// #eevblog — 2019-08-03
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00:57:43 Quit: rust_collector ([email protected]) Quit: Lost terminal
01:02:13 Join: rust_collector ([email protected]) to #EEVblog
01:07:40 Quit: rust_collector ([email protected]) Quit: Lost terminal
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02:37:10 <rust_collector> heh, I think someone just shot the ice cream truck
02:37:27 <rust_collector> thanks to whoever did that
02:42:26 <DHess_US> Hallelujah!
02:44:23 <rust_collector> yup
02:44:58 <rust_collector> they have the most annoying jingle thing playing way too loud.
02:45:20 <rust_collector> Oh well, it said POP and it stopped
02:56:00 <DHess_US> Just know that it is a common mistake to use too much plastic explosive. 8 ounces on a gas tank of the ice cream truck is just right.
02:56:37 <rust_collector> sounds like an atm, but ok
03:00:44 <DHess_US> It would be fun to work out ways to breech ATMs.
03:01:14 <rust_collector> yeah, I guess that is a nice nerdy project
03:02:09 <rust_collector> When I was in school, there was a few atms that was just ripped out of the wall with a loader. That was pretty efficient. I have no idea if they could get any usable money out of it, but...
03:06:16 <DHess_US> I'd probably start with a fuel/oxygen explosive.
03:07:01 <rust_collector> how about just checking if the door was actually locked?
03:07:43 <DHess_US> Who cares? I want to see the door blown off either way.
03:08:45 <rust_collector> well, regular old dynamite does a great job of expanding a lot
03:14:28 <DHess_US> But how do you get it inside?
03:14:44 <rust_collector> yes
03:17:11 <rust_collector> I am guessing I would try to drill a hole. I am not so sure they are all that tough, from the rear
03:18:10 <DHess_US> If you have access to the rear then no explosives are required.
03:18:28 <rust_collector> if you want to send the door flying...
03:18:41 <DHess_US> explosives gases will work fine for that
03:18:47 <DHess_US> And can be introduced from the front.
03:19:06 <DHess_US> And if oxygen is included, then achieving the stociometric ratio for maximum effect is easy.
03:19:52 <DHess_US> We used to do it for baloons filled with hydrogen. Just electrolyse the water and fill the balloons with both products. They make quite a bang.
03:20:45 <DHess_US> Some thieves actualy do use the gas method.
03:21:04 <DHess_US> They build some ATMs now to defeat it.
03:33:45 <rust_collector> heh, are they full of holes?
03:43:20 <DHess_US> Partially. They include blow out sections which do not compromise the safe.
04:09:08 <rust_collector> great, then that is where we stick the dynamite
04:10:17 <rust_collector> Meh, I don't really care about the ATM. I just want to blow something up
04:10:37 <coppice_> what about a doll?
04:11:19 <rust_collector> Not sure. I never got one. and the wife says it is a bad idea
04:16:01 <DHess_US> How about blowing up this guy? https://www.nbcnews.com/news/us-news/texas-police-officer-kills-woman-while-shooting-loose-dog-police-n1038531
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09:55:22 Mode: (by ChanOP) +o ThunderSqueak
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15:59:27 * Halcyon mews loudly at the room
16:00:37 * Halcyon licks Ampera
16:00:43 <Ampera> Hi Halcyon
16:00:51 <Halcyon> Heya :)
16:06:17 Quit: mattinx ([email protected]) Ping timeout: 121 seconds
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17:07:03 <DogWomble> moo!
17:41:13 <rust_collector> fish sounds
17:41:27 <Halcyon> Hahaha
17:44:43 <rust_collector> Todays theory is: if something comes and rips australia off, and disappear into space, I think the inside of the world would fall out
17:50:00 <Halcyon> Heh
17:57:05 <Halcyon> https://www.news.com.au/national/politics/nuclear-power-to-be-examined-in-australia-for-the-first-time-in-ten-years/news-story/677581a1e37611f9ca9b32d8a0cbad3d
17:57:07 <Halcyon> About fucking time!
18:00:00 <rust_collector> eeh, do you have them there, just not up and running, or are you thinking about building new ones?
18:03:02 <Halcyon> We only have one reactor and it's used for medical science only
18:03:13 <Halcyon> Currently it's illegal to build reactors for power
18:04:19 <rust_collector> ok
18:05:57 <rust_collector> IIrc, we shut down our last reactor last year, or maybe it was this year. we only used them for research too.
18:08:05 <rust_collector> oh, uhm. The board will not apply to extend its operating licence, which expires in 2020, and the reactor, which is currently shut down due to a safety valve failure, will not be restarted.
18:08:22 <rust_collector> so yes, pretty much
18:46:26 Join: PsySc0rpi0n ([email protected]) to #EEVblog
18:47:09 <PsySc0rpi0n> Hello
18:48:22 <PsySc0rpi0n> I need some help... I have this small circuit boarc that I need to test some points for voltage readings/measurements but the circuit board is covered/protected in some gold color layer
18:48:44 <PsySc0rpi0n> so I can't make proper contact with test probes and the circuit test points of interest
18:48:57 <PsySc0rpi0n> any wasy way of removing that protective layer?
18:59:34 <Halcyon> Hi PsySc0rpi0n, hang around, most of the guys who would know are asleep
18:59:38 <Halcyon> T3sl4 for example
19:00:05 <PsySc0rpi0n> sure, I'm always around
19:00:17 <PsySc0rpi0n> although, I didn't know eevblog wason this network
19:00:19 <T3sl4> uh, conformal coating can be hard
19:00:28 <T3sl4> if it's the easy stuff, THF is apparently the ticket
19:01:01 <PsySc0rpi0n> THF is what? Some alcohol or something like that?
19:01:29 <PsySc0rpi0n> The best I have is isopropilic alcohol (or whatever it is typed like)
19:01:30 <T3sl4> closeish, tetrahydrofuran
19:02:38 <T3sl4> if all you have access to are baby solvents, there's always the fetal position :P
19:03:14 <rust_collector> gold... is it hard, or sort of rubbery feeling?
19:03:24 <PsySc0rpi0n> baby solvents?
19:03:36 <PsySc0rpi0n> gold is just the color
19:03:40 <rust_collector> it is what they use in places you can not have abortions
19:03:43 <PsySc0rpi0n> no gold material whatsoever
19:03:59 <PsySc0rpi0n> I can take a picture
19:04:03 <PsySc0rpi0n> gimme a minute
19:04:06 <rust_collector> no, but is it "paint" or... yes
19:07:04 <PsySc0rpi0n> https://i.ibb.co/T2hKXW0/20190803-100504.jpg
19:07:25 <T3sl4> ew
19:09:53 <PsySc0rpi0n> Bad news, right?
19:10:02 <PsySc0rpi0n> Is this the hardest stuff to remove?
19:10:08 <rust_collector> if you can probe on the back of solder blobs, I think I would try scraping with something sharp
19:10:58 <PsySc0rpi0n> on the back side is a plug that has also difficult access for probing/measuring
19:11:14 <PsySc0rpi0n> this is a charger controller of a laptop battery
19:11:43 <PsySc0rpi0n> so the other side is where the plug that conects to the laptop housing
19:11:52 <T3sl4> is it like rubbery
19:11:54 <T3sl4> or hard
19:11:55 <T3sl4> or what
19:12:09 <PsySc0rpi0n> it is more hard than rubbery
19:12:17 <PsySc0rpi0n> but it's not completely solid
19:12:34 <PsySc0rpi0n> but I think I can try to scrap it out
19:12:49 <PsySc0rpi0n> Isopropilic alcohol won't help at all?
19:12:58 <T3sl4> THF, is in PVC primer for example, or you can order a conformal coating remover pen that's full of it
19:13:06 <T3sl4> isopropyl is basically water, no
19:13:23 <T3sl4> you can soak it for a few days if you like, i'm guessing it won't do anything
19:13:30 <T3sl4> or acetone, same
19:14:02 <PsySc0rpi0n> ok
19:14:08 <T3sl4> or methylene chloride, in paint stripper, but beware it'll swell the PCB laminate too, more of a nuclear option
19:14:22 <PsySc0rpi0n> no no
19:14:30 <PsySc0rpi0n> I can't spend much more money on this
19:14:36 <PsySc0rpi0n> it will probably end up in nothing
19:14:44 <T3sl4> what kind of a battery is worth even popping open anyways?
19:14:49 <PsySc0rpi0n> as probably I have already bricked this thing while trying to replace old cells
19:14:51 <T3sl4> other than for curiositys sake of course
19:15:09 <PsySc0rpi0n> This battery new costs like 100€
19:15:20 <PsySc0rpi0n> It's an 11.5A output battery
19:15:32 <PsySc0rpi0n> So, I gave it a try
19:16:05 <PsySc0rpi0n> but as I'm not an experienced user of electronics, unfortunatelly
19:16:18 <PsySc0rpi0n> I made a couple of mistakes and probably bricked the charger controller
19:16:47 <PsySc0rpi0n> there were a few steps to take into account and by accident, once or twice I couldn't hold to them
19:17:08 <PsySc0rpi0n> like a wire getting loose after soldering it...
19:17:22 <PsySc0rpi0n> Anyways
19:17:30 <PsySc0rpi0n> result is that the cells are assembled
19:17:47 <PsySc0rpi0n> and I can read corect voltages and everything seems ok with the cells
19:18:09 <PsySc0rpi0n> but at the circuitry I can only measure voltage at the input points of + and gnd
19:18:19 <PsySc0rpi0n> other than that I measure some random values
19:18:33 <PsySc0rpi0n> and I wanted to try to see where the voltage vanishes in the circuit
19:19:06 <PsySc0rpi0n> there are a few FET's at the beginning of the circuit on the V+ side
19:19:15 <PsySc0rpi0n> TPC8114. At least 3 of them
19:19:38 * steve30 meows at Halcyon
19:20:21 <Halcyon> Hey Steve :)
19:23:41 <steve30> My Mum reckons the washing machine is leaking now.
19:26:00 <rust_collector> did you try to fix it, steve30? because that is why i would get messages like that
19:26:22 <rust_collector> you fixed the brakes, so now the engine is making a knocking sound
19:26:46 <steve30> We put new brushes on the motor a while back.
19:27:13 <rust_collector> there you go
19:27:22 <rust_collector> so it is your fault
19:27:57 <steve30> well, I say 'we'; it was actually a family friend who is an experienced home appliance technician :)
20:12:21 <rust_collector> so, today seems to be a somewhat electric/electronic fixing day. I got an old mercedes c something with all kinds of errors
20:12:31 <rust_collector> should be fun
21:10:52 Part: T3sl4 ([email protected]) from #EEVblog
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21:15:01 Mode: (by ChanOP) +o T3sl4
22:53:44 <T3sl4> steve30: relevant comment found on Imgur https://imgur.com/gallery/gJWb8do/comment/1693613491
22:56:01 Quit: SnowCrab ([email protected]) Quit: Connection closed for inactivity
23:01:36 <steve30> hehe
23:01:45 * steve30 purrs at T3sl4
23:02:02 * T3sl4 scritches steve30 behind the ear
23:03:43 * steve30 purrs some more :)
23:37:34 Quit: PsySc0rpi0n ([email protected]) Quit: leaving
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