#garfield Logs

Nov 16 2022

#garfield Calendar

01:55 AM rue_mohr: well the computer ma uses here is ill
02:04 AM rue_mohr: ill enough for my to try a complete linux upgrade on it
02:04 AM rue_mohr: its just a workstation nothing important on it anyhow
09:29 AM aandrew: rue_mohr: what's your take on giving her something like an rpi or equivalent SBC for the stuff she does
10:09 AM polprog: UPS battery is ded
10:09 AM polprog: bulgy
12:36 PM rue_mohr: no its a full on PC, she watches youtube straight when here
12:41 PM aandrew: rue_mohr: youtube, plex... works just fine with a little SBC. rpi or even banana pi would do it without issues. Not sure about 4k, but "regular" resolutions wouldn't be an issue
12:42 PM rue_mohr: the dual 1.3Ghz core machine is being pinned cpu use
12:42 PM aandrew: oh also don't know if I told you but I have a plex server (you can get a login from plex.tv for free) and if you share that username I can give you access to my library. of particular interest might be the youtube captures one
12:42 PM aandrew: rue_mohr: sounds like software video rendering in that case
12:42 PM aandrew: I should set up a test here and see
12:42 PM rue_mohr: I redid here account on the machine to make sure there was nothing funny going on
12:43 PM rue_mohr: firefox runs like 30 threads
12:43 PM rue_mohr: 4 of which work together to pin the dualcore cpu
12:43 PM aandrew: not sure what the equivalent on firfox is but you should be able to see what the browser can do with chrome://flags/#enable-accelerated-video-decode
12:45 PM aandrew: it does look like the browser support for rpi hardware accel is abysmal though
12:45 PM aandrew: chrome://gpu/ might be helpful too
12:46 PM rue_mohr: yea wasn't using chrome
12:46 PM rue_mohr: I could see if its doing better with it
12:47 PM aandrew: people are saying that the browser support is the culprit
12:47 PM aandrew: at least on rpi
12:47 PM aandrew: omxplayer can do h264 all day long at 1080p with almost zero CPU use
12:47 PM rue_mohr: yep
12:48 PM aandrew: I really like those tiny banana pi m2 zeros. even has 10/100 ethernet but you have to solder a connector, and the GPU seems supported
12:48 PM rue_mohr: its getting really frustrating to use the internet when everyone wants chrome only and 1024bit encryption using yesterdays latest cipher
12:48 PM aandrew: I wonder if opera or any of the "alternative" browsers does better
12:49 PM aandrew: https://forums.raspberrypi.com/viewtopic.php?t=302787#p1870744 has a bit of a summary of other people's struggles
12:50 PM aandrew: as of october 2021 rpi people claim it's all been fixed up now
12:50 PM rue_mohr: what is the latest pi?
12:51 PM rue_mohr: last time I tried to get one, the only ones that were available were the ones with the keybaord
12:51 PM rue_mohr: everything else was sold out everwhere
12:54 PM aandrew: rpi4 is the latest but all pis are unobtanium
12:54 PM aandrew: check out orange pi, banana pi... way cheaper and available
12:54 PM rue_mohr: oh my
12:54 PM rue_mohr: that guy is sending my a 4
12:55 PM rue_mohr: srry woke up just a bit ago
12:58 PM rue_mohr: polprog, Q31 and Q5 are probably clamping flyback
12:58 PM rue_mohr: aandrew, I have a lot of towers in 'stock'
01:06 PM aandrew: np, just thinking from a space and power savings angle
01:07 PM rue_mohr: ah
01:07 PM aandrew: I have been trying really hard to get rid of my old stuff because a) I rarely ever use it b) it's taking up a lot of space c) if I use it it takes a lot of power and d) I know it's still useful and it rubs me the wrong way to get rid of working stuff but a/b/c are all important too :-)
01:08 PM rue_mohr: yup
01:18 PM rue_mohr: twitter must have javascript that checks each character, as you type with a twitter server,
01:18 PM rue_mohr: and when they aren't responding its horrid
01:23 PM rue_mohr: ah, I think they check the whole text each time you type
01:24 PM rue_mohr: when I paste text I think its the same delay, but I'm just seeing it once
01:27 PM aandrew: yep I bet they do... the amount of network traffic some websites generate for no reason at all is insane
01:27 PM rue_mohr: have you seen any of that office software that queries everything from an SQL database, then filters and sorts it on the local workstation?
01:29 PM aandrew: ...no...
01:29 PM aandrew: I don't think I want to either... :-)
01:30 PM rue_mohr: know an admin who ran into two software packages doing it
01:32 PM aandrew: boggles the mind
01:32 PM rue_mohr: yep
01:33 PM rue_mohr: I have two monitors, every time chrome starts up, its 1 monitor to the left from where it was last closed
01:35 PM aandrew: it seems tht would only be a problem once
01:36 PM aandrew: start on right monitor. close. restart, it's now on left monitor
01:41 PM rue_mohr: then close, start and its off the edge of the left monitor
01:41 PM rue_mohr: so I need to make sure I drag it back to the right monitor each time I use it
01:41 PM rue_mohr: or I have to go fishing to get it back
01:42 PM rue_mohr: ok, well I filed a refund request for the CD4047
01:42 PM rue_mohr: all 20pcs were faulty
01:42 PM rue_mohr: that doesn't happen that often
01:46 PM aandrew: wow that sucks
01:47 PM rue_mohr: the next worst failure rate I had was with some fet drivers
01:48 PM rue_mohr: dont get cheap fet drivers from china
01:53 PM rue_mohr: so, did you guys dig out your platforms for counting gear teeth?
01:54 PM rue_mohr: I got the pi out and disconnected from the old project, and built a stand
01:54 PM rue_mohr: need to get the pi to boot...
01:55 PM rue_mohr: I realized to database the schemaitcs, I'd need to scan them all
01:55 PM rue_mohr: I have an HP multifunction, but ugh
01:56 PM rue_mohr: not sure how to access scans on it either
01:58 PM rue_mohr: there is another project too
01:58 PM rue_mohr: I'd like each STL I have to have an accompanying image
01:59 PM polprog: https://twitter.com/W1ngsD/status/1592939123673006080
01:59 PM polprog: thats an interesting solution to *preventing* flyback
01:59 PM rue_mohr: prevent damage
01:59 PM rue_mohr: clamp flyback
01:59 PM rue_mohr: its just current
01:59 PM polprog: yeah
01:59 PM rue_mohr: so you can short it
02:00 PM polprog: i bought an older APC500 than the schematic is for
02:00 PM polprog: So il need two new batteries
02:00 PM rue_mohr: I have 2500 stls
02:00 PM polprog: I wonder if i can connnect a larger battery by extending the cables
02:00 PM rue_mohr: ups are always free if you have a supply of batteries
02:00 PM rue_mohr: yes
02:01 PM polprog: i think i will do that then, gotta clamp on some car battery terminals
02:01 PM rue_mohr: I have a RS1200 hooked up to two 180Ah batteries
02:01 PM polprog: still will get 500-ish VA but for longer in case of power cuts
02:01 PM rue_mohr: ah
02:01 PM rue_mohr: be ware of this..
02:01 PM rue_mohr: the charge voltage for gels is different than for flooded
02:02 PM polprog: Ill have to check what was the OG one
02:02 PM polprog: but it was 13.8 charge voltage, maintenance less so gel
02:02 PM rue_mohr: If its a really smart ups, you can log in and adjust the charge voltage
02:02 PM rue_mohr: k
02:02 PM polprog: lol no, it doesnt even have rs232
02:02 PM rue_mohr: polprog, you gonna dig out your pi & camera?
02:03 PM polprog: i have it out but i have -1 time right now
02:03 PM rue_mohr: polprog, an APC?
02:03 PM polprog: uni work + thesis
02:03 PM rue_mohr: its got that 10 pin connector like a network jack
02:03 PM polprog: yeah the one i bought
02:03 PM rue_mohr: subtly 10 pins tho, not 8
02:03 PM polprog: that one is ancient cause it only has the power IO
02:04 PM polprog: the current one, "Ever" has USB comms but its only for monitoring and remotely shutting the PC down
02:04 PM polprog: https://allegrolokalnie.pl/oferta/ups-apc-back-ups
02:04 PM polprog: this one
02:04 PM polprog: is the one im getting
02:06 PM rue_mohr: well, anything is better than nothing
02:06 PM rue_mohr: the really smart ones are a pain in the ass anyhow
02:07 PM polprog: yeah, i need one for each router
02:07 PM rue_mohr: oh yea, the bottom doorflap
02:07 PM rue_mohr: if you have the lid off, pull the buzzer
02:07 PM polprog: lol
02:07 PM polprog: replace it with a led
02:07 PM rue_mohr: otherwise they beep when the power is out
02:08 PM rue_mohr: sure
02:08 PM rue_mohr: all of them cry when the power is out, which should be normal day-day for them
02:08 PM polprog: depends where you are
02:08 PM rue_mohr: I stand that the only time they should make noise is when the battery is almost dead
02:09 PM polprog: fair point
02:10 PM polprog: ill have to make up an extension strip with a C16 plug
02:10 PM rue_mohr: C16?
02:10 PM polprog: female computer plug
02:10 PM polprog: er
02:10 PM polprog: make
02:10 PM polprog: the kinda that plugs into that APC's output
02:10 PM rue_mohr: oh IEC
02:10 PM polprog: Therex C15 and C16
02:10 PM rue_mohr: what?
02:10 PM rue_mohr: on a 500?
02:11 PM polprog: IEC defines like 20 diff plugs, and these two are common
02:11 PM polprog: look at that link i posted
02:11 PM rue_mohr: they didn't just put a recpeticle on it?
02:11 PM polprog: nah, you get IEC extension cords
02:11 PM rue_mohr: I only saw the front image
02:11 PM rue_mohr: yea I have a few
02:11 PM polprog: there are more pics there
02:12 PM rue_mohr: it wont bring them up in my browser
02:12 PM rue_mohr: not sure why
02:12 PM polprog: https://a.allegroimg.com/original/1e43dd/78f557e14775a2d2a79734239132 fucken javascript
02:12 PM rue_mohr: wont scroll them either
02:12 PM polprog: this is the back
02:12 PM rue_mohr: wow
02:12 PM polprog: no comms, just a breaker and outlets
02:12 PM polprog: yeah it must be ancient
02:12 PM rue_mohr: nice
02:12 PM polprog: but i giess it will get the job done
02:13 PM polprog: ~10 US $
02:13 PM rue_mohr: the 500's here have a fixed input cord, and 120V standard plugs here
02:13 PM rue_mohr: I'd grab one but I'm freezing cold and dont want to leave the chair
02:13 PM polprog: i wonder what is the THD on the output sine
02:13 PM rue_mohr: I... have a UPS pile...
02:13 PM rue_mohr: its not true sine
02:14 PM rue_mohr: its simulated
02:14 PM rue_mohr: uh
02:14 PM rue_mohr: cant... ascii that...
02:14 PM polprog: The schematic has some antiparalell 2n2222 on the drive circuit for the power mosfet, maybe that makes it slightly more sine
02:14 PM rue_mohr: its ...
02:15 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1260797.jpg
02:15 PM rue_mohr: that
02:15 PM rue_mohr: times averaged out to make it sine equiv
02:16 PM rue_mohr: better for computer power supplies than for transformers
02:16 PM rue_mohr: as long as there is no PFC
02:17 PM polprog: switches can pretty much run on DC
02:17 PM rue_mohr: yes
02:17 PM polprog: tho some may need the 50hz for timing i guess
02:17 PM rue_mohr: no
02:18 PM polprog: hm right, i was thinking about something else
02:18 PM rue_mohr: usually rated like 45-65Hz 90-265V
02:18 PM rue_mohr: +- auto sensing
02:18 PM polprog: yeah
02:19 PM rue_mohr: transistor database
02:19 PM rue_mohr: and I should think about how to scan all the schematics
02:20 PM rue_mohr: might be worth figuring out the HP thing
02:20 PM rue_mohr: internal mail server for it to email them to?
02:27 PM polprog: what hp thing?
02:57 PM rue_mohr: oh multifunctions I have are HP
02:57 PM rue_mohr: when you scan a document, I'm not sure what the save/send options are
02:58 PM polprog: ah
02:58 PM polprog: maybe they allow for FTP
02:58 PM polprog: or just use some junk email on whatever
02:58 PM polprog: protonmail lets you set up a no bs email, just type the mail address and password, no phone numbers no nothing
02:58 PM polprog: although im not sure how it is with IMAP support
03:00 PM rue_mohr: I'm sure all the machines are running an internal mail server for logs I can leverage somehow
03:00 PM rue_mohr: you have mail!
03:00 PM rue_mohr: :/
03:00 PM polprog: yes, but its the old mail
03:00 PM polprog: not SMTP
03:00 PM polprog: the spool mail
03:00 PM rue_mohr: most.annoying.message.ever
03:00 PM polprog: DING
03:01 PM polprog: YOU VE GOT MAIL
03:01 PM rue_mohr: I was looking at how to turn that off
03:01 PM rue_mohr: I dont care if cron finished its job successfully
03:01 PM polprog: pipe all output to /dev/null
03:01 PM polprog: the mail is not generated if there is no output
03:02 PM rue_mohr: its built into bash
03:02 PM polprog: 2>&1 1>/dev/null
03:02 PM polprog: oh that
03:02 PM rue_mohr: yea
03:02 PM polprog: isnt it like in default .bashrc or .profile or whatever gets run
03:02 PM polprog: i think .profile cause bashrc is for non login shells
03:02 PM rue_mohr: its default on, I looked up how to turn it off and it didn't work
03:02 PM polprog: i need to clean the desk[s] to start a project
03:03 PM polprog: but i dont have enough time to clean the desks cause i need to clean the room first
03:03 PM polprog: i dont have enough time to do that cause i have uni crap and thesis
03:03 PM polprog: :< im stuck in a time loop
03:04 PM Tom_L: groundhog day
03:05 PM Tom_L: the movie
03:05 PM polprog: yeah
03:05 PM polprog: you know that one TV station here plays it non stop for all day long on april fools?
03:19 PM rue_mohr: sot he cardboard pcb
03:20 PM rue_mohr: so the cardboard pcb
03:20 PM rue_mohr: I was thinking
03:20 PM rue_mohr: if you drilled the holes, then looped the trace wire thru them
03:20 PM rue_mohr: you could use them as the vias to hold in the chip
03:20 PM rue_mohr: so all the traces first
03:28 PM rue_mohr: HP LaserJet 3390
03:28 PM polprog: bbl, supper
03:28 PM polprog: as for home UPSes: https://www.youtube.com/watch?v=RuEO17uvI8M
03:30 PM rue_mohr: lots of work for a sine wave eh?
03:31 PM rue_mohr: Total pages printed: 52353
03:32 PM rue_mohr: I got it used
03:32 PM rue_mohr: ADF pages scanned to host: 0
03:32 PM rue_mohr: Flatbed pages scanned to host: 0
03:32 PM rue_mohr: Hmmm
03:32 PM rue_mohr: how do I can to host
03:33 PM rue_mohr: maybe it needs USB to do it
03:37 PM rue_mohr: maybe its with the usb connection
03:50 PM polprog: mine HPLJ p1005 does not even have ethernet
03:50 PM polprog: only USB
03:50 PM polprog: dumb printer
03:50 PM polprog: but it wirks
03:50 PM polprog: works*
04:47 PM rue_mohr: this is a big office one
04:47 PM rue_mohr: I found an option, poorly documented, to have it save scans to an ftp server
04:47 PM rue_mohr: but its not comming up on the device when I "enable" it
04:49 PM polprog: https://www.youtube.com/watch?v=RuEO17uvI8M
04:49 PM polprog: oh i posted it
04:49 PM polprog: anyway, skip to +37:00 for fun content
04:50 PM rue_mohr: oh and halarious, chrome cant open an ftp URL
04:50 PM polprog: all major browsers dropped ftp support god knows why
04:50 PM polprog: use filezilla or MC
04:51 PM rue_mohr: hefty inverter all right
05:06 PM aandrew: rue_mohr: last post on that thread says as of nov 2022 (last week) 1080p30 fullscreen in chrome should be smooth and if it's not there's something wrong
05:29 PM rue_mohr: hmm
05:43 PM aandrew: yeah I kind of want to try now
05:55 PM rue_mohr: well the first step of the gear profiler is to get a platform out for it
11:02 PM rue_mohr: 3399..?
11:03 PM rue_mohr: huh
11:03 PM rue_mohr: its like 11 more every time I see it
11:33 PM rue_mohr: under twitter I'm definitly not getting as much done
11:33 PM rue_mohr: Tom_L, when do you figure I started playing with twitter?