#robotics Logs
Jul 01 2018
#robotics Calendar
05:01 PM rue_shop3: I'd like to make a new bench supply
05:04 PM rue_shop3: I'd like it to be really small so its out of the way
05:04 PM rue_shop3: I'd like it to have 2 outputs
05:04 PM rue_shop3: I'd like for it to be 800w
05:04 PM rue_shop3: I'd like it to be usb connectable
05:04 PM rue_shop3: I'd like it to have a nice big screen that shows all the numbers for it
05:04 PM rue_shop3: I'd like it to have a keybaord so its easy to enter new settings
05:04 PM rue_shop3: I'd like the power cord to be really small so that its not hard to route it on the bench
05:04 PM rue_shop3: I'd like nice big terminals that are easy to connect wire to
05:04 PM rue_shop3: I'd like the power connectors to be small so they dont take up much space
05:06 PM rue_shop3: I'd like presets so that I can use it as a 120V/240V 50/60Hz inverter for 1, 2, and 3 phase... oh hell, 4 phase too
05:07 PM rue_shop3: Id like 0-20mA and 0-10V control for use as a servo amplifier
05:07 PM Tom_L: you can't buy one of those
05:07 PM rue_shop3: I'll have to build one...
05:07 PM Tom_L: you won't build one of those
05:07 PM Tom_L: you _will_ start
05:07 PM rue_shop3: but.... I dont know what colour to paint it, so I'll have to shelf the project till I decide
05:08 PM Tom_L: i like blue
05:08 PM rue_shop3: yes, but blue isn't a bench device colour
05:08 PM rue_shop3: that silly
05:08 PM Tom_L: grey is too industrial
05:08 PM rue_shop3: beige or grey, or gray... oooh.. hmmmmmmm
05:08 PM rue_shop3: silver...
05:09 PM rue_shop3: oh oh oh translucent!
05:09 PM Tom_L: babypoo brown is too "80's" pc color
05:09 PM rue_shop3: wood...
05:09 PM rue_shop3: go all 70's on it
05:09 PM Tom_L: will surely burn to the ground on the first short
05:10 PM rue_shop3: no, you just use that wood sticker
05:11 PM rue_shop3: https://www.aliexpress.com/item/5M-10M-Waterproof-PVC-Vinyl-Wood-Grain-Self-Adhesive-Wallpaper-Kitchen-Wardrobe-Cabinet-Furniture-Renovation-Door/32876450346.html
05:11 PM Tom_L: you don't gotta go to china for that
05:11 PM rue_shop3: I'd like it to be able to fly, and have a follow mode
05:11 PM Tom_L: go to walmart and get woodgrain shelf paper
05:12 PM rue_shop3: or chrome sticker
05:12 PM Tom_L: mylar window tint silver
05:12 PM rue_shop3: ooo translucent layered colour
05:13 PM rue_shop3: its just really important that it be small and fit on the bench without taking up a lot of room
05:13 PM Tom_L: make the knob readout from polarized plastic so it gets darker when "more" is applied
05:44 PM robotustra: with such set of functions it should glow in the dark like this https://www.ebay.com/itm/LEAD-BULLET-JIG-HEAD-FISHING-LURE-POWDER-PAINT-NEON-GLOW-in-dark-Vein-/
05:51 PM rue_shop3: DAMNIT YOUR RIGHT
05:53 PM rue_shop3: hmm
05:53 PM rue_shop3: It'd be nice to put a 5V ouptut on my +- 12V supply
05:54 PM rue_shop3: and make the 12V adjustable
05:54 PM rue_shop3: and when do I ever need a negitive voltage without a matching positive voltage
05:54 PM rue_shop3: so the negitive voltage might as well track the + one
05:55 PM rue_shop3: I have a bunch of cicruit baords to strip down, and every time I look at them, I want ALL the parts, so its better to just keep the baord
05:56 PM rue_shop3: for a while, parts from china were cheap enough to not worry about it, but now almost everything is 50c ea (little things) and it adds up too fast
06:34 PM rue_shop4: SWEET, my TDA2050 based constant current motor driver circuit works
06:34 PM rue_shop4: I think I cooked the first tda2050, it was leaking like all hell and it caused it to ring
06:42 PM rue_shop3: ok, so now I just need to make a force feedback controller based on it
06:43 PM rue_shop3: being its already serial, this should be easy
06:43 PM rue_shop3: oh and make a second one...
06:43 PM rue_shop3: right
06:45 PM robotustra: I have to draw a contour and generate g-code
06:46 PM rue_shop3: I suggest librecad and ... something
06:47 PM robotustra: I already have a toolchain
07:24 PM robotustra: generated
07:25 PM robotustra: mill tomorrow
08:02 PM rue_shop3: what are you using for the gcode?
08:03 PM robotustra: i use artcam to generate g-code
08:03 PM robotustra: but I hope one day I'll write my own generator
08:03 PM robotustra: I'm still too lazy for it
08:04 PM Tom_L: when there are so many out there.... why?
08:09 PM Tom_L: https://www.freecadweb.org/wiki/Path_Workbench
08:09 PM Tom_L: is actively being developed
08:09 PM rue_: artcam
08:09 PM rue_: I'm working on writing one too
08:10 PM rue_: what you gonna start with?
08:10 PM rue_: I have dxf reading workin
08:10 PM Tom_L: why not help them instead?
08:10 PM rue_: I want to start with soemthing that turns points into drill cycles
08:10 PM rue_: Tom_L, tooo much learning curve
08:10 PM Tom_L: and yours isn't?
08:10 PM rue_: and I'm just gonna bet their using QT
08:11 PM rue_: which means that every time a new QT comes out, they have to rewrtite it, and it never gets finished
08:11 PM Tom_L: dunno what qt is but i think they use python
08:11 PM Tom_L: one of the developers is in linuxcnc
08:11 PM Tom_L: german
08:12 PM Tom_L: i haven't tried it because i have one but they've been talking about it for a while now
08:12 PM Tom_L: made great strides as of late
08:13 PM rue_: I can check it out, but like I say, it'd usually take longer for me to get with other peoples code than to do my own from scratch
08:15 PM Tom_L: programming language: Python, C++
08:15 PM Tom_L: what is QT?
08:15 PM rue_: QT is a graphics library that goes obsolete every 2 years and you have to completely rewrite your code
08:15 PM Tom_L: i'll ask him next time he's on
08:17 PM rue_: if their using python, its not their problem
08:18 PM Tom_L: they do use QT
08:18 PM Tom_L: FreeCAD is based on OpenCasCade, a powerful geometry kernel, features an Open Inventor-compliant 3D scene representation model provided by the Coin 3D library, and a broad Python API. The interface is built with Qt.
08:18 PM rue_: ah, and at a glance they require STL input
08:18 PM rue_: its not 2.5d, its 3d
08:18 PM Tom_L: most things in this world are 3d
08:19 PM rue_: nope
08:19 PM rue_: nt going to work for me
08:19 PM rue_: too slow, I can do 2.5D projects more than 10x faster than 3d
08:19 PM Tom_L: sheetcam is another one alot of them use
08:19 PM Tom_L: it's 2.5d i believe
08:20 PM rue_: I erspect that everyone else in the world is using 3d for this stuff, I'v seen how long it takes them and how clumbsy it is
08:20 PM rue_: they require 3d input from programs like openscad
08:20 PM rue_: aka, stl file
08:20 PM rue_: which are triangulated anyhow
08:20 PM rue_: so no true curves
08:21 PM rue_: most people dont know how to code openscadproperly and eveyrthing has polygons everywhere
08:21 PM rue_: er, sorry, freecad, which is worse than openscad, couldn't get that program off the ground
08:21 PM Tom_L: i plan to keep using what i use but keep my eyes open for free solutions for the rest
08:21 PM rue_: my problem is something that runs on linux
08:22 PM rue_: the only one that will realllly sucks
08:22 PM rue_: even the linux vesion of the windows one I'm using is hopeless
08:22 PM rue_: :) apparently it rests on me to fix
08:22 PM Tom_L: some things windows just does better
08:23 PM rue_: robotustra, I want to know more about what your goal is, cause Iv made a start on mine
08:23 PM Tom_L: that's the community that uses the stuff
08:23 PM rue_: Tom_L, its just that the peopel who are doing it either have money to pay for the good programs that run on linux, or they use windows
08:23 PM rue_: yea
08:24 PM rue_: well, I cleaned out the gutters
08:24 PM Tom_L: free stuff seems to go so far then quits
08:24 PM rue_: yea, short timeframe of people driving the project
08:24 PM rue_: in a commercial env. the company drives the project
08:24 PM rue_: in open source, its a guy
08:24 PM Tom_L: then another comes along and repeats
08:24 PM rue_: yes
08:24 PM Tom_L: endless cycle
08:25 PM rue_: unfortunatly, yes
08:25 PM Tom_L: and you fall into that category
08:25 PM rue_: and thigns like QT cause good programs to die
08:25 PM rue_: yes, hance my interest in robotustra
08:25 PM Tom_L: that was why i suggested you help them instead
08:25 PM rue_: robotustra, WOULD YOU REPLY ALREADY!?
08:25 PM rue_: no
08:25 PM Tom_L: i don't know how to code or i probably would
08:25 PM rue_: they are doing 3d, they dont want ot do 2d
08:25 PM rue_: I want 2.5d, not 3c
08:26 PM Tom_L: i understand
08:26 PM rue_: I'm going to start with a program that takes points from a dxf and builds files to drill them
08:26 PM Tom_L: i can do both with mine which is probably why i keep using it
08:26 PM rue_: then lines and circles
08:26 PM rue_: which are harder, cause youhave to offset the bit
08:26 PM Tom_L: did you look at jt's dxf one?
08:26 PM rue_: after I have lines and circcles, I'll work on pockets
08:27 PM rue_: yea, it wasn't a workable program for me
08:27 PM Tom_L: he also started one
08:28 PM Tom_L: after helping my kid i could probably hand code a 2d one but it would be a slow process
08:30 PM rue_shop3: the bit offsets are the complex part, but there is a library, and it turns out that its part of a thing thats been translated into about every language on the planet, and its really well written, ANd the alg is described really well if sometone wanted to code it themselfs
08:30 PM rue_shop3: well, the code is OK, aka, I could, but probably wouldn't rewrite it
08:30 PM Tom_L: for the tool offset vs part geometry?
08:30 PM rue_shop3: yes
08:31 PM rue_shop3: just working out what side of an object is the inside
08:31 PM rue_shop3: BUT turns out that all programs that exist require you to make the shape into a polyline
08:31 PM rue_shop3: which probably helps
08:31 PM rue_shop3: then your not trying to match up endpoints
08:31 PM Tom_L: not necessarily
08:31 PM Tom_L: mine will output lines and arcs when possible
08:32 PM Tom_L: if it converts an imported one it turns them into poly lines yes
08:32 PM rue_shop3: no, I mean that the profile, is a linked set of arcs/lines
08:33 PM rue_shop3: the old machine I made breaks circles/arcs into line segments based on the radius, so they dont show
08:33 PM Tom_L: short lines
08:33 PM Tom_L: large code file
08:33 PM Tom_L: but yes
08:33 PM rue_shop3: which is a point, the old cnc software is kinda part of what I'm building
08:34 PM rue_shop3: what does it matter if a gocde file is 500M, if your not hand editing it
08:34 PM rue_shop3: :)
08:34 PM rue_shop3: and they say I'm old school...
08:34 PM Tom_L: but what if you need to?
08:35 PM Tom_L: it never mattered to us
08:35 PM Tom_L: we would re'post the code if a change was needed
08:37 PM Tom_L: as many small mills that are out there you would think somebody would have a decent cad cam by now
08:41 PM rue_shop3: damnit, I had the DAC I needed in my hand...
08:41 PM rue_shop3: yea, what are the shapeoko people using?
08:41 PM Tom_L: no clue
08:42 PM rue_shop3: ok, I'm in a lmood to do things and I'm being overwhelmed by the lists
08:44 PM Tom_L: stop making more lists
08:44 PM robotustra: path workbench - is it for windows&
08:44 PM robotustra: ?
08:45 PM rue_shop3: runs on linux?
08:45 PM rue_shop3: freecad again
08:45 PM rue_shop3: arg
08:46 PM robotustra: freecad is ugly gui prod
08:47 PM robotustra: I made my own FORTH-like interpreter
08:47 PM robotustra: and I want to build in CAD
08:47 PM robotustra: to be able to write contours and solids on it
08:48 PM robotustra: after that I will build in a path generator for contours and solids
08:48 PM robotustra: no gui
08:49 PM robotustra: to view solids or pathes there are many other tools already
08:50 PM robotustra: I already did some vectors and pathes in interpreter, but I didn't make any g-code generators for them
08:51 PM robotustra: don't have much time for that, but after I'll finish my lathe I'll continue to work on this interpreter, because I want to build it this interpreter in the lathe
08:52 PM robotustra: instead of g-code use my own forth-like language to program lathe movements
08:53 PM robotustra: that's the plan for the nearest 1-2 years
08:53 PM rue_shop4: so, liek openscad but more 2d based
08:54 PM robotustra: openscad have unconvinient set of operations
08:54 PM robotustra: but I want 3d cad
08:54 PM robotustra: because I'm planning to use the same controller for mill too
08:54 PM rue_shop4: robotustra, I agree
08:54 PM rue_shop4: ok, so how would your input to it look
08:55 PM rue_shop4: say for a circle @ 0,0 radius 20mm
08:55 PM robotustra: no
08:55 PM rue_shop4: ?
08:55 PM robotustra: first you create a dot
08:55 PM rue_shop4: ok
08:56 PM robotustra: then you create 2 vectors
08:56 PM rue_shop4: is the dot the middle?
08:56 PM robotustra: yeah
08:56 PM rue_shop4: what is the meansing of the 2 vectors?
08:56 PM robotustra: for instance center
08:56 PM rue_shop4: Rx and Ry?
08:56 PM robotustra: no
08:57 PM robotustra: let say: 1.0 0.0 0.0 c0 DOT
08:57 PM robotustra: 0. 0. 0. n VEC
08:57 PM robotustra: 0. 0. 1. n VEC
08:57 PM robotustra: 1. 0. 0. r VEC
08:57 PM rue_shop4: OMG, its an 8 bit ADC! (from an old vcr)
08:57 PM rue_shop4: robotustra, ooh, you mean a dot matrix
08:57 PM robotustra: c0 n r circ0 CIRC
08:58 PM rue_shop4: and your specifying the normal of the circle
08:58 PM robotustra: yes
08:58 PM rue_shop4: ouch
08:58 PM rue_shop4: tho, it would make operating a 7 axis machine easier
08:58 PM robotustra: probably
08:59 PM rue_shop4: omg, its a dual slope adc...
08:59 PM robotustra: but I have normal to contours because I have to know where the interior and where is the outside
08:59 PM rue_shop4: ok, well, I know its lesser, but I'm just working with the 3 axies, on flat stuff
09:00 PM robotustra: in my cad I will build solids from contours
09:00 PM robotustra: by pushing it along some vector
09:00 PM robotustra: and I want to champfer a rib with 1 command
09:00 PM robotustra: for instance
09:01 PM robotustra: not like in openscad
09:01 PM robotustra: in openscad it's a pain in the ass
09:03 PM rue_shop4: yea, I'm not gonna say your wrong, I'm gonna say your goal is WAY OVER my project goal
09:04 PM robotustra: my final goal is full 3d text cad
09:04 PM robotustra: + g-code generator
09:05 PM rue_shop4: not like the uln2003 is silly enough, the BA614 is a *6* channel darlington
09:05 PM Tom_L: i can see how openscad could suck the big one for anything other than 3d printing
09:05 PM rue_shop4: yes, I cant help you with what your after :(
09:05 PM rue_shop4: Tom_L, well, openscad should have used povray syntax, and they didn't and its badly limited in what it can do
09:05 PM rue_shop4: and it does what it can do badly
09:06 PM rue_shop4: lots of times it gets CSG operations wrong
09:06 PM rue_shop4: after taking a half hour thinking about it
09:06 PM Tom_L: it doesn't always import good i know that much
09:06 PM robotustra: but I'll start from 2d pathes and generating simple pathes
09:06 PM rue_shop4: if your dxf has misjoined or overlapping lines, it completely screws up
09:07 PM Tom_L: that happens alot in the real world
09:07 PM robotustra: I'll not use any external formats
09:07 PM rue_shop4: robotustra, the fun part is trying to work out which is the inside and outside of an object for tool offsets
09:07 PM Tom_L: you would think it wouldn't but it does
09:08 PM robotustra: as I told - use normals to contour
09:08 PM Tom_L: ironically catia imports better to my program than solidworks
09:08 PM robotustra: caria and solidworks it's windows/.net bullshit
09:08 PM robotustra: hate it
09:09 PM Tom_L: i love it
09:09 PM Tom_L: does a great job quickly
09:09 PM robotustra: I want it done even quicker with my text cad
09:10 PM robotustra: which is 100k and run from consol on any os
09:10 PM robotustra: and I can bult in it in a controller
09:11 PM Tom_L: i've used conversational controls before
09:11 PM Tom_L: handy on a lathe, not so handy on a mill
09:11 PM robotustra: I know wnat are you talking about, but it will not be conversational control
09:12 PM robotustra: it will be test input and interpretation
09:12 PM robotustra: no gui
09:12 PM Tom_L: you would be quicker to hand write the gcode and run it from the console in that case
09:13 PM robotustra: no
09:14 PM robotustra: the objects with wich you operate in g--code are: feed, point, line, coordinate
09:14 PM robotustra: I would like to operate in plains
09:14 PM robotustra: pathes,
09:14 PM robotustra: threads
09:14 PM Tom_L: it will be interesting to see
09:15 PM robotustra: let say I want a zero cutter
09:15 PM robotustra: just say: n1 CUTTER ZERO
09:16 PM robotustra: it does probing and set catter to the position,
09:16 PM robotustra: the shell will remember the geometry of the lathe
09:16 PM robotustra: and geometry of the part to mave safely
09:17 PM robotustra: then I say: 10 h eq 20 r eq cylinder cut
09:18 PM robotustra: and it wil cut the cylinder of 10 mm height and 40 mm diameter on the position 0
09:18 PM robotustra: and I should not care abouthow it calculates all the pathes and cutters
09:19 PM robotustra: that's the idea, the higher level of control
09:19 PM robotustra: higher than g-code
09:20 PM robotustra: machine should remember the tool number, the material and all safe distances
09:20 PM robotustra: calculate RPM, feed and so on
09:21 PM robotustra: to make a thread type: 20 l eq M10 THREAD
09:22 PM rue_shop4: hwo would you specify the origional material shape?
09:22 PM robotustra: how 3d printer determine Z=0?
09:23 PM mrdata: limit switch?
09:23 PM robotustra: probes
09:23 PM robotustra: along 2 axii
09:24 PM robotustra: some 3d printers have probes to determine Z=0
09:24 PM robotustra: I'll use 2 or more
09:24 PM robotustra: we will see
09:24 PM rue_shop4: ah, do you cant tell it that its rough material is a 25mm bolt with a 50mm head
09:25 PM robotustra: if I'll make an indexer I'll be able to do it too
09:26 PM robotustra: actually I was thinking to make a scan of initial material I put in the chuck
09:26 PM robotustra: and calculate limits from it
09:27 PM robotustra: I think I can do it even without indexer if I'll rotate material slowly and approaching the probe
09:28 PM robotustra: all I need to know is a rotation body shape
09:30 PM robotustra: https://imgur.com/73STFfW
09:31 PM robotustra: do you see an additional idle axis above the motor?
09:32 PM robotustra: I'm planning to put an stepper motor to be able to index the chuck
09:32 PM Tom_L: what for?
09:32 PM Tom_L: that's not just a reduction shaft?
09:32 PM robotustra: for now it's an idler
09:32 PM robotustra: yes
09:32 PM robotustra: for now
09:32 PM Tom_L: stepper or servo?
09:33 PM Tom_L: what top rpm are you looking for at the spindle?
09:33 PM robotustra: I think I'll not run it faster than 3000 rpm
09:33 PM robotustra: my spindle gives 24000
09:33 PM Tom_L: are you going to program for constant surface speed?
09:33 PM robotustra: I can
09:34 PM robotustra: but it's a future
09:34 PM Tom_L: with over rev limits at the center
09:34 PM robotustra: when I'll come to programming controller
09:36 PM Tom_L: you should guard the motor from chips or turn it around
09:36 PM robotustra: sure
09:36 PM robotustra: and belts
09:36 PM robotustra: I'll make a cover for it
09:37 PM robotustra: and I also planning to cover rails
09:37 PM robotustra: not sire how yet
09:37 PM robotustra: sure
09:39 PM robotustra: I have a spindle 0-24000 and 8 times reduction
09:40 PM robotustra: so the max rpm is 3000
09:40 PM robotustra: if I drive directly from motor to spindle the reduction will be 4 times only
09:41 PM robotustra: it this mode max rpm = 6000
09:41 PM Tom_L: i put neoprene over my rails and i like it
09:41 PM Tom_L: it slides with the axis
09:41 PM robotustra: but I'll not use it because I'm not sure I'll do good balance :)
09:41 PM robotustra: I got neoprene too
09:42 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/Final/Vise_parts/table_slot1.jpg
09:42 PM Tom_L: over the front and rear you can see there
09:44 PM rue_shop3: heh interesting
09:44 PM rue_shop3: I went to buy soemthing, 1.22 ea I got 5 and the total was only 6.00
09:44 PM rue_shop3: turns out, there is a bulk discount
09:44 PM rue_shop3: 1.20ea
09:45 PM robotustra: good vise
09:46 PM robotustra: I'm thinking to do something like this https://www.google.ca/search?q=cnc+rail+protection&tbm=isch&source=iu&ictx=1&fir=w_3sMjizcO1mkM%253A%252CTLOEZ98LduJgPM%252C_&usg=__WWwnFBqyHF1-2frmB6fFkyBnRa0%3D&sa=X&ved=0ahUKEwi0opqOs__bAhVj8IMKHbM8DlEQ9QEILTAB#imgrc=_
09:47 PM robotustra: I have only 12 inches of travel for Z axis
09:47 PM robotustra: and 10 cm X travel
09:47 PM robotustra: but X axis fill be hidden under the table
09:48 PM rue_shop3: I might have started the cnc, but there is really nowhere to put it right now
09:48 PM rue_shop3: which is the tip of an iceberg
09:48 PM rue_shop3: *an iceberg* there are a few floating around in here
09:49 PM robotustra: make a bbq of your old useless stuff
09:49 PM rue_shop4: ok I used the last of something, and finished ordering a stupidly high quantity to replace it
09:49 PM rue_shop4: nothing is useless, its all stock for building whatever I want whenever I want
09:49 PM rue_shop4: so no idea goes unforgottten
09:50 PM robotustra: incremental building - it's what I use too
09:51 PM rue_shop4: I been building a lot of modules for a while now
09:51 PM rue_shop4: I'm waiting for the landslide when large things just come togethor
09:51 PM Tom_L: rue_shop4, last i recall you drug some C beam inside, what did that become?
09:52 PM robotustra: rue_shop4, who feed you?
09:52 PM robotustra: rue_shop4, who feeds you?
09:53 PM Tom_L: he eats the burnt stuff of the bottom of pans when he forgets about them
09:53 PM robotustra: I mean who gives him money to live and do hobby stuff?
09:53 PM Tom_L: he's an electrician
09:54 PM Tom_L: 'sparkie'
09:54 PM robotustra: what is sparkie?
09:55 PM Tom_L: a nickname for an electrician
09:55 PM robotustra: I also "registered" as electrician, but do some other stuff
09:56 PM robotustra: hm, now I'll think about rail protection all the night
09:56 PM Tom_L: you're in ru right?
09:57 PM Tom_L: the thicker neoprene works best because it doesn't bunch up
09:57 PM Tom_L: 1/8"
09:57 PM robotustra: I'm in montreal
09:57 PM Tom_L: ahh
09:57 PM Tom_L: i'm thinking of someone else i think
09:57 PM Tom_L: the 1/16" i used behind the X axis and Z axis
09:57 PM robotustra: but I speak russian yes
09:57 PM Tom_L: it works good there
09:58 PM Tom_L: it was free
09:58 PM robotustra: where did you get your neoprene?
09:58 PM Tom_L: a company here makes elevator belts for moving grain etc
09:58 PM Tom_L: it was scrap they had
09:59 PM Tom_L: the guy is real nice
09:59 PM Tom_L: i was gonna pay and he just said go
09:59 PM robotustra: good to have good sources
09:59 PM Tom_L: so i've got enough to make several repairs if needed
10:00 PM robotustra: I think I need to use thiner material
10:00 PM Tom_L: it will bunch up i think
10:00 PM robotustra: may be some plastics
10:00 PM Tom_L: you will see
10:00 PM Tom_L: i was gonna find some acordion and use it
10:01 PM Tom_L: mine just kinda came together with bits i could get cheap
10:02 PM Tom_L: except the rails etc
10:04 PM robotustra: my protection shoulf shrink form 35 cm to 5
10:05 PM rue_shop4: I need a machine that strips the end of jumper wires for me
10:06 PM Tom_L: use enameled wire and paint strip the ends bare
10:07 PM Tom_L: or dip the ends of plastic coated in a vat of molten aluminum
10:07 PM rue_shop4: I'd like a poke-it-in-comes-out-stripped thin
10:07 PM rue_shop4: g
10:08 PM Tom_L: dip the ends of plastic coated in a vat of molten aluminum
10:08 PM Tom_L: _if_ it comes out, it should be stripped :)
10:10 PM rue_shop4: hmm, the power dissipation on the tda2050 sucks
10:10 PM rue_shop4: 25w
10:10 PM Tom_L: https://www.youtube.com/watch?v=eXeVbNpI-dU
10:10 PM rue_shop4: so, I ant build a 3A 25V supply with it
10:11 PM rue_shop4: I bought somethign like that from china
10:11 PM rue_shop4: to see how I could make one
10:11 PM Tom_L: good ones work, cheap ones suck
10:12 PM rue_shop4: yea it broke after the first 5 times I used it
10:12 PM rue_shop4: but the idea is what I wanted
10:13 PM Tom_L: Irwin model 2078300
10:13 PM Tom_L: $12.08 on amazon
10:13 PM rue_shop4: still, I want an electric one, just stick the end in, and it strips it
10:14 PM Tom_L: so mount it to a stepper with a photo interrupter
10:24 PM rue_shop3: ok, 4kg of pull will do a normal wire
10:26 PM robotustra: take a lee lead pot and put wires into the molten lead
10:28 PM robotustra: make a mini-robot-wire-stripper
10:29 PM Tom_L: https://cults3d.com/en/3d-model/art/text-flip-idea
10:30 PM robotustra: like an automatic pencil sharpener
10:31 PM robotustra: Tom_L, what do you use your mill for?
10:31 PM robotustra: did a lot of stuff?
10:31 PM Tom_L: not alot but some
10:32 PM robotustra: what is the precision?
10:32 PM Tom_L: i haven't measured it really
10:32 PM robotustra: geometry and sizes?
10:32 PM Tom_L: but the parts come out to what i programmed them
10:32 PM robotustra: at least to estimate
10:32 PM robotustra: do you use linux cnc?
10:32 PM Tom_L: yes
10:33 PM robotustra: and what cad do you use?
10:33 PM Tom_L: and since i switched to ballscrews, i haven't calibrated any backlash comp yet but the parts come out to print so it may not need any
10:33 PM robotustra: I mean how do you generate g-codes?
10:33 PM Tom_L: i use the old old cad cam i bought years ago ... Smartcam
10:33 PM Tom_L: full 3d
10:33 PM Tom_L: with lathe
10:34 PM Tom_L: but it paid for itself in 1 year
10:34 PM Tom_L: and now it's free to me
10:34 PM Tom_L: and i've customized the post for linuxcnc even for rigid tapping
10:34 PM robotustra: can you give me a link?
10:35 PM robotustra: how do you generate g-codes?
10:35 PM Tom_L: http://www.smartcamcnc.com/
10:35 PM Tom_L: that's it's current version
10:36 PM Tom_L: i have a dos version of it as well as windows if that tells you it's age
10:36 PM robotustra: oh, useless for me, I don't use windows at home
10:37 PM robotustra: I also use t-flex of old old version
10:37 PM robotustra: and I think one of the version had cnc stuff to generate
10:37 PM robotustra: g-codes
10:37 PM robotustra: but I think the code has some issues
10:38 PM robotustra: I mean it generated some code which could have collisions
10:38 PM Tom_L: i've fine tuned mine to where i don't need to edit the output
10:40 PM Tom_L: it's not as good as alot of other products out there but suits me quite well
10:40 PM Tom_L: gnite
10:44 PM rue_shop3: night
10:51 PM rue_shop3: I need a way to run speaker wire nicely in the shop
10:51 PM rue_shop3: and I need to work out a location for a secondary amp
10:52 PM rue_shop3: whats like cable tray, but cheap and consumer ?
11:22 PM rue_shop3: I need to check how much is left on the brushed motor of my new cnc there
11:22 PM rue_shop3: iirc it was at about 75% last time
11:22 PM rue_shop3: prolly has another 600 hours on it since
11:33 PM z64555: "whats like a cable tray, but cheap and consumer" a ladder, lol
11:34 PM z64555: you'll probably have to build one yourself
11:34 PM z64555: Speaker wire is small enough that you can staple it to stuff
11:35 PM z64555: I recently saw a trick with zip ties to seperate wires in a flat bundle
11:36 PM z64555: you put the wires in the budle first, and put a zip tie around them, but don't tighten
11:36 PM z64555: then between each pair of wires, you put a zip tie between them, and around the main zip tie
11:37 PM z64555: the seperator ties are thus parallel to the wires
11:37 PM z64555: once you got all the seperators in place, you can start to tighten everything
11:46 PM rue_shop3: smaller
11:47 PM rue_shop3: I mean, smaller than a ladder, the thing is, that there would probably be more cable comming
11:47 PM rue_shop3: once it starts its just a landslide
11:58 PM z64555: just string it up to the ceiling until you get enough cables to justify a rack
11:59 PM z64555: my dad likes to use eye hooks