#garfield Logs

Sep 30 2020

12:14 AM rue_bed: drat, I forgot to try out the new php script on the jukebox today
12:20 AM rue_bed: helped ma a bit and got some more rocks set on the pillars
12:20 AM rue_bed: almost finished the thing for work
04:15 AM polprog: fixin-a the pcb
04:37 AM polprog: https://polprog.net/rozne1/ircjunk/various/fpmistake.png
04:38 AM polprog: penalty for being a muppet who cant rotate a pinout drawin in his head
09:22 AM rue_mohr: mount the chip to the other side of the board via vias?
09:34 AM polprog: heh, its worse
09:34 AM polprog: https://polprog.net/rozne1/ircjunk/various/rak_rev3.jpg
09:34 AM polprog: the top pins are not symmetrical
09:35 AM rue_mohr: oooh
09:35 AM polprog: ill just mount the chip on a rasterboard to see if i can program it
09:35 AM rue_mohr: temperature board?
09:35 AM polprog: not gonna sit around for a week doing nothing
09:35 AM polprog: no, "cpu" board
09:35 AM polprog: its a lora module with an eprom
09:35 AM rue_mohr: ah
09:36 AM polprog: i tried to see if anyone makes i2c-eprom footprint compatible temp sensors though
09:36 AM polprog: thats why there are so many jumpers, you can place a 24Lxx eeprom or a 47Lxx eeram there
09:39 AM polprog: hmm, ill have to mount an LD1117, a pin header and the module on the raster board
09:39 AM polprog: the module pitch is tiny.. 1mm iirc
09:39 AM polprog: gonna have to jumper it
09:40 AM polprog: or, i know, ill cut out just the footprint from the bad PCB
09:40 AM polprog: i need to fix my handsaw
09:58 AM rue_mohr: so, they are reducing garbage pickup here to every second week,
10:00 AM rue_mohr: might need to make a bag for the boiler
10:00 AM rue_mohr: which means I should put a thermal sensor on the boiler for detecting 'running'
11:12 AM Tom_L: they realize that won't eliminate trash don't they?
11:26 AM aandrew: 8mm thick brass tube? that's quite thick for sure
11:28 AM aandrew: heh so I have two PLCs I found in the trash, one's an ABB PM564 with an analog I/O module and the other is a little Siemens S7-1200. both can do ethernet, neither can do devicenet, although the siemens apparenly can do damn near anything ethernet, including Ethernet/IP
11:28 AM aandrew: just trying to download the software and cracks for them now
11:28 AM aandrew: fuck I hate PLCs
11:30 AM aandrew: although I think I might be able to fudge enough with my own devicenet library to do scanning
11:30 AM aandrew: (the "master" side of devicenet)
02:11 PM polprog: https://polprog.net/rozne1/ircjunk/various/rakassy.jpg
02:47 PM aandrew: well so far these 3.5" ATA HDDs are not working out too great
02:47 PM aandrew: 4/6 are dead
02:47 PM aandrew: not exactly unexpected
02:47 PM aandrew: I have some really old 6.4GB ones too I have yet to test
02:47 PM aandrew: kind of working my way down the sizes
02:48 PM aandrew: 1.5T to 250G (where I am now) to 80G, then 30 then 6
02:48 PM aandrew: I even have some IBM Deathstar drives, I am pretty sure those are from my old media server where I ended up having half my MP3 collection corrupted in interesting ways due to TCQ
03:56 PM polprog: TCQ?
04:17 PM aandrew: tagged command queueing, the DeathStar drives had a bad implementation that caused data corruption
04:19 PM polprog: ah
04:24 PM polprog: i put together a module breakout that will have to make do for the time the fixed boards are being fabbed
04:24 PM polprog: what do you think?
06:24 PM aandrew: final tally of the 3.5" drives: 11 dead, 7 need to be erased, 3 I need to keep and get data off of, then erase
06:24 PM aandrew: so a 50% failure rate on drives from 8-20y old
06:25 PM aandrew: both deathstar drives are dead dead now too
06:25 PM aandrew: hard to say anything about the breakout I haven't seen :-)
07:00 PM rue_mohr: 1000mins thats a record low for the twitter window
07:03 PM rue_mohr: and you cant store a Western Digital drive, they magnetics on the platter give out
07:03 PM rue_mohr: after about 2 years, cant even load their own firmware
07:03 PM rue_mohr: I have a number of drives that were put away *working*
07:03 PM rue_mohr: regarded them as backups
07:04 PM rue_mohr: *nope!*
07:18 PM aandrew: rue_mohr: not from what I just did
07:19 PM aandrew: you of course can't rely on spinning rust, but even one of the 20yo 6.4G maxtors spun up and was readable
07:20 PM aandrew: the WD drives I have are all in the 8-12yo range, maybe some a little older. some were dead, but by far the most dead drives I ahve are Maxtors
07:20 PM aandrew: however that's unfair, becuase most of the drives I have are maxtors to begin with. the 250G WDs which are 13yo worked just fine though
07:22 PM aandrew: for *cheap* backups I think you're likely best with good quality DVDR media, stored nicely, and for bulk storage it's likely duplicates of SSDs, MAYBE spinning rust
07:22 PM aandrew: I mean SSDs are just low leakage capacitors at the end of the day, but SLC and good quality is probably safest
07:23 PM aandrew: spinning rust has just too many failure modes (motors, bearings, heads, shock, platters, electronics) where SSD is just electronics
08:13 PM rue_mohr: I think the WDs I had were only out of service for like 4 years
08:13 PM rue_mohr: I went to re-use one, compeltely dead
08:13 PM rue_mohr: and it had been fine
08:13 PM rue_mohr: I upgraded it for space
08:14 PM Tom_L: i suppose the same goes for tape backups
08:21 PM rue_shop1: na, they would last forever
08:22 PM rue_shop1: its something about WD
08:22 PM rue_shop1: the data on the platter just degrades really fast if its not running
08:23 PM rue_shop1: oh concrete
08:23 PM rue_shop1: *sigh*
08:28 PM Tom_L: guy never replied to my email
08:28 PM Tom_L: he was slow to reply before though
08:44 PM Tom_L: why do norwegians put barcodes on all their ships?
08:45 PM Tom_L: so when they dock they can scandinavian
08:56 PM aandrew: yeah I have less luck with tape
08:56 PM aandrew: although it's usually the drives
09:05 PM aandrew: so I had forgotten that CVS' history is not stored along with teh files
09:14 PM aandrew: and I spent a good portion scouring these drives for the fucking CVSROOT directory
09:14 PM aandrew: thankfully I found it
09:14 PM aandrew: I rather like having source history
09:32 PM rue_shop1: oh I remember sourcesafe
09:32 PM rue_shop1: the most dangerous place to have your project on delivery night
10:20 PM aandrew: I thought that was a 2yo WD HDD. :-)
10:34 PM rue_mohr: ok the new laptop arrived
10:35 PM rue_mohr: wow what a lot of stuff when you give it internet access
10:35 PM rue_mohr: does windows technically fit the definition of a trojon?
11:43 PM rue_mohr: well, its a nicer laptop than the image made it out to be
11:43 PM rue_mohr: I can still see the lines