#garfield Logs
Jan 07 2015
#garfield Calendar
01:09 rue_house I only seem to have once cds cell!?
01:12 rue_house I need supper
01:25 rue_house I dont know what the gain is of the preamp circuit I made
01:26 rue_house I know it outputs about 1Vp-p at a good input level
01:26 rue_house its a pn2222 with a RE of 10k and a self biased feedback of 100k
02:09 rue_house http://www.aliexpress.com/item/100Pcs-lot-LDR-Photo-Light-Sensitive-Resistor-CDS-Photoelectric-Photoresistor-5549-GL5549-Free-Shipping/2031289264.html
02:09 rue_house are those cheap enough?
20:20 e_house rep
20:20 rue_house <rue_house> http://www.aliexpress.com/item/100Pcs-lot-LDR-Photo-Light-Sensitive-Resistor-CDS-Photoelectric-Photoresistor-5549-GL5549-Free-Shipping/2031289264.html
20:20 rue_house <rue_house> are those cheap enough?
20:22 any11165462 http://wtexas.com/content/15011598-failure-thrust-vector-control-actuator-led-cancellation-flacon .... Failure of Thrust Vector Control Actuator led to Cancellation of Flacon 9’s Launch
20:23 any11165462 yeas, order 100 for me too
20:24 Tom_itx rue_house should i be checking the mail for something?
20:25 any11165462 lice?
20:25 rue_house er, post office, tI need to go to the post office..
20:26 any11165462 $12 for 100 on ebay
20:26 Tom_itx i'm going to separate the signal grounds and chassis ground and bring them together in one spot in the box
20:26 any11165462 wait, 200 pcs for $2.99
20:27 any11165462 no
20:27 Tom_itx i tried to do that the first time but may have missed some
20:27 any11165462 wait, 200 pcs for $8.65
20:27 rue_house oh that might have not been the cheap cheap ones
20:27 rue_house iirc I got gooder ones
20:27 rue_house how am I gonna get to the post office...
20:28 rue_house Tom_itx, if you lose a neutral, a ground will go up to 120V with enough current to keep whatever its powering going
20:29 any11165462 "i'm sorry, but if you want 1000 of these at discount, you need to order 1024 of them, it's our policy"
20:29 rue_house :)
20:29 Tom_itx there's been talk about that on linuxcnc too
20:29 Tom_itx i'm not doubting you but i'm not sure how to find it
20:30 any11165462 what did you lose?
20:30 rue_house I think tom lost a neutral on part of his cnc
20:30 rue_house the result was 120V power going thru his fpga chips
20:31 rue_house they didn't do good job as conductors
20:31 any11165462 that is contraindicated somewhere, i suspect
20:32 Tom_itx can i cut aluminum on a table saw?
20:32 any11165462 still, only way for the 120 to appear across anything with a lost neutral is if the whatever (the fpga) have a separate route to gnd
20:32 any11165462 yeas, 40+ tooth carbide, LOTS OF CLAMPS, GO SLOW
20:32 any11165462 wear EAR PLUGS and eye protection, it will be hell
20:34 any11165462 ideally, nothing should goto gnd at the equipment end, not even the neutral, and cable shields should not bridge tween gnd and neutral
20:34 any11165462 you should be ale to swap neutral and pwr and see little disserence
20:34 any11165462 or differance
20:34 any11165462 or change
20:35 any11165462 sooooooo, isolate parts of the tools, and power each with a gfi, see which one trips
20:38 katsmeow so "carbon steel pipe taps" are not made to create threads, only to clean them out?
20:38 katsmeow what do you use to make threads?
21:09 katsmeow IBM 5100 (1975, their first attempt at a peronal computer - discrete random logic CPU with no bus, built in BASIC and APL as the OS, 16K RAM and 5 inch monochrome monitor - $10,000!)
21:49 tsmeow pokes rue and points him to https://hd.islandnet.com/view-article/4-about-us
21:52 katsmeow Sept 1956 : IBM introduces the IBM 350 Disk File, the first hard drive, as part of the IBM RAMAC 305 computer. The drive features fifty double-sided 24-inch diameter platters, served by one arm and one read/write head. Capacity is about 5 MB, and transfer rate is 8800 characters per second.
21:55 Tom_itx and you could _SEE_ the bits on the platters
21:57 katsmeow we had a disk of oil and iron bits that made up cassette tape, when placed on recorded tape, or hdd disks, it acted just like iron filings dropped around dc arc welding cables, it showed the magnetic fields recorded
21:58 katsmeow 7hz on a cassette tape at normal speed was a series of 1/8 pulses of magnetic fields
21:59 katsmeow in the movie "Colossus: the Forbin Project" , you can see a closeup of those 2ft stacked disks and the read-write arms
22:01 Tom_itx i saw one once but i'm not sure if it wa 2' or 18" platters
22:02 Tom_itx would that be like today's 5" vs 2.5" hdd?
22:02 katsmeow several 12" hdds were scraped at recycler last yr, i didn't get them
22:04 katsmeow i recall seeing some hdd cabinets at the end of the tape drive line at one job, their were two printers, printed an entire line at a time, the paper was literally flying out of the printers several feet, that was a hell of a loud IT Dept
22:31 katsmeow In the U.S. alone, at least two million illnesses and 23,000 deaths can be attributed each year to antibiotic-resistant bacteria, according the U.S. Centers for Disease Control and Prevention.
23:23 rue_house kat, I'v had lost neutral twice, each time stuff blew up just like with tom
23:26 rue_house I'v seen those printers printing kat, fanominal speed
23:27 katsmeow where did you lose the neutral when thngs blew up?
23:28 rue_house It might be between the pc and the cnc controller box
23:28 rue_house it could have just beed a loose power cord
23:28 katsmeow oh, that is going to involve the gnd then
23:29 rue_house Tom_itx, the gfi point is a good one
23:29 rue_house a gfi might have saved it
23:30 rue_house depending where it failed
23:30 rue_house I still think you will find the parallel port on the computer is fried
23:31 rue_house thats one of the answers I'm waiting on
23:31 rue_house that would prove it for sure
23:31 katsmeow yeas, magnetic or optical coupling, with no gnd connection, would have saved it too
23:31 rue_house tho I'm confused becuse your cnc box is grounded properly, theres no direct relation between neutral and the ground
23:32 rue_house katsmeow, they use high speed data across the parallel port tho
23:32 katsmeow they use even higher speed on ethernet, and it's magnetic coupling
23:32 rue_house hard to magnetically couple a parallel port
23:33 katsmeow translators
23:33 rue_house esp when they are prolly doing bidir on the data lines
23:33 rue_house it just gets ugly
23:34 katsmeow only thing to do then is add gnd cables from mobo to case to the other equipment, and that can make for a lot of electrical noise
23:35 rue_house in one case, I'd cut the ground prong off a power cable to a monitor
23:35 rue_house the power bar I had the monitor plugged into was worn, had loose connections
23:36 rue_house the neutral connection failed, and the monitor found a power path thru the computers vga chip
23:36 katsmeow ouch
23:36 rue_house yea
23:36 rue_house that power bar got turfed fast
23:36 rue_house and I made sure the isolation transformer was the ONLY thing the ungrounded power cables got used for
23:37 rue_house (which is why the ground was cut off)
23:37 katsmeow it's scarey to realise in the olden daze, with 2-prong 110vac, touching the wires to the back of your lil crystal phono cartridge could have killed you, same with your lil earbud wires in your ear to the little CB play radio
23:38 rue_house yea,
23:38 rue_house then they polorized the plugs and screwed the one that was supposed to be neutral to the faceplate of the radio
23:39 katsmeow screwed the gnd to the faceplate
23:39 rue_house heaven forbid your polarity be wrong
23:39 rue_house I saw this with 2 prong
23:39 katsmeow ah, i misread
23:39 rue_house 2 prong polorized with the 'neutral' bonded to frame
23:40 rue_house oh huh, its, like,.... bedtime
23:40 rue_house a buddy came over with lasaugnya
23:40 katsmeow yeas, like my mom's washing machine, and the water pump motor, you got fried pretty much anything you touched in there
23:40 katsmeow lasagna in bed? that's going to make a mess, rue
23:40 rue_house nowonder she's so pandemic
23:41 rue_house no we already ate, thats why I dissapeared for a while
23:41 rue_house he already left
23:41 katsmeow my stepfaher wouldn't do anything about it, she divorced him, so then i could gnd everything directly
23:41 rue_house he's turning 30, any ideas on what I should get him?
23:41 rue_house she let you?
23:42 katsmeow umm,, no, he is Canadian, if he was americun i'd say a hooker and more beer
23:42 rue_house I mean, she let you fix the equipment?
23:42 rue_house must have ben french canadian
23:42 katsmeow yeas, rules and threats of punishment for gnding the stuff
23:42 katsmeow once he was gone, the rules changed
23:43 katsmeow same with neighbors here getting a divorce, i can goplay outside now
23:43 rue_house oh, from what I'd heard I'd expect her to threaten you for fixing it
23:43 rue_house did the ones that moved away take their damned gods?
23:43 katsmeow 10+ yrs of getting fried did soften her on that situation
23:43 katsmeow yeas
23:44 katsmeow i have not seen/heard anyone over there in over a week
23:44 katsmeow no lites on at nite either
23:44 rue_house sweeet
23:44 rue_house if it burns down, I bet they couldn't start to work out why
23:44 katsmeow yeas, i have been putting off sooooo much
23:45 rue_house hmm, ma took some ofthe ebay beads that arrived and I dont know what to check off
23:45 katsmeow i dunno, there's certain family names around here known for being very revengeful
23:46 katsmeow you sell her beads on ebay?
23:46 rue_house she buys, she loves it
23:46 katsmeow fwiw, some 12v water valves have gotten pretty cheap on ebay lately
23:46 katsmeow i dunno if they are any good
23:47 rue_house for the mecha I need sub $1 ea
23:47 rue_house :/
23:47 katsmeow some are $1.20 , maybe if you bought 50 they'd lower the price to 99 cents
23:48 katsmeow woah, it's 14F outside now
23:48 rue_house I need 180
23:48 rue_house if I spend $1 ea I have $50 left to build the rest of the mecha
23:49 katsmeow you need more DIY and less buying
23:49 rue_house :)
23:49 rue_house according to my computer I need to go to bed :/
23:49 rue_house its 6c here
23:50 katsmeow think of how it would control you if it was a real Ai
23:50 rue_house its 4.5c here, the boiler tank is at 6
23:50 rue_house if the mecha were an ai?
23:50 katsmeow the computer that tells you to goto bed
23:50 rue_house it could stand at the end of the driveway, hold up the house number, I'd give it all the power it needed to do so
23:50 katsmeow it might make the mecha put you to bed
23:51 rue_house well, my computer gently reminds me
23:51 rue_house it intensly reminds me to get up int eh morning
23:51 rue_house it suggests on garbage day that I put out the garbage
23:51 katsmeow 6c = 42F , it's 14F here or -10c
23:51 rue_house but I can ignore whatever I want
23:51 rue_house katsmeow, thats cold
23:51 katsmeow i know
23:51 rue_house ok
23:52 katsmeow thanks for reminding me
23:52 rue_house are your curled up between the processors?
23:52 katsmeow no, got 2 pair of sweats on tho
23:52 rue_house blankets on the walls and a big inefficient lightbulb above you?
23:52 katsmeow trying to figure if i can heat the water in the evaporator with the air coming outa the desktop boxes
23:52 rue_house maybe a 150W halogen
23:52 rue_house mmmm
23:53 katsmeow no, i't pretty warm, actually, i have a 900w heater going in the other room, doors open
23:53 rue_house k
23:53 katsmeow that's not only the biggest heater i have, it's the only one, least till i replace some power cords
23:54 katsmeow then i'll have 2 more 900w heaters, which i don't need, so why bother?
23:54 rue_house use 6 mor computers instead
23:54 rue_house 6?
23:54 katsmeow that's easier
23:55 rue_house gnight
23:55 katsmeow the foot roaster at the end of the bed is plugged in too, that's set at 600w, it's a fin-type radiator-type
23:55 katsmeow keeps the bed warm
23:56 katsmeow a 2ft x 2ft cave with the blankets arched over it, keeps the blankets off my feets at nite, and allows tons more heat input thanany electric blanket
23:57 katsmeow lets me use any blankets i want, no wiring knobs in them
23:58 katsmeow thy are saying low tonite will be 9f/-13c