#garfield Logs
Apr 23 2018
#garfield Calendar
12:00 AM katsmeow: *every* freakig things had to be mod'd, even the IEEE buss controller
12:03 AM rue_mohr: ooo, your the first person I know to have bought something from the back of a magazine
12:03 AM katsmeow: IEEE-488 vs HPIB is ONE acive pullup vs passive resistor
12:03 AM rue_mohr: I presume you wrote to them from a file?
12:03 AM katsmeow: it was 1983, there was no internets
12:03 AM katsmeow: yeas
12:03 AM katsmeow: the file could be ram tho
12:03 AM rue_mohr: binary file? .hex? .s19 ?
12:03 AM katsmeow: binary
12:03 AM rue_mohr: what made the binaries?
12:03 AM katsmeow: i ran the code, then burned it
12:03 AM katsmeow: me
12:03 AM katsmeow: peek/poke
12:03 AM rue_mohr: oh
12:03 AM rue_mohr: translate your own opcodes!
12:03 AM katsmeow: writing to eprom was read memory, poke to eprom
12:03 AM rue_mohr: the apple II has an assembler in the monitor, a really basic one
12:03 AM katsmeow: i skipped the whole assy language part, looked up and calculated the machine bytes
12:03 AM rue_mohr: yea, I did that with my z80
12:03 AM * rue_mohr digs
12:04 AM rue_mohr: 0900 00 NOP
12:04 AM rue_mohr: 0901 00 NOP
12:04 AM rue_mohr: 0902 00 NOP
12:04 AM rue_mohr: 0903 CD CALL INCHAR (0949)
12:04 AM rue_mohr: 0904 49
12:04 AM rue_mohr: 0905 09
12:04 AM rue_mohr: 0906 FE CPA,2D (ASCII DASH)
12:04 AM rue_mohr: 0907 2D
12:04 AM rue_mohr: 0908 C2 JNZ,0903
12:04 AM rue_mohr: 0909 03
12:04 AM rue_mohr: 090A 09
12:04 AM rue_mohr: I held a strict format
12:05 AM rue_mohr: later I made a program that would simulate a printer, and write the data column to the memory address
12:05 AM rue_mohr: skip the rest of the line
12:05 AM rue_mohr: I'd put 3 nops in every so often, for a jump, incase an add ran out of room
12:05 AM katsmeow: anyhoo, i wana adc temperature, voltage, current, and send it over cat5 cable, recieve from cat5 to set voltages, toggle things
12:06 AM * rue_mohr nods
12:09 AM katsmeow: brains switched off, sure i am forgetting something
12:09 AM rue_mohr: it can probably wait
12:09 AM rue_mohr: I liked tricks like pushing the return address of a fn you needed called after you were done
12:09 AM rue_mohr: I learned a lot reading the monitor rom from the IIe
12:18 AM rue_mohr: dryer did NOT do an awesome job on my blanker
12:18 AM rue_mohr: blanket
12:18 AM katsmeow: isit defective? you own a defective something??
12:19 AM katsmeow: next best thing to a real dryer is a tallbox to hang clothes on clotheshangers in, with a "window box fan" at the top pullingair thru it
12:26 AM * katsmeow powers herself down
12:27 AM katsmeow: gnites
12:58 AM zhanx: ok kid is finally out
12:59 AM zhanx: what i miss
12:59 AM zhanx: rue_mohr: you better check that air tank math again
01:00 AM zhanx: you forgot one key thing
01:52 AM rue_bed: p1v1=p2v2
06:32 PM zhanx: rue_mohr: forgot to ask, how am i mounting this j head?
08:47 PM rue_mohr: there are two holes in the extruder
08:47 PM rue_mohr: the extruder is mounted to the carriage
08:55 PM zhanx: lag
08:55 PM zhanx: ugh
08:56 PM zhanx: ok rue pic of your mount if you can
09:17 PM rue_mohr: ok
09:18 PM rue_mohr: you want a picture of my mounted nozzel...
09:18 PM rue_mohr: have to give me a min
09:29 PM zhanx: k
09:29 PM zhanx: that was 12
09:35 PM rue_mohr: oh right
09:36 PM rue_mohr: thats why I was setting up my camera
09:40 PM rue_mohr: cap, iv done nothing sofar today
09:40 PM rue_mohr: 7:30 crap
09:44 PM rue_mohr: http://ruemohr.org/~ircjunk/projects/reprap/p1090973.jpg
09:45 PM rue_mohr: http://ruemohr.org/~ircjunk/projects/reprap2/p1090972.jpg
09:45 PM rue_mohr: http://ruemohr.org/~ircjunk/projects/reprap2/p1090974.jpg
09:45 PM rue_mohr: the old one has two screws jammed in it, the new one just has one
09:45 PM rue_mohr: they are both solid, but the scerws are rather wedged in
09:46 PM rue_mohr: oops
09:46 PM rue_mohr: those are supposed to be in the toher folder
09:47 PM rue_mohr: http://ruemohr.org/~ircjunk/projects/reprap3/slide.htm
09:47 PM rue_mohr: you know the painfull detiail in that image set was for you right?
09:48 PM rue_mohr: kinda missed that detail tho
09:48 PM zhanx: thank you
09:48 PM zhanx: wait i said what?
09:49 PM rue_mohr: you wanted to see my nozzel
09:49 PM zhanx: yyyyyes
09:50 PM rue_mohr: oops, supper cooking
09:50 PM zhanx: nozzle mount for the j head
09:55 PM rue_mohr: tyhats it
09:56 PM rue_mohr: can you see how it mounts?
09:58 PM rue_mohr: arg, I cant stop putting WAY too much stuff in the burritos
10:04 PM zhanx: ok
10:04 PM zhanx: fine i will make it workl
10:04 PM rue_mohr: show me whay tou ghgasve\
10:04 PM rue_mohr: tryuing to eat
10:05 PM rue_mohr: step one , place nozzel into extruder
10:05 PM rue_mohr: \
10:05 PM rue_mohr: step 2, insert 4-40 screw
10:05 PM rue_mohr: done
10:05 PM rue_mohr: ??????????????????
10:07 PM rue_mohr: zhanx, ????
10:07 PM zhanx: one minute i was fixing my lag
10:11 PM zhanx: https://imgur.com/a/mjmuEfe
10:12 PM rue_mohr: that right
10:12 PM rue_mohr: two holes in the sides top to bottom
10:12 PM zhanx: so i ned to make a plate then
10:12 PM rue_mohr: (top and bottom of the iamge)
10:12 PM rue_mohr: no
10:13 PM rue_mohr: no
10:13 PM rue_mohr: look at the pics
10:13 PM rue_mohr: <rue_mohr> http://ruemohr.org/~ircjunk/projects/reprap/p1090973.jpg
10:13 PM rue_mohr: <rue_mohr> http://ruemohr.org/~ircjunk/projects/reprap2/p1090972.jpg
10:13 PM rue_mohr: <rue_mohr> http://ruemohr.org/~ircjunk/projects/reprap2/p1090974.jpg
10:13 PM rue_mohr: side
10:13 PM zhanx: i am confused
10:13 PM rue_mohr: see the holes in the side
10:13 PM rue_mohr: the iamge you sent me, rotate 90 degree on X axis
10:13 PM zhanx: no side holes on my parts
10:14 PM zhanx: that is what got me
10:14 PM rue_mohr: I can see them
10:14 PM rue_mohr: lay it flat and take another pic
10:14 PM zhanx: k
10:14 PM rue_mohr: they go thru the pocket
10:15 PM rue_mohr: you know those pipe fittings that use a circum-gasket, and the male bit has a groove int eh side, you put a pin/clip thru the female block and the clip just holds it in, the gasket seals it?
10:17 PM zhanx: umm yea
10:17 PM zhanx: https://imgur.com/a/7HhvhLJ
10:18 PM zhanx: give it 10 seconds to upload
10:18 PM rue_mohr: https://imgur.com/a/mOtY638
10:18 PM rue_mohr: two holes right there
10:19 PM zhanx: no holes there
10:19 PM zhanx: so i need to drill them
10:19 PM rue_mohr: .... WTF happened to the holes
10:20 PM zhanx: hence why i asked
10:20 PM rue_mohr: there are some bits you have to cut away on that peice
10:20 PM zhanx: yep i know some of that
10:20 PM rue_mohr: that bit on the bottom right, thats the other piece you used to prop it up right?
10:20 PM zhanx: no that is how it came
10:21 PM rue_mohr: wtf, turn over?
10:21 PM zhanx: that is two photos
10:21 PM rue_mohr: no I mean please turn it over from the last photo and show...
10:22 PM zhanx: wait one will take all angles
10:22 PM rue_mohr: I'm not familiar with that edit of that peice
10:23 PM rue_mohr: because of the infill, its not good to drill printed parts
10:23 PM zhanx: uploading them now
10:24 PM rue_mohr: I'll show you a plate I made for mine and never used
10:24 PM zhanx: i was thinking a c clip
10:26 PM zhanx: my upload speed sucks
10:28 PM zhanx: rue when these get upload, you will agree, drill press and make it easier
10:32 PM rue_mohr: http://ruemohr.org/~ircjunk/images/p1090976.jpg
10:32 PM rue_mohr: http://ruemohr.org/~ircjunk/images/p1090975.jpg
10:32 PM rue_mohr: it gets sandwhiched between the extruder and the carriage, so thats all thats needed
10:32 PM rue_mohr: I never used them
10:32 PM zhanx: k
10:32 PM rue_mohr: _NO_ more trips out to the shop tonight
10:32 PM zhanx: got it
10:33 PM zhanx: was trying to make a 3d printer is all
10:33 PM rue_mohr: today ruined the next month, sorry if I bite
10:33 PM zhanx: no today sucked for me also
10:34 PM Tom_L: bad one for everyone it seems
10:34 PM rue_mohr: zhanx, is the image I posted what you were thinking
10:35 PM zhanx: customer on the last job lost i kid you not the power cord for the pc
10:35 PM zhanx: not the job i took
10:35 PM zhanx: Rue it is
10:35 PM rue_mohr: ok
10:35 PM rue_mohr: it'll work
10:35 PM zhanx: k, i was thinking that had to ask
10:36 PM rue_mohr: yea, the holes are missing, I dont get it
10:36 PM rue_mohr: in the picket for the nozzel, there aren't holes from that end are ther?
10:36 PM zhanx: i can drill the holes
10:36 PM rue_mohr: I mean, its not just covered over on the last layer is it?
10:36 PM rue_mohr: because of the infill, its not good to drill printed parts
10:37 PM zhanx: let me check
10:37 PM zhanx: its 100% infill so no
10:37 PM rue_mohr: not likey
10:37 PM rue_mohr: even 50% is insane
10:38 PM zhanx: you did read the auction and recommended it to tom also
10:38 PM rue_mohr: I have a sanity filter tho
10:38 PM rue_mohr: I usually dont see rediculons
10:39 PM zhanx: you said, "its an upgraded set, its ok"
10:39 PM rue_mohr: yes, the part shapes looked good
10:39 PM zhanx: fyi a toothpick and my hands pierced the holes
10:39 PM rue_mohr: most/all of the things in the 'origional' design that are stupid had fixes
10:40 PM zhanx: just took me a while to find them
10:40 PM rue_mohr: oh, they WERE there!?
10:40 PM rue_mohr: I could see a dimple in the image
10:40 PM zhanx: no dimple
10:40 PM zhanx: pressure
10:41 PM rue_mohr: https://imgur.com/a/mOtY638 the right arrow, I could see something
10:41 PM rue_mohr: in the origional of that, but more in the image when you had it laying down
10:41 PM zhanx: sadly that is not the side i found them on
10:41 PM rue_mohr: they go all the way thru
10:42 PM zhanx: one side is good enough
10:42 PM rue_mohr: should fit 4-40
10:42 PM zhanx: need to ream it first
10:42 PM rue_mohr: goes into that larger groove
10:42 PM rue_mohr: yea, you have to cut away all of the bridge material
10:42 PM rue_mohr: its quite thin
10:42 PM rue_mohr: (usually just 1 layer)
10:43 PM zhanx: what time line is this?
10:43 PM rue_mohr: betta 421-eater8.511
10:44 PM rue_mohr: oh wait, what did you mean
10:44 PM zhanx: something cause i am making a print head
10:44 PM rue_mohr: oh,
10:44 PM rue_mohr: I have no idea where your at
10:44 PM rue_mohr: I need an overall
10:45 PM zhanx: 2 layers vs 1
10:45 PM rue_mohr: ok
10:45 PM rue_mohr: if their good thin layers, 2 is reasonable
10:45 PM zhanx: i am waiting on the linear bearings
10:45 PM rue_mohr: no, spin out the plastic ones and use those
10:46 PM rue_mohr: they will do better than the linear balls
10:46 PM zhanx: no they were printed for linear
10:46 PM zhanx: so i have to print better ones
10:46 PM rue_mohr: yea, set came with like 6 plastic printed ones
10:46 PM zhanx: not mine
10:46 PM rue_mohr: cylinders
10:46 PM rue_mohr: ?
10:46 PM rue_mohr: same size as the metal ones?
10:47 PM rue_mohr: got that kit listing?
10:47 PM zhanx: mine was cheaper with out them
10:47 PM rue_mohr: I'm sure they were in there
10:47 PM zhanx: one sec
10:47 PM rue_mohr: oh
10:47 PM rue_mohr: the metal ones suck
10:47 PM rue_mohr: I'm chaning my whole design to get around using them
10:47 PM rue_mohr: wait, you know what, they will work, and we need to start with that
10:48 PM rue_mohr: we can hit it with all the upgrades later
10:48 PM rue_mohr: get 'er working first
10:48 PM zhanx: https://www.ebay.com/itm/132225780954
10:49 PM rue_mohr: oooh
10:49 PM rue_mohr: that block comes off, thats what I was seeing
10:49 PM zhanx: first thing is working then print all upgrades and then a laser scanner
10:49 PM zhanx: ?
10:49 PM rue_mohr: its a print support block for the pinion that the hinged bearing sits on
10:49 PM zhanx: oh yea
10:49 PM zhanx: i know that part
10:50 PM rue_mohr: ok, yea, no printed sliders
10:50 PM zhanx: nope
10:50 PM rue_mohr: the rings for the bearings usually dont work out
10:50 PM rue_mohr: top right x 3
10:50 PM zhanx: they will work for now
10:50 PM zhanx: upgraded 2nd
10:50 PM zhanx: bed level first
10:50 PM rue_mohr: yes
10:51 PM zhanx: fyi that piece is off already
10:51 PM rue_mohr: nd 50%infill
10:51 PM zhanx: doing clean up etc
10:52 PM zhanx: let me see if i can link the email
10:52 PM zhanx: he messed up
10:53 PM zhanx: oh only 8 parts printed at 100% infill
10:53 PM rue_mohr: k
10:54 PM zhanx: least i am putting it together etc..
10:54 PM zhanx: stll
10:54 PM rue_mohr: yes, this is awesoe
10:54 PM zhanx: since i broke 2 scanner glass tables
10:55 PM zhanx: tomorrow i am having one cut
10:55 PM rue_mohr: are they tempered?
10:55 PM zhanx: yep
10:55 PM rue_mohr: tiny little peices?
10:55 PM zhanx: 5 bucks
10:55 PM zhanx: tiny tiny
10:55 PM rue_mohr: I recommand mirror
10:55 PM rue_mohr: its flatter
10:55 PM zhanx: mirror is more
10:55 PM rue_mohr: and you can buy one from the thrift store and diy cut it...
10:56 PM rue_mohr: my bud had his glass-smith dad make him a peice,
10:56 PM zhanx: rue you really thing my ogre ass can cut a mirror without breaking it?
10:56 PM rue_mohr: it was SO warped we couldn't use it
10:56 PM zhanx: lets be real here
10:56 PM rue_mohr: had to add two layers of tape in one area to get it mostly flat
10:57 PM rue_mohr: cmon, the elves can do it with just a boxknife
10:57 PM zhanx: you know damn well i break thing and don't mean to
10:57 PM rue_mohr: ZZIIIIIIIIIIIIIIIIIIIIIIIIIP, CLICK!
10:57 PM rue_mohr: #%@#$^!@!#$%?!@#??!@?$?@?$????
10:58 PM zhanx: normal day for me
10:58 PM zhanx: i am the most careful person i know
10:58 PM rue_mohr: it only took me 4 tries to get a good cut
10:58 PM rue_mohr: lucky I collected so many mirrors for the solar project
10:59 PM zhanx: rue_mohr: if i don't move while walking by you i might hurt your walking into you
10:59 PM zhanx: and your is what ever bounces off stuff
11:01 PM rue_mohr: huh, no printed bushings
11:02 PM zhanx: oddly
11:02 PM zhanx: i listened
11:02 PM rue_mohr: no I missed it
11:02 PM rue_mohr: honestly, 99% of people throw them out and get the metal ones
11:02 PM rue_mohr: you need to preload them
11:03 PM zhanx: it happens and i still listened with out research
11:03 PM rue_mohr: well I can see that I didn't pick up on that o the missing holes
11:03 PM zhanx: rue its mechanical that i can do
11:03 PM rue_mohr: I was looking for a few fritical things that it does have
11:03 PM zhanx: its too easy
11:04 PM zhanx: can roll it by hand and fell the bind
11:04 PM zhanx: feel
11:04 PM rue_mohr: usually the metal bearings are sloppy in the rod
11:04 PM zhanx: rue_mohr: its the knack once again
11:04 PM rue_mohr: that or the rod is too big and just dont perform a nogo
11:04 PM rue_mohr: mmm
11:04 PM zhanx: this part i got
11:05 PM rue_mohr: dont skip greasing them... they DO need it
11:05 PM rue_mohr: :)
11:05 PM zhanx: the dial it in well, you can help with that
11:05 PM zhanx: i will
11:05 PM rue_mohr: I dind't redo after my pre-assemble
11:05 PM zhanx: zero grease
11:05 PM rue_mohr: yep, getting the numbers right is fun
11:05 PM rue_mohr: do you have any digital calipers?
11:06 PM zhanx: yes
11:06 PM rue_mohr: should be abel to get it to ~.1% then
11:06 PM zhanx: .01
11:07 PM rue_mohr: there is software-step rounding..
11:07 PM rue_mohr: so, laser cutter?
11:07 PM zhanx: next year on that
11:07 PM zhanx: i can do .01 by hand
11:08 PM zhanx: slow and steady
11:08 PM rue_mohr: https://www.thingiverse.com/thing:2646266
11:09 PM rue_mohr: :) that X axis looks a bit sloppy
11:09 PM zhanx: wonder why
11:09 PM zhanx: its not screwed down
11:10 PM rue_mohr: https://www.thingiverse.com/thing:2349232
11:10 PM rue_mohr: looks like its a theme
11:10 PM zhanx: its like being an engineer is a new thing now
11:11 PM zhanx: does it skip like a record?
11:11 PM zhanx: rue_mohr: i am planning on ordering a *few* magnets
11:12 PM zhanx: to hold stuff in place
11:20 PM rue_mohr: I'm interested
11:33 PM zhanx: kid is up again
11:33 PM zhanx: but
11:33 PM zhanx: think 5 pound pull 3 pound use
11:34 PM zhanx: 3 magnets per use to make sure it stays
11:34 PM zhanx: with a servo to lock it in
11:37 PM rue_mohr: ?
11:38 PM rue_mohr: preloading linear bearings with magnets?
11:38 PM * rue_mohr recalculates a bunch of projects using magnets instead
11:39 PM zhanx: linear
11:39 PM katsmeow: also, the iron swarf will pack into the bearings, on the rod, and take up slack as the bearings grind down
11:39 PM zhanx: how do you think it would preload
11:39 PM rue_mohr: hopefully not on a plotter
11:39 PM rue_mohr: hi kat
11:39 PM zhanx: Evening Kat
11:39 PM * katsmeow waves hie
11:40 PM zhanx: rue_mohr: even more, reverse the magnets to float them
11:42 PM katsmeow: float vs pull down? so the rails float abstractly above the track?
11:42 PM zhanx: around
11:43 PM katsmeow: around, in some place within the accuracy of the pricey linear bearings
11:43 PM zhanx: with out the cost of them
11:44 PM rue_mohr: I'm becomming a bushing fan
11:44 PM katsmeow: but if "pull down" is a different place than "float up", how accurate is that?
11:44 PM rue_mohr: as long as its against a ref surface what does it matter?
11:45 PM katsmeow: rue, i have some fans with bushings, and theycan wake my up chattering, and no way to oil them without disassembly
11:45 PM zhanx: well the magnets are not the reference point
11:45 PM katsmeow: rue, it's a diferent ref point in each case
11:46 PM rue_bed: yea, I'm thinkin
11:46 PM katsmeow: sorry
11:46 PM rue_bed: srry?
11:46 PM katsmeow: for causing trouble again
11:46 PM rue_bed: oh, I was worrried I had the camera on while I was changing
11:47 PM rue_bed: no trouble kat
11:48 PM rue_bed: ok, the goal of the next 8 hours is NOT sleep, but rest
11:48 PM rue_bed: so I realized a parallel thread on my supper machine
11:48 PM rue_bed: rice dispencer
11:49 PM zhanx: vacuum ?
11:49 PM rue_bed: I have parts comming in for the water dispencer
11:49 PM rue_bed: no, I'm going with a type of horizontal rotary conveyor
11:49 PM rue_bed: so I can meter as I go
11:50 PM rue_bed: vacuum....
11:51 PM rue_bed: not sure how to meter with a vacuum
11:51 PM zhanx: vacuum as in pressure
11:51 PM rue_bed: yea
11:51 PM zhanx: and cook it like that
11:51 PM rue_bed: I need to meter the amount of rice
11:52 PM rue_bed: one yogart tub
11:52 PM rue_bed: (yogart cup)
11:52 PM zhanx: that is the easy part
11:52 PM rue_bed: whats the not easy part?
11:52 PM zhanx: metering the amount
11:52 PM rue_bed: easy with a conveyor
11:53 PM zhanx: then vacuum cook it
11:53 PM zhanx: faster
11:53 PM rue_bed: each section of the conveyor holds a known volume
11:53 PM rue_bed: I dont know if boiling rice counts @ 25c
11:54 PM rue_bed: tho, its an idea for cooking food that isn't too hot when your done
11:54 PM rue_bed: not sure the chemical reactions happen the same
11:54 PM zhanx: why not make it 20c?
11:54 PM rue_bed: THATS JUST TOO COLD Z!
11:54 PM katsmeow: why not use a capped pvc pipe sawn downto hold the amount of rice you want, then tip into a chute, and forget counting smaller pods on a conveyor belt?
11:54 PM zhanx: or that
11:55 PM rue_bed: valving it off is trickey, lots of designs get jammed up with the material their operating
11:55 PM katsmeow: vacuum cook ? i thought pressure cookers work faster?
11:55 PM zhanx: rue could use a toaster to cook the rice
11:55 PM rue_bed: one grain at a time?
11:55 PM zhanx: lower the pressure and cook at temp
11:55 PM katsmeow: rue, tip over, pour out
11:55 PM rue_bed: in a low-g gravity fed toaster?
11:56 PM rue_bed: kat I dont know how to without rice getting stuck in the shutoff
11:56 PM * zhanx adds it to his project list
11:57 PM katsmeow: shut off?
11:58 PM rue_bed: you have to shut the hopperoff before you pour
11:59 PM zhanx: or just rotate it
11:59 PM katsmeow: or that
11:59 PM zhanx: rue_bed: they solved that in the 1800's in the USA, maybe in 2020 they can solve in Canada