#garfield Logs

Feb 13 2022

09:44 AM rue_bed2: 6? hours sleep?
09:52 AM rue_bed2: really?
10:32 AM rue_mohr: ?
10:37 AM Tom_L: 6? hours
10:44 AM rue_mohr: I was up till about 1
10:44 AM rue_mohr: I dont really remember
10:45 AM Tom_L: gave up on the polygon thing
10:45 AM rue_mohr: it didn't sound like it wanted to give
10:46 AM Tom_L: just surprised nobody of the 900+ didn't comment on that
10:46 AM Tom_L: the version should have been ok since i have the last one before they went to the cloud
10:50 AM rue_mohr: do you think it was updated for the cloud version?
11:15 AM Tom_L: i doubt it
11:15 AM Tom_L: they just changed the GUI, not the backbone
11:15 AM rue_mohr: most of the code is gui
11:16 AM Tom_L: and that article was written prior to that
11:17 AM rue_mohr: hmm
11:22 AM rue_mohr: have you ever seen that tool enabled?
11:23 AM Tom_L: never paid much attention to it
11:24 AM Tom_L: it is enabled when there are solids present
11:24 AM Tom_L: it should be
11:24 AM rue_mohr: do you have an existing project with a solid available?
11:24 AM Tom_L: of course
11:25 AM rue_mohr: well open it and see if any of them enable that button
11:25 AM Tom_L: been there done that
11:25 AM rue_mohr: none of the projects with solids in them enable the button?
11:25 AM Tom_L: they do
11:26 AM rue_mohr: excellent
11:26 AM rue_mohr: then you know for some reason the object in that tutorial wasn't classed as a solid by the program
11:26 AM rue_mohr: so, why?
11:26 AM Tom_L: because it isn't
11:26 AM Tom_L: it's a sketch line
11:26 AM rue_mohr: there ya go
11:26 AM rue_mohr: broken tutorial
11:27 AM Tom_L: solidworks does it just fine
11:27 AM Tom_L: as does my cad cam
11:28 AM rue_mohr: did you search to see if its a listed bug?
11:28 AM Tom_L: i searched a few things and came up with nothing
11:36 AM rue_mohr: so, what do you think of the idea of adding a cnc assist onto my lathe?
11:37 AM Tom_L: do it
11:38 AM rue_mohr: I'm wondering if there is a power chuck that would fit my lathe
11:38 AM rue_mohr: find an old ebay one of soemthing
11:38 AM rue_mohr: hydraulic?
11:39 AM rue_mohr: ok, I have some more circuits to try
11:39 AM rue_mohr: I was laying in bed thinking hard about using a diode tho
11:40 AM rue_mohr: hey, what about a diode with a FET bypass?
11:41 AM Tom_L: hydraulics would get expensive and complicated
11:41 AM Tom_L: the okuma had one
11:42 AM Tom_L: i doubt grbl would support it
11:42 AM Tom_L: you'd have to move to linuxcnc probably
11:42 AM rue_mohr: I thought it was some kinda thrust plate like thing that rode behind the chuck
11:42 AM rue_mohr: I'v done my own NC system before :)
11:42 AM rue_mohr: my old machine still runs on it
11:43 AM rue_mohr: I'm sad I didn't persue it, back in 1996
11:43 AM rue_mohr: I could have a contender for MACH
11:43 AM Tom_L: $$
12:23 PM rue_mohr: huh
12:23 PM rue_mohr: well
12:23 PM rue_mohr: I had an idea
12:23 PM rue_mohr: a series diode, with a bypass fet
12:23 PM rue_mohr: and
12:23 PM rue_mohr: well
12:24 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/3.3Verr.png
12:24 PM rue_mohr: the error is about 9% worst
12:24 PM rue_mohr: the efficiency is 81% worst
03:06 PM rue_mohr: tom I managed a linear regulator. "no dropout"
04:07 PM Tom_L: :)
05:27 PM Tom_L: gonna try another install of it
06:03 PM Tom_L: same thing
06:47 PM rue_mohr: 2324
06:47 PM rue_mohr: I need to post it more often if I'm ever gonna know if it went up or down
06:47 PM rue_mohr: ah it was 2312 last
06:47 PM rue_mohr: k
06:58 PM rue_shop3: https://www.aliexpress.com/item/1005002969912493.html
06:58 PM rue_shop3: https://www.aliexpress.com/item/33058529397.html
06:58 PM rue_shop3: why are these nice switches so cheap
06:58 PM rue_shop3: https://www.aliexpress.com/item/32918157519.html
07:04 PM Tom_L: ok fixed
07:05 PM Tom_L: finally had a chance to ask my kid
07:05 PM Tom_L: i was in the wrong workbench
07:05 PM Tom_L: instead of wireframe and surfaces i should have been in generative shape design
07:05 PM Tom_L: then that icon works fine
07:06 PM Tom_L: it has more functionality than wireframe
07:07 PM Tom_L: what a pisser....
07:24 PM rue_shop3: workbench?
07:24 PM rue_shop3: hmm
07:25 PM rue_shop3: you should have them add that detail
07:31 PM Tom_L: meh
07:35 PM Tom_L: if i would have taken those advanced classes i would have known that
07:54 PM rue_mohr: the tutorial should mention it
08:24 PM Tom_L: ok it's working
08:24 PM Tom_L: one thing i couldn't figure out but won't prevent it from working
08:24 PM Tom_L: it wanted me to group all the formulas together and i forgot how to do that
08:56 PM Tom_L: at least i learned a little
09:21 PM rue_mohr: i gpt a regulator made
09:21 PM rue_mohr: it uses a P channel fet and goes into bypass at 3.3V
09:22 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1220916.jpg
09:22 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1220917.jpg
09:22 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1220926.jpg
09:22 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1220927.jpg
09:22 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1220932.jpg
09:23 PM rue_mohr: the LM10 is a cool chip, its got a votlage reference and an op-amp in it
09:23 PM rue_mohr: BUT, its old as hell, the amplifiers are low gain and SLOW
09:29 PM Tom_L: are you in a hurry?
09:29 PM Tom_L: you draw nice schematics
09:30 PM Tom_L: mine would look like crap hand drawn :/
09:30 PM rue_mohr: when I'm going thru the first revs of an idea I dont make it nice
09:31 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1220893.jpg
09:31 PM Tom_L: still better than what i would do
09:32 PM Tom_L: at least the weekend can end on a positive note for both of us
09:37 PM Tom_L: no pics on mine
09:37 PM Tom_L: input 3 parameters: circle radius, # of sides, Switch
09:38 PM Tom_L: switch flips between inscribed or circumscribed polygon
09:38 PM Tom_L: change parameters, drawing updates
09:38 PM Tom_L: inputs are limited to valid inputs
09:39 PM Tom_L: polygon min sides 3
09:39 PM Tom_L: radius >0
09:39 PM rue_mohr: :)
09:39 PM rue_mohr: so what macro you gonna make?
09:40 PM Tom_L: just a 'see if i could' thing
09:40 PM Tom_L: i didn't debug the icon thing yet
09:41 PM Tom_L: not exactly sure what that's supposed to do
10:46 PM Tom_L: still alive
10:46 PM rue_mohr: I'm going down
10:46 PM rue_mohr: slowly
10:46 PM Tom_L: i'm going down now
10:46 PM rue_mohr: https://i2.wp.com/2shemi.ru/wp-content/uploads/indukcion-heater-152.jpg
10:46 PM rue_mohr: I wanted to build that circuit today
10:46 PM rue_mohr: didn't get a chance
10:47 PM Tom_L: for what?
10:47 PM rue_mohr: experience
10:47 PM rue_mohr: I'd not got that type of thing to work with fets before
10:48 PM Tom_L: induction heater to do what?
10:48 PM Tom_L: like heat metal for heat treat?
10:49 PM rue_mohr: no, just as a power oscillator
10:49 PM Tom_L: the tool holders my kid uses at work, the tools are all friction held with an induction heater
10:49 PM Tom_L: i think they have to be for the rpm they run
10:49 PM rue_mohr: wow
10:50 PM Tom_L: 20k or more
10:51 PM Tom_L: https://www.amazon.com/Shrink-Fit-Machine-Frequency-Induction/dp/B084ZFHNY2
10:51 PM Tom_L: similar
10:52 PM rue_mohr: $3600! wow
10:53 PM Tom_L: https://hackaday.com/2020/10/26/simple-induction-heater-helps-with-homebrew-shrink-fitting/
10:53 PM rue_mohr: I suppose they can afford it
10:53 PM Tom_L: not quite as expensive
10:53 PM Tom_L: yeah
10:53 PM Tom_L: one slab of material he runs is $$$
10:54 PM Tom_L: i forget what he said but they're like 60 x 300 x 6" thick
10:55 PM Tom_L: all the parts he runs are crane loaded
10:56 PM Tom_L: you could probably make one similar to your spot welder
10:56 PM rue_mohr: yup
10:57 PM rue_mohr: everything designed by billot engineers
10:57 PM Tom_L: those end up being wing spars
11:00 PM Tom_L: i wonder what frequency they need to heat
11:02 PM Tom_L: anyway... gnite
11:12 PM rue_mohr: gngiht