#garfield Logs

Nov 12 2022

02:36 AM rue_shop1: its kinda been a year for circuits
02:45 AM rue_shop1: mostly power converters
03:41 AM rue_mohr: ARG, I'm going thru old photos, I started that injection molder in 2018
03:44 AM rue_mohr: EEE GAD, if this was 4 years ago, whats happened since!?
03:44 AM rue_mohr: the vibration finisher? 2018 :/
10:01 AM aandrew: hm
10:01 AM aandrew: https://www.giangrandi.ch/electronics/crystalfilters/xtalintro.html
10:01 AM aandrew: I don't know if crystal filters can be "pulled" that far off center
02:53 PM rue_mohr: aandrew, NE602
04:48 PM Tom_L: need a psu switch for a lexmark 2390 printer
04:48 PM Tom_L: psu is $25 but i don't think it's bad
05:04 PM Tom_L: nevermind. i'll fix the swithch :)_
05:04 PM Tom_L: good thing about old equipment... it comes apart
05:12 PM Tom_L: fixed
06:08 PM rue_mohr: :)
06:26 PM Tom_L: well it beeped ok but the switch is worn out
06:26 PM Tom_L: contacts shot
06:31 PM Tom_L: too intermitten to be a reliable switch
06:31 PM Tom_L: now maybe i'll go screw up those parts i made the other day
06:42 PM rue_mohr: is it just one of those mini rockers?
07:17 PM rue_shop3: working on borring those toothed pullies
07:17 PM rue_shop3: my lathe chuck seems more off than normal
07:17 PM rue_shop3: usually its 2 sheets of paper under 1 jaw, and 2 under the other
07:19 PM rue_shop3: I wonder if I should get some kinda stone and grind the jaws even
07:21 PM rue_shop3: oh this edge is eccentric by 0.2mm
07:22 PM rue_shop3: nowonder I'm needing so many bits of paper
07:23 PM Tom_L: rue_shop3,
07:24 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/coupler/Coupler_brass5.jpg
07:24 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/coupler/Coupler_brass6.jpg
07:25 PM Tom_L: cutting them off on their side worked alot better
07:25 PM Tom_L: cut halfway down, flip so i can grip the part then trim the other half off
07:27 PM rue_shop3: this is stupid, I should just use the 4jaw
07:27 PM rue_shop3: :) nice
07:28 PM rue_shop3: how did you grab it to cut deep enough?
07:28 PM Tom_L: sideways
07:28 PM rue_shop3: there's not a lot of edge there to grab it by
07:28 PM Tom_L: turned them facing sideways and gripped about .125" of the stock
07:28 PM Tom_L: enough
07:28 PM rue_shop3: cool
07:29 PM Tom_L: then flipped it 180 and took the bottom half off
07:29 PM rue_shop3: I hate changing the jaws
07:29 PM rue_shop3: I wish the shims would behave
07:29 PM Tom_L: the switch is a rocker yes
07:30 PM Tom_L: mounted to the pcb and that's all that holds it in the printer
07:30 PM rue_shop3: oh I was deforming the ring a bit, that probably didn'thelp
07:30 PM rue_shop3: oh pcb mount
07:30 PM rue_shop3: right angle pins?
07:30 PM Tom_L: yeah
07:31 PM Tom_L: https://www.getthatpart.com/Lexmark-2391-2390-110V-Low-Voltage-Main-Power-Supply-1333242.html
07:31 PM Tom_L: zoom in on that
07:32 PM Tom_L: i can take it apart without disassembling the printer
07:32 PM Tom_L: with 2 exacto knives
07:33 PM Tom_L: it was dirty and pitted so i cleaned it and filed the contacts a tiny bit but no go
07:33 PM rue_shop3: think you will need a new switch in about a month?
07:33 PM rue_shop3: its a 4 lead switch with wide ribbon wires?
07:33 PM Tom_L: i got a used psu coming
07:33 PM rue_shop3: oh
07:33 PM rue_shop3: think you will need a new switch in about a month?
07:33 PM rue_shop3: heh
07:33 PM Tom_L: i dunno
07:34 PM Tom_L: i have 2 of these printers both in use
07:34 PM Tom_L: i get it working, i may fiddle with the old supply
07:34 PM Tom_L: it's bound to happen again
07:35 PM Tom_L: i got a psu for $17 shipped
07:40 PM rue_shop3: yay its centered
07:40 PM rue_shop3: nto bad
07:40 PM rue_shop3: I wonder if its got the same issue
07:41 PM Tom_L: says it was removed from new stock that wasn't sold
07:44 PM Tom_L: did you ever sell your pet rock?
07:45 PM rue_mohr: sell!?
07:45 PM rue_mohr: you can SELL them!?
07:45 PM Tom_L: you had it on ebay...
07:45 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1260706.jpg
07:45 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1260707.jpg
07:45 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1260708.jpg
07:46 PM rue_mohr: its been sitting there for how many years and NOW you tell me?
07:46 PM rue_mohr: :)
07:46 PM rue_mohr: the HP printers dont use a direct switch, they link it off
07:46 PM rue_mohr: I have some with wires like that, but its probably mounted by the leads in yours?
07:46 PM Tom_L: yes
07:47 PM Tom_L: i'm not too worried about it, for the business so it's better than buying a new printer which you can't get anymore
07:50 PM rue_shop3: currently 5mm target 6mm
07:50 PM rue_shop3: last pass take off .2mm dia
07:51 PM rue_shop3: the new printers are cloud connected and say their out of ink based on a page count, even if each page only had a tiny dot on it
07:51 PM rue_shop3: they auto update firmware and get worse and worse with each update
07:52 PM rue_shop3: 5.8mm
07:52 PM rue_shop3: number 1
07:54 PM rue_shop3: I suppose if I @#$%^ it up, I have to buy the right ones
07:56 PM rue_shop3: damn
07:56 PM rue_shop3: that doesn't look right
07:57 PM rue_shop3: gdamnit\
07:58 PM Tom_L: these are parport & usb combined
07:58 PM Tom_L: err no that one is just parport
08:01 PM rue_shop3: \\]well I #$@% one of them
08:02 PM rue_shop3: nope I #!$%@$#^ tyhenm both
08:02 PM rue_shop3: damnuit
08:02 PM rue_shop3: sime tings'
08:02 PM rue_shop3: sime tings'
08:04 PM rue_shop3: now I have to spend hours working out what the tooth count and pitch and junk were of these so I can match them up