#robotics Logs
Feb 25 2018
#robotics Calendar
02:50 AM rue_shop3: need to get back to cleaning up the shop
02:53 AM rue_shop3: need a large tote
02:53 AM rue_shop3: 1m^3 or so
04:25 PM rue_shop3: I need to be able to rip off projects in a stupidly short period of time
04:25 PM rue_shop3: how do I get there?
04:25 PM Tom_itx: persistence
04:26 PM Tom_itx: and tunnelvision
04:27 PM rue_shop3: yea, the overthreading is a problem
04:27 PM Tom_itx: or outsource them
04:27 PM rue_shop3: so is falling asleep every time a have a change to get something done
04:27 PM veverak: fuck me
04:27 PM veverak: benchmarking your code is interesting idea
04:27 PM Tom_itx: naw, that's ok
04:27 PM rue_shop3: not now thanks
04:28 PM veverak: "my brain, it hurts" kind of idea
04:28 PM rue_shop3: wait what are you... nevermind
04:28 PM * Tom_itx smacks rue_shop3 with a wakeup stick
04:28 PM veverak: https://pastebin.com/LeaA7TJP
04:28 PM veverak: so, I have this code to insert triangles into a tree
04:28 PM veverak: and it can insert "butch of triangles" at a time
04:29 PM veverak: *batch
04:29 PM veverak: so, i tried to benchmark various sizes of the batch to insert
04:29 PM rue_shop3: and?
04:29 PM veverak: I've got WTF feeling from the results, there is big step in speedup 32->64
04:29 PM veverak: (results are in the pastebin)
04:29 PM rue_shop3: triangle dont get added?
04:29 PM veverak: they do
04:30 PM veverak: but between 32 size of batch and 64, there is 40x speedup
04:30 PM veverak: something that keeps surprising me
04:30 PM rue_shop3: Tom_itx, do I have to put on a horse blind to achive this tunnel vision thing?
04:30 PM veverak: things is
04:31 PM veverak: do I fucked up something and allowed the compiler to optimize something it should not and this does not reflext real world usage
04:31 PM rue_shop3: 3d triangles?
04:31 PM Tom_itx: rue_shop3, no just set goals and stick to the schedule
04:31 PM veverak: or is this real, there is big speedup at specific batch size?
04:31 PM veverak: rue_shop3: yeah, into octree
04:31 PM veverak: rue_shop3: and by octree is memory optimized, so a lot of information about nodes is calculated on the fly
04:31 PM veverak: hence the reason to "batch" insert the triangles
04:32 PM veverak: *my octree
04:32 PM * rue_shop3 looks around the shop
04:32 PM rue_shop3: maybe there is a double edged blade here
04:32 PM rue_shop3: I have everything here I need to build anything
04:32 PM rue_shop3: ""
04:33 PM rue_shop3: what am I spending too much time doing
04:33 PM rue_shop3: aside from sleeping
04:33 PM veverak: nuh
04:33 PM veverak: profiling tomorrow it is
04:33 PM rue_shop3: and eating, and...
04:33 PM rue_shop3: the new carrige I made for the 3d printer isn awesome
04:33 PM Tom_itx: be more efficient at it all
04:34 PM veverak: rue_shop3: you know that at certain moment
04:34 PM veverak: rue_shop3: only viable speedup in ones effeciency is to use other people for labor?
04:34 PM Tom_itx: doesn't work
04:34 PM rue_shop3: is there a endorphin/hydrenolyn mix available anywhere?
04:34 PM Tom_itx: you gotta teach em everything these days
04:34 PM orlock: ritalin
04:34 PM veverak: you got be better at looking ofr them ;)
04:35 PM Tom_itx: sounds like a professor with a fresh grant
04:35 PM rue_shop3: as I didn't get anything else out of the robotics kids, I suspect I should use my projects as the educational base forward
04:35 PM orlock: rue_shop3: hey, barrel style power jacks/plugs - how are they generally measured?
04:36 PM Tom_itx: mm
04:36 PM rue_shop3: inner and outter dia
04:36 PM Tom_itx: 2.5 od
04:36 PM Tom_itx: etc
04:36 PM rue_shop3: china has a favorite, use that
04:36 PM orlock: jaycar only seems to have one number
04:36 PM orlock: which seems suspiciiusly small, so i'm thinking it's the internal pin diameter
04:36 PM orlock: rue_shop3: that would be the one on the arduino's?
04:36 PM orlock: as thats the one i was going for
04:36 PM rue_shop3: Tom_itx, did you find a power meter?
04:37 PM orlock: just wondering what it actually is
04:37 PM Tom_itx: rue_shop3, i'll likely get the one you linked
04:37 PM Tom_itx: i was just looking for a shorter wait time
04:37 PM rue_shop3: I didn't price check
04:37 PM Tom_itx: you know .... time?
04:37 PM rue_shop3: chineese newyear is over
04:37 PM Tom_itx: still 4 weeks out
04:37 PM Tom_itx: but it's not a critical part
04:37 PM rue_shop3: why the hurry?
04:38 PM Tom_itx: i dunno, ask the poor sherline motor
04:38 PM Tom_itx: i should put the old one on and keep the new one as a spare
04:39 PM Tom_itx: then i wouldn't feel so bad finding it's breaking point
04:39 PM rue_shop3: the other problem I have is optimization lockouts
04:39 PM rue_shop3: option A will work but is not as good as option B,
04:40 PM rue_shop3: each have assets that are different and equal
04:40 PM rue_shop3: so I lock
04:41 PM Tom_itx: choose a fork in the road and don't rack yourself by going straight
04:41 PM Tom_itx: you will get nowhere
04:42 PM rue_shop3: I have that problem with ANY decision that dosn't matter
04:42 PM rue_shop3: I lock up
04:42 PM rue_shop3: like naming a computer
04:42 PM rue_shop3: instant lock
04:43 PM Tom_itx: when i made the mill, i drew up the design and started building it. found out it was a poor design so redesigned it and went on
04:43 PM Tom_itx: didn't stop to worry about lost time or material
04:43 PM Tom_itx: which got reused
04:44 PM Tom_itx: i learned from the first one and kept going
04:44 PM Tom_itx: if i was waiting for something, i did some other part while waiting
04:45 PM rue_shop3: maybe if I can personality split more, one of me can just tell the other what to do and there is no thinking involved
04:45 PM Tom_itx: no
04:45 PM rue_shop3: wont work, you dont listen
04:45 PM rue_shop3: :P
04:45 PM Tom_itx: you'd just stand there arguing with yourself
04:45 PM rue_shop3: he does
04:45 PM rue_shop3: hmm, I need food, again
04:45 PM Tom_itx: i need a design writeoff
04:45 PM Tom_itx: waiting for the inspection team again...
04:46 PM rue_shop3: snow
04:46 PM rue_shop3: the other fellow isn't in
04:46 PM Tom_itx: so?
04:46 PM Tom_itx: so?
04:46 PM rue_shop3: going to make up a head, but I'm on the printer just now
04:46 PM rue_shop3: <stand by...>
04:46 PM Tom_itx: got a new design ready?
05:17 PM rue_shop3: no, I been working on my other things
05:17 PM rue_shop3: when I'm awake
05:18 PM rue_shop3: its a slow project
05:18 PM rue_shop3: since we finished the last batch we got an order for 4 more
05:18 PM rue_shop3: but the snow piled up means we cant use the router to make the tubes
05:20 PM Tom_itx: why? is it outside?
05:21 PM Tom_itx: also a cnc-able part
05:22 PM rue_shop3: no
05:22 PM Tom_itx: damn, they want about 5x too much for this spindle upgrade
05:23 PM rue_shop3: we use a router and jigs to get the two slots in the end 180 apart
05:23 PM rue_shop3: yea, after seeing the prices on the brushless motors Idecided to just consume brushed ones
05:23 PM Tom_L: http://glockcnc.com/#!/750-Watt-Motor-Controller-Continuous-Duty-Sherline-&-Taig-or-Universal-Headstocks-1-HP/p/34923060/category=8597972
05:24 PM Tom_itx: i don't care what kind it is, i'd just like more hp on it
05:24 PM Tom_itx: what are the slot dimensions?
05:28 PM Tom_L: http://ruemohr.org/%7Eircjunk/not_public_dont_open/tom/p1090642.jpg
05:28 PM Tom_itx: did you trim the top back on that one to fit the new part?
05:29 PM rue_shop3: dunno its all by jig
05:29 PM rue_shop3: not yet
05:29 PM rue_shop3: trying to focus on my new printer
05:29 PM Tom_itx: the tube looks cut is why i wondered
05:31 PM rue_shop3: th top tabs are broken off on that one
05:31 PM rue_shop3: it was a repair that came in
05:31 PM Tom_itx: oh
05:31 PM rue_shop3: were saving it ot make a shorter one out of
05:31 PM rue_shop3: cause that tube is $$$$
05:31 PM Tom_itx: yeah
05:31 PM Tom_itx: i can probably get tube from the surplus i bet
05:32 PM Tom_itx: what's the OD ID of it?
05:32 PM Tom_itx: 1" OD?
05:32 PM Tom_itx: i may have a piece out there
05:33 PM rue_shop3: I should be focusing on the PI camera
05:33 PM rue_shop3: 1" OD 0.67 wall
05:33 PM rue_shop3: --------------------------- THE TUBE IS --------------------- >1" OD 0.67 wall
05:34 PM rue_shop3: (just marking that for later)
05:34 PM Tom_itx: i've got a file
05:34 PM rue_shop3: I'd like to send ya a kit
05:34 PM rue_shop3: what do you need
05:34 PM Tom_itx: no clue
05:34 PM rue_shop3: handle, tube, head(modified)
05:34 PM Tom_itx: whatever parts you didn't post
05:35 PM rue_shop3: you have lever, trigger, and head
05:35 PM Tom_itx: .67 wall is pretty thick
05:35 PM rue_shop3: spring, send ya a spring
05:35 PM Tom_itx: you mean .067" ?
05:35 PM rue_shop3: .067
05:35 PM rue_shop3: ahhahaha
05:35 PM rue_shop3: PRINTER!
06:38 PM Tom_itx is now known as Tom_L
08:08 PM rue_shop3: ever looked at a 3d printer and realized that if you assemble half of it backwards, everything would just fit better?
08:08 PM Tom_L: hah
08:11 PM rue_shop3: on the X carrige, all the electronics are on the opposite side of the machine from the controller where they all have to be wired to...
08:11 PM rue_shop3: !??!?
08:11 PM rue_shop3: this is what happens when you follow the instructions
08:11 PM orlock: eh, mine didnt come with a fixed point to wire the controller
08:27 PM ASRock_pc is now known as Tom_itx
08:27 PM Tom_itx is now known as Guest21471
08:53 PM rue_shop3: I'v prettymuch hand selected or redesigned every part on this printer
08:53 PM Tom_shop: we could make it from aluminum :D
08:57 PM orlock: 3mm sheet steel
09:32 PM rue_shop3: ahahah
09:33 PM rue_shop3: the limit switch has to stay on the left side
09:33 PM rue_shop3: so turning it all around like *that* puts the motor on the opposite side from the limit switch
09:33 PM rue_shop3: *sigh*
09:33 PM * rue_shop3 thinks
09:34 PM rue_shop3: < <
09:34 PM rue_shop3: > >
09:34 PM rue_shop3: unless the X limit switch is on the carriage and not the rail
09:34 PM rue_shop3: which means that I wouldn't lose 5mm to the switch holder...
09:36 PM rue_shop3: what a tangled web we weave when first we decide to redesign a part of a machine....
11:12 PM rue_shop3: ok I'm starting to think that I shouldn't design ANYTHING without it having wire anchors all over it
11:44 PM rue_shop3: ok I need 14 wires to the carriage
11:44 PM rue_shop3: like OOF.
11:44 PM Tom_itx: ribbon
11:45 PM rue_shop3: 5 shielded
11:45 PM rue_shop3: hmmm
11:46 PM rue_shop3: and 8 power
11:47 PM rue_shop3: I like how its comming togethor tho
11:47 PM rue_shop3: I should post the images
11:58 PM rue_shop3: I dont know whats happening more, the building or the fix list
11:58 PM rue_shop3: "the rod is long enough, just not in the right spot. (the end)"