#garfield Logs

Aug 09 2020

01:00 AM rue_mohr: er
01:06 AM rue_mohr: the service should only have one point ground to bond
01:06 AM rue_mohr: usually in the meter base or the first panel
01:06 AM zhanx_workshop: so run a new wire
01:06 AM rue_mohr: or you mean there is only a 2 wire to your shop?
01:06 AM zhanx_workshop: the shop wire is 14-3 but missing the ground for the 220v
01:06 AM rue_mohr: ...
01:06 AM rue_mohr: but 14/3 has a ground...
01:06 AM rue_mohr: they dont count it...
01:06 AM rue_mohr: unless its cabtire
01:06 AM zhanx_workshop: i thought that too
01:12 AM rue_mohr: hmm
01:12 AM rue_mohr: you could do a local ground, as long as its not neutral
01:12 AM rue_mohr: and call the whole thing isolated ground
01:12 AM zhanx_workshop: k
01:12 AM zhanx_workshop: i want to ground the building to a local ground with the new wire
01:12 AM rue_mohr: hmm,
01:12 AM rue_mohr: neutral and ground only connect at one point
01:12 AM rue_mohr: but isolated ground is just isolated
01:14 AM rue_mohr: I destroyed the chipper today
01:14 AM rue_mohr: broke one of the primary blades right off
01:14 AM rue_mohr: branch might have been a hair large
01:15 AM rue_mohr: never seen wood tear apart 1/4" steel
01:16 AM rue_mohr: took a bunch of stuff to e-waste
01:16 AM rue_mohr: did sprayer parts...
01:16 AM rue_mohr: got the power supply on its feet
01:16 AM rue_mohr: I need a 0.05 ohm resistor
01:17 AM rue_mohr: http://ruemohr.org/~ircjunk/tutorials/elex/cursense/main.html
01:17 AM rue_mohr: not implausable then
02:04 AM rue_mohr: I smell forest fire
02:04 AM rue_mohr: but the nearest one is far far away...
02:30 AM zhanx_workshop: reboot needed brb welding
03:18 AM polprog: rue_mohr: i put the opto there because I couldn't find a transistor in the parts tray
03:18 AM polprog: :P
03:19 AM polprog: all there were were big power transistors in to200
03:20 AM rue_shop1: its got one built in
03:20 AM rue_shop1: is the signal the wrong polarity?
03:21 AM rue_shop1: maybe, I suppose its usually /reset
03:21 AM polprog: yes, its high when the power is good
03:22 AM rue_shop1: my ZXCT1009 current sensor board is working :)
03:22 AM polprog: my initial idea was to pull up the power input and use the output to pull it down when power is good, but id need the other one for that
03:22 AM polprog: the one that is active low
03:22 AM rue_shop1: but to use it for my bench supply it needs to go before the regulating transistor,
03:22 AM polprog: nice
03:23 AM polprog: what will be the specs of the power supply?
03:23 AM rue_shop1: what if its only ground IS the output?
03:23 AM polprog: what?
03:23 AM rue_shop1: its a test power supply, laptop dc-dc max 19V 5A
03:23 AM polprog: thats a pretty okay range
03:23 AM rue_shop1: that might not work, the transistor would be wrong polarity
03:23 AM rue_shop1: only 1:30am and I cant think
03:23 AM rue_shop1: :(
03:24 AM rue_shop1: I need to go shopping tommorow
03:24 AM polprog: grocery?
03:24 AM rue_shop1: a bit, but I need concrete and a tarp
06:43 AM Tom_L: rue_shop1, maybe there was a rock in the bark you chipped
06:43 AM Tom_L: nail>
10:22 AM Tom_L: rue_shop1, can you find a definitive answer for the sherline spindle motor power?
10:22 AM Tom_L: i seem to find conflicting information
12:27 PM rue_mohr: no
12:27 PM rue_mohr: what conflict?
12:38 PM Tom_L: one place said 1/4hp another said 60w
12:39 PM Tom_L: https://www.robotshop.com/media/files/pdf/sherline-mill-lathe-specifications.pdf
12:39 PM Tom_L: i'm trying to establish a baseline so i know how much more hp i need for mine
12:39 PM Tom_L: sherline doesn't wanna say much about it
12:41 PM Tom_L: another place mentions 1/4 hp but i can't find it right now
12:41 PM Tom_L: 1/4 hp seems a bit more realistic
12:42 PM Tom_L: going to 1hp 750w may be enough for me instead of the 1.2kw one
12:44 PM rue_mohr: ippo:/tmp# units 0.25hp watts
12:44 PM rue_mohr: * 186.42497
12:45 PM Tom_L: yeah
12:45 PM rue_mohr: I thought you had current/voltage meters on yours
12:45 PM Tom_L: i'm just trying to verify which one is correct
12:45 PM rue_mohr: ~80% of whatever electrical power is going in
12:45 PM Tom_L: if that's the case the 750w one would be plenty
12:45 PM Tom_L: but i'm only gonna do this once
12:46 PM Tom_L: and i'd like to get it right
12:46 PM rue_mohr: yea
12:46 PM rue_mohr: I wanted a 1HP 3 phase and inverter for my lathe
12:46 PM rue_mohr: $$$$ maybe not
12:46 PM Tom_L: that's what i'm looking at
12:46 PM Tom_L: bldc 1hp
12:47 PM Tom_L: or the larger one
12:47 PM Tom_L: would it be electrically possible to use the same motor and a different driver to get the additonal difference between the 750 and 1.2kw one?
12:47 PM Tom_L: i'm trying to figure out if that's what they're doing
12:48 PM Tom_L: one driver is 110v the other is 220v
12:49 PM Tom_L: rue_mohr, you can get cheap ones off ali
12:49 PM Tom_L: you would know more about those than me
12:50 PM Tom_L: i would over spec it if it's chinese
12:50 PM rue_mohr: I looked, over my budget
12:50 PM rue_mohr: yea
12:51 PM Tom_L: when opportunity presents itself here i wanna be ready to seize it budget wise
12:52 PM Tom_L: or someone else here will :)
12:59 PM Tom_L: at the momemnt anyway i'm more inclined to get the smaller one so i don't have to wire 220v in
01:05 PM Tom_L: rue_mohr, what motor do you have on your lathe?
01:06 PM rue_mohr: hmm
01:06 PM rue_mohr: single phase induction...
01:06 PM Tom_L: you were wanting to change it?
01:07 PM rue_shop1: oh, heh, aparently 1HP
01:07 PM rue_shop1: yea, but not for a lot of budget
01:11 PM Tom_L: i never have much of one
02:51 PM rue_shop2: building supplies store isn't open today
02:51 PM rue_shop2: back in the early 90's they used to be closed on sunday
02:52 PM Tom_L: nothing used to be open on Sunday
03:08 PM KitchenMoon: Dont disrespect the sabbath ;)
03:15 PM KitchenMoon: relax guys... I'm kidding
03:15 PM KitchenMoon: Mostly...
03:55 PM KitchenMoon: https://www.youtube.com/watch?v=iX-QaNzd-0Y
04:32 PM polprog: ok, great
04:33 PM polprog: the dos machine is up
04:33 PM polprog: even managed to write a pal file that compiles
04:46 PM Tom_L: 6.22?
04:46 PM Tom_L: what compiler?
04:51 PM polprog: 6.22, the PALASM compiler
04:54 PM Tom_L: i did a little asm in dos
04:55 PM Tom_L: some int 21h stuff
05:14 PM polprog: rue_shop2: i made a rocker
05:16 PM rue_mohr: oh where image!\
05:18 PM polprog: https://polprog.net/rozne1/ircjunk/various/polprogrock.jpg
05:18 PM polprog: i was looking for a rock outside on the walk
05:19 PM polprog: but i found one that was okay behind the oscilloscope..
05:31 PM polprog: rue_mohr: ping
05:35 PM rue_mohr: hi
05:35 PM KitchenMoon: phi
05:35 PM polprog: cos(phi)
05:35 PM KitchenMoon: :)
05:35 PM polprog: evening moon
05:35 PM polprog: what are you doing in the kitchen?
05:35 PM KitchenMoon: evening :D
05:36 PM polprog: and whose kitchen is that
05:36 PM KitchenMoon: Drinking tea
05:36 PM KitchenMoon: mine.
05:36 PM KitchenMoon: not rue's :P
05:36 PM polprog: im drinking tea too ;)
05:36 PM KitchenMoon: what kind?
05:36 PM polprog: just earl grey
05:37 PM KitchenMoon: milk too?
05:37 PM polprog: no, but i had some in the UK
05:37 PM polprog: it was okay
05:37 PM KitchenMoon: i like milk and honey in black tea
05:37 PM KitchenMoon: i got green today
05:37 PM polprog: havent had milk and honey
05:38 PM polprog: ive got 20oz of this tea. i think ill go and put some milk and honey in
05:38 PM KitchenMoon: yeah :)
05:39 PM rue_mohr: http://ruemohr.org/~ircjunk/rockers/rockers.html
05:39 PM rue_mohr: might have to reload
05:40 PM KitchenMoon: whats with the rocks?
05:41 PM rue_mohr: people who do stuff prove it via the simple task of finding a rock, drawing eyes on it, taking a picture and posting it
05:41 PM rue_mohr: I was having a problem in #robotics
05:42 PM rue_mohr: with people who wanted all sorts of help with things, but them wouldn't lift a finger to do anything
05:42 PM KitchenMoon: ? people saying you didnt do what you posted?
05:42 PM rue_mohr: so I said, if they wanted help, they had to do that first
05:42 PM KitchenMoon: oh?
05:42 PM rue_mohr: it saved me a GOD AWEFULL LOT of time
05:42 PM rue_mohr: most of the main group of us did it to give it some inertia
05:42 PM polprog: haha
05:43 PM KitchenMoon: rue come over and build me a particle accelerator while i sit around.
05:43 PM rue_mohr: heh
05:43 PM rue_mohr: cant get myself working on the power supply
05:43 PM * polprog drops off a truckload of CRTs at KitchenMoon's shop
05:43 PM rue_mohr: the fire isn't catching
05:43 PM KitchenMoon: :P
05:44 PM KitchenMoon: rue traced something good for me on a CRT last night
05:44 PM rue_mohr: KitchenMoon, last night I smelled forrest fire, did you?
05:44 PM polprog: hmm. Error: milk stock level zero. Warning: honey stock level low. Task 001/10.08.20 finished with 1 err 1 warn
05:44 PM KitchenMoon: he found me a video input
05:44 PM rue_mohr: KitchenMoon, did it work?
05:44 PM polprog: what was it
05:44 PM KitchenMoon: yes :D
05:44 PM rue_mohr: oh cool
05:45 PM KitchenMoon: small 6" screen for a security system
05:45 PM rue_mohr: so now you can re-arrange the traces and route it to that connector
05:45 PM polprog: hmm. with honey it tastes different than with plan sugar..
05:45 PM polprog: good. ill have to buy milk and honey tomorrow
05:45 PM rue_mohr: and, one side of the volume pot will work as an audio input
05:45 PM KitchenMoon: yeah nectar of the GODS
05:45 PM KitchenMoon: oh yeah?
05:45 PM polprog: what are you using that cctv CRT for?
05:46 PM rue_mohr: Audio in ---\/\/\[audio out]/\/\/\--gnd
05:46 PM KitchenMoon: my kid wanted to play GAMES ON IT :/
05:46 PM polprog: good
05:46 PM rue_mohr: KitchenMoon, make sense?
05:46 PM KitchenMoon: oh rue_mohr gotcha
05:46 PM KitchenMoon: pot sits behind amp? rue_mohr
05:46 PM rue_mohr: yea
05:47 PM KitchenMoon: ok I follow
05:47 PM rue_mohr: the tap goes to the amp input, so catch it on the non-grounded side of the volume
05:47 PM polprog: i ordered 16v8 and 20v8 GALs
05:47 PM rue_mohr: old guy taught me that
05:47 PM rue_mohr: polprog, ok, I need to try that image
05:47 PM rue_mohr: what do I use to unpack it?
05:47 PM Tom_L: old guys rock
05:48 PM KitchenMoon: yes
05:48 PM rue_mohr: I think the ASA is working, I'm waking back up
05:48 PM polprog: i think your best way is to use `qemu-img convert -f vdi -O raw xyzzy.vdi doodad.img`
05:48 PM polprog: it should be 32MiB
05:49 PM polprog: iirc, or 64
05:49 PM polprog: power of 2 anyway
05:50 PM polprog: if i wasnt away id have done that in qemu on raw images directly, but qemu on windows is command line only, and comand line on windows is... you know
05:51 PM polprog: btw, i think PALASM messes up the pin declarations on startup
05:51 PM polprog: s/startup/default template file/
05:52 PM polprog: as in, https://polprog.net/rozne1/ircjunk/gal/palasm.jpg in the pin declaration section theres a syntax error
06:03 PM rue_mohr: let me see if I can get the image to boot
06:03 PM rue_mohr: I'll have to figure out how to sys it
06:04 PM polprog: you dont need to sys it
06:04 PM polprog: just dd if to a drive
06:04 PM polprog: its bootable
06:05 PM rue_mohr: lets see how well it unpacks
06:06 PM polprog: you will want to replace the default editor
06:06 PM polprog: to edit.exe
06:09 PM rue_mohr: hmm
06:10 PM rue_mohr: I'd like to take a look at the files, but its got the partition table in there...
06:10 PM polprog: loop device?
06:12 PM rue_mohr: not wo a filesystem tho
06:13 PM polprog: i think losetup has a flag for running a partscan and setting up loopXpY devices
06:16 PM rue_mohr: 100M
06:16 PM rue_mohr: I might have a 128M CF
06:18 PM polprog: what does it say on boot?
06:18 PM polprog: did you get a bootmenu?
06:18 PM polprog: i dont remember whoch version is on the server... both work but id like to know
06:18 PM rue_mohr: I'm still working on a disk, dont have a machine yet
06:19 PM polprog: i cant add it to vbox because of a GUID conflict
06:19 PM polprog: wait, i can run it on qemu
06:19 PM polprog: nvm
06:19 PM polprog: ok, good
06:19 PM polprog: its the nwe version
06:20 PM rue_mohr: writing CF....
06:21 PM polprog: http://www.texteditors.org/cgi-bin/wiki.pl?T
06:21 PM polprog: ok, so it has the default editor ive never heard about
06:21 PM polprog: http://www.texteditors.org/cgi-bin/wiki.pl?T
06:21 PM polprog: i dont know how to use it, rip
06:25 PM polprog: oh, its funny
06:26 PM polprog: pressing esc goes to the edit field
06:26 PM polprog: its in overwrite mode by default
06:26 PM polprog: haha, what a weird contraption
06:36 PM polprog: allright, i have to get up in 5 hours
06:36 PM polprog: goodnight
06:37 PM polprog: say when you get it working
06:53 PM rue_mohr: the image is written, working from there...
06:55 PM rue_mohr: odd, where is the dos directory...
07:08 PM rue_mohr: CF mounted, browsing files
07:09 PM rue_mohr: heh, the pdfs aren't pdfs
07:14 PM rue_mohr: interesting
07:33 PM Tom_L: any reason to save rusty discs anymore?
07:33 PM Tom_L: found a box full rumaging thru some junk
08:22 PM ShopMoon: Who the beans was Chloe?
08:23 PM Tom_L: hand you been quicker you could have asked?
08:23 PM ShopMoon: if only i hand :|
08:23 PM Tom_L: you had a whole 18 sec to respond!!!
08:23 PM Tom_L: dammit!
08:23 PM ShopMoon: yeah !
08:44 PM rue_shop1: discs?
08:44 PM rue_shop1: cant get the MCP4725 DAC to work
08:46 PM cheesemaster648: hmmm garf indeed
08:47 PM rue_shop1: ?
08:48 PM ShopMoon: sevenohseven: hay
08:48 PM ShopMoon: Chloe?
08:49 PM rue_shop1: mcp4725_fastSleep500kPD
08:49 PM rue_shop1: #define mcp4725_fastSleep500kPD (3<<4)
08:50 PM sevenohseven: hi!
08:50 PM ShopMoon: hi
08:51 PM ShopMoon: I like your web page, its like the pages I make :P
08:51 PM sevenohseven: how do u know about my webpage?
08:52 PM ShopMoon: I saw you pop in and aout a moment ago, I took a sweep at your ip
08:52 PM sevenohseven: oh
08:53 PM ShopMoon: when did you write that, the early 90's ?
08:53 PM sevenohseven: its got a 90s asthetic.
08:53 PM rue_shop1: dude
08:53 PM rue_shop1: "updated 2020"
08:53 PM ShopMoon: yeah and bonzai buddy XD
08:54 PM ShopMoon: i remeber that little basterd from grade 6
08:54 PM ShopMoon: sevenohseven: so what brings you round here?
08:55 PM sevenohseven: nothing much, first time i have used irc
08:55 PM rue_shop1: hmm how many pairs of sunglasses can a gorilla keep in its ass anyhow?
08:55 PM rue_shop1: I'm trying to code....
08:56 PM sevenohseven: oh
08:56 PM rue_shop1: I didn't make a mistake, its not working...
08:56 PM rue_shop1: :/
08:56 PM ShopMoon: the first time?
08:56 PM ShopMoon: ever?
08:57 PM sevenohseven: yup
08:57 PM ShopMoon: wow, welcome
08:57 PM sevenohseven: =)
08:58 PM ShopMoon: so you like programming? tell us a bit about yourself.
08:59 PM ShopMoon: people say i'm too agressive :/
09:07 PM rue_shop1: it might not have been you
09:08 PM rue_shop1: they might have died of covid
09:08 PM rue_shop1: or an ammonia-nitrate explosion
09:08 PM rue_shop1: or a trump policy
09:09 PM rue_shop1: got it
09:09 PM rue_shop1: no idea what I did wrong
09:09 PM ShopMoon: ha
09:10 PM rue_shop1: important thing is that its working
09:10 PM rue_shop1: so
09:15 PM Tom_L: floppies
09:15 PM Tom_L: maybe i could sell em on ebay as memoribilia
09:16 PM Tom_L: found out the 1.2 driver comes in 120 and 220v
09:17 PM Tom_L: i thought it was 220 onl
09:17 PM Tom_L: y
09:19 PM rue_shop1: should I set up a DAC with an encoder interface or an encoder that drives a DAC
09:20 PM rue_shop1: Tom_L, lots of retro people seeking floppies these days
09:20 PM Tom_L: trouble is, i dunno what's on em
09:20 PM rue_shop1: whatever
09:20 PM rue_shop1: anythng you think your worried about?
09:21 PM Tom_L: whatever was on them then probably isn't important now
09:21 PM Tom_L: btw, all those hdd you melted down... are the platters aluminum too?
09:22 PM rue_shop1: ...
09:22 PM rue_shop1: something funny
09:22 PM rue_shop1: but the plating on them makes them useless to melt down
09:23 PM Tom_L: kinda like melting alum cans
09:28 PM rue_shop1: yes and no
09:28 PM rue_shop1: aluminum cans just all turn to oxide
09:28 PM rue_shop1: too thin
09:28 PM rue_shop1: the platters are like a thin sheet of alum thats wrapped in chromium
09:29 PM Tom_L: i just didn't know if they were alum or glass of some sort
09:29 PM Tom_L: alum has a lot more thermal expansion than glass
09:30 PM rue_shop1: some are glass, most alum
09:30 PM rue_shop1: but the alum ones are really strange
09:30 PM rue_shop1: its crystalized or soemthing
09:30 PM rue_shop1: if you bend them, they feel quite strange as the crystals / layers give
09:30 PM Tom_L: like bending a cd?
09:31 PM Tom_L: you can hear it crinkle
09:34 PM rue_shop1: no
09:34 PM rue_shop1: it gives in intermittent events...
09:58 PM rue_shop2: odd tho, its taking about 42ms to write a value
09:59 PM Tom_L: PAL?
10:00 PM rue_shop2: no its written by a timy13
10:00 PM rue_shop2: to an i2c DAC
10:00 PM Tom_L: oh
10:01 PM Tom_L: rue_shop2, you know much about bldc motors?
10:01 PM Tom_L: do you need to brake before reversing?
10:01 PM rue_shop2: the controlers do compelx stuff
10:01 PM Tom_L: will reverse just cram it into reverse or will it ramp?
10:01 PM rue_shop2: the controller usually has full protection from everything
10:02 PM Tom_L: yeah it's got an internal brake resistor but you can add an external one
10:02 PM Tom_L: maybe this will be a bday present to me
10:02 PM Tom_L: i doubt i can pull that off
10:02 PM rue_shop2: datasheet says it should take like 4us
10:02 PM Tom_L: why the slow down?
10:02 PM rue_shop2: yea
10:02 PM rue_shop2: why
10:03 PM rue_shop2: 42ms is a long time
10:03 PM rue_shop2: damnit I ahve to eat the food
10:08 PM zhanx_workshop: ok first my welding mask doesn't auto dim and then my leather apron broke
10:09 PM rue_mohr: yike
10:09 PM Tom_L: that kinda sucks
10:09 PM zhanx_workshop: i am seeing spots still
10:09 PM rue_mohr: always test! like I dont...
10:10 PM zhanx_workshop: i did
10:10 PM zhanx_workshop: the test worked it blacked out
10:10 PM rue_mohr: ?
10:10 PM zhanx_workshop: but it failed me
10:10 PM zhanx_workshop: the autodim has a test button
10:10 PM rue_mohr: maybe sit it in the sun a while to charge the battery back up?
10:11 PM rue_mohr: how old is it?
10:11 PM rue_mohr: after about 5 years the battery is shot
10:11 PM zhanx_workshop: or the heat killed the batteries
10:11 PM zhanx_workshop: new old stock maybe
10:11 PM zhanx_workshop: had it 5 weeks now
10:11 PM rue_mohr: eek
10:13 PM zhanx_workshop: i will let is attempt to charge
10:17 PM zhanx_workshop: you know i changed all the lights in the shop to led
10:17 PM rue_mohr: k
10:18 PM zhanx_workshop: they dont put out enough to charge the mask
10:18 PM rue_mohr: no you have to leave it in bright sun
10:18 PM zhanx_workshop: which i didn't
10:19 PM zhanx_workshop: i've been covering it after use with a clean rag to keep the lens dust free
10:20 PM zhanx_workshop: i knew today was gonna suck. my drone came in and its windy for the first time in weeks
10:35 PM rue_mohr: hah
10:35 PM rue_mohr: oh dear, carefull with the mask then eh?
10:35 PM rue_mohr: that always spooks me about lcd masks
10:35 PM rue_mohr: I'v seen a few fail
10:36 PM Tom_L: i never leave mine out and it just works
10:36 PM Tom_L: usually stored in a dark room
10:36 PM rue_mohr: I give mine a chance to recover every so often
10:36 PM rue_mohr: Tom_L, does yours have a replacable battery?
10:37 PM rue_mohr: I cant remember if the one I have now does or not
10:37 PM Tom_L: i dunno, i don't think so
10:37 PM Tom_L: it's fairly old and i've never done anything with it
10:37 PM Tom_L: i just got the glass cause i have a couple helmets already
10:38 PM rue_mohr: I have a few passive masks, I like the colour better
10:38 PM rue_mohr: but on and off and on and off
10:45 PM rue_shop1: oh funny
10:45 PM rue_shop1: there is a bug in the flurry library
10:45 PM rue_shop1: the delay accidently changes depending on the data being sent
10:46 PM Tom_L: one of mine has a hinge on the glass
10:48 PM rue_shop1: yea this one uses two AAA batteries
10:49 PM rue_shop1: ok
10:49 PM rue_shop1: so
10:50 PM rue_shop1: do I make an encoder controlled DAC or a encoder that controls a DAC
10:51 PM rue_shop1: I think a DAC with encoder control
10:51 PM zhanx_workshop: careful with the mask is an understatement
10:51 PM rue_shop1: zhanx_workshop, I test by pointing it into the sun
10:51 PM rue_shop1: dont need to know if the test button works
10:59 PM rue_mohr: zhanx_workshop, how bad was the flash that hit ya?
10:59 PM rue_mohr: I presume pretty short
10:59 PM rue_mohr: and partially shaded from the static shades in it
11:02 PM zhanx_workshop: i am fine now but i was blinded pretty gppd
11:02 PM zhanx_workshop: good
11:02 PM zhanx_workshop: left eye is a bit funky still
11:08 PM rue_mohr: was it only a quick flash?
11:08 PM rue_mohr: dont get blinded now
11:09 PM zhanx_workshop: i am fine it was a quick flash but i was looking right at it. i will be fine