#linuxcnc Logs

Jun 30 2018

#linuxcnc Calendar

12:08 AM Wolf__: yeah, I’ll probably end up going that route for the control side seeing its already proven and has documentation on the forum
12:24 AM RyanS: I'm hoping I can work it out. a bit worried I'll fry something with interference from the plasma
12:25 AM Wolf_ITX: best bet if you have questions about the setup is to ask jt I think
12:26 AM RyanS: yeah i'm going to use his setup and post processor
12:29 AM Wolf_ITX: I wanted to make a simple setup using something like a smoothie board but the THC is a hangup
12:29 AM Wolf_ITX: becomes not so simple lol
12:35 AM Wolf_ITX: you doing a regular gantry table?
12:38 AM RyanS: yeah 1200x1200mm ( 4'x4'), water table, rack and pinion. not decided on the linear rails yet
12:44 AM Wolf_ITX: sounds good, I'm thinking about trying a arm and carriage setup, maybe 6'x4'
12:45 AM RyanS: cool
12:45 AM Wolf_ITX: I would do a 6x12' table but I dont want to give up a whole garage bay lol
01:00 AM gloops: i wish id built vertical now, though not an option for plasma i wouldnt think
01:04 AM RyanS: A NON-Newtonian water table that defies gravity
01:04 AM gloops: could have a waterfall
01:05 AM Wolf__: loading a vertical plasma table with odd shaped stock might be a pain
01:06 AM gloops: some pros and cons
01:09 AM gloops: https://www.youtube.com/watch?v=vRCiOow5zRc
01:09 AM gloops: look at the lovely space
01:11 AM gloops: i think you could get some kind of water flow running down the back panel, a rail with drips/jets at the top, keep it damped down
01:14 AM RyanS: apparently those are lemons
01:17 AM gloops: vertical tables?
01:18 AM RyanS: burntables brand
01:19 AM gloops: ahh, no idea
01:19 AM gloops: id have the gantry running the other way i think
01:31 AM IchGucksLive: morning from germany
01:32 AM IchGucksLive: Wolf_ITX, still on
01:32 AM IchGucksLive: Wolf__, still on
01:33 AM Wolf__: yeah
01:33 AM IchGucksLive: thc is quite easy
01:33 AM IchGucksLive: if yoiu got up down signals
01:33 AM IchGucksLive: Wolf__, there is a component that does it for you
01:34 AM Wolf__: yeah, just feed the thc signals in to the mesa board, right lol
01:34 AM IchGucksLive: Wolf__, depending on thc you also can have a torch on pin
01:35 AM IchGucksLive: whatever board you have
01:35 AM IchGucksLive: loadrt thcud
01:35 AM IchGucksLive: addf thcud servo-thread
01:36 AM IchGucksLive: net TorchUp thcud.torch-up <= hm2_5i25.0.7i76.0.0.input-09
01:36 AM IchGucksLive: net TorchDown thcud.torch-down <= hm2_5i25.0.7i76.0.0.input-10
01:36 AM IchGucksLive: net ArcOk thcud.arc-ok <= hm2_5i25.0.7i76.0.0.input-08
01:37 AM IchGucksLive: and then it is up to lcnc vercion
01:37 AM IchGucksLive: the thc copmponent changes from time to time
01:37 AM IchGucksLive: net CurVel thcud.current-vel <= motion.current-vel
01:37 AM IchGucksLive: setp thcud.requested-vel 15.0
01:37 AM IchGucksLive: setp thcud.vel-tol 8.0
01:37 AM IchGucksLive: setp thcud.correction-vel 0.001
01:37 AM Wolf__: yeah, if you are using something like the thcad and linuxcnc or mach3, everything else I have looked at like gbrl/smoothie + stand alone thc looks like a mess
01:43 AM IchGucksLive: still on i got wlan problems as so many are here today starting at 6 am at lakeside
01:43 AM IchGucksLive: eatch party all day long
01:43 AM IchGucksLive: im off have a nice bitbreak free day wherever you are in the world
02:10 AM Deejay: moin
03:17 AM gonzo_: morning
03:18 AM gonzo_: will just repost a question from last night, in case fresh people can enlighten me....
03:18 AM gonzo_: <gonzo_> any cambam experts in here this eve? (well, more expert than me, which is not difficult)
03:18 AM gonzo_: <gonzo_> trying to get it to mill a sloping surface (sloping in Z axis), in an easy way
03:19 AM gonzo_: I would like to avoid the whole 3d surface thing at the mo. As I'm new to cad/cam, let along this package
03:20 AM gonzo_: alone
03:39 AM gloops: nope never used it
03:40 AM gloops: IchsGuckslive will know it
03:41 AM gloops: any drawing of the part gonzo?
03:44 AM XXCoder: my experence with cambam is that usually bam, it crashes :(
03:46 AM gloops: probably going to be looking at a 3D contour toolpath for a slope i think
03:47 AM gloops: unless you can incline a pocket or something
03:49 AM gloops: gonzo you may as well bite the bullet, you need to know this app inside out, go through all the youtube tutorials until you can do everything
04:01 AM gonzo_: no drawings, just knocking up a test part for an exercise
04:01 AM gonzo_: I need to mill off a surface, part flat, part sloping down.
04:02 AM gonzo_: I have a pocket with a sloped side whick looks like it may work, but I'm doing a hell of a lot of air milling that way
04:03 AM gonzo_: you don't seem to be able to slope a whole pocket though
04:04 AM gloops: can you do a 2 rail sweep?
04:06 AM gloops: http://www.cambam.info/doc/plus/images/tour_stock2.png
04:07 AM gloops: there does look to be a sweep/loft option, like freecad
04:09 AM gloops: thats a spindle profile though i think
04:10 AM gloops: extrude would be one way maybe http://www.cambam.info/doc/plus/cad/DrawSurface.htm
04:10 AM gloops: draw 2d cross section, extrude, rotate
04:42 AM gloops: hmm, what to try today
04:42 AM gonzo_: gloops, I was looking to see if I could do an extrude, then rotate it
04:43 AM gloops: problem is my mind isnt geared to wards small things, signs and bits and bobs
04:43 AM gloops: i should working on cathedrals
04:44 AM gloops: gonzo there should be some option to drive a vector along a drive rail or between 2 rails
04:45 AM gloops: dont know which would be the best option for your part, but these tools are common to most CAD apps
04:55 AM RyanS: why doesn't nema 24 seem to be a popular size?
04:55 AM XXCoder: nema23
04:55 AM RyanS: no 24
04:56 AM RyanS: 60x60mm
04:57 AM XXCoder: im not correcting you
04:57 AM XXCoder: nema23 is the reason nema24 isnt popular
04:58 AM RyanS: too close to the next size?
04:58 AM XXCoder: I guess at some point in past 23 or 24 were made, and 23 someone wanted lots of em, so they made lots of em, and hence cheaper
04:58 AM XXCoder: size is close so everyone gets 23
04:59 AM XXCoder: maybe im wrong on how it started but yeah 23 and 24 is quite close
05:18 AM gloops: not sure if Tom_L uses nema 24, hes got the strongest of that 23/24 motor anyway
05:20 AM gloops: i noticed when i was marking stuff out for the motors and such - the metric dimensions all seem to fall on a distinct imperial measurement, so maybe thats where the sizes came from
05:20 AM gloops: as the chinese ones are all copied from american anyway
05:21 AM RyanS: there's a nema 24 that is 4nM, close to a small 34 but higher RPM
05:32 AM gloops: well, the nema 34a i bought opened my eyes
05:32 AM gloops: there is no comparison to the chinese nema 23 motors
05:34 AM XXCoder: I bet yeah
05:34 AM XXCoder: my machine can only use 23s without adoptions anyway
05:36 AM RyanS: well 43s have a lot more torque
05:36 AM RyanS: 34
05:38 AM Wolf__: gloops: “The National Electrical Manufacturers Association (NEMA) defines standards used in North America for various grades of electrical enclosures typically used in industrial applications”
05:38 AM Wolf__: might explain the imperial sizes
05:40 AM gloops: Wold i just noticed when using ruler with metric on one side and imperial on the other - it always fell on a regular imperial size
05:40 AM gloops: like 2 1/4
05:41 AM gloops: why would anyone using metric pick 23 anyway, why not 25
05:55 AM Wolf__: just 34 all the things
05:56 AM jthornton: morning
06:01 AM Wolf__: morning
06:05 AM jthornton: wow it's already 76°F
06:06 AM XXCoder: its 84f here. no sun yet
06:06 AM jthornton: wow that's hot for a night time low
06:07 AM XXCoder: oh well lol
06:07 AM XXCoder: welcome to summer
06:13 AM IchGucksLive: hi all
06:13 AM IchGucksLive: RyanS, you are pulling a torque non BIT
06:14 AM IchGucksLive: i got best expirience with 2Nm
06:14 AM IchGucksLive: RyanS, you need speed as your request
06:15 AM IchGucksLive: gonzo_, try the free SHEETCAM version
06:15 AM IchGucksLive: XXCoder, the nema 24 have 30% more torque with same Mounting pattern only 60 insted of 57
06:16 AM IchGucksLive: XXCoder, nema 24 can go 4Nm at 3A
06:16 AM IchGucksLive: XXCoder, gift is one psu 3 hard working steppers
06:17 AM IchGucksLive: om off till later
06:17 AM IchGucksLive: around 3000 swimmsuit ladys here
06:17 AM IchGucksLive: lakeside even no water in view so many peole here
06:18 AM IchGucksLive: why dident they go to Holiday
06:55 AM jthornton: https://forum.linuxcnc.org/32-documents/34802-linuxcnc-is-poorly-documented
06:55 AM jthornton: dunno if I should reply or not
07:34 AM fragalot: hey
07:34 AM gloops: afternoon
07:58 AM Guest63643: hi
07:59 AM diverdude: Hi, I have for some reason begun to get this error when I am trying to issue mdi commands: "Must be in MDI mode to issue MDI command". What is causing this error? How do i get into MDI mode?
08:01 AM nick001: push F3
08:02 AM diverdude: ah yeah found it :)
08:03 AM diverdude: c.mode(linuxcnc.MODE_MDI)
08:06 AM JT-Shop: dang people
08:08 AM nick001: s'matter
08:08 AM JT-Shop: I keep getting requests for costs of shipping when they can do it in the cart'
08:10 AM nick001: post it on the cart page-lead en to the water
08:11 AM nick001: also thougt the cart had zip code box for that
08:11 AM tjb1: JT-Shop: you use sheetcam dont you?
08:13 AM jthornton: tjb1: yes
08:14 AM tjb1: Does it have a way to detect that its crossing a kerf?
08:14 AM tjb1: and insert a code before and after the kerf?
08:14 AM jthornton: not that I know of
08:15 AM tjb1: How does your THC handle crossing a kerf?
08:15 AM nick001: JT -hardinge indexing, is it possible to program in anoter set of indexes for the turretin the PLC? ie,t21,t22,t23 etc and use the same H - t21 G43 H1
08:15 AM jthornton: I don't cross a kerf
08:16 AM jthornton: nick001: for a dual turret?
08:18 AM nick001: no-2 tools on the same turret face- stock stop and move over and spot drill
08:19 AM nick001: rough and finish face on same turret position
08:19 AM jthornton: so tool T1 and T21 are the same index?
08:20 AM nick001: yes
08:20 AM jthornton: or T1 and T11
08:20 AM jthornton: I'm sure it can be done
08:21 AM jthornton: might be easier to do T1, T11 T2, T21 etc and only use the first digit for the index
08:21 AM nick001: Fisrt Hardinge I used Wallaces script and have actually used 3 tools on the same station T1 T21 T31
08:22 AM jthornton: hmm so the last digit is the index position
08:22 AM nick001: right
08:23 AM tjb1: .weather 14902
08:23 AM nick001: this way I can touch off both tools and have full offset control
08:23 AM jthornton: that should work...
08:24 AM nick001: can I doctor the PLC on the second machine to do this?
08:24 AM jthornton: a real PLC or Classicladder?
08:25 AM jthornton: hmm I smell bacon cooking
08:25 AM nick001: Classic ladder - your setup
08:25 AM diverdude: for some reason i can run this code: G54 Z0.5 but i cannot run this G54 Z-0.5. It says it will exceed the limit....but if i first run this 2 times: G54 Z0.5, it has moved 1mm - then it should be able to move 0.5mm back again yeah?
08:25 AM diverdude: ahhh its because its absolute positioning?
08:26 AM tjb1: wouldnt that depend on absolute vs incremental?
08:26 AM diverdude: tjb1: right....so i have to somehow set it to incremental instead then
08:26 AM tjb1: G91?
08:27 AM tjb1: mill yeah?
08:27 AM diverdude: right...i will try it
08:27 AM diverdude: yes
08:27 AM nick001: G91 G54 switch back to G90 when dome
08:28 AM tjb1: Maybe someone knows..how do you program a C axis move that crosses 0?
08:28 AM tjb1: For instance, currently at 300 and need to move 120, if you program that as 60 it goes backwards
08:29 AM tjb1: Maybe a poor example...I think my problem that start + move was equal to the start because of the cross
08:31 AM nick001: back later - hve to actually make some tooling
08:33 AM nallar is now known as Ross
08:34 AM diverdude: Is linuxcnc always moving in either inches or mm?
08:36 AM tjb1: G20/G21 typically determines that in Fanuc world
08:36 AM tjb1: well what the program is written in
08:36 AM diverdude: tjb1: Fanuc world?
08:37 AM tjb1: I mostly program machines with Fanuc controllers
08:37 AM diverdude: aha i see
08:38 AM diverdude: tjb1: just because in step wizard i can only choose between mm and inch
08:38 AM tjb1: did you want it to be something else?
08:38 AM diverdude: tjb1: no...i actually want it to be in mm....but I am asking out of curiosity
08:41 AM diverdude: Also, in my manual ( https://www.china-cncrouter.com//downfile/2015120417282452561.pdf) It says under specifications: "Repeat positioning Accuracy : 0.05mm". Does that mean that the smallest stepsize which this machine can move with is 0.05mm?
08:44 AM pcw_home: If you want the basic machine to be mm, you choose that in stepconf, you can still use inch or mm gcode with g20 or g21
08:46 AM pcw_home: things like jog speed and maximum velocity will stay in the basic machine units regardless of G20 or G21
08:46 AM tjb1: https://blog.robotiq.com/bid/72766/What-are-Accuracy-and-Repeatability-in-Industrial-Robots
08:47 AM SpeedEvil: diverdude: stepsize would usually be resolution
08:47 AM SpeedEvil: diverdude: repeat positioning accuracy means if you command it to a position, some other position, then return to the first, it will be 0.05mm away at most
08:48 AM SpeedEvil: - sometimes with the requirement that the move be in the same direction as the last movement to take up backlash
09:00 AM diverdude: SpeedEvil: ahh ok thats very interesting
09:01 AM diverdude: SpeedEvil: hmm manual does not say anything about resolution....is there a way to figure out what the smallest move is in each direction?
09:02 AM Tom_L: 80F
09:03 AM diverdude: Tom_L: ?
09:06 AM Tom_L: 26.6C ?
09:07 AM IchGucksLive: hi all
09:07 AM IchGucksLive: we are near melting ;-)
09:08 AM IchGucksLive: diverdude, online ?
09:08 AM diverdude: IchGucksLive: yes, hello :)
09:08 AM IchGucksLive: Repeat positioning Accuracy may be the backlash
09:09 AM diverdude: IchGucksLive: yes its REALLY warm
09:09 AM IchGucksLive: diverdude, you shoudt get some Simulation practice
09:09 AM IchGucksLive: diverdude, as you fight with coordinate system and setup of gcode
09:09 AM diverdude: IchGucksLive: im sitting on 5th floor right under the roof....Gives a nice bit of extra heat feeling :D
09:10 AM IchGucksLive: im in frech air outside and look on lots of nice swimming girls
09:10 AM diverdude: small room of 10m2 and some heat generating machinery running also dont make things more cool haha
09:11 AM diverdude: ohhh sounds like you are enjoying life more haha
09:14 AM IchGucksLive: live is there to be enjoyd
09:14 AM gloops: france 1 arg 0
09:15 AM IchGucksLive: diverdude, my channel for Gcode https://www.youtube.com/watch?v=BKUAdACMQSI
09:15 AM IchGucksLive: diverdude, lotsa more there
09:17 AM diverdude: oh nice. i will check it out. thanx
09:18 AM IchGucksLive: diverdude, what CAM system you use
09:20 AM IchGucksLive: gloops, more head to come in the UK
09:20 AM gloops: yes looks like Ichs
09:21 AM IchGucksLive: 33 here now according to the Lake temp led sign
09:22 AM gloops: maybe about 30 here
09:22 AM IchGucksLive: gloops, did the pdm guy join onesmore
09:22 AM diverdude: IchGucksLive: this one https://www.edmundoptics.com/cameras/usb-cameras/eo-2323-monochrome-usb-3.0-camera/
09:22 AM JT-Shop: it's already 28°C here at 9:22am
09:22 AM gloops: not seen him - he hasnt been on facebook since
09:23 AM gloops: maybe got it going
09:24 AM IchGucksLive: im off till later
09:29 AM miss0r: Anyone in here from sweden?
09:32 AM miss0r: I'm going there(again) this summer for some camping with the guys. But with the current heatwave'n all we are getting worried that we would not be allowed to light a campfire. Is it ever forbidden completely? or should you just take extra care?
09:34 AM CaptHindsight: aren't fires hot?
09:35 AM miss0r: last time I checked very hot. So hot, infact, that I burned myself
09:36 AM CaptHindsight: I'd want some sort of camp cooler
09:36 AM miss0r: a campfire cooler... :D
09:36 AM CaptHindsight: cools the campsite for a few m^2
09:37 AM miss0r: that'd be sweet
09:37 AM miss0r: Doesn't sound like something that would consume alot of power, at all :D
09:38 AM CaptHindsight: heat absorbing bottle
09:38 AM miss0r: :o
09:38 AM CaptHindsight: open it and it collects the heat, cap it until you're leaving, then release
10:15 AM * fragalot returns!
10:15 AM gloops: wow 2-2
10:21 AM gloops: France looking favourites 3-2
10:26 AM gloops: 4...
10:50 AM miss0r: fragalot: Have you video recorded some of your mad scraping skillzz ?
10:51 AM fragalot: no
10:51 AM fragalot: syyl_ is better at that than me :P
10:51 AM miss0r: :] go reinact it
10:51 AM miss0r: hardly fair comparison. Theres little he can't kick our asses at.
10:53 AM miss0r: If I can choose between lobster and spaghetti, i'll take the lobster. but if that is sold out, i'll take the spaghetti.
10:53 AM Roguish: JT-Shop: we're going 100+ here today.
10:53 AM miss0r: damn
10:55 AM miss0r: fragalot: When AvE breaks the bolt for the breaking bell :D hehe
10:56 AM fragalot: I liked how he predicted himself doing it
10:56 AM miss0r: yeah
10:56 AM fragalot: wait until he tries to extract it
10:56 AM miss0r: "Oh for frogs snacks!"
10:56 AM miss0r: hehe, I can't wait!
11:04 AM miss0r: Meh. he pulled it off
11:05 AM fragalot: nearly made it worse though
11:05 AM fragalot: which is what I meant
11:05 AM miss0r: yeah. Funny though - he has a milling machine; why would he not mount it proper in there to do that job? :S
11:05 AM fragalot: because it's AvE.
11:06 AM fragalot: and his hands are probably more accurate than his clapped out bridgeport :P
11:06 AM miss0r: hehe probally :)
11:07 AM miss0r: Gotta return to family duty. see you agound
11:07 AM miss0r: around*
11:14 AM jthornton: Nick001-shop: you around?
11:25 AM skunkworks: jthornton: is mesaus.com down?
11:25 AM jthornton: no
11:25 AM skunkworks: heh - just came up
11:51 AM Lcvette: quiet today
11:53 AM IchGucksLive: hi all
11:53 AM IchGucksLive: so im off duty for today at this age and this temps outside a pain
11:54 AM IchGucksLive: gloops, france wins messi OUT
11:56 AM IchGucksLive: diverdude, still online
11:58 AM diverdude: IchGucksLive: yes
11:59 AM IchGucksLive: diverdude, with CAM i mean the software that generates the G-code out of the part/drawing/3dmodell
11:59 AM IchGucksLive: diverdude, not a webcam
12:00 PM diverdude: IchGucksLive: ahh sorry :) I am not using any...I am writing my own python code
12:01 PM IchGucksLive: diverdude, what parts are you making
12:01 PM IchGucksLive: or expect to make as python is involved
12:03 PM diverdude: IchGucksLive: i am moving a camera around in the XY plane and autofocusing in the Z plane
12:04 PM IchGucksLive: ah ok for astronomics or ...
12:04 PM IchGucksLive: i got a C16 around for imaging stars and nebulars
12:04 PM diverdude: IchGucksLive: no its actually for microscopic use
12:05 PM IchGucksLive: the complete other way
12:05 PM diverdude: yes :)
12:05 PM IchGucksLive: so precicion is best repedatly also
12:05 PM diverdude: yes exactly
12:06 PM diverdude: and my table is not the best quality
12:06 PM diverdude: but i hope it will work
12:07 PM IchGucksLive: as there is no workforce cheep Ballscrew SFU1204 and 2Nm Stepper system 36V on a TB6560
12:07 PM IchGucksLive: timy and good
12:08 PM IchGucksLive: better a 542t on 36V microstepping if needed
12:08 PM IchGucksLive: diverdude, http://heimwerkermarkt-tretter.de/3achs_elek.jpg
12:08 PM diverdude: IchGucksLive: is this yours?
12:09 PM IchGucksLive: yes
12:09 PM IchGucksLive: http://heimwerkermarkt-tretter.de/4achs_elek.jpg
12:09 PM IchGucksLive: http://heimwerkermarkt-tretter.de/5achs_elek.jpg
12:09 PM IchGucksLive: http://heimwerkermarkt-tretter.de/schrank.jpg
12:10 PM diverdude: impressive
12:10 PM diverdude: looks very tidy
12:10 PM IchGucksLive: for all mashines the equal elektronics
12:11 PM diverdude: what are you using it for
12:11 PM IchGucksLive: tidy is the small tb6560 mashines 30x30x30cm all included
12:11 PM IchGucksLive: diverdude, im building mashines for education
12:11 PM IchGucksLive: diverdude, around 80-100 a year
12:12 PM IchGucksLive: diverdude, http://tv-profi-gmbh.de/masch_baumh_k.jpg
12:12 PM diverdude: oh wauw... I think I should have ordred a machine from you then instead
12:12 PM IchGucksLive: diverdude, if you put the 1204 in there you got a tiny system
12:13 PM IchGucksLive: diverdude, i do not sell
12:13 PM diverdude: yes indeed
12:13 PM diverdude: oh ok
12:14 PM IchGucksLive: diverdude, the tiny mashine running here https://www.youtube.com/watch?v=PXYliAOGsMM
12:14 PM IchGucksLive: diverdude, and also the lectronics in full view
12:19 PM IchGucksLive: diverdude, did you take a look at the video
12:20 PM diverdude: yes i am watching it now
12:21 PM diverdude: its quite neat
12:22 PM IchGucksLive: its a 0,01mm system at 2400mm/min
12:22 PM IchGucksLive: workarea 175x175x65
12:23 PM Roguish: Ich's : very nice electrical boxes....
12:23 PM diverdude: when you say 0.01mm system, do you mean resolution then?
12:24 PM IchGucksLive: yes
12:24 PM IchGucksLive: diverdude, but i go only halfstepping
12:24 PM IchGucksLive: so there is more to be if you need
12:24 PM IchGucksLive: diverdude, with only a dip switch change
12:25 PM IchGucksLive: Roedy, thanks if you make mass you go simple and easy
12:25 PM IchGucksLive: Roguish, thanks if you make mass you go simple and easy
12:26 PM diverdude: i see
12:26 PM Roguish: very efficient, cost effective
12:26 PM IchGucksLive: diverdude, with 800 insted of 400 you are at 0,005
12:26 PM IchGucksLive: diverdude, at 1600 0,
12:27 PM IchGucksLive: diverdude, at 1600 0,0025
12:27 PM IchGucksLive: diverdude, the 542 go up to 32 *200
12:27 PM IchGucksLive: diverdude, this will exite the C/ precision on Ballscrews
12:28 PM IchGucksLive: c/
12:28 PM IchGucksLive: c7
12:28 PM IchGucksLive: LOL
12:28 PM IchGucksLive: Roguish, cost is always my problem
12:28 PM IchGucksLive: Roguish, if you get 2500Euros and want 12CNC
12:29 PM IchGucksLive: Roguish, ofcause with wirechain
12:30 PM IchGucksLive: diverdude, the complete electronics on Tiny is 104Euros
12:30 PM IchGucksLive: including Board Cable PSU and Steppers
12:31 PM IchGucksLive: 185oz the 210oz ads 10 euros
12:32 PM IchGucksLive: but then you need to extend the Z spindle as 76mm motors will colide
12:35 PM IchGucksLive: im off Have a nice sutorday watering the Garden GN8
12:41 PM tjb1: 94 here :/
12:48 PM gloops: hope you got all that diverdude
12:49 PM diverdude: gloops: well.... yeah....but I have to keep working on the machine I have for now
12:49 PM gloops: heh
12:51 PM diverdude: gloops: right now i am battling with mostly autofocus implementation of camera+ z axis
12:52 PM gloops: whats not working with it?
12:53 PM gloops: the z obviously wants to be slower than the speed the camera can focus
12:53 PM gloops: but cameras can focus pretty fast - like there is an auto tracking mode
12:54 PM diverdude: gloops: well...i am just working with the api for the camera and finding a suitable metric for blurriness of the image and find a good scheme for moving z in the right direction and such
12:54 PM gloops: so you are going to select a focus point on the camera - set tracking mode, and you can move the z up and down as you want, the camera will remain focused on that point
12:55 PM diverdude: gloops: there is no built in autofocus on the camera
12:55 PM diverdude: gloops: i am implementing that part myself
12:55 PM gloops: no autofocus?
12:55 PM gloops: i didnt know anybody didnt have AF these days
12:56 PM diverdude: gloops: well on microscopic lenses there is not really so many lenses w. autofocus
12:56 PM gloops: so, how are you focusing then?
12:57 PM gloops: is this a standard 35mm macro lens?
12:57 PM diverdude: gloops: no
12:57 PM diverdude: gloops: it has no moving parts
12:57 PM gloops: so you move the camera to focus
12:58 PM diverdude: exactly
12:58 PM gloops: or is it electronic?
12:58 PM gloops: ahh
12:58 PM diverdude: i move camera up and down until i hit the spot.
12:58 PM diverdude: field of depth is only about 100mu
12:59 PM gloops: could make for pretty dull vids you know lol
12:59 PM diverdude: hehe what do you mean? :)
12:59 PM gloops: you are making video or stills?
12:59 PM diverdude: stills
12:59 PM gloops: ahh
12:59 PM gloops: oh thats ok then
01:00 PM diverdude: there is no need to make a video....i just need to grab an image when i have moved my axis
01:01 PM gloops: so you want fine z control
01:01 PM gloops: if you want an in focus view of a 3d object, with such shallow dof, you need to stack
01:02 PM diverdude: gloops: what do you mean by stacking?
01:02 PM gloops: stack the images
01:03 PM gloops: so we focus on the very top of the object, take a shot
01:03 PM gloops: move down until the next layer is in focus - take a shot
01:03 PM gloops: and so on until we reach the bottom
01:03 PM diverdude: gloops: ahh yes ok.
01:03 PM diverdude: gloops: and then look at each slice independently
01:04 PM gloops: no
01:04 PM gloops: then we stack the lot into one image
01:04 PM diverdude: gloops: or somehow combine it
01:04 PM gloops: the OOF is deleted
01:04 PM gloops: yes
01:04 PM diverdude: how is it combined?
01:04 PM gloops: there is software to this automatically, or you do it manually in gimp or photoshop
01:05 PM diverdude: gloops: i wonder what technique this software is using
01:05 PM gloops: place one image in each layer in photoshop
01:05 PM tjb1: Whats the best way to put multiple small wires into a terminal block? Twist and put a fork terminal on it?
01:06 PM diverdude: gloops: yes but somehow all those layers are combined and only the in-focus parts are kept
01:06 PM gloops: diverdude the software recognises sharpness and masks out the rest in each image
01:06 PM gloops: youre left with a combined all sharp image
01:06 PM gloops: or you do that yourself, manually in photoshop
01:07 PM gloops: a bit time consuming but can bring staggering results
01:09 PM diverdude: gloops: yeah...but it must be a special algorithm that somehow picks out all in-focus areas and combines them
01:09 PM gloops: https://digital-photography-school.com/how-to-focus-stack-macro-images-using-photoshop/
01:10 PM gloops: you better start reading on this diverdude, you wont make good macro works if you dont know about it
01:11 PM gloops: oh that page needs login
01:11 PM gloops: https://photographylife.com/how-to-focus-stack-images
01:12 PM diverdude: gloops: thats interesting....thanks for the tip
01:13 PM gloops: i used to be a keen amateur, not got time much these days
01:13 PM diverdude: gloops: hehehe :) yeah looks like some really interesting thing can come from focus stacking
01:15 PM gloops: thinking about it, you could also control bellows with a stepper motor
01:16 PM diverdude: gloops: what is bellows?
01:17 PM diverdude: oh
01:17 PM gloops: lol
01:17 PM diverdude: change of topic hehe
01:17 PM gloops: no same topic
01:17 PM diverdude: why would a bellow be interesting in this context?
01:18 PM diverdude: maybe its just my english which is not so good :) I am thinking bellows for the fireplace hehe
01:19 PM gloops: https://upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Bellows_macro.jpg/1920px-Bellows_macro.jpg
01:19 PM gloops: with bellows you can adjust focus
01:20 PM gloops: not by moving the camera, but by moving the lens in relation to the focal plane
01:20 PM JT-Shop: Roguish: we are under a heat advisory but only showing 93°F as the high but heat index of 106°F
01:21 PM fragalot: hi
01:21 PM diverdude: gloops: right.....but will that not have the same effect?
01:21 PM tjb1: JT-Shop: where are you?
01:21 PM JT-Shop: south east Missouri
01:22 PM fragalot: diverdude: are you focus stacking? or what is the context here?
01:22 PM gloops: diverdude yes it will
01:22 PM gloops: have you ever used extension tubes diverdude?
01:23 PM tjb1: JT-Shop: 94 now near corning ny
01:23 PM fragalot: bellows (like gloops showed you) are actually a very good and common technique to do high depth of field macro shots (using focus stacking)
01:23 PM diverdude: gloops: yeah
01:24 PM diverdude: fragalot: ok but can't that same be done by just moving the camera?
01:24 PM fragalot: diverdude: not quite the same
01:24 PM gloops: one of my plans is to make a large format camera, thats if i get round to it before film is extinct
01:25 PM fragalot: diverdude: what you do is keep the LENS fixed, and move the camera
01:25 PM fragalot: that way your field of view does not change
01:25 PM fragalot: but the focus point does shift
01:25 PM tjb1: was going to see a race at watkins glen but its disgusting outside
01:25 PM diverdude: fragalot: yeah, but how is the effect different from moving the camera and lens together?
01:26 PM fragalot: diverdude: perspective change
01:27 PM fragalot: i'm not saying that moving both is a bad technique
01:27 PM fragalot: and i'm not saying that bellows or focus ring tweaking is better :-)
01:27 PM fragalot: they all have advantages & drawbacks
01:27 PM gloops: focus stacking with linux - http://www.barrygrussling.com/?p=127
01:28 PM diverdude: fragalot: yeah...sorry its not to question what you are saying... I just find it interesting and want to understand
01:28 PM fragalot: diverdude: warning, the water gets deep with focus stacking :P dip your toe in and you're hooked!
01:29 PM diverdude: fragalot: haha :)
01:29 PM fragalot: diverdude: this is basically a comparison between focussing by ring, and focussing moving the camera: http://zerenesystems.com/cms/_media/stacker/docs/troubleshooting/ringversusrail/image013.gif
01:29 PM fragalot: note how the perspective changes and the jar tips over.. that's what you get when moving the camera
01:30 PM diverdude: aha....so the tipped jar is when using focus ring?
01:30 PM gloops: what lens are you using anyway diverdude?
01:30 PM renesis: i am so confused right now
01:30 PM fragalot: diverdude: the tipped jar is when moving the camera, with the focus ring your perspective stays good, but it is difficult to move the focal point in tiny increments
01:30 PM gloops: renesis im guessing you voted for brexit too
01:31 PM renesis: gloops: i voted for that fail bitch hillary
01:31 PM renesis: :(
01:31 PM gloops: lol
01:31 PM gloops: what seems to be the problem?
01:31 PM diverdude: gloops: this one: https://www.edmundoptics.com/imaging-lenses/telecentric-lenses/8X-65mm-WD-In-Line-CompactTL-Telecentric-Lens/
01:32 PM renesis: ha, nothing i only read a few lines of scroll and i dont know anything about cameras
01:32 PM renesis: well, i know enough to be confused
01:33 PM gloops: fixed aperture f45...
01:33 PM diverdude: yes
01:33 PM fragalot: gloops: it's a microscope lens, not a DSLR lens...
01:33 PM diverdude: fragalot: its actually a telecentric lens
01:33 PM gloops: i cant say im familiar with it
01:34 PM fragalot: diverdude: my mistake. Didn't know those existed.. Interesting though!
01:34 PM gloops: but f45 raises a few problems
01:34 PM diverdude: gloops: what kind of problems?
01:34 PM gloops: not least motion/light
01:34 PM fragalot: diverdude: the "I can't shoot hand-held at night" kind
01:34 PM fragalot: which is irrelevant
01:34 PM fragalot: :P
01:35 PM diverdude: gloops: yeah i nned a lot of light...but i got that :)
01:35 PM gloops: you wont be getting a mosquitos eyes etc
01:35 PM gloops: in the field anyway lol
01:35 PM fragalot: somehow I don't think that lens is meant for field use
01:35 PM diverdude: gloops: oh, no haha true...im not planning to :)
01:35 PM gloops: also noise
01:36 PM diverdude: fragalot: telecentric lenses has a larger field of view...and they also have the cool effect that they remove perspective so that objects at different distance appears to be side by side
01:36 PM gloops: http://www.earthboundlight.com/phototips/diffraction-small-apertures.html
01:36 PM diverdude: sorry not larger field of view....larger depth of field i mean
01:37 PM gloops: however at £1000 lets assume the lens compensates for that
01:37 PM fragalot: diverdude: yeah I'm reading up on them now, very interesting :D
01:37 PM fragalot: gloops: it's a very weird lens
01:37 PM gloops: yes unusual
01:37 PM fragalot: I kinda want one just to add to the collection now even though I have absolutely no use for one >.>
01:38 PM diverdude: i got a good quality normal microscope lens as well but it does not do as good images
01:38 PM gloops: have you had good results with the lens so far diverdude?
01:38 PM diverdude: gloops: yes i think its giving me good images
01:38 PM gloops: ok
01:38 PM diverdude: definitely usable
01:39 PM diverdude: i have a 4x, 6x, 8x and and different type of 10x lens
01:39 PM fragalot: i'm currently eyeing up a sony FE 100-400mm f/4.5-5.6 GM
01:39 PM diverdude: but right now i am struggeling with the camera API.....its quite poorly documented :(
01:40 PM fragalot: at least it's documented :P
01:40 PM fragalot: most API's ive been trying to use lately have missing or blank pages
01:41 PM diverdude: its horrible
01:41 PM diverdude: and the most simple stuff takes forever
01:42 PM diverdude: but focus stacking is definitely something i will look into
01:42 PM fragalot: yeah it can really improve macro shots if that's what you are going for
01:42 PM diverdude: because my subject is not always flat and sometimes i cannot get everything in focus....so focus stacking could help me there
01:42 PM fragalot: Exactly.
01:43 PM gloops: its a must
01:43 PM diverdude: so good point guys...thanks a lot!
01:45 PM diverdude: bbl
01:45 PM gloops: the big downside of fixed aperture is that you cant bracket each stack to hdr the amoeba ...
01:46 PM fragalot: would you really want to bracket using the aperture when doing focus stacked macro shots?
01:47 PM gloops: why not?
01:47 PM CaptHindsight: why are electric skateboards still >$1K?
01:48 PM fragalot: CaptHindsight: you can get a hoverboard for $120
01:48 PM fragalot: or a lil' scooter for $150
01:48 PM gloops: why were electronic skateboards ever $1000?
01:48 PM fragalot: batteries, marketing, or the lack thereof
01:48 PM CaptHindsight: yeah but an actual skateboard is min $800
01:49 PM fragalot: gloops: I'd figure the change in depth of field would mess you up when going to stack 'm?
01:49 PM fragalot: I'd probably prefer to change exposure time to bracket on a focus stack
01:49 PM fragalot: but,.. i do have zero experience with it :D
01:50 PM CaptHindsight: https://www.amazon.com/Boosted-Dual-2000W-Electric-Skateboard/dp/B00NY6AFYI
01:51 PM tjb1: CaptHindsight: make your own
01:52 PM CaptHindsight: decades ago i had motorized that we ran nitromethane in
01:52 PM CaptHindsight: >50 mph
01:52 PM SpeedEvil: Annoyingly, proper hoverboards are harder to make, very, very loud and really, really illegal.
01:52 PM SpeedEvil: (at least here)
01:53 PM tjb1: Ive seen enough of casey neistat run around NYC on a boosted board
01:53 PM tjb1: damn scary
01:53 PM CaptHindsight: >80 Kph
01:53 PM Rab: "aerospace-grade batteries" "machined metal" "composites instead of cheap plastic"
01:53 PM SpeedEvil: (100kW or so of fans, ...)
01:54 PM CaptHindsight: https://www.aliexpress.com/item/3-70mm-Hallow-Shaft-Hub-Motor-Wheel-24v-36v-150w-Motor-Wheel-Scooter-Without-Shaft-For/32819700639.html
01:55 PM gloops: yes youre right fragalot, i am a bit rusty tbh
01:55 PM gloops: i need to draw something like this http://shaneturpin.com/2/_MG_9833.JPG
01:56 PM fragalot: works of art, old cameras :D
01:56 PM gloops: however, i dont usually work like that, i start with a basic concept and work out the fitting as i build
01:57 PM gloops: so probably better making one by hand, or a prototype, then draw one in cad using the measurements
01:57 PM CaptHindsight: https://www.aliexpress.com/item/12v-24v-36v-2600rpm-min-3-83mm-Skateboard-Motor-Electric-Motor-Wheels-200w-250w-260w-For/32830043664.html?spm=2114.search0104.3.144.7d4d339dOMF7Vm&ws_ab_test=searchweb0_0,searchweb201602_3_10152_10151_10065_10344_10130_10068_10324_10547_10342_10325_10546_10343_10340_10548_10341_10545_10696_10084_10083_10618_10307_10059_100031_524_10103_10624_10623_10622_10621_10620,searchweb201603_1,ppcSwitch_5&algo_expid=
01:57 PM CaptHindsight: e2fc14c7-bcc2-4eee-8187-a52980d5c1e1-23&algo_pvid=e2fc14c7-bcc2-4eee-8187-a52980d5c1e1&transAbTest=ae803_1&priceBeautifyAB=0
01:58 PM CaptHindsight: my apologies
01:58 PM CaptHindsight: https://www.aliexpress.com/item/12v-24v-36v-2600rpm-min-3-83mm-Skateboard-Motor-Electric-Motor-Wheels-200w-250w-260w-For/32830043664.html
02:02 PM fragalot: https://www.youtube.com/watch?v=3LU_tFLZCCU <- always interesting to learn WHY a certain tool geometry works better than another
02:03 PM SpeedEvil: CaptHindsight: one of those with a toothed outer would be fun
02:04 PM CaptHindsight: I have some 6k rpm servos ~500W
02:05 PM fragalot: brushless RC motors would work well too
02:05 PM fragalot: high power in tiny packages, and the motor/ESC combo's are quite cheap
02:05 PM fragalot: CaptHindsight: https://odriverobotics.com/ <= :P
02:09 PM CaptHindsight: 5K RPM servo should get me to 90kph
02:09 PM gloops: will your trainer sole stop you at that speed?
02:09 PM CaptHindsight: now i need to get my bones softer again
02:10 PM CaptHindsight: regenerative breaking
02:11 PM fragalot: of your bones?
02:11 PM CaptHindsight: what we started with back then http://wackyboards.blogspot.com/2010/01/motoboard.html
02:13 PM CaptHindsight: if you break your bones >40 you have to regenerate them
02:13 PM gloops: may as well not bother
02:14 PM CaptHindsight: I'd need an ironman suit now
02:15 PM gloops: zorbing could be the answer
02:15 PM Rab: Ditto...I've still got my awesome banana board, but I'm afraid to get on it now.
02:15 PM gloops: or is it xorbing
02:16 PM CaptHindsight: my friends started breaking bones in their 20's just hoping on for a few minutes
02:16 PM CaptHindsight: noithing like having to explain to work why you have a cast for 4 weeks
02:18 PM fragalot: CaptHindsight: that is private information
02:19 PM CaptHindsight: best reasons, sex, ghosts, defending against terrorists
02:20 PM gloops: Uru2 Por1
02:22 PM gloops: France crushed Argentina earlier, i think France will be the team to beat
03:50 PM gloops: UK to develop plans for its own satellite system if EU’s restricts access to Galileo https://www.express.co.uk/news/politics/981917/brexit-latest-galileo-european-union-satellite-uk-space-agency
04:12 PM andypugh: gloops: Surely we just ask to keep out share of the constellation :-)
04:12 PM Lcvette: anyone in here good with electronics and correct board building?
04:12 PM Lcvette: circuit
04:13 PM Lcvette: I'm working on a diy wo probe
04:13 PM Lcvette: wireless*
04:13 PM Lcvette: project
04:13 PM Lcvette: http://imgur.com/gallery/Sz2I2sZ
04:14 PM Lcvette: http://imgur.com/gallery/FJyErZr
04:14 PM Lcvette: never done anything like this before
04:14 PM Lcvette: so learning as i go
04:14 PM andypugh: Tracks seem thinner than necessary
04:15 PM andypugh: What PCB software are you using?
04:15 PM Lcvette: one i found from watching YouTube
04:15 PM Lcvette: easyeda
04:15 PM Lcvette: online
04:15 PM andypugh: OK, never heard of it :-)
04:15 PM andypugh: Does it do ground planes?
04:16 PM Lcvette: maybe?
04:17 PM Lcvette: I've never designed or built a circuit board before
04:17 PM Lcvette: so..
04:18 PM Lcvette: i priced together information i find on google
04:18 PM Lcvette: pieced
04:19 PM Lcvette: to make an ir circuit
04:19 PM Lcvette: with battery charging circuit
04:20 PM Lcvette: for a snall 3.7v lithium battery pack
04:20 PM andypugh: How are you going to make it?
04:20 PM Lcvette: make the circuit board?
04:20 PM andypugh: Yes
04:21 PM andypugh: (Seeedstudio is pretty cheap, I use them a fair bit)
04:21 PM Lcvette: easyeda has an online sourcing thingy
04:21 PM andypugh: Ah, OK.
04:21 PM Lcvette: their cheap
04:22 PM Lcvette: but if like to have them made with the components on them so I'll probably have some made in China i guess
04:22 PM andypugh: Seeed (three ees) will do 10 boards for $5
04:22 PM Lcvette: anyone interested in a group diy projects?
04:23 PM Lcvette: :)
04:24 PM andypugh: Or PCBAstore will put 300 components on a board for £47 per board, including £40 of components.
04:24 PM andypugh: Any of them should be able to make that board. I was going to suggest fatter tracks if you were going to DIY it.
04:26 PM Lcvette: ok
04:26 PM Lcvette: I'm not sure if the circuitry is good
04:27 PM Lcvette: it's best guess on my part
04:27 PM Lcvette: lol
04:28 PM Lcvette: I'm still trying to lab how to use the test functionality in the online software
04:28 PM Lcvette: learn
04:30 PM Lcvette: need to make the receiver still to
04:51 PM pcw_home: Lcvette A thought I had about the FF1 error in the drives is that it may be that there is a significant delay from step to simulated encoder output (especially if the simulated encoder output is done in software)
04:52 PM pcw_home: that is at 100% velocity feed forward in the drives and ~12IPS your ~8 mill following error represents ~600 usec
04:53 PM pcw_home: that may just be a drive characteristic (and make them quite hard to tune for closed loop operation)
04:54 PM Deejay: gn8
05:00 PM pcw_home: so it may be better to just run them open loop (and complain to Mesa about why step/dir doesn't not support homing to index even though the firmware does)
05:16 PM Lcvette: pcw_home: I'm not complaining about mesa at all
05:17 PM Lcvette: i know the issue is in the drives
05:17 PM Lcvette: is evident
05:17 PM Lcvette: i think your product and support is excellent
05:19 PM Lcvette: i did try and research how to setup the hal to read the feedback from the encoder like you mentioned but i got lost in the reading
05:19 PM Lcvette: i did learn a few more tidbits along the way though
05:20 PM Lcvette: to the contrary of complaining, o give you alot of credit on Instagram and my forum thread for the help I've received
05:21 PM Lcvette: if be running open loop blind with massive following error had you not helped me
05:21 PM Lcvette: I'm grateful!
05:30 PM pcw_home: What I'm saying is that you may be OK with open loop (if the following error is due to a fixed delay and is equivalent between axis, it really doesn't matter
05:32 PM Lcvette: pcw_home: lookng over the diagram I'm not sure how to interpret if the encoder feedback is software or not, i see it goes through an error counter and then there's a divider, but mine is set at 1x for no dividing and true counting. then it has to the controller
05:32 PM Lcvette: ah i see
05:32 PM pcw_home: yeah no real way to know except add a real encoder to the ballscrew
05:33 PM Lcvette: i don't see i could split the encoder signal before it enters the drive?
05:33 PM Lcvette: suppose*
05:34 PM pcw_home: its possible but may be bad for noise immunity and a cable nightmare
05:37 PM Lcvette: so if its a delay, does that mean i should set the gain back down?
05:38 PM infornography: ello
05:41 PM infornography: i'm looking at machines to run linuxcnc, for a router table , 3 axis and a spindle, step motors.
05:41 PM pcw_home: I mainly means that closing the externally loop is not going to work very well
05:41 PM pcw_home: It
05:43 PM Lcvette: ok
05:43 PM infornography: an advice on machines to avoid, I've been looking at machines with a parallel port off craigslist
05:43 PM infornography: *any
05:44 PM Lcvette: computer?
05:45 PM infornography: that's what I'm shopping for
05:46 PM Lcvette: for software stepping?
05:47 PM Lcvette: pcw_home: does that mean it's not worth further looking into and trying your other thought on the low bandwidth feedback method?
05:50 PM infornography: There is nothing to drive the motors yet, I'm guessing software stepping. Unless there is another method that is better?
05:51 PM Lcvette: Mesa hardware is certainly better
05:52 PM Lcvette: smoother motion, more inputs and outputs, higher speeds and less fussy about the computer you use
05:52 PM infornography: I will look into that
05:52 PM infornography: thanks
05:54 PM Lcvette: for steppers, 5i25/7i76 plug and go kit is terrific
06:01 PM pcw_mesa: Lcvette: only if homing to index is needed
06:03 PM Lcvette: if like to have that function
06:03 PM Lcvette: I'd
06:03 PM pcw_mesa: I really should arrange to get homing to index on stepgen supported, only needs 1 pin per axis
06:04 PM Lcvette: yeah?
06:04 PM Lcvette: must be a big job if guess
06:04 PM Lcvette: I'd
06:05 PM Lcvette: can't even imagine. lol
06:05 PM pcw_mesa: yeah it works like encoder homing to index but latches the current stepcount instead of encoder count
06:05 PM pcw_mesa: (on index detection)
06:05 PM Lcvette: ah
06:08 PM Lcvette: is the low bandwidth config you were referring to a major hal overhaul?
06:10 PM pcw_mesa: not terribly bad, you add a second PID component for the slow encoder feedback (and the slow encoder feedback PID output is fed into the primary PID bias input)
06:12 PM pcw_mesa: It will remove the following error at speed, but unfortunately I don't think it will work with homing to index
06:12 PM Lcvette: oh
06:13 PM pcw_mesa: because the stepgen is not aware of the index
06:13 PM pcw_mesa: it wil work if all feedback is via the encoder but that has other issues with those drives
06:14 PM Lcvette: oh
06:15 PM Lcvette: I'm confused
06:15 PM pcw_mesa: so best bet is to get stepgen index support
06:15 PM Lcvette: i was wanting to try feedback that way via the encoder
06:16 PM Lcvette: ok
06:17 PM pcw_mesa: I would just finish you machine, home to limits now and start making chips and worry about homing to index later
06:19 PM Lcvette: so 0.003" following error was at Max rapid speed. in open loop but at lower does it was less, like.
06:19 PM Lcvette: 0.0005"
06:20 PM Lcvette: waiting on my bearing blocks
06:21 PM pcw_mesa: right so as I mentioned, the following error may only represent delay in the encoder emulation from the drive
06:22 PM pcw_mesa: if you have .003: FE at 12 IPS thats only a 250 usec delay
06:23 PM Lcvette: would that not shift the graph plot to the right completely?
06:23 PM pcw_mesa: no
06:23 PM pcw_mesa: a fixed delay causes an error proportional to velocity
06:24 PM pcw_mesa: but if all drives have the same delay, it causes no path errors
06:25 PM Lcvette: i see
06:28 PM pcw_mesa: Actually I think there's a way to check this
06:28 PM Lcvette: ok
06:29 PM Lcvette: hole?
06:30 PM pcw_mesa: if we think there's a 250 usec delay from step to feedback you could sample the encoder 250 usec later than the stepgen and check the (open loop) FE
06:31 PM pcw_mesa: bbl
06:31 PM Lcvette: ok
06:31 PM Lcvette: I'll need some clarification on that procedure i think
06:31 PM Lcvette: lol
06:31 PM Lcvette: later
06:48 PM andypugh: This is nice. I don;t need it, but it’s nice. https://www.ebay.co.uk/itm/metal-working-lathe-Mikron/263777776599
06:57 PM XXCoder: pretty small
07:02 PM andypugh: Yes, it’s a mig watchmakers lathe
07:02 PM andypugh: (big)
07:03 PM andypugh: That particular one seems to have rather a good selection of the accessories. http://www.lathes.co.uk/mikron/
07:10 PM XXCoder: interesting
07:56 PM Lcvette: that's a sweet looking like lathe!
09:57 PM Tecan: https://www.thingiverse.com/thing:92266 hotcup of water some filament and spring mold
09:58 PM XXCoder: nice
09:58 PM XXCoder: how firm is it?
09:59 PM XXCoder: one step closer to purely printed rc car lol
10:21 PM Tecan: i would assume it can be done with anykind of filament aswell so it could be really firm and durable
10:22 PM Tecan: nylon or abs might boil up nicely
10:23 PM Tecan: pla is what they used but its prone to warping with sunlight even
10:29 PM Tecan: https://www.ebay.ca/itm/550W-Precision-Mini-Metal-Lathe-Metalworking-Drilling-2500RPM-Cutter-BRAND-NEW/401525252077 << is the metal block with all the bolts in it for holding parts ?
10:29 PM Tecan: and does the big handle on it squish it down evenly ?
10:32 PM XXCoder: in least it dont say mill lathe 3d printing lol
10:32 PM Tecan: oh its a quick change tool post
10:33 PM XXCoder: ah the 4 bolt and hand;e
10:33 PM XXCoder: *8
11:04 PM nallar is now known as Ross