#eevblog - 2019-06-18 - AustNet Archive Project

// #eevblog — 2019-06-18

1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
« 2019-06-17 2019-06-19 »
03:58 Quit: Lord_of_nothing ([email protected]) Ping timeout: 121 seconds
31:44 Join: Lord_of_nothing ([email protected]) to #EEVblog
31:51 <Lord_of_nothing> re
32:06 <Lord_of_nothing> Does Anyone here have an Ascom Wifi Phone System and know about?
53:47 <Ampera> Lord_of_nothing, I have surface knowledge on VoIP phone systems
59:56 <Lord_of_nothing> me to thats the problem
00:05 <Lord_of_nothing> i bought from ascom there "server"
00:18 <Lord_of_nothing> the should manange there wifi tel
00:34 <Lord_of_nothing> problem the manual show just "some" instructions
00:54 <Lord_of_nothing> And there support is not that happy i mail them
01:26 <Lord_of_nothing> and is not happy i got the hardware from ebay i dont told them...
01:28 <Ampera> first off, it's their
01:48 <Ampera> second off, I presume this is some sort of asterisk server?
01:54 <Lord_of_nothing> nope
02:06 <Ampera> So this is a proprietary VoIP routing system?
02:10 <Lord_of_nothing> its not a pbx ist just a manangment server for the telefon
02:19 <Lord_of_nothing> the telefon work fine with my asterisk
02:35 <Ampera> management server that manages what?
02:49 <Lord_of_nothing> maybe you know some hospitals where the walk arround with the light blue phones?
03:00 <Ampera> No
03:17 <Lord_of_nothing> https://www.ascom.com/content/ascom/ws/at/de-at/products/category/wireless-handsets/ascom-i62/jcr:content.thumb.319.319.png
03:39 <Ampera> Alright, so what does this have to do with a server you bought?
03:43 <Lord_of_nothing> its more an us think here in europe the use a dect system
04:00 <Lord_of_nothing> its for manange thmen
04:06 <Lord_of_nothing> update FW over wifi
04:10 <Ampera> In the US, I imagine hostpitals use a wide variety of telecommunications systems, for on and off site comms
04:17 <Ampera> So why do you need it?
04:43 <Lord_of_nothing> i mean a normal wireless phone system when the nurse is on there station
05:30 <Lord_of_nothing> we have at home 4 floors and i needes something who dont need special hardware
05:37 <Lord_of_nothing> so wifi its who come in my mind
05:40 <Ampera> So you need an intercom system?
05:49 <Lord_of_nothing> Internal Phone System
05:56 <Lord_of_nothing> Where are you from?
05:57 <Ampera> In the US normal POTS phones have intercoms built in
06:04 <Ampera> yankee doodle dandy land
06:09 <Lord_of_nothing> us?
06:14 <Ampera> US
06:32 <Lord_of_nothing> Here in Austria quite nobody have a landline phone anymore
06:44 <Lord_of_nothing> sure DSL, Cable for Internet
06:50 <Ampera> That's fine, but these are usable as regular intercoms
07:08 <Lord_of_nothing> no there you would need atleast a pbx for
08:24 <Lord_of_nothing> the best soloution is/ was,... an Wifi Phone System
08:35 <Lord_of_nothing> Wifi Hotspot are "cheap" and "open".
08:47 <K> and "does not work" as well
08:52 <Ampera> I mean that's fair enough for an in-home system, you can do that easily with a handful of SIP phones and an asterisk server
09:09 <Lord_of_nothing> @k why the should not work?
09:21 <Ampera> Lord_of_nothing, because 802.11 doesn't like moving
09:22 <Lord_of_nothing> the are sip phones
09:40 <Ampera> If they are SIP phones, then you shouldn't need a special proprietary server to use them
09:47 <Lord_of_nothing> there are some protocols for roaming
10:18 <Ampera> There are some SIP phones that will use their own non-802.11 compatible consumer band transmitters that are intended for roaming
10:21 <Lord_of_nothing> Moment! I dont "need" them for voip calls. I need it for: Software Updates via Wifi, Update Settings via Wifi
10:39 <Lord_of_nothing> also for SMS and yes "Push to talk".
10:49 <Ampera> Then why did you buy these phones?
10:52 <DHess_US> It depends on the 802.11 implementation. For instance you need to make sure the APs are on the same subnet.
11:04 <DHess_US> Some APs will hand off clients just fine.
11:04 <Lord_of_nothing> in the last 1 - 2 year.
11:27 <Lord_of_nothing> There are certified zyxel hotspot for!
11:42 <Lord_of_nothing> The Ascom are the only Wifi Phones on the Market wo realy work.
12:15 <Ampera> Not to be rude, but I can barely understand you, why are you asking about this on an English-speaking channel?
12:24 <Lord_of_nothing> the have some kind of cooperation. the voip stack is from innovphone
12:37 <Lord_of_nothing> the pbx from siemens
12:48 <Lord_of_nothing> and the phone hardware from ascom
12:54 <EEVBlog> New EEVBlog Tweet: The Day You Lost Your Music Legacy https://t.co/DLwONBEQ26
12:58 <Lord_of_nothing> Why not?
13:04 <Lord_of_nothing> Where should I ask for?
13:07 <Ampera> Because you can barely speak the language
13:12 <Ampera> a German speaking IRC channel?
13:39 <Ampera> I'm not kicking you out or refusing to help you, I'm just saying looking elsewhere than this channel specifically might yeild you better advice
13:54 <Lord_of_nothing> omg... my english skills are not perfect but i understand 99%
14:16 <desu> ich sparchen deutch jah
14:22 <Ampera> there you go
14:35 <Lord_of_nothing> sure a video about nuclear physic is way above my level but hey...
14:40 <Ampera> My German is about as good as your English, probably a bit worse, otherwise I'd speak that.
14:55 <Ampera> I'm not saying that you can't understand me, I'm saying I can't understand you.
15:20 <Lord_of_nothing> trust me that happen in my country to...
15:42 <Lord_of_nothing> i barly understand germans. maybe i am not willing to understand them
16:00 <Ampera> So if you can't understand German, and you can't speak English, what is your native language?
16:25 <Lord_of_nothing> Austrian.
17:05 <Ampera> Is the dialectical gap that far?
17:10 <Lord_of_nothing> sure
17:17 <Ampera> ¯\_(ツ)_/¯
17:21 <Lord_of_nothing> like us - aus
17:29 <desu> haha same with swedish and scania
17:31 <Ampera> Alright, as far as an in-house phone system, you're /way/ overcomplicating it.
17:37 <desu> some of them almost speak danish
17:53 <Ampera> Lord_of_nothing, unless you /really/ go thick, Australian English and US English is near identical
18:01 <Lord_of_nothing> danish sounds funny
18:09 <Lord_of_nothing> like a drunken child
18:17 <Ampera> There are commercially sold set up and use it intercom systems for almost no money
18:19 <desu> it is like amix between german and swedish
18:21 <desu> very odd
18:42 <Lord_of_nothing> dutch is funny to
18:44 <Ampera> They operate over consumer band RF, don't need a phone line, and don't need any fancy config server
19:17 <Lord_of_nothing> lol i tried some legal pmr446 device
19:24 <Lord_of_nothing> 0,5w
19:53 <Lord_of_nothing> dont work with the thick steel concrete walls
20:33 <Ampera> Ah.
20:43 <Lord_of_nothing> Wifi are perfect! the Hotspot are "cheap" and a cellular system works with many small hotspots
21:02 <Lord_of_nothing> thats why i dont understand why hotels in the us should use a "radio" system
21:05 <Ampera> If you /need/ to use IP, I'd suggest using less-weird SIP phones.
21:33 <Ampera> I'm not sure how to help you with your current stuff, but imo the simpler the better for that sort of thing.
21:45 <Lord_of_nothing> the phones work perfectly with any pbx system
21:53 <Ampera> Lord_of_nothing, because proprietary radio has been done for decades longer than 802.11, and is cheaper and more reliable
22:20 <Lord_of_nothing> cheaper? do you know what a hytera, motorola repeapter cost?
22:27 <Ampera> it doesn't require a routing system beyond very simple line switching. Most hotels actually use phone systems instead of radio
22:34 <Lord_of_nothing> ~1000€, $ each
22:46 <Ampera> Yeah no, that's not what I'm talking around
23:16 <Ampera> Simple two way comms radios, like walkie talkies have been a thing since WW2, and the tech is children's toys level of cheap
23:22 <Ampera> not that I'm saying you should use walkie talkies
24:00 <Lord_of_nothing> i dont know how its in the us here in austria there are 2 different fares for a commercia radio ~20€per Radio on a shared freq. or 2000€ / 5000€ per Month per Freq.
24:05 <Ampera> Have you thought about just getting cheap no-subscription Android phones and using something dead simple like Mumble?
24:23 <Lord_of_nothing> for that i need a wifi system to *gg*
24:25 <Ampera> In the US consumer band radios do not need a license, nor do consumer band radios need a license in Austria
24:33 <Ampera> nor anywhere in the EU
24:40 <Lord_of_nothing> pmr446 dont need any
24:42 <Ampera> I thought you already had one
24:54 <Lord_of_nothing> the limit are 0.5w outputpower
25:14 <Ampera> Yeah that's walkie talkie frequencies
25:18 <Lord_of_nothing> and no repeater or anything elese
25:32 <Lord_of_nothing> sure there arent anythink elese avaible
26:15 <Lord_of_nothing> a legal digital pmr446 radio cost ~200€ each.
26:23 <Lord_of_nothing> (with just 0,5w)
26:44 <Lord_of_nothing> the same as amateur radio, commercial 100€
26:47 <Lord_of_nothing> with 5w
27:49 <Lord_of_nothing> i got the ascom wifi ohone used from ebay for ~25e each
27:56 <Lord_of_nothing> (up to 50€)
27:59 <Ampera> As I said, you'd be better off with a German/Austrian IRC channel, as they could communicate better, and understand your local laws.
28:15 <Lord_of_nothing> i know the laws thats the problem
28:25 <Ampera> I don't
28:27 <Ampera> that's the problem
28:35 <Lord_of_nothing> why wifi are wifi
28:48 <Ampera> You see that sentence didn't make any sense
28:55 <Lord_of_nothing> why?
29:17 <Lord_of_nothing> for wifi the hardware must be certified from the company who produce them
29:44 <Lord_of_nothing> so i can bulild a fully legal hotspot system
30:34 <Ampera> "why wifi are wifi"
30:36 <Ampera> what does that mean
30:54 <Lord_of_nothing> sure wifi is wifi there is nothing about legal or illegal
31:18 <Lord_of_nothing> beside of some channels the wifi are the same worldwide
31:24 <Ampera> That doesn't make grammatical sense either.
31:43 <Ampera> It's really hard to understand what you're saying.
32:17 <Lord_of_nothing> trust me i real a lot of thinks in the forum who sound not rite
32:37 <Lord_of_nothing> even in the german languare some thinks are sound weird
33:12 <Ampera> doesn't help me, I can't understand you.
35:39 <Lord_of_nothing> so which question are left?
40:47 <DHess_US> https://arstechnica.com/science/2019/06/as-summer-heats-up-calif-utility-starts-cutting-power-to-prevent-wildfires/
42:46 <Lord_of_nothing> A hoax?
46:32 <Lord_of_nothing> Does anyone here have a medical degree?
46:43 <Lord_of_nothing> and isnt a dentist *gg*.
52:36 <DHess_US> Is what a hoax?
52:49 <K> electricity
54:48 <DHess_US> No, California is really doing that. They approved shutting off the power to prevent fires after what happened last year instead of trimming the area around the power lines.
55:32 <DHess_US> They don't advertise it but California has been doing rolling black outs since the whole Enron thing because they keep shutting down power stations which provide dispatchable power.
55:37 <desu> hope cali burns to the ground
56:40 <DHess_US> The situation has only gotten worse because all of the wind and solar they have installed is making power distribution unstable.
57:05 <DHess_US> They didn't bother installing the needed battery capacity because that would cost real money.
59:16 <DHess_US> https://www.youtube.com/watch?v=h5cm7HOAqZY
59:27 <DHess_US> California's Renewable Energy Problem
59:40 <DHess_US> Incidently, California is completely controlled by the Democrats.
47:08 Join: AndrevS ([email protected]) to #EEVblog
55:55 <DHess_US> https://upload.wikimedia.org/wikipedia/commons/6/6d/USCGC_Burton_Island.jpg
17:35 <DHess_US> http://knowledgeglue.com/amazing-un-seen-photos-chernobyl-disaster-page-5/
06:22 Topic Is: Official IRC channel of the EEVBlog - www.eevblog.com
06:22 Set By: (Halcyon) on: Mon Dec 17 17:18:40 2018
08:42 Join: Bluenote ([email protected]) to #EEVblog
09:15 <Lord_of_nothing> re
09:20 <Lord_of_nothing> 💩
34:30 <Lord_of_nothing> who is still sleeping here?
34:50 <DHess_US> Still? I haven't started.
34:52 <desu> i am still sleeping
34:01 <AndrevS> i'm off to bed
35:31 Quit: AndrevS ([email protected]) Connection closed
55:46 Quit: IvanTheBastard ([email protected]) Ping timeout: 121 seconds
59:45 Join: IvanTheBastard ([email protected]) to #EEVblog
59:46 Quit: IvanTheBastard ([email protected]) Changing hosts
59:46 Join: IvanTheBastard ([email protected]) to #EEVblog
38:06 <desu> does wire diameter matter when using torroid cores?
45:10 Quit: Bluenote ([email protected]) Quit: Leaving
01:27 <DHess_US> What miserable weather. I made a real effort to get my car fixed up for spring and summer rains and what happens? Now the windows fog up on the outside. wTF?
02:01 <DHess_US> desu, wire diameter matters for series resistance, how much you can wind, and how tough it is.
02:19 <desu> yes but in terms of inductance
02:25 <desu> the inductance produced
02:40 <desu> shouldn't matter right? none of the formulas i see mention it
04:52 <DHess_US> No, it doesn't matter for inductance in any important way.
05:19 <desu> thank you
05:20 <DHess_US> Winding into a smaller core area probably affects leakage inductance a small amount but I have never seen it considered.
07:24 <DHess_US> As you use larger diameter wire, you eventually reach a point where the skin effect becomes significant and multiple smaller wires or copper strip should be used instead.
07:58 <DHess_US> But that doesn't have anything to do with inductance.
09:17 <EEVBlog> New EEVBlog Tweet: NEW EEVblog Video! EEVblog #1221 - Mailbag Monday https://t.co/EVbnkhHq79
25:14 <coppice_> That's why the internet is a series fo tubes
50:38 <EEVBlog> New EEVBlog Tweet: Just turned down a work experience application from a keen 15yo kid & that bums me out. It's the eternal dilemma of the content creator, do I spend a week teaching one kid, or do I spend that week making content that helps hundreds of thousands?
57:49 <T3sl4> desu: magnetizing inductance only depends on turns, as long as core mu_r >> 1
58:07 <T3sl4> leakage inductance does depend on how the wires are arranged, if you have multiple windings that is
57:13 Join: kuon ([email protected]) to #EEVblog
16:57 Join: Bluenote ([email protected]) to #EEVblog
33:07 Quit: kuon ([email protected]) Connection closed
29:46 Join: Itzi ([email protected]) to #EEVblog
39:53 <EEVBlog> New EEVBlog Tweet: Nothing better than a Popoff piss-take! https://t.co/AFyP78a9XX
58:09 Join: ThunderSqueak ([email protected]) to #EEVblog
58:09 Mode: (by ChanOP) +o ThunderSqueak
02:22 Quit: Bluenote ([email protected]) Quit: Leaving
06:23 <Ampera> Hi ThunderSqueak
07:12 <ThunderSqueak> hi there
07:13 <ThunderSqueak> :)
07:16 <ThunderSqueak> how are you?
31:22 Join: Bluenote ([email protected]) to #EEVblog
50:04 <Ampera> ThunderSqueak, I think I will be fine.
51:00 <ThunderSqueak> that is good
51:58 <Ampera> I guess
52:09 * ThunderSqueak offers ampera a small glass of sake.
52:34 <Ampera> for fuck's sake :P
52:42 * Ampera drinks the rice wine
53:15 <Ampera> I'd probably do well with one of those, even though I do not enjoy the concept of alcohol
53:39 <Ampera> Medicinally, there are some points where it's not a bad idea
54:34 <ThunderSqueak> https://cdn.discordapp.com/attachments/578080191642075137/590405734483886094/image0.jpg
54:41 <ThunderSqueak> those are what I have on hand
56:23 <Ampera> I've never had sake, so I do not know what sort of beverage it is.
56:38 <Ampera> Outside of very limited exceptions I've never had alcohol (being under 21)
06:57 <ThunderSqueak> ah, it is a very smooth beverage, not strong tasting, just a mild sweetness most of the time
07:23 <ThunderSqueak> it goes very well with japanese food, as if they were designed to offset and compliment the flavor
11:11 <Ampera> ¯\_(ツ)_/¯
09:01 Quit: Bluenote ([email protected]) Quit: Leaving
09:36 <Halcyon> Hey Ampera
09:39 <Halcyon> ThunderSqueak :)
11:57 <ThunderSqueak> hi there
12:40 <steve30> hi Halcyon
13:16 <Halcyon> Hey Steve :)
22:26 <ThunderSqueak> https://pbs.twimg.com/media/D9SCiNjXoAId6y0.jpg
24:34 <steve30> aww, i like onions
24:40 <steve30> they're tasty
31:44 <EEVBlog> New EEVBlog Tweet: Pro soldering technique tip of the day https://t.co/3UJvhBRhp4
43:36 <steve30> I'm just wondering whether to report number 14's noisy dogs to the council as a 'statutory nuisance'
49:26 <DogWomble_> how bad is the barking?
50:14 <steve30> loud enough to be annoying. And has been going on regularly throughout the day for the last year or so
00:14 <Halcyon> Steve, do you know them? Perhaps you could just try having a chat to them?
00:20 <Halcyon> They might not be aware of it at all if they work
01:15 Join: Bluenote ([email protected]) to #EEVblog
01:22 Quit: ThunderSqueak ([email protected]) Quit: Leaving
01:47 <steve30> don't know them
01:53 <steve30> they only moved in a year ago
03:18 <Halcyon> Well, I know as a Police officer when we used to get noise complaints, before I go bang on someones door, I'd ask the person reporting if they had spoken to their neighbour. The answer was almost always no.
03:18 <EEVBlog> 42, Halcyon!
03:25 <Halcyon> Indeed EEVBlog!
03:51 <Halcyon> I would probably start there, if you don't feel comfortable, leave a friendly note.
04:26 <Halcyon> The Police/Council aren't there to solve every minor annoyance. If it becomes a regular concern and the owners do nothing, then sure, escalate it if need be
04:36 <steve30> Its not a police matter, because its not a crime.
05:09 <Halcyon> As I mentioned to Ampera, Police here deal with anything to do with "keeping the peace". It doesn't have to be a crime for us to get involved
05:56 <steve30> yeah, they do that here too, but somethings are technically matters for other departments
06:21 <Halcyon> I mean there is a difference between helping out someone who calls for help and doing ridiculous jobs like neighbours putting rubbish in your bin (those we reject)
06:50 <Bluenote> Unless the rubbish is a human limb.
06:57 <Halcyon> Sure
11:02 <EEVBlog> New EEVBlog Tweet: More pro soldering technique tips: https://t.co/FXO9sObgyp
35:13 <EEVBlog> New EEVBlog Tweet: RT @gheja_: @eevblog While you're there, don't forget to upgrade your processor in four easy steps! https://t.co/dzGoxM9SSh
41:51 * steve30 hugs Halcyon 
47:19 <EEVBlog> New EEVBlog Tweet: Anyone who uses Facebook's new #Libracoin cryptocurrency is an absolute fool and will come to regret it, mark my words. Having a corporation (who are renowned for being Orwellian) control access to your ability to use currency is a biblically stupid idea.
48:04 * steve30 coffees
48:47 <Bluenote> Holy crap, that's a thing? That is in fact monumentally idiotic.
52:48 <desu> china is already doing that
52:55 <desu> but i guess it's different there
54:23 <Bluenote> China's not exactly a bastion of personal liberty or privacy, to put it mildly.
03:19 <coppice_> we're already seeing that with people like mastercard
22:33 <coppice_> Halcyon: if your neighbours are acting with disregard for those around them, do you really want to go and talk to them on your own?
23:37 <steve30> I just wrote a letter to the council and said it 'may' constitute a statutory nuisance and I'd be grateful if they could do something about it.
24:03 <steve30> anyway, i've got to go out, bbl
25:44 <EEVBlog> New EEVBlog Tweet: RT @udiWertheimer: Some things to know about Facebook’s Calibra: 1. Calibra is a *custodial* digital wallet. Users won’t manage keys. It i…
38:38 <coppice_> custodial, the latest in phone books
28:11 <K> hello
38:50 <EEVBlog> New EEVBlog Tweet: Are the grandkids photos still on there? https://t.co/IamD57gff5
14:13 <EEVBlog> New EEVBlog Tweet: A good firm grip is important. https://t.co/lCvOzKiF0o
36:40 <desu> there's only one store in my town that sells electrical stuff
36:51 <desu> and i live in the next biggest city in sweden
37:04 <desu> is this common?
37:11 <desu> in other countries
50:25 <K> hm
50:34 <K> what kind of electrical stuff?
50:41 <desu> wires
50:44 <desu> resistors
50:45 <desu> capacitors
50:48 <desu> things like that
51:00 <K> hmm, there are a few places in Riga
51:06 <K> but you have to know
51:18 <desu> well there are 'electronics stores
51:21 <desu> '
52:12 <desu> but oddly enough only one of them seems to sell resistors & capacitors and wire for some reason
52:22 <K> what do they sell then?
52:31 <desu> i do not know what to call it
52:36 <desu> consumer electronics?
52:38 <K> ah.
52:58 <K> wire for installation and bulbs and sockets and that kind of stuff
55:05 Join: sofakng ([email protected]) to #EEVblog
55:22 <desu> yeah that type of stuff
55:24 Part: sofakng ([email protected]) from #EEVblog
56:02 <K> did you find any local forums?
56:17 <desu> i did
56:19 <K> you could try asking there about shops as well
56:47 <desu> i will just order from ebay or go to that one store
56:55 <desu> because i keep getting jewed on import taxes
57:01 <desu> and it is annoying
57:18 <desu> 7 kr VAT
57:27 <desu> but there's a 75 kr "handling fee"
57:30 <desu> or something
57:33 <desu> it's weird
58:10 <K> have you tried sellers from eu in ebay?
58:17 <desu> https://www.postnord.se/en/receiving/collecting-mail/from-another-country/changes-march-1
58:20 <desu> yes
58:23 <desu> but those are expensive
59:08 <desu> they started getting harsh on chinese imports because of some app called 'wish'
00:31 <desu> i dunno it's kind of a gamble
00:40 <desu> sometimes they miss it and you don't have to pay any import tax
00:43 <desu> other times you do
01:47 <K> we have to do duties-dance only if value of package exceeds $25 or something like that
03:02 <desu> we used to have something like that
03:07 <desu> but the wish app ruined it
03:42 <desu> because people ordered too much and it cost too much money for the post company
04:50 <K> i see.
06:21 <K> just checked farnell and shipping to sweden on the next day is 8 eur, tme.eu might not be next day, but is 7 eur
07:18 <K> there might be some local .se shops that could go cheeper
07:26 <K> i know we have some internet based ones
07:42 <desu> yup electrokit
07:44 <desu> they are alright
07:45 <K> local postage for small items is like 3 eur i think
07:56 <desu> only issue is the shipping is rather expensive
08:05 <K> more than 3 eur?
08:08 <desu> i'll just go check that one store out in town that has stuff
08:14 <desu> yeah it's like 10+ euro
08:14 <K> yea
08:18 <K> ah, that sucks
08:23 <K> then farnell or tme is better eh
11:03 <desu> yeah
21:07 <desu> lol
23:24 Quit: Bluenote ([email protected]) Quit: Leaving
45:22 Join: hsn ([email protected]) to #EEVblog
51:54 Join: sofakng ([email protected]) to #EEVblog
52:45 <sofakng> Can anybody help me? I'm trying to view an infrared signal on my oscilliscope to detect the signal frequency but I'm getting triangle waves instead of square?
57:17 <DHess_US> You need to optimize your photodiode amplifiers.
57:23 <DHess_US> It is too slow.
58:56 <sofakng> I'm (obviously) a newbie and still learning ... I've just connected a 940nm IR receiver diode like this: 5v -> IR receiver diode -> probe & 2.2k resistor -> GND
Search this day's buffer: