#garfield Logs
Jan 12 2025
#garfield Calendar
10:08 AM aandrew: um, it's 1.12T. When I'd offered to share the whole thing the other day I thought that's what you were interested in
10:23 AM aandrew: just the electronics subdir is like 60G
10:53 AM aandrew: rue_shop2: https://mixdown.ca/dump/booklist.txt -- that's the full directory listing. You can use that to craft your .stignore file to grab what you're interested in
10:53 AM aandrew: polprog: you too, if you set up syncthing and give me your device ID I'll add you (and anyone else) to the share
10:56 AM polprog: i will but i dont have time right now
10:56 AM Tom_L: you must own a library :)
10:58 AM polprog: does syncthing make a full offline copy or requests the data as needed?
11:01 AM Tom_L: rue was concerned about space so it must make a full copy
11:02 AM aandrew: polprog: syncthing's goal is to synchronize shared folders, so a complete copy. it can do fancier stuff like keep the last 'x' changes to a file within a share or have "push only" shares but that's what it does in a nutshell
11:02 AM aandrew: I don't have a library but I am a bit of a data packrat
11:03 AM aandrew: I started using it to keep my projects folder sync'd across the laptop I usually work on, the workstation I sometimes work on and a file server whcih kept the last 5 changes to any file within the share (for those "oh shit" moments)
11:03 AM aandrew: I like that it can be set up to push the newest change first so if I'm working on one computer I can slide the chair over to the workbench and continue on another almost immediately
11:04 AM aandrew: it's not a backup tool but more of a distributed mirroring tool which is perfect for me
11:05 AM aandrew: then I use duplicity to actually do gpg-encrypted, incremental backups to whatever cloud service is cheapest (which right now is mega)
11:08 AM polprog: that sounds good
11:08 AM polprog: i need to prepare a drive then
11:08 AM polprog: how big are the subdirectories?
11:09 AM aandrew: the sizes are all in the list but you'd have to do some math. I can du -hs the toplevel ones in a bit
11:11 AM polprog: thanks
11:11 AM Tom_L: = alot
11:12 AM aandrew: polprog: https://pastebin.com/xUuEYpQT
11:20 AM polprog: half a terabyte
11:20 AM polprog: okay
11:20 AM polprog: ill see if i have time today to install this on my workstation
11:23 AM polprog: /dev/sda1 1,8T 1,5T 289G 84% /mnt/vault
11:23 AM polprog: 289G free on the data disk...
01:31 PM rue_mohr: yea, the program made a folder not on my data partition
01:32 PM aandrew: rue_mohr: when you accept the share you get to choose where to put it
01:32 PM rue_mohr: aandrew, oh, yea, I dont have that much room on that drive
01:33 PM rue_mohr: I might have missed that as I was acting fast to make sure it didn't time out
01:33 PM rue_mohr: sigh
01:33 PM rue_mohr: its probabbly filled the drive by now
01:33 PM aandrew: it won't time out, it'll keep bugging you until you decide to accept or ignore
01:33 PM rue_mohr: so, google says (take with salt) 54% of LA homes are rented
01:34 PM aandrew: interesting. I wonder where the stat came from
01:34 PM rue_mohr: so, most of the world is owned by 'land hoarders'
01:34 PM rue_mohr: and they rent out all their properties
01:34 PM rue_mohr: which is part of why there is a housing problem
01:34 PM rue_mohr: canada too
01:35 PM rue_mohr: I wonder who's losing more (not by %) from the fires
01:35 PM rue_mohr: the property values will plummet
01:37 PM aandrew: there's so much disinformation I'm seeing about this it's insane
01:37 PM rue_mohr: yea, I know eh?
02:22 PM rue_mohr: drat, I think my minipro burner has an error in the VPP table for the intel 2764 and might have fried 2 of my roms
02:38 PM Tom_L: fixable?
02:40 PM rue_mohr: the datasheet says NEVER APPLY MORE THAN 14V TO THE VPP PIN, the programmer used 18v
02:41 PM rue_mohr: I can manually specify the vpp
02:41 PM rue_mohr: but I think the chips are toast
02:43 PM polprog: something is wrong
02:43 PM polprog: i got one of the 8051s working for a very short time
02:44 PM rue_mohr: bad connection?
02:44 PM rue_mohr: you did install the reset circuit, right?
02:45 PM rue_mohr: give me the part number your using...
02:46 PM rue_mohr: I was only away 1 minute, where did you go?
02:47 PM polprog: gimem a sec
02:47 PM rue_mohr: I need some images of something
02:50 PM polprog: sorry i have a fuck ton of things to do at once
02:50 PM polprog: dad comes in wants me to pack up stuf
02:50 PM rue_mohr: yea, I'm not sure what site their on
02:50 PM rue_mohr: oh, is the town burning down?
02:51 PM rue_mohr: pack the 8051 and a camera
02:51 PM rue_mohr: connect with me at the airport
02:51 PM rue_mohr: oh wait, maybe its not a good idea to have a circuit board at an airport
02:51 PM rue_mohr: ugh
02:52 PM polprog: moment
02:52 PM polprog: mom wants me to pack some parcel to sell
02:52 PM polprog: so the thing is
02:52 PM rue_mohr: no, its hopeless, you have to run
02:52 PM polprog: this new power supply needs some more work, it falls into some oscillation
02:53 PM polprog: im using the old one and i cant get the 8051 to work on the xtal
02:53 PM rue_mohr: test the 8051 with usb power
02:53 PM polprog: no the old lab psu is OK
02:53 PM polprog: it worked for a brief moment on a signal generator
02:53 PM rue_mohr: yea, I need a photo of the pcb later
02:54 PM rue_mohr: :] I think you threw out my assembly guidelines
02:55 PM polprog: i got them all assembled except for the button
02:55 PM rue_mohr: is the reset cap atleast 1uF
02:55 PM rue_mohr: 1uF-4.7uF
02:55 PM polprog: yes
02:55 PM rue_mohr: hmm
02:55 PM polprog: it should be, i think i had 1u caps like that
02:55 PM rue_mohr: I need to know the chip part number
02:56 PM rue_mohr: I had a board that did not reset properly on its own because I used a 0.047uF
02:56 PM polprog: N87C51, intel
02:56 PM rue_mohr: I was going by capacitor volume
02:56 PM polprog: https://ibb.co/pKC3dbN https://ibb.co/4pqPyCG
02:56 PM rue_mohr: heh, its reprogrammable
02:57 PM polprog: nah, no window
02:57 PM rue_mohr: thats not eeprom?
02:57 PM polprog: im testing them by seeing if PSEN is moving
02:57 PM polprog: it is EPROM
02:57 PM rue_mohr: FA FB FC ?
02:57 PM rue_mohr: on the 8051
02:58 PM polprog: no marking like that
02:58 PM polprog: L6163350A
02:58 PM polprog: on the second line
02:58 PM rue_mohr: hmm
02:58 PM polprog: and third: "12.75 VPP", fourth : "(c)(m) 1980"
02:59 PM rue_mohr: huh
03:00 PM polprog: i will figure it out but not now
03:00 PM polprog: i gotta pack up to the ca trip
03:00 PM polprog: for the ca trip*
03:00 PM polprog: i gotta fix the signal gen, the potentiometers are bad
03:00 PM polprog: i gotta figure out whats wrong with the new PSU and i gotta find space for the rest of the kit
03:01 PM polprog: i rearranged the stuff a bit, the worktable has more space but i cant figure out where to put another siggen and a voltmeter
03:02 PM polprog: so i just wanted to repor that it worked for a short while
03:03 PM rue_mohr: I didn't connect pin 1, its vss on your chip
03:04 PM rue_mohr: I should have broken out the 4 NC pins
03:06 PM polprog: hmm this is important information..
03:06 PM rue_mohr: there are *minor* pinout differences between the chips
03:08 PM polprog: ill have to go throught the datasheet
03:09 PM rue_mohr: I did, thats all I see
03:09 PM rue_mohr: some 8051 have a pin for changing the RST polarity
03:09 PM rue_mohr: its kinda odd that its positive, but yea
03:09 PM polprog: hm, ill check that vss thing
03:17 PM rue_mohr: the flood almost right under pin 1 is ground
03:19 PM rue_mohr: I modified the readme in github
03:19 PM polprog: thanks
03:19 PM polprog: ill probably come back to that when im back home
03:20 PM rue_mohr: be aware too
03:20 PM polprog: im leaving on friday, gotta loads of stuff to do
03:20 PM polprog: maybe wed and thu will be easy on me
03:20 PM rue_mohr: the jumper under the 8051 allows you to unground /EA, so if you have a reprogrammable 8051 you can use it without the external rom
03:20 PM polprog: i should have tested that they all work
03:20 PM rue_mohr: not sure what the point of that would be
03:21 PM rue_mohr: they probably do
03:21 PM polprog: ill replace the 8051 on the other board that i could not get to work with a socket
03:21 PM rue_mohr: I'm pondering a rev2 pcb, but I really dont need it
03:21 PM rue_mohr: not sure on the crystal clearance for a socket
03:22 PM polprog: ill just tack it on if it doesnt fit..
03:22 PM rue_mohr: ...crystal on the back...
03:22 PM rue_mohr: ¯\_(ツ)_/¯
03:22 PM polprog: for example :)
03:23 PM rue_mohr: I used that style of crystal because I have a million of them
03:23 PM rue_mohr: wow, there is no room in that area
03:24 PM rue_mohr: ... pretty packed pcb
03:24 PM polprog: it is neat
03:24 PM polprog: ok, gotta go pack the clothes
03:24 PM rue_mohr: :] I hope to use some up this year
03:25 PM polprog: rues 8051 PLC
03:25 PM Tom_L: those are once and done right?
03:25 PM rue_mohr: I'm leaning towards using python and having serial IO via usb
03:25 PM rue_mohr: Tom_L, thats what this pcb is for
03:26 PM rue_mohr: it allows you to use the one-time-programmable chips with external program memory
03:26 PM rue_mohr: and I have TONNES of them
03:26 PM Tom_L: you have buckets of everything
03:27 PM rue_mohr: .... yea.....
03:27 PM rue_mohr: I want to start using up the buckets
03:28 PM rue_mohr: ugh, domain renewal season
03:30 PM rue_mohr: arg, must not start editing pcb now!!!
03:31 PM rue_mohr: I helped a chap out with an electronics project, have $60 to spend :]
03:31 PM rue_mohr: I keep getting cool things to play with
03:31 PM rue_mohr: I have a pi zero 2w with camera
03:31 PM polprog: neat
03:32 PM rue_mohr: an rp2040
03:32 PM polprog: the cameras are cool to play with
09:02 PM rue_mohr: hmm, I need to work out the point where a capacitor dropper supply is larger than a transformer supply
09:05 PM rue_mohr: oh I didn't check on the workstation, its probably dieing