#robotics Logs
Sep 05 2018
#robotics Calendar
07:43 AM orlock: rue: awake?
08:35 AM anonnumberanon: still haven't made one rue_?
08:40 AM rue_: I havn't done software for my new digital one
09:12 AM bostonmacosx: hello all
09:27 AM rue_: hey
09:30 AM bostonmacosx: so..just gteting into some simple projects....
09:30 AM bostonmacosx: with my daughter who wants to learn simple circuits
09:30 AM bostonmacosx: We started with a base PI and turned on andd off an LED....
09:30 AM bostonmacosx: Then we applied that to setting up a voice remote in our living room using LIRC
09:31 AM bostonmacosx: we decdedd our next projcet would be to use a ESP32 to powre a remote light switch
09:31 AM bostonmacosx: the ESP will awake and move a servo..but II want to find a low amp srerevo as thiis a bbattery application
10:22 AM tsglove is now known as Guest88903
10:54 AM VansFannel: Hi!
10:54 AM VansFannel: Can you help me with this please? https://answers.ros.org/question/302493/the-robot-doesnt-move-when-i-use-turtle_teleop_key/
12:29 PM VansFannel: Hi!
12:46 PM VansFannel: Could you help me with this question, please? https://answers.ros.org/question/302493/the-robot-doesnt-move-when-i-use-turtle_teleop_key/ Thanks.
12:57 PM mumptai: VansFannel, "answered 2 mins ago"
12:58 PM VansFannel: mumptai: answered 2 mins ago?
12:59 PM VansFannel: Yes, there is a new answer, but it doesn't fix the problem.
12:59 PM VansFannel: Thanks.
01:00 PM mumptai: wasn't me, have no usefull ros experience
01:00 PM VansFannel: Ok.
02:00 PM bostonma_: hello....
02:00 PM bostonma_ is now known as bostonmacosx
02:35 PM bostonmacosx: hello there
03:16 PM bostonma_: back ;)
03:16 PM bostonma_ is now known as bostonmacosx_
03:16 PM bostonmacosx_: so.....
03:30 PM anonnumberanon: amazon.com broken for anyone else?
03:32 PM bostonmacosx_: nope
03:32 PM bostonmacosx_: any ideas for really low powered serevos
03:39 PM anonnumberanon: dunno, really small ones?
03:54 PM VansFannel: Hi!
03:54 PM VansFannel: Could you help me with this question, please? https://answers.ros.org/question/302493/the-robot-doesnt-move-when-i-use-turtle_teleop_key/ Thanks.
04:58 PM bostonmacosx: evening
07:06 PM rue_: try this again
07:06 PM rue_: force feedback servo
07:07 PM _unreal_: ?
07:07 PM _unreal_: just got most of the parts for my sla7024/6's
07:07 PM rue_: I was distracted yesterday and didn't start the code
07:07 PM _unreal_: I have 6 sla7024s and 2 26's that I can find
07:07 PM Tom_L: pourin outside
07:08 PM rue_: did you get an arduino uno to put grbl on to run it?
07:08 PM _unreal_: I think I have 3 etched boards but I need to find the last one??/
07:08 PM _unreal_: rue_, you talking to me?
07:09 PM rue_: yes
07:09 PM _unreal_: I have a few options. I have a few uno's I also got this ucncv4
07:09 PM _unreal_: that came with the motors for the BIG cnc
07:09 PM rue_: I can get you up and going if you start with the uno
07:09 PM _unreal_: I may use it on my home
07:10 PM _unreal_: As far as controller I am up in the air
07:10 PM rue_: the uno
07:10 PM _unreal_: the home machine I need to get the motors spinning
07:10 PM rue_: I can get you going if you have a windows machine for the dxf->nc software (cam softwaer)
07:11 PM _unreal_: heh
07:11 PM _unreal_: I got most everything
07:11 PM rue_: pc -> uno ->drivers -> motors -> workpeice -> table ->floor ->ground
07:11 PM _unreal_: I just ordered this last night https://www.amazon.com/gp/product/B06X6HF32W/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
07:11 PM rue_: ->continent -> planet
07:12 PM _unreal_: rue_, the home machine is only missing drivers
07:12 PM _unreal_: its the damn unipolar shit thats killing me
07:12 PM rue_: the two people I know who have those say their useless and were a waste of money
07:12 PM _unreal_: I cant find cheap unipolar drivers SO I have to bild them
07:12 PM _unreal_: build
07:12 PM _unreal_: shrug
07:13 PM rue_: one of the guys was awestruck at the lack of delay with the pendant I made
07:13 PM _unreal_: They could be but they are what I built the current machine on. and all of my other spare steppers would be a chore to build adapters
07:13 PM rue_: he just stood there playing with it, couldn't get over it
07:13 PM _unreal_: hum
07:13 PM _unreal_: homemade?
07:14 PM rue_: I wonder if you clicked the link
07:14 PM rue_: yea I made it
07:14 PM rue_: I even made a version everyone else can make
07:14 PM _unreal_: link?
07:15 PM rue_: the constant current unipolar driver I made works, but the voltage was limited and it cant do the speed that the bipolar ones can
07:15 PM _unreal_: hum
07:15 PM _unreal_: not good then
07:15 PM _unreal_: these SLA drivers should be good
07:15 PM _unreal_: if I can just GET to them
07:16 PM rue_: https://www.thingiverse.com/thing:2794690
07:16 PM _unreal_: non stop daughter issues
07:16 PM _unreal_: with homework
07:17 PM _unreal_: nifty
07:18 PM _unreal_: sigh need to feed child now
07:18 PM _unreal_: I just spent the last 20min in the garage attack digging in my electronics junk bin pulling lots of parts
07:18 PM _unreal_: Did i show you a picture of my control box I"m building for the big machine
07:19 PM _unreal_: rue_, ?
07:19 PM rue_: https://www.thingiverse.com/thing:2108856 <-- ther is the controller I'm using on my last machine
07:20 PM rue_: the top board is 3 tiny13 controllers with shift registers, hooked up to SAL7044 under them
07:20 PM _unreal_: https://drive.google.com/open?id=1qtyn36xbzOtYdjsWVXdHtWyrit9U4Nb2 https://drive.google.com/open?id=1VuWi4w-v-lE5sGZ6tAHAAxRP-2heC2kG https://drive.google.com/open?id=1k8US9cI7WMIMn3FHjpq8DcqPiSpv5e6k https://drive.google.com/open?id=1PcbojNl4Kx1_xkY0tDm9yc4JzDaOVeSX https://drive.google.com/open?id=1d1PfMk_1-QrUtzIXGeXMF_sW-gVF-Dy6
07:21 PM rue_: huh, old box, what was in it?
07:21 PM rue_: interesting opto board
07:22 PM _unreal_: you'd like that opto board
07:22 PM _unreal_: simple scheamtic I believe
07:22 PM _unreal_: opto has 339 and 393 for 6 comparitors
07:22 PM rue_: yup
07:23 PM rue_: the admust is nice
07:23 PM _unreal_: it allows you to adjust the trigger level/time of the opto being triggerd and outputs a TRIGGERED logic with little or not bounch
07:23 PM _unreal_: outputs a logic 5v high, and lights one of the 6 leds
07:23 PM rue_: yup
07:24 PM _unreal_: are you interested in the schematic?
07:24 PM _unreal_: or do you canre
07:24 PM _unreal_: care
07:24 PM rue_: I prettymuch know hwo it goes
07:25 PM rue_: thanks tho
07:25 PM _unreal_: figured
07:25 PM rue_: I ahve a circuit I use thats really sensitive, but adjustable
07:25 PM _unreal_: it will be nice, I know a lot of poele where like EWWWW opto for cnc
07:25 PM _unreal_: and I was like yaa..... no switch to ware out
07:25 PM rue_: I like opto
07:26 PM _unreal_: and I can HOME it to a tighter tollerance then a switch
07:26 PM rue_: but you have to be carefull, they have a different sensitivity depending on the direction the blocking flag comes in on
07:26 PM rue_: so end-in is different than side-in
07:26 PM _unreal_: ya.... I'll end up mounting them all the same
07:26 PM rue_: each has some fudge on the trigger point
07:27 PM rue_: my first machine was threaded rod, I also put a opto on the rod, so i could take it to witin the turn
07:27 PM _unreal_: back in a few need to feed child
07:27 PM _unreal_: getting late
07:34 PM Tom_L: rue_, how many of these parts were you hoping to stash away?
07:37 PM zhanx: all of them
07:38 PM Tom_L: did you see em?
07:38 PM justan0theruser is now known as justanotheruser
07:39 PM zhanx: no i was joking
07:39 PM justanotheruser is now known as cata-foxes
07:40 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/encoder/encoder5.jpg
07:40 PM cata-foxes is now known as justanotheruser
07:40 PM Tom_L: left one is the keeper
07:41 PM zhanx: nice encoders
07:41 PM zhanx: never mind i saw the title after the fact
07:42 PM zhanx: good work tom, a little bit of chatter but good
07:43 PM Tom_L: most of that was me deburing them with an exacto
07:43 PM zhanx: its that running the limits of your machine? or limits of speed at that size?
07:43 PM zhanx: k
07:43 PM Tom_L: and the tab left from holding them
07:43 PM Tom_L: i didn't try to go faster with that little mill
07:43 PM Tom_L: 1/32nd em on the slots
07:43 PM Tom_L: 4k rpm 4 ipm
07:44 PM Tom_L: full depth
07:48 PM zhanx: nice work again Tom_L
07:49 PM Tom_L: you get your printer goin again?
07:49 PM zhanx: yep i blew all the drivers on it
07:50 PM Tom_L: was that part of the pins being off by one?
07:50 PM zhanx: everything works again but work and then brew day
07:50 PM zhanx: yep
07:51 PM zhanx: I didnt even thing the board could plug in like that
07:51 PM zhanx: think
07:51 PM bostonmacosx: hi hi
07:51 PM zhanx: hi
07:51 PM bostonmacosx: so...
07:52 PM bostonmacosx: I'm combingin an ESP32 with a servo
07:52 PM bostonmacosx: bbattery powered small machine...
07:53 PM bostonmacosx: I'm findinig that all servos use about 100mA
07:53 PM bostonmacosx: are there more effiiciient ways?
07:55 PM zhanx: what battery?
08:04 PM _unreal_: nothing like choking on something and getting hickups from it
08:10 PM bostonmacosx: well normal voltage and about 5000ma
08:35 PM _unreal_: been doing a little debating over where I should mount these on my cnc machine?
08:35 PM _unreal_: https://www.amazon.com/gp/product/B01G6PAN4K/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
08:50 PM bostonmacosx: on the table out front
08:50 PM bostonmacosx: where you stand
09:05 PM rue_: I have mine in the storage bin behind the mahcine
09:05 PM rue_: the bin of extra parts I need to put on at some point
09:07 PM rue_: https://www.aliexpress.com/item/1pcs-1NO-1NC-DPST-Emergency-Stop-Push-Button-Switch-AC-660V-10A-Switch-Equipment-Lift-Elevator/32830889719.html
09:07 PM rue_: amazons price isn't hat bad really
09:07 PM rue_: unless they get your for shipping
09:07 PM rue_: like that listing
09:09 PM rue_: https://www.aliexpress.com/item/LHLL-Red-Mushroom-Cap-1NO-1NC-DPST-Emergency-Stop-Push-Button-Switch-AC-660V-10A/32811889218.html
09:09 PM rue_: thats a better listing
09:11 PM rue_: and I'm not sensitive, geesh
09:13 PM zhanx: sure
09:22 PM _unreal_: so tired
09:34 PM orlock: rue
09:35 PM orlock: i was probing a 6 wire stepper last night , it's one of the factory ones that came with my "quality" telescope mount
09:36 PM orlock: 2x coils, each with 3 wires
09:36 PM rue_: yup
09:36 PM orlock: resistance i measure was 224 , 22, 246
09:36 PM rue_: thats unipolar
09:36 PM rue_: you can use them as bipolar
09:36 PM orlock: no, i think it's some weird-ass custom design
09:37 PM orlock: so 246 end-to-end
09:37 PM rue_: you did it wrong, somehow
09:37 PM orlock: and measuring from the center tap on either direction was 224 one way and 22 in the other
09:37 PM orlock: UNLESS
09:37 PM orlock: i cooked the stepper at some point
09:37 PM orlock: but it turns perfectly
09:37 PM orlock: and it's exactly the same on both coils
09:38 PM orlock: the other stepper is 4 wire - that one measured 17 on each coil
09:38 PM rue_: .....
09:38 PM rue_: your sure its two coils
09:39 PM rue_: didn't the driver have an insane amount of transistors?
09:39 PM orlock: https://pastebin.com/2Cr1aXGE
09:40 PM orlock: apparently it was designed to be able to run in a low piower mode
09:40 PM orlock: there's a relay on the PCB that i can hear click when i tell it to slew
09:41 PM orlock: slew = move faster
09:44 PM rue_: black and white are asupposed to be the commons
09:45 PM orlock: aka "center tap"?
09:45 PM rue_: yes
09:45 PM orlock: as it's in the "center" of the coil?
09:45 PM orlock: and usually the resistance on either side would be the same
09:46 PM rue_: but last week I pulled out a 5 wire motor that turned out to be a 5 point 'delta' wound
09:46 PM rue_: instead of a 4 coil star
09:50 PM orlock: higher resistance = lower draw?
09:52 PM * orlock is installing some security camera monitoring software
09:52 PM orlock: it's craaaaap
09:55 PM rue_: but they "never" do motrs like that
09:56 PM orlock: as far as i can tell it's custom built for this application
09:56 PM rue_: hwo about 'motion'
09:56 PM orlock: rue_: Heh, not up to me on the software - I've only been pulled in because it gave some crap error
09:57 PM rue_: must be a digimerge
09:57 PM orlock: "Truvision Navigator"
09:57 PM orlock: it gives a bogus errot which as far as i can tell is an unhandled excaption error
09:58 PM rue_: then atleast its not a digitmerge
09:58 PM rue_: digimerge
09:58 PM orlock: previous unit ran for 18 years
09:58 PM rue_: yea, but then the head wore out
09:58 PM orlock: apparently was developed by the-company-we-were 18 years ago
09:58 PM rue_: and nobody makes vcr tapes anymore
10:07 PM Tom_L: rue_
10:08 PM rue_: yes
10:08 PM rue_: have a suggestion for supper?
10:08 PM Tom_L: ck your mail in a week or so
10:08 PM Tom_L: food
10:08 PM rue_: hah, hmm I need to send you something oen day
10:08 PM rue_: I check my mail every day tho, still got 45 items from aliepxress
10:08 PM Tom_L: i had more but i spaced them too close and some got umm... buggered up a bit
10:09 PM rue_: heh
10:09 PM Tom_L: you get to debur em
10:09 PM rue_: oo I have a machine for that
10:09 PM rue_: :)
10:09 PM Tom_L: there's a tab on the OD that held them in place you need to file
10:09 PM rue_: belt sander
10:09 PM Tom_L: file
10:09 PM rue_: REALLY light touch!
10:10 PM Tom_L: i could probably save them all but didn't feel like sanding the edge tonight
10:11 PM rue_: :)
10:11 PM Tom_L: i ran a batch today while a service guy was here
10:11 PM rue_: I'd like to know how to photoetch aluminum
10:11 PM Tom_L: turns to powder or something.. not practical
10:12 PM Tom_L: just a regular envelope so we'll see if they get there
10:15 PM Tom_L: ~6 min each
10:15 PM Tom_L: how long did your printed one take?
10:16 PM rue_: hmm
10:16 PM rue_: akg, the computer is off now
10:16 PM rue_: I was printing them slow, about 10 mins I think
10:17 PM Tom_L: hope the slots aren't too close
10:17 PM Tom_L: 30
10:17 PM rue_: ~50% duty is fine
10:17 PM rue_: the problem now is positioning the interrupters
10:18 PM rue_: I'd liketo fix one, and have the other able to move/be adjusted
10:18 PM Tom_L: mount them 90 apart from each other
10:18 PM Tom_L: give you room to work
10:18 PM Tom_L: or 180 for that matter
10:21 PM rue_: its adjusting it to be *just right*
10:21 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/new_pulleys/old_pulley2.jpg
10:21 PM rue_: shoudln't need a mask, the interrupters I have are narrow beam
10:21 PM Tom_L: that one isn't quad but it never gave me any trouble
10:21 PM Tom_L: and it's quite a ways out on the edge
10:22 PM rue_: yup, the beam is quite far out soemtimes
10:35 PM orlock: Adjust? Cant you just print a mount that aligns them spot-on?
10:36 PM rue_: I'd rather adjust
10:36 PM orlock: one's offset from the other by 50% of the slot count isnt it?
10:36 PM rue_: yuppers
10:36 PM Tom_L: 6 degrees off
10:36 PM rue_: I was considering running it while I glue them
10:36 PM orlock: i guess that only positions it relative to the mounting bracket
10:37 PM Tom_L: what sort of mount do they have?
10:39 PM rue_: pcb :) so, wire-wrap-wire
10:39 PM zhanx: Tom_L, orlock , rue_ meet flav0r
10:39 PM flav0r: oh no not wire wrap
10:39 PM flav0r: hello
10:39 PM rue_: are you a bot?
10:39 PM zhanx: he is learning electronics so help him out
10:39 PM rue_: DONT LICK TEH RED WIRE!
10:40 PM flav0r: well .. learning robotics
10:40 PM flav0r: i guess learning electronics too since i just cobble stuff
10:40 PM flav0r: haha
10:40 PM zhanx: rue_, he is like me back in 07
10:40 PM flav0r: and nah im not a bot
10:41 PM flav0r: but i do change nicks a bit
10:41 PM zhanx: knows alot about nothing and needs to get his hands on the magic smoke
10:41 PM flav0r: on account of those clowns in #arduino banning me a lot :)
10:41 PM flav0r: i exploded some LED's the other day if that counts
10:41 PM rue_: we can help you with resistors
10:41 PM rue_: what do you know about volts and current?
10:42 PM zhanx: see rue he aleast didn't step on them
10:42 PM flav0r: https://imgur.com/a/3XNGARm
10:42 PM flav0r: that thing
10:42 PM flav0r: i gave those leds 12v instead of 5 !
10:42 PM flav0r: crackled .. then one exploded
10:42 PM flav0r: replaced them
10:43 PM flav0r: moved on !
10:43 PM orlock: ESP has a regulator i guess?
10:43 PM flav0r: yeah
10:43 PM flav0r: i probably shoulda put a 5v regulator ion too
10:43 PM orlock: what is it?
10:43 PM flav0r: or just pay attention to the power supply more
10:44 PM flav0r: oh i printed one of those 3d moons (from thingiverse)
10:44 PM flav0r: thats just a stand and some leds to illuminate it that i made
10:44 PM flav0r: leds are driven by ws2811
10:45 PM orlock: What's the PCB from ?
10:45 PM flav0r: i made it
10:45 PM orlock: "learning electronic" he says
10:45 PM orlock: s
10:45 PM orlock: :)
10:45 PM flav0r: i didnt say that
10:45 PM Tom_L: from the inside out
10:45 PM flav0r: lol
10:46 PM flav0r: but yeah .. just kinda try things out and cobble things together
10:46 PM flav0r: keeps me busy !
10:47 PM orlock: flav0r: https://www.youtube.com/watch?v=Slq_ag38eKc
10:47 PM orlock: same thing, esp8266, ws2811
10:48 PM flav0r: nice
10:48 PM flav0r: how big is that thing ?
10:50 PM orlock: ~22cm ish top to bottom
10:50 PM orlock: 19 led's in it iirc
10:50 PM flav0r: nice
10:51 PM zhanx: see flav0r, I was right
10:51 PM zhanx: you fit in here
10:52 PM flav0r: unblievable
10:52 PM flav0r: unbelievable
10:52 PM zhanx: it is due to that rare sense of humor
10:55 PM orlock: goddamn
10:55 PM orlock: another dud SSD in a new dell
10:55 PM orlock: as in, failed after usage
10:55 PM orlock: factory M2 ssd
10:57 PM flav0r: unlucky
10:57 PM zhanx: you all tell me to switch to SSD do i? no and this is why
10:57 PM flav0r: i always see dells with failed power supplies and motherboards .... always
10:57 PM flav0r: conspiracy ??? i dunno !
10:57 PM flav0r: kinda like apple products always end up with failures relating to charging
10:57 PM orlock: zhanx: this is just shit QC
10:57 PM orlock: change to an SSD, dude
10:57 PM orlock: just dont buy a fucking dell
10:58 PM zhanx: orlock, this Russian Double Chocolate Double Imperial Stout is outstanding
10:58 PM zhanx: 6 months aged
11:00 PM orlock: hmm sounds nice
11:00 PM orlock: wonder if anywheresells it here
11:01 PM orlock: hard enough finding my rocheforte
11:05 PM zhanx: making a ginger beer friday
11:05 PM zhanx: hopefully my laser modules come in soon
11:06 PM zhanx: i ordered 20 of them
11:33 PM rue_: <rue_> http://ruemohr.org/~ircjunk/projects/siggen/p1100642.jpg
11:33 PM rue_: <rue_> http://ruemohr.org/~ircjunk/projects/siggen/p1100643.jpg
11:33 PM rue_: <rue_> http://ruemohr.org/~ircjunk/projects/siggen/p1100644.jpg
11:38 PM rue_: theBear, you still alive?
11:52 PM rue_: dude?
11:52 PM rue_: YES!
11:52 PM rue_: your alone again
11:52 PM rue_: aaaawe.
11:53 PM rue_: question for you
11:53 PM rue_: yes
11:53 PM rue_: if the world isn't real, does how long you live matter?
11:53 PM rue_: yes...
11:53 PM rue_: but its not real
11:53 PM rue_: not the point
11:54 PM rue_: did the nothingness get them?
11:54 PM rue_: probably
11:59 PM flav0r: its real