#robotics Logs
Oct 31 2017
#robotics Calendar
12:25 AM branjb: anyone made a self balancing robot?
12:28 AM rue_mohr: I dont know that any of us have
12:28 AM rue_mohr: but I assure you, its only because of lack of interest
12:28 AM rue_mohr: theBear, wait, weren't you starting one about 5 years aog?
12:28 AM rue_mohr: ago?
12:28 AM rue_mohr: who made the one with the tail balance sensor
12:30 AM rue_bed: branjb, wha do you know about pid loops?>
12:31 AM branjb: trying to figure out a good tuning approach, seems it won't balance with just proportional. too little, falls over, too much, overshoots
12:31 AM branjb: is it possible it won't balance without integral or differential?
12:34 AM rue_bed: try PD
12:34 AM rue_bed: I can be trickey
02:47 AM Jak_o_Shadows: Scope arrived
06:16 AM edmoore: Jak_o_Shadows: congratulations
06:16 AM edmoore: it's a superpower
06:16 AM Jak_o_Shadows: yeah. I'll be able to try and figure out wy the RTC isnt working on tihs chip
06:17 AM edmoore: external osc?
06:18 AM Jak_o_Shadows: yup
06:18 AM Jak_o_Shadows: I dont' have time for the next couple of days to look at it
06:18 AM Jak_o_Shadows: It's a weekend job
06:19 AM edmoore: might be the ext osc is loaded wrong
06:19 AM edmoore: so won't start oscing
06:19 AM edmoore: but yes a scope will quickly show u
06:19 AM edmoore: i got very lucky 2 years ago with getting a really realy great scope and it's helped me so much ever since
06:19 AM edmoore: especially really powerful triggering options that let you lay very careful traps for very specific things
09:20 AM rue_bed: Jak_o_Shadows, whats the chip?
09:22 AM rue_bed: I'd bet you havn't set the one-time 'on' flag
09:28 AM catphish: good day sirs
09:47 AM rue_mohr: hey
11:34 AM robotustra: halloween
06:54 PM veverak: https://imgur.com/a/bhJeg ship in progress
07:35 PM robotustra: veverak, cool ship
08:05 PM veverak: thanks
09:37 PM rue_mohr: I cant believe it, it took me a month to find a store that had "all beef" wieners, and mom just took them thinking they were the other ones I got for her
09:37 PM rue_mohr: damnit
09:41 PM theBear: heh, i wonder if errm, can't call em hoofs+snouts for beef, erm, ah, i wonder if lips+nipples count as "all beef", well, cow lips+nipples that is <grin>
09:43 PM homeroot is now known as evilroot
09:43 PM rue_mohr: atleast I know its not a horse
09:44 PM rue_mohr: it could be 100% balls, but atleast I'd know from what
09:44 PM rue_mohr: and can we get success asking for more these days?
09:46 PM rue_mohr: what pisses me off is that it took a month to find a store that had them back in stock before they ran out
09:46 PM rue_mohr: ma is feeding them to the birds
09:47 PM evilroot: Where the heck do you live?
09:48 PM rue_mohr: canada
09:48 PM evilroot: They don't have beef hot dogs there?
09:48 PM rue_mohr: the stores only order enough for 2 days of sales, every month, so it seems
09:49 PM rue_mohr: its ALWAYS out
09:49 PM evilroot: They don't have Jewish people in Canada?
09:49 PM theBear: one-naughty-word warning https://i.pinimg.com/236x/fd/6c/27/fd6c278f1ef3460caf7800bfcf96f47f.jpg <grin> so don't be worrying if i know my snossages or not
09:50 PM rue_mohr: actually, I have to special order almost everything I eat now, not becasue its special, but because stores stop stocking everything I eat
09:50 PM evilroot: Usually Kosher hot dogs are either all beef or beef/chicken
09:51 PM rue_mohr: they only sell ONE kind of all beef wieners
09:51 PM evilroot: I haven't been to Canada in a while but when I was the stores stocked pretty similar stuff
09:51 PM rue_mohr: and EVERYONE is usually out of them
09:51 PM evilroot: So just order online
09:51 PM evilroot: Or ask the store to order it for you
09:52 PM evilroot: There's a particular brand of non-alcoholic beer my Dad likes, since it tastes like the real stuff but he can't drink alcohol due to his liver
09:52 PM rue_mohr: I need a 5m MM SC fiber cable
09:52 PM rue_mohr: I called every supplier
09:52 PM rue_mohr: its special order, it'll take 3 weeks
09:52 PM rue_mohr: list of 20 suppliers
09:53 PM rue_mohr: FFFFFFFFFFFFFFFFFFFFFFFFFFF
09:53 PM evilroot: I just asked the manager at my favorite grocery. He said sure, I'll order you a few cases and maybe put some on the shelf, who knows people might buy it
09:53 PM rue_mohr: yes, why dont I just email the manager EVEY time I need groceries?
09:54 PM rue_mohr: FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
09:54 PM rue_mohr: sometimes its just nice to DO something instead of having to FIGHT with it
09:54 PM evilroot: Wait, a 5m multimode fiber cable with SC connectors?
09:55 PM theBear: that's what she said <wink>
09:55 PM evilroot: Heck I have those sitting in a drawer
09:55 PM rue_mohr: there's nothing like like needing to go to 6 grocery stores to get 4 of the 5 items on your shopping list
09:55 PM theBear: heh
09:55 PM rue_mohr: evilroot, NOT IN CANADA THO
09:55 PM rue_mohr: 3weeks
09:55 PM evilroot: You have eBay in Canada, right?
09:55 PM evilroot: And Amazon?
09:55 PM rue_mohr: yup, and canada post
09:55 PM evilroot: Both stock it
09:56 PM rue_mohr: did you know canada post will hold items for up to 7 months?
09:56 PM evilroot: https://www.ebay.ca/itm/Leviton-5M-Fiber-Optic-Multi-Mode-Duplex-Patch-Cord-Cable-MM-SC-SC-50-5C200-M05/391889480611?hash=item5b3e6eeba3:g:JzcAAOSw~V9Zw-Pr
09:56 PM evilroot: That's IN CANADA
09:56 PM rue_mohr: oh sorry, SM
09:57 PM rue_mohr: but yea
09:57 PM Tom_L: rue_mohr, having a day are we?
09:57 PM rue_mohr: if I were to ship a 1lb 6"x6"x6" package to my nextdoor neighbour, it would cost $37 and take 2 weeks to arrive
09:58 PM evilroot: Seriously?
09:58 PM rue_mohr: Tom_L, its gonna drive me insane, really it is
09:58 PM Tom_L: yeah canada post is just that bad
09:58 PM Tom_L: move to US
09:58 PM rue_mohr: wait am I already insane?
09:58 PM rue_mohr: no
09:58 PM rue_mohr: ok
09:58 PM rue_mohr: wait
09:58 PM rue_mohr: what
09:58 PM rue_mohr: you sure?
09:58 PM rue_mohr: sure of what?
09:58 PM rue_mohr: I'm not insane
09:58 PM rue_mohr: I'm sure
09:58 PM rue_mohr: ok, thanks
09:58 PM rue_mohr: np
09:58 PM * Tom_L slaps rue_mohr and watches his head spin around
09:59 PM evilroot: No wonder the guy in Canada who wanted to buy one of my robots backed out
09:59 PM rue_mohr: you should have seen me trying to find a E12 to E26 lightbulb converter
09:59 PM rue_mohr: (christmas lamp to normal lamp)
09:59 PM evilroot: He said shipping was impossible, even though I got a quote here that said no problem
10:00 PM Tom_L: why would you buy a converter?
10:00 PM rue_mohr: well
10:00 PM Tom_L: i've never heard of one let alone seen one
10:00 PM rue_mohr: the ONLY red led i could get was E12
10:00 PM Tom_L: but i bet china makes em by the buckes
10:00 PM evilroot: Guess when the US gets too bad I'll go to Denmark instead of Canada
10:00 PM Tom_L: lord knows i'm not moving south
10:01 PM rue_mohr: digikey is the only one who can ship here
10:01 PM Tom_L: do they sell beef hotdogs?
10:01 PM rue_mohr: somehow they get stuff here in 2 days from the usa for only $8
10:01 PM rue_mohr: you know, their customer service is GREAT, I bet if I asked they would
10:02 PM rue_mohr: but god knows what I'd pay for the hotdogs
10:02 PM Tom_L: reminds me of that MASH episode when they order bbq from the states
10:02 PM rue_mohr: didn't see that one
10:02 PM rue_mohr: they have to lie about what it was?
10:02 PM Tom_L: no but the hoops they went thru to get it to korea
10:03 PM evilroot: Digikey is usually overpriced for me
10:03 PM evilroot: I generally order from Mouser
10:03 PM Tom_L: well they did say it was special emergency supplies
10:05 PM Tom_L: After literally being fed up with mess hall food, Hawkeye goes on a desperate quest to order barbecue spare ribs from his favorite restaurant, Adam's Ribs, at Dearborn Station in Chicago.
10:06 PM rue_mohr: the quetioion is, is mousers customer service good enough to send your wieners
10:06 PM Tom_L: i've had no problems with either one
10:07 PM rue_mohr: I know, bus can you phone mouser at 1am and look up your customer number? I did w/digikey
10:07 PM rue_mohr: 1am, a real human answers
10:07 PM Tom_L: digikey's CS is 2nd to none
10:07 PM Tom_L: but you pay a little more from them
10:08 PM rue_mohr: yea
10:08 PM Tom_L: sometimes it's worth it
10:08 PM rue_mohr: I need to be more spontanious
10:08 PM rue_mohr: by about 60% I think
10:09 PM Tom_L: should have some steppers tomorrow
10:09 PM rue_mohr: oooo
10:09 PM rue_mohr: any welding happen since you started cutting peices?
10:09 PM Tom_L: i'm thinkin i may mount them on the sherline until i'm done
10:09 PM Tom_L: no i need to cut more stuff
10:09 PM Tom_L: was pooped today
10:09 PM rue_mohr: ah your quite a few parts away aren't ya
10:10 PM rue_mohr: how was halloween?
10:10 PM Tom_L: i made a list of stuff to cut out at least
10:10 PM Tom_L: i skipped hw
10:10 PM Tom_L: i didn't see much activity this year anyway
10:11 PM Tom_L: most of the hard stuff is cut
10:11 PM Tom_L: all the 2" short pieces
10:11 PM Tom_L: the rest shouldn't take too long to cut
10:11 PM Tom_L: those adjustment brackets might
10:11 PM Tom_L: oh and i added a stepper mount
10:12 PM Tom_L: may make both of those from steel
10:12 PM Tom_L: one is flat the other 90 deg
10:12 PM rue_mohr: so when you getting scerws and sliders?
10:13 PM Tom_L: could be a while
10:13 PM Tom_L: so i may wait to weld until i have all the parts
10:13 PM Tom_L: might tack it to see what it looks like
10:15 PM evilroot: Damn it
10:15 PM evilroot: Fucker backer out from buying a machine at the last minute
10:15 PM evilroot: Grrrrr
10:16 PM evilroot: Last damned one, I'm so tempted to just break it down
10:16 PM * evilroot is pissed
10:16 PM Tom_L: yeah do that
10:16 PM Tom_L: and send it to me
10:17 PM Tom_L: that has no harmonic drives does it?
10:18 PM evilroot: Naw, sold that one
10:18 PM evilroot: This one just has really nice rails and ballscrews
10:18 PM evilroot: And big beefy servos
10:18 PM Tom_L: with drives?
10:19 PM evilroot: Well I have the original controller, but its a bit outdated
10:19 PM evilroot: I use Geckodrive G320X's to run mine
10:55 PM rue_mohr: ok, I upgraded the hall emergency lights to LED
10:55 PM rue_mohr: brigter and more runtime
10:58 PM evilroot: Office?
10:58 PM rue_mohr: house
10:58 PM rue_mohr: lots of power outages in winter
10:58 PM rue_mohr: the lights help me get around to set up the generator
10:59 PM evilroot: I'm starting to think you live in a remote part of Canada, heh
10:59 PM rue_mohr: look up "sunshine coast" I'm not in australlia
11:00 PM evilroot: Um, what now?
11:02 PM rue_mohr: https://www.google.com/maps/@49.4289284,-123.6558113,13z
11:02 PM rue_mohr: that should work
11:04 PM Tom_L: ok, quick inventory check.. i think i have all the steel i need
11:04 PM evilroot: So yeah, out of the way
11:05 PM evilroot: Kind of like the Outer Islands here
11:05 PM Tom_L: evilroot where are you?
11:05 PM evilroot: Durham NC
11:06 PM rue_mohr: I mean, even in australlia they had corner stores where you could buy a drillbit
11:06 PM Tom_L: been to greensboro- winston salem a few times
11:07 PM rue_mohr: I'm quite liking the ways on the taig milling machine
11:07 PM evilroot: Not too far, but pretty different
11:09 PM Tom_L: gold hill
11:09 PM Tom_L: further sw
11:10 PM Tom_L: more a bump in the road than anything
11:11 PM Tom_L: rue_mohr, what's your welder?
11:11 PM evilroot: Rings a bell
11:11 PM Tom_L: mig?
11:11 PM evilroot: On the way to Charlotte?
11:11 PM Tom_L: NE of charlotte
11:12 PM evilroot: Of 85, right?
11:12 PM Tom_L: just off the road from salsbury
11:12 PM evilroot: *off
11:12 PM Tom_L: off 85 on 52
11:12 PM evilroot: My ex-gf was from Concord
11:12 PM evilroot: So yeah
11:12 PM Tom_L: so was JR
11:13 PM evilroot: JR?
11:13 PM Tom_L: i've seen most of the nascar shops there
11:14 PM Tom_L: being from NC if you don't know who Jr is you should be shot
11:15 PM evilroot: Erm . . .
11:15 PM Tom_L: although i don't follow it much anymore
11:15 PM evilroot: I was born in upstate NY
11:15 PM Tom_L: ahh.... one of those :)
11:15 PM Tom_L: earnhardt jr
11:16 PM evilroot: But lived the first part of my life in Wilmington, then Raleigh at NCSU, now Durham
11:16 PM evilroot: Haha not all Carolinians give a shit about NASCAR
11:16 PM evilroot: Football, yeah
11:16 PM Tom_L: i know, just givin you crap
11:17 PM Tom_L: i used to but not so much anymore
11:17 PM * evilroot grew up welding, grinding, carrying heavy shit, and doing yard work
11:18 PM Tom_L: i'm wondering if i'd be better off using some .024 wire instead of .030 on my mig
11:18 PM Tom_L: been having feed issues
11:18 PM evilroot: My father did and still does public art using industrial metal he gets out of old tobacco warehouses
11:18 PM Tom_L: but it could also be the large spool i'm using
11:19 PM evilroot: Dunno, I only ever learned how to arc weld
11:19 PM Tom_L: that's what i learned on too and prefer it but have a mig now
11:19 PM evilroot: Dad said mig was for pussies
11:19 PM Tom_L: i wouldn't disagree
11:20 PM Tom_L: i hardly use it much now
11:20 PM Tom_L: but i'm gettin ready to make this mill
11:20 PM evilroot: But I can see it being much easier for frames and production
11:20 PM evilroot: Rather than one-off work
11:20 PM Tom_L: don't have to stop to change sticks
11:21 PM Tom_L: as a kid, my neighbor was a welder
11:21 PM Tom_L: used some pretty darn big rods
11:21 PM rue_mohr: how do you change sticks on the arc?
11:21 PM Tom_L: ?
11:22 PM Tom_L: they come in sticks
11:22 PM rue_mohr: hwo do you change sticks without stopping?
11:22 PM Tom_L: you don't
11:22 PM Tom_L: that's one advantage mig has
11:23 PM rue_mohr: mine is a miller maxstar200
11:23 PM rue_mohr: iirc
11:23 PM Tom_L: miller 175
11:23 PM rue_mohr: SD
11:23 PM rue_mohr: https://www.youtube.com/watch?v=Jxgnj-eKjtY
11:24 PM rue_mohr: It has HF?
11:24 PM rue_mohr: ...
11:25 PM rue_mohr: hmm mines a 200 SD
11:28 PM Tom_L: i need some tips to try the .024 wire again
11:28 PM rue_mohr: iirc HF start...
11:28 PM Tom_L: i think i did better with it
11:28 PM rue_mohr: Tom_L, flux core sucks
11:28 PM rue_mohr: thats my tip
11:28 PM Tom_L: i knwo
11:29 PM rue_mohr: no refunds, thats your tip
11:29 PM Tom_L: i have a roll but haven't used it ever
11:29 PM rue_mohr: thdhdhdhtdhdhdhthdhtdpppp all over your project
11:29 PM Tom_L: but it's supposed to work in the wind better
11:29 PM Tom_L: splatters alot
11:29 PM rue_mohr: exactly
11:29 PM rue_mohr: and brown ugh, and...
11:29 PM Tom_L: so cover it
11:30 PM Tom_L: yeah i bet
11:30 PM Tom_L: i've got a big spool of .030 and a small one of .024
11:30 PM Tom_L: i think i'll switch and try the .024 again
11:40 PM rue_mohr: hmm
11:40 PM rue_mohr: the new pendant has two problems
11:40 PM rue_mohr: a) the encoder dosn't work,
11:40 PM rue_mohr: b) the data tot eh screen is messed up
11:41 PM rue_mohr: I think I have a bad rs232 buffer, and
11:41 PM rue_mohr: wrong pins?