#robotics Logs
Nov 25 2019
#robotics Calendar
12:55 AM rue_shop1: I tried to drill a hole in the thing I was building a project into, and it literally crumbled
01:00 AM rue_shop1: :(
01:00 AM rue_shop1: never had plastic do that before
04:27 AM rue_bed2: is that address still flooding with join/parts?
03:16 PM zhanx: chisight, printing parts to verify my designs, had the file names wrong as like wtf.
03:16 PM zhanx: so i spent 2 hours editing the wrong part to fit
03:20 PM chisight: i hate when that happens. :-\
03:22 PM zhanx: in reality the part i was editing was .5mm too large in diameter, not 30mm to small
03:22 PM zhanx: i was like where did i get these numbers.
03:30 PM chisight: they came from over ---->
03:30 PM chisight: :-)
03:32 PM chisight: rue_bed2: yes they are still flooding with join/parts. grep your log with "nag77-2-83-152-154-106" to see it.
06:21 PM logb0t_ is now known as logb0t
06:30 PM rue_mohr: I ignore all join/part messages cause thats all the channel ever gets and you cant see who said anything
06:30 PM -!- #robotics mode set to +o by ChanServ
06:31 PM Tom_L: haven't noticed anything over annoying
06:31 PM zhanx: my join / parts are off also
06:32 PM Tom_L: looks like alot of them because nobody talks here
06:32 PM zhanx: most of them are bots i think
06:35 PM rue_mohr: thats what I assume
06:36 PM rue_mohr: any of you guys that address?
06:36 PM rue_mohr: oh no, its ipv6
06:36 PM rue_mohr: nobody actaully uses ipv6
06:36 PM rue_mohr: how to do that then nag77-2-83-152-154-106
06:37 PM zhanx: its sasl address
06:38 PM zhanx: or its on google fiber
06:47 PM chisight: i only saw it because i was looking at who the TinyTitMom gartt was talking about was.
06:48 PM chisight: it was resolving to an ipv4 yesterday. 83-152-154-106 iirc.
06:49 PM rue_mohr: oh then your just seeing the door revolving
06:49 PM -!- #robotics mode set to -o by rue_mohr
06:50 PM rue_mohr: ok, day 1 of my vaccation is basically done
06:50 PM chisight: get any robots built?
06:50 PM rue_mohr: no
06:50 PM rue_mohr: working on a new bearing for a larger slider for the new printer
06:51 PM rue_mohr: but its putting up a fight
06:51 PM chisight: ahh. been fighting a battery pack myself. the management board is refusing to allow charging for more than one second.
06:52 PM rue_mohr: does the battery actaully need it?
06:52 PM chisight: dumb pack just wants you to throw it away if you ever let it's soc drop below ~16v.
06:52 PM zhanx: i am waiting on my spool to run out so i can hot swap it
06:53 PM chisight: pack is at 13.6v. it's dead dead dead (jim)
06:53 PM rue_mohr: I was gona say thats high for a cell
06:53 PM rue_mohr: well, then its cause its unbalanced
06:53 PM rue_mohr: take a cell charger,and individually recharge each cell
06:54 PM chisight: what it should do is pulse charge at a low rate until it reaches it's desired ~16v.
06:54 PM rue_mohr: then try the pack again
06:54 PM rue_mohr: nope, one cell is unbalanced
06:54 PM rue_mohr: do them individually
06:54 PM chisight: the pack is sealed and i don't really want to break it open. pain to get together cleanly ever again.
06:54 PM rue_mohr: well $250 gets you a shiney new one!
06:54 PM chisight: it's not likely unbalanced, it was left sitting while dead.
06:55 PM chisight: exactly, except the pack is a discontinued series so i have to replace everything that uses it. or i can pulse charge until it reaches ~16v and then it should be happy.
06:58 PM rue_mohr: you have a fire extinguisher right?
06:58 PM chisight: yep. but it's not lithium.
06:58 PM chisight: nicad for the durable win. this would have died a decade ago if it was lithium ion.
06:58 PM rue_mohr: so atleast if you cant put the battery out, you can keep the thigns around it under control
06:59 PM rue_mohr: ah
07:00 PM rue_mohr: 916 upgraded, 0 newly installed, 0 to remove and 392 not upgraded
07:00 PM rue_mohr: hmm, maybe I should poke my system more often
07:00 PM chisight: i've seen ni-cad batteries that work fine after 90 years. lithium ion are pretty dead at 5.
07:00 PM chisight: lol, sounds like it does need more attention.
07:01 PM rue_mohr: I dont stirr the pot too often and things work
07:01 PM rue_mohr: I have to be carefull to keep apt up to date tho
07:01 PM rue_mohr: thats bitten me a few times
07:02 PM Tom_L: which os?
07:02 PM rue_mohr: debian
07:02 PM rue_mohr: this is my 2000 install
07:02 PM Tom_L: what flavor?
07:02 PM chisight: 1300 updates behind seems a bit much.
07:02 PM rue_mohr: yea, you get into dependency circles easy
07:02 PM chisight: yeah.
07:03 PM rue_mohr: every so often I just take sweeping lists of libraries and update them
07:03 PM rue_mohr: tends not to cause troubles
07:07 PM Tom_L: so what you workin on?
07:09 PM rue_mohr: still cant pull my head togethor
07:09 PM Tom_itx: reading
07:09 PM rue_mohr: I have a new bearing for the 3d printer printing
07:09 PM Tom_itx is now known as Tom_L
07:09 PM rue_mohr: I should go clean up the deck more
07:10 PM Tom_L: learn verilog
07:10 PM rue_mohr: I was gonna install on one of the shop machines last night
07:10 PM rue_mohr: I got distracted
07:10 PM rue_mohr: I still have a nasty headache tho
07:12 PM rue_mohr: I need some mindless stuff
07:12 PM * Tom_L gives rue_mohr a shovel and pickaxe
07:12 PM rue_mohr: just about
07:13 PM rue_mohr: I want to do something other than software stuff
07:13 PM Tom_L: learned that [7:0] is little-endian [0:7] is big-endian
07:14 PM rue_mohr: ooo
07:14 PM Tom_L: for a port definition
07:14 PM rue_mohr: that could be a nasty surprise
07:14 PM rue_mohr: that would help in FFT stuff too
07:14 PM Tom_L:
07:14 PM Tom_L: inout [7:0] address; //port "address" is bidirectional
07:15 PM rue_mohr: I need to find an fpga I'm gonna play with
07:15 PM rue_mohr: I thought I ordered soemthing, but am not sure
07:15 PM rue_mohr: speaking of, gonna check the mailbox
07:15 PM Tom_L: i need to find my board
07:15 PM Tom_L: no clue where it is
07:16 PM rue_mohr: I should make a list of the fpgs things I have in that box
07:17 PM rue_mohr: not have to re-riffle thru it every time
07:17 PM Tom_L: if i could i'd get that newer experimenter board
07:17 PM Tom_L: but this one will satisfy what i'm doing
07:17 PM rue_mohr: well there are some cheaper ones now, but I dont ahve the stuff set up for them either
07:17 PM zhanx: 10mm left on this print and just maybe enough on the spool
07:17 PM zhanx: its a race
07:18 PM Tom_L: get ready to shove another color in the feeder
07:18 PM zhanx: its ready and waiting
07:22 PM rue_mohr: Tom_L, tang nano
07:22 PM rue_mohr: https://www.aliexpress.com/item/4000329870934.html
07:22 PM Tom_L: you mentioned that i think
07:22 PM rue_mohr: yea, the suggestions are splitting me 3 different directions
07:23 PM Tom_L: not much room in it
07:23 PM Tom_L: well enouh
07:23 PM Tom_L: what fpga?
07:24 PM rue_mohr: https://www.aliexpress.com/item/1000006622145.html
07:24 PM rue_mohr: that one also isn't too far out of the ballpark
07:25 PM Tom_L: wonder if spartain6 is supported on webpack
07:36 PM Tom_L: i'll load it up and see
07:37 PM Tom_L: i think it is..
07:39 PM Tom_L: it does
07:40 PM rue_shop2: i was part of the suggested package
07:41 PM rue_shop2: the bearing looks ok
07:41 PM rue_shop2: I"ll assemble and see
07:43 PM Tom_L: haha, found the schematic editor
07:44 PM rue_shop1: ?
07:44 PM rue_shop1: oh for fpga?
07:44 PM Tom_L: yeah
07:44 PM Tom_L: builds the logic defined in your file
07:44 PM rue_shop2: this is frustrating
07:44 PM Tom_L: you can then connect the pins to physical hardware
07:44 PM Tom_L: but i haven't found that part again yet
07:45 PM Tom_L: i remember it...
07:45 PM rue_shop2: there is a huge list of things I wnat to do, and I'm complely exhauseted/tired
07:45 PM Tom_L: happens alot with you
07:45 PM rue_shop2: even just loading bearings into this seems liek too much
07:45 PM rue_shop2: I'm gonna go check the mail
07:48 PM Tom_L: this is gonna take a while to remember
07:52 PM Tom_L: rue_shop2, realize that board isn't buffered
07:53 PM Tom_L: i dunno what the logic voltage is on those
07:53 PM Tom_L: _might_ be lower than 3.3 but i dunno
07:54 PM rue_mohr: I was looking at one of something and everything was io buffered to atleast 3.3
07:56 PM rue_mohr: I got the programmer but not the fpga
07:57 PM Tom_L: my board has an onboard jtag circuit
07:57 PM Tom_L: they made it so it can be jumpered to external devices
07:58 PM rue_mohr: k
08:01 PM Tom_L: i'm not gonna get anywhere tonight.
08:01 PM rue_mohr: hey were did I drop that fpga link?
08:01 PM rue_mohr: oh heoh here
08:01 PM rue_mohr: Tom_L, whats the sram for?
08:03 PM Tom_L: https://www.aliexpress.com/item/4000251546729.html?spm=a2g0o.productlist.0.0.77902edfyUWZ7u&algo_pvid=33477d78-e6fb-4785-8d00-197830a59c02&algo_expid=33477d78-e6fb-4785-8d00-197830a59c02-1&btsid=04eb9a06-c30a-40ec-b589-45fc85490a8b&ws_ab_test=searchweb0_0,searchweb201602_9,searchweb201603_55
08:03 PM Tom_L: consider that
08:03 PM rue_mohr: https://www.aliexpress.com/item/4000251546729.html
08:03 PM Tom_L: on an fpga it stores the program, on a cpld the cpld holds it
08:03 PM Tom_L: fpgas load it on startup
08:03 PM rue_mohr: ouch too much for starting
08:03 PM rue_mohr: but its ram
08:04 PM rue_mohr: volatile
08:04 PM Tom_L: it's got stuff to play with on it though
08:04 PM rue_mohr: I have lots of stuffs...
08:04 PM rue_mohr: lots and lots and lots of stuffs
08:04 PM Tom_L: how much is your time worth?
08:04 PM rue_mohr: all cowding my ability to move my arms
08:05 PM rue_mohr: the basic leds and buttons the other one comes with will get me pretty far
08:05 PM Tom_L: i didn't see those
08:05 PM rue_mohr: its not much :)
08:06 PM zhanx: side note for those following along
08:07 PM zhanx: 1-1/2 pvc has almost the same ID as a nema 23 mount center
08:07 PM Tom_L: :)
08:07 PM rue_mohr: OOoo..
08:07 PM rue_mohr: so , good for encasing gearboxes
08:07 PM zhanx: 1 mm difference (pvc is slightly larger id)
08:07 PM zhanx: yep
08:08 PM zhanx: i found this out making the motor mount for the 1-1/2 pvc auger
08:08 PM rue_mohr: my eyes are trying to close again
08:09 PM Tom_L: well go eat and let them
08:09 PM zhanx: rue_mohr, got an extra 9 nema 23's laying around?
08:09 PM rue_mohr: 3 creates of steppers, so YEA
08:10 PM rue_mohr: (and if I saw a stepper on the side of the street I'd still pick it up)
08:10 PM zhanx: quote me a price when you get a chance for 5 right now
08:11 PM Tom_L: heh i think i got 6 spare
08:11 PM Tom_L: 2 different sizes
08:11 PM zhanx: gonna start picking them up soon
08:11 PM zhanx: been looking for them but no dice
08:11 PM rue_mohr: why 9?
08:11 PM Tom_L: how strong?
08:12 PM zhanx: 4 for the printer, 5 for the extruder/mixer
08:12 PM rue_mohr: yea I cant testify as to how strong the ones I ahve are
08:12 PM zhanx: rue, i need to test that also so its fine
08:12 PM rue_mohr: hmm
08:12 PM Tom_L: iirc mine are 135 and 282 inoz
08:12 PM Tom_L: just a guess
08:13 PM Tom_L: replaced with 570
08:13 PM zhanx: i was thinking at least a 200 inoz
08:13 PM Tom_L: double stack
08:13 PM Tom_L: those might be triple
08:14 PM rue_mohr: https://www.aliexpress.com/item/4000112290512.html
08:14 PM rue_mohr: these are still comming down
08:14 PM zhanx: this is what i had bookmarked https://www.amazon.com/Stepper-Motor-269oz-Bipolar-Hobby/dp/B00QG2HPMM
08:15 PM rue_mohr: those are way bigger than mine
08:15 PM rue_mohr: like 2x
08:15 PM Tom_L: https://www.ebay.com/itm/3pcs-NEMA23-570OZ-IN-5A-3-8-DUAL-SHAFT-STEPPER-MOTOR/253223632606?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
08:15 PM Tom_L: those are the biggest nema23 i could find
08:16 PM zhanx: those are huge
08:16 PM Tom_L: size wise not that much
08:16 PM zhanx: triple stack
08:16 PM Tom_L: my 2nd pair must have been double stack
08:16 PM rue_mohr: if you want to find me on thingiverse, search for twisttie, mine is STILL the only one
08:17 PM Tom_L: zhanx i put those on my new mill
08:17 PM zhanx: nice, i don't think i need that much power tho
08:17 PM Tom_L: you _can_ get them in 1/4" shaft but i wouldn't
08:18 PM zhanx: i wouldn't either
08:18 PM rue_mohr: zhanx,
08:18 PM rue_mohr: https://www.thingiverse.com/thing:715465
08:19 PM rue_mohr: lots smaller
08:19 PM zhanx: yep yours is single stack
08:20 PM zhanx: for testing the single stack will work for me
08:20 PM Tom_L: my first sherline ones were single stack
08:20 PM zhanx: heck 3 will work for me for now
08:20 PM rue_mohr: hahah shall I send them to your old address :)
08:21 PM Tom_L: hahaha
08:21 PM zhanx: lol no
08:22 PM rue_mohr: ali's numbers must have been low this year their sending out lots and lots of "please come spend money" emails
08:22 PM zhanx: rue_mohr, tons of them
08:22 PM zhanx: plus its xmas time shopping for them
08:22 PM Tom_L: answer their plea
08:23 PM rue_mohr: no, I have too many things that havn't arrived
08:23 PM rue_mohr: like the $56 signal generator I splurged on
08:23 PM rue_mohr: I didn't go for the $300 scope tho
08:23 PM Tom_L: rigol?
08:23 PM rue_mohr: I think I'll ebay for a scope
08:24 PM rue_mohr: https://www.aliexpress.com/item/32960728320.html
08:24 PM Tom_L: get one of those 'cheap' rigols
08:24 PM rue_mohr: rigol??? that junk??? no, I only trust FeelTech!!!
08:24 PM rue_mohr: :)
08:25 PM rue_mohr: its better than the one I made, but not as convienient
08:25 PM rue_mohr: ienienienien
08:25 PM Tom_L: you don't have a scope?
08:25 PM rue_mohr: analog
08:25 PM rue_mohr: slow signals are a pain
08:25 PM rue_mohr: I have pile of parts to make a digital one
08:26 PM rue_mohr: includes a TEK front end amp
08:26 PM rue_mohr: anything over about 5Khz is ok on the analog if its repeating
08:26 PM Tom_L: what is your time worth?
08:26 PM rue_mohr: but I want to make a scope
08:27 PM Tom_L: this 'learn verilog in one day' is gonna take more than one day
08:27 PM Tom_L: but it looks decent
08:28 PM rue_mohr: I can use it for my digital scope...
08:28 PM zhanx: https://imgur.com/a/xPcs05K
08:28 PM rue_mohr: it could shovel fast...
08:28 PM rue_mohr: your multiplier is out, hence the gaps
08:29 PM zhanx: its not gaps its wobble due to the rods
08:29 PM rue_mohr: and the cutaway I saw says your extruder dia needs tweeking, (you have to lie)
08:29 PM rue_mohr: not eh horizontal cuts
08:29 PM zhanx: i did, its way better
08:29 PM rue_mohr: k
08:29 PM zhanx: it was at stock (forgot to change it)
08:30 PM rue_mohr: I suggest a) bump the extruder mult by about 0.05 OR bring up the temperature just a bit
08:30 PM zhanx: will do the multi as its at .75 i think
08:30 PM rue_mohr: whats it now!?!?
08:30 PM zhanx: ya it was
08:30 PM zhanx: its at .80 now
08:30 PM rue_mohr: thats pretty far out
08:31 PM rue_mohr: should be somewhere between 0.95 and 1.15
08:31 PM rue_mohr: ish
08:31 PM rue_mohr: I mean, its border
08:31 PM zhanx: its never been that high for this printer
08:31 PM rue_mohr: did you see if your filament is a really wrong size?
08:31 PM zhanx: its 1.75
08:32 PM rue_mohr: some of mine has been like 1.6
08:32 PM zhanx: my nozzle size was set wrong before
08:32 PM rue_mohr: k
08:32 PM zhanx: new roll gets here wed
08:32 PM rue_mohr: you definitly want more plastic going on, the sides should be consistantly filled
08:33 PM rue_mohr: speed and layer height can play into it
08:33 PM zhanx: k, bumped it to .80, will print 4x pieces and move it up each time
08:33 PM rue_mohr: keep config backups, if you start going wrong, it can be hard to get back to descent
08:34 PM zhanx: not changing the temps as its perfect (I changed heaters due to a broke wire)
08:34 PM rue_mohr: regardless, its working!
08:34 PM zhanx: and tested it
08:34 PM zhanx: oh its been working
08:34 PM zhanx: now its the never ending tweaking
08:38 PM zhanx: rue_mohr, this motor mount will be easy to cast
08:38 PM rue_mohr: ah!
08:38 PM rue_mohr: then done bother with the holes
08:39 PM rue_mohr: just do locators
08:39 PM zhanx: the holes i got stainless for when casting, i watched a video on it
08:40 PM zhanx: just need steel but i have stainless that size
08:46 PM rue_shop1: so
08:46 PM rue_shop1: I got a silica pack that seems to be a fake
08:46 PM rue_shop1: it was accidently left out in the rain
08:46 PM rue_shop1: and its not swollen up at all
08:47 PM rue_shop1: and I was just wondering where it came from
08:47 PM rue_shop1: odds are, it was from a filament box
08:51 PM rue_shop2: I never appreciated the precision of bearings till we got some bad batches of them over here
08:54 PM zhanx: making clamps to hold wires and water lines now
08:54 PM Tom_L: my kid got some really good ones for his skates and they are smooth as glass
09:11 PM rue_shop2: :) bearing block came out awesome
09:27 PM zhanx: ok printing a wire holder for the 1-1/2 pvc for wire management (test piece)