom_L: but i buy them as needed
11:23 PM Tom_L: alot of them are used
11:23 PM rue_mohr: I started making a set and the price got stupid, so I bought a whole set, thats why there are two 6mm
11:24 PM rue_mohr: already had one
11:24 PM Tom_L: i got some 10mm ones with a reverse flute
11:24 PM rue_mohr: reverse?
11:24 PM Tom_L: made for gun bores
11:24 PM rue_mohr: why?
11:24 PM Tom_L: not straigt or twisted normal but twisted reverse
11:24 PM rue_mohr: do bullets have to spin the right way?
11:24 PM Tom_L: i guess they pull them instead of push them thru the bore
11:25 PM Tom_L: and to miss the riflings
11:25 PM * rue_mohr looks at zhanx
11:25 PM rue_mohr: ok
11:25 PM Tom_L: look a bit odd but work fine
11:27 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/cutter/cutter3.jpg
11:27 PM Tom_L: one i was looking at the other day
11:27 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/cutter/cutter2.jpg
11:27 PM Tom_L: the right one was mine just for comparison
11:28 PM rue_mohr: I slightly blew the depth of one of the slots too, had to touch one slot up witht eh dremel just a bit on an end
11:28 PM rue_mohr: uh, for gears?
11:28 PM Tom_L: no idea
11:29 PM Tom_L: some guy needed a 55 deg cutter, so i was trying to find something cheap that might work
11:29 PM rue_mohr: looks like its for a really specific angled gear cutter
11:29 PM Tom_L: yeah
11:29 PM Tom_L: it would have had to be ground for his purpose but he found another one
11:29 PM Tom_L: the guy only wanted $5 for it
11:30 PM Tom_L: basically by the pound
11:30 PM Tom_L: he weighed it
11:32 PM Tom_L: i got a countersink from him for free i think for all those bolt heads on the mill plates
11:33 PM Tom_L: it was broke but it did what i needed
11:33 PM rue_mohr: oh I need to post...
11:34 PM Tom_L: http://www.apexinds.com/blog/wp-content/uploads/counterbore-drill.jpg
11:34 PM rue_mohr: http://ruemohr.org/~ircjunk/robots/sparrow1/p1100134.jpg
11:34 PM rue_mohr: thats the small ring
11:34 PM rue_mohr: 8-|
11:34 PM Tom_L: but mine was hollow and you put a shaft in it and set screw it in place
11:35 PM rue_mohr: why do my projects always come out so much larger than I imagine them?
11:35 PM rue_mohr: it only gained an inch or two
11:35 PM rue_mohr: 7'9" instead of 7'6"
11:35 PM rue_mohr: +-
11:35 PM Tom_L: not too bad
11:35 PM rue_mohr: I cant tell if its actually round
11:35 PM Tom_L: mostly
11:35 PM rue_mohr: yea, its mostly flat too
11:36 PM Tom_L: hard to tell from a pic
11:36 PM rue_mohr: yea
11:36 PM Tom_L: but i can see some spots
11:36 PM rue_mohr: its bigger than I am, so, its kinda hard to hold and lookat
11:36 PM rue_mohr: need 12' robot!
11:36 PM rue_mohr: now I have to make another
11:36 PM Tom_L: what's it gonna be for?
11:36 PM rue_mohr: and then 4 more
11:37 PM rue_mohr: https://www.xtreme-events.de/wp-content/uploads/aerotrim-verleih.jpg
11:37 PM rue_mohr: gyro cage for controlling 12' mecha from OUTSIDE OF IT
11:37 PM Tom_L: they used heavier pipe
11:37 PM rue_mohr: I know
11:37 PM rue_mohr: https://sc02.alicdn.com/kf/UTB8qzWIpGrFXKJk43Ovq6ybnpXa3/229787332/UTB8qzWIpGrFXKJk43Ovq6ybnpXa3.jpg
11:37 PM rue_mohr: you can barely see, but those pipes are paralleled
11:38 PM rue_mohr: its two
11:38 PM rue_mohr: I'm doing that
11:38 PM Tom_L: ok
11:38 PM rue_mohr: hopefully not too much flex by the time I get to the inner ring
11:38 PM rue_mohr: :S
11:38 PM Tom_L: you better beef it up if you plan to sit in it
11:39 PM rue_mohr: the double ring will definitly be sufficient
11:39 PM rue_mohr: maybe overkill, might have been able to go to 1.5" pipe
11:39 PM Tom_L: how many cross bars?
11:39 PM rue_mohr: thats 2"
11:39 PM rue_mohr: I'm gonna zigzag the hell outa it
11:39 PM rue_mohr: \/\/\/\/\/\/\/
11:39 PM Tom_L: you better fishmouth them when you weld em
11:39 PM rue_mohr: ... fishmouth?
11:39 PM rue_mohr: anti stress crack?
11:40 PM Tom_L: https://i.ytimg.com/vi/-fbO6fQ72zA/maxresdefault.jpg
11:40 PM rue_mohr: oh hell no, I'm gonna flatten the ends of the ziggers
11:40 PM rue_mohr: bzzzzt*
11:41 PM rue_mohr: I should make a flattener press
11:41 PM Tom_L: they're easy to do
11:41 PM rue_mohr: but I need like 200
11:41 PM Tom_L: you can use a hole saw even if you're good
11:41 PM rue_mohr: flat is faster to weld too
11:42 PM Tom_L: not as strong
11:42 PM rue_mohr: +- the damn galvanization
11:42 PM rue_mohr: I'm confident I'll be good
11:42 PM Tom_L: don't breathe the fumes
11:42 PM rue_mohr: I'm not confident I have room for the motor for the middle ring
11:42 PM rue_mohr: no
11:42 PM rue_mohr: I was almost thinking of a remote aspirator setup
11:43 PM rue_mohr: some pipe
11:43 PM Tom_L: all roll cages must be fishmouth cut
11:43 PM rue_mohr: yup
11:43 PM Tom_L: same with roller coasters etc
11:43 PM rue_mohr: this isn't a rollcage, its a rolling cage
11:43 PM rue_mohr: just like a fire detecting alarm system isn't a fire alarm system
11:43 PM rue_mohr: 8-| enough samantics?
11:44 PM rue_mohr: see they brought he pipe into boxes on that last pic
11:44 PM rue_mohr: I'm not doing that, I'm putting plate on each side of the pipe and mounting the bearings to it
11:44 PM rue_mohr: the the pipe is continious
11:44 PM rue_mohr: more tea!
11:45 PM rue_mohr: damn, 9pm
11:45 PM Tom_L: 11
11:45 PM rue_mohr: oooooh, what was I supposed to get done
11:45 PM Tom_L: i'm out.