EEVblog 1741 - Mailbag! — Transcript
Full transcript
- 0:00Hi, welcome to everyone's favorite
- 0:01segment, mailbag. I'll have to use the
- 0:05knife left-handed today. I'm a little
- 0:07bit ambidextrous because well, if you
- 0:10seen my EV blog two video, um
- 0:12yeah, this is the aftermath. Uh no, it
- 0:15wasn't to do with the knife. So, you'll
- 0:17have to check that out. Anyway,
- 0:19everyone's favorite segment, mailbag.
- 0:21Thank you very much to Matthew Burger
- 0:24from Switzerland. Hi to all my viewers
- 0:26in Switzerland. And if you got
- 0:28something, you want to send it in. EV
- 0:30blog mailbag. Got to put mailbag on it.
- 0:32PO box 7949. I don't know what post [ __ ]
- 0:36is. Um I
- 0:38don't know, but don't put that. Anyway,
- 0:40put PO box 7949
- 0:43Northwest, New South Wales, 2153,
- 0:46Australia. So, not quite in that order,
- 0:48but yeah, it gets here. You can be an
- 0:50individual or company and you can send
- 0:52something in and we open it up. So,
- 0:54let's have a squeeze. Haven't seen this
- 0:56before. This is new. Dear customer, this
- 0:58article was received in Australia in
- 0:59this condition and has been re-wrapped
- 1:01by Australia Post. Thank you very much
- 1:03at the Sydney Gateway facility. So,
- 1:07yeah, it's it's Kamagasa somehow. So,
- 1:10oh, got to get in here with the left
- 1:12hand. Hang on.
- 1:14This could I could Kamagasa. All right,
- 1:17we have a book and we have a note. Ooh,
- 1:21what is this? What is this? Volume two.
- 1:24Did we get volume one? I don't remember.
- 1:27Been so much sending to mailbag over the
- 1:28years. Volume two, professional
- 1:30electronic design best practices. That
- 1:34sounds awesome. Matthew F. Burger is the
- 1:38author and there you go.
- 1:40Additional best practices in circuit
- 1:42design, 100 plus new diagrams, 25 plus
- 1:44practical ready to use reference tables.
- 1:46We love reference tables. Just an
- 1:49absolute random page here. What do we
- 1:51got? Width of a 50 ohm conductor track
- 1:54on outer layer as a function of the
- 1:55height above the reference player and
- 1:57the reference service in the layer
- 1:59below. Of course, that'll depend on your
- 2:01PCB material of course.
- 2:03Section of the conductors on top layer
- 2:05between R9 microprocessor and DDR5. The
- 2:09wider space traces of data traces, two
- 2:11closely spaced traces, data strobes with
- 2:14a length of 20 mm. I'm sure they talk
- 2:17about length matching there. Routing
- 2:20differential signals. Yes. There's lots
- 2:22of photos and things in here. There you
- 2:24go. Function of dip switch settings and
- 2:27also like shunt jumpers. For example, by
- 2:31the looks of it, PCB stack-ups. Look at
- 2:34this.
- 2:35Use grids but do not align everything.
- 2:38Yes, grids are important to PCB design.
- 2:41I I won't show you every Oh, noise. What
- 2:44is that? How how to measure noise on
- 2:46power rails and ADCs. There you go. Lab
- 2:49bench test. I don't I [laughter] should
- 2:51have started from the beginning.
- 2:53What are we standards compliance? Oh,
- 2:55that's IP ratings and stuff. Wow, this
- 2:59is cool. Estimating and reducing costs.
- 3:02Oh, this looks pretty cool. Example of
- 3:05conformal coating. Look at that. That's
- 3:07thick as. Rise time estimates and stuff
- 3:10like this. Let's jump straight to the
- 3:12beginning because this is volume two.
- 3:14We've obviously missed out on volume one
- 3:16or have we? I don't think it was
- 3:17probably in a previous mailbag. Was it?
- 3:19A supercap is not a supercap. Subtleties
- 3:22in freewheeling diode selection.
- 3:25Software debouncing. Do not use headers
- 3:27in products.
- 3:29>> [laughter]
- 3:30>> I'll leave it to you to actually read
- 3:32that, the reason why do not use
- 3:34headers in products. More about memory
- 3:36selection, ADCs, DACs, sensor selection.
- 3:39Yeah, conformal coating. DC
- 3:42Jump straight from just component
- 3:44selection to like DC supply design. In
- 3:48this case, it's kind of like you know,
- 3:50the art of electronics like X chapters.
- 3:52They just sort of like you know, throw
- 3:54in these random you know, practical
- 3:56tidbits and stuff like that.
- 3:58Estimating reducing costs. So, yeah,
- 4:01there you go. It's like there's no set
- 4:03structure here. It's just jumping around
- 4:06with random little factoids. And we've
- 4:08got like standard various standards
- 4:10compliances. That's That seems fairly
- 4:12comprehensive. Look at that. Lots of
- 4:14them. Dealing with patents. Oh, yeah,
- 4:16there you go. Limits of circuit
- 4:18simulation. Yes, cuz it's not about
- 4:20simulating a circuit, it's about knowing
- 4:22the limits and the pitfalls. Lab bench
- 4:24test.
- 4:25Do not trust the e-test. There you go.
- 4:28And then just start lab bench testing.
- 4:30So, there you go. A bunch of practical
- 4:33hints and tips about various aspects of
- 4:37design and also manufacture as well.
- 4:40Neat. Wow, I'll link it in down below.
- 4:43Thank you very much, Matthew. I Yes, we
- 4:45did have it in the mailbag. Dear Dave,
- 4:48your help contributed significantly to
- 4:50the success of my first book. Over a
- 4:51thousand a thousand? Is that Is that a
- 4:53one?
- 4:54Copy sold. That is awesome. For those
- 4:57who don't know, that is quite good
- 4:58volume for like a niche technical book
- 5:01like these.
- 5:03Thank you very much. Now, I've written a
- 5:04second volume. I'd like to great if you
- 5:06could mention it too. It's available on
- 5:08Amazon for only 23 bucks. There you go.
- 5:11That's a bargain. Thank you very much,
- 5:14Matthew. 23 bucks cuz this will be print
- 5:17on demand, I'm sure. So,
- 5:19do they even mention it's Amazon print
- 5:21on demand? There's a publisher for it.
- 5:23So, yeah, I'm not sure, but anyone can
- 5:26publish a book now with Amazon print on
- 5:28demand. They you know, you don't need a
- 5:31traditional publisher. Oh, when I was a
- 5:33boy,
- 5:34now you can just you know, put your book
- 5:36on Amazon and they will print. If you
- 5:37order a copy, they will print up.
- 5:39They've got these magical new printing
- 5:41machines that'll just print you off and
- 5:43bind and glue and everything one
- 5:45particular copy just for you. And like
- 5:48it's it's fantastic. So, I'm not sure if
- 5:50that's the case here, but anyway, yeah,
- 5:53that's great. That looks really groovy.
- 5:54I love little practical random practical
- 5:59design and manufacture tips. Great
- 6:01stuff. Next up, hi to all my viewers in
- 6:04Mamaroneck,
- 6:06New York, I think.
- 6:08Thank you, Colton Wheeler. And we've got
- 6:11a direction indicator. What the heck is
- 6:14that?
- 6:16Ah. Ah. Hang on. This thing hurts too
- 6:20much. Got to go get a fresh band-aid on
- 6:22it. All right, what is a direction
- 6:25indicator Oh. Oh, that looks groovy.
- 6:29Ah,
- 6:30battery removed for shipping. Yeah, it
- 6:33stopped working. What's broke? Oh, okay.
- 6:35So, we have something broken. Oh. Oh.
- 6:39That's in Look at that. Um sort of like
- 6:43bodged-in looking solar cell,
- 6:45Nautalytics.
- 6:47So, it's some sort of nautical custom
- 6:50not high volume. Some sort of like
- 6:52custom nautical
- 6:54related product. A simple compass. Okay,
- 6:57there you go. Made in 'Merica.
- 7:00USA. Nautalytics simple compass. So,
- 7:03what is it? Some sort of like fluxgate
- 7:06compass or something?
- 7:08Uh Oh. Oh. Oh, I see three big Okay,
- 7:12it's just got three big LCD digits on
- 7:16there. Um seven segment display and it
- 7:19just displays your
- 7:21rotation. Um this has got to be ancient.
- 7:24We were rolling our own fluxgate compass
- 7:26at GEC Marconi back in the
- 7:30mid-90s, something like that.
- 7:33Um and
- 7:34yeah, that'd be my guess. But yeah,
- 7:37obviously, compass is trivial these
- 7:39days, but back then. So, I'd say yeah,
- 7:41late '80s, maybe early '90s
- 7:45vintage perhaps. Let's crack it open.
- 7:48Woah, [snorts]
- 7:49it's hard to I got to do this
- 7:50left-handed too. Yeah, it looks
- 7:52completely sealed. So, it wouldn't
- 7:55surprise me and because it's nautical.
- 7:57Wait.
- 7:58Oh, yeah. Oh. Wait.
- 8:00There we go. Oh, no. That looks more
- 8:02modern than I thought.
- 8:04Oh, yeah. Oh. Oh.
- 8:08Uh yeah, I think we've had some water
- 8:10ingress. And yeah, I was right about the
- 8:13about the O-ring seal around there. Oh,
- 8:16it's got a wireless charger receiver
- 8:19module in it. Yeah, this is
- 8:21This is pretty recent. And what's a a
- 8:23dry card? That is a That That That's a
- 8:27desiccant. That's a stick-on desiccant.
- 8:30I don't think I've seen those before.
- 8:33Leave it in the comments down below if
- 8:34you've ever used a dry card
- 8:37stick-on desiccant. And of course, do
- 8:39not eat it. Okay, this is way more
- 8:41modern than I thought. And yeah, well,
- 8:44there's your problem.
- 8:46Um what the heck has happened around
- 8:49there?
- 8:50Oh.
- 8:51And it stopped working. What has broken?
- 8:53Well, you know,
- 8:55uh what has What the heck has happened
- 8:59there? I don't know. And what is that?
- 9:02That's like a ST part, is it? Oh, no.
- 9:05Sorry to all you Atmel fanboys.
- 9:08I was mistaken. Atmel part looks like
- 9:10date code 2013.
- 9:13Whatever has happened there is
- 9:16unpleasant
- 9:18to say the least.
- 9:20Um
- 9:20oops. And that is obviously just Yeah,
- 9:24it's had some water ingress and
- 9:26corrosion there. So, yeah, there's some
- 9:28breakdown of the traces. Maybe it's
- 9:30Yeah, it's gotten down under some traces
- 9:32on the top side. I can't quite see on
- 9:34the camcorder screen. Yeah, the reason
- 9:36for the generic failure is pretty
- 9:39obvious there. Curiously, it does have a
- 9:42little micro USB. That would just be for
- 9:46interface or something. You wouldn't
- 9:49power it from that, would you? I can't
- 9:52readily see that number there, but
- 9:53that's obviously our compass.
- 9:57Jeez, when I was a boy, we did literally
- 10:00roll our own
- 10:01>> [laughter]
- 10:02>> magnetic flux gate compass. So, yeah,
- 10:05coils and everything. Now, it's like
- 10:08just plonk your SMD part down and Bob's
- 10:11your I²C or SPI interface, Bob's your
- 10:14uncle.
- 10:15Yeah, that corrosion's not pretty, is
- 10:17it?
- 10:19Yeah, so I'd say corrosion issue
- 10:22somewhere. Look at [laughter] that poor
- 10:24innocent
- 10:26micro USB connector.
- 10:30Oh, that's terrible, Muriel. And trying
- 10:32to power it from that, whether or not
- 10:34it's that is actually doable or not, I
- 10:36don't know, but yeah, diddly-squat. And
- 10:40really, that sort of solar cell is not
- 10:43going to give enough juice to actually
- 10:46power this power this Atmel processor, I
- 10:49don't think, just on its own. So, this
- 10:51is like really it just trickle charging
- 10:54when off would be my guess. And powering
- 10:58it up with an external 4-V supply here
- 11:01at
- 11:02I've got a couple hundred milliamps set,
- 11:04that's plenty.
- 11:06What what what what?
- 11:08No overload and drawing no current. I'm
- 11:10talking like 7 microamps or something.
- 11:15Uh
- 11:16Now, if we try and
- 11:17press the buttons,
- 11:19nope, nope, nope. He's dead, Jim. And
- 11:22the obvious problem is
- 11:25water ingress.
- 11:27>> [snorts]
- 11:27>> So,
- 11:29probably not worth trying to debug that
- 11:31further. It's just corroded around the
- 11:34SD connector there and those pins are
- 11:36corroded and everything. And yeah, nah,
- 11:40she's come a gutser. That's what you get
- 11:42in the marine environment, I'm afraid.
- 11:45What what what what? Well, we do like
- 11:48rethinking power supplies here on the
- 11:51EEVblog. So, thank you very much to
- 11:53Digital Power Systems in Germany. I know
- 11:56all my German viewers
- 11:59familiar Digital Power Systems. Have we
- 12:02done Are they having a second suck of
- 12:04the sav?
- 12:07Okay.
- 12:08Let's crack her open.
- 12:10Obviously, maybe some little power
- 12:12supply modules or something.
- 12:14Let's have a squeeze before we read the
- 12:16note. Oh, DIN jobbie, yes, we've had
- 12:18these before. That's I'm sure we have.
- 12:21They've sent another couple in. What is
- 12:24different? We've got a little selection
- 12:27switch now. This looks like a
- 12:29Yeah,
- 12:31that's a selection switch. And then
- 12:33we've got a
- 12:34USB-C
- 12:36out. So, let me read the note cuz I'm
- 12:40sure they're having a second suck of the
- 12:42sav. Dear Dave, we are pleased to submit
- 12:44our new power supplies for review. USB
- 12:47AC power delivery and HDR 20 5 9 and 12
- 12:51V. Could you highlight the scan and
- 12:53trust feature? What's a scan and trust?
- 12:56To I
- 12:58do we Okay. Oh, there we go. There's our
- 13:00scan and trust. There you go.
- 13:02I shall scan it and see if we can trust
- 13:04it cuz you never know. We might get
- 13:07counterfeit jobbies. So, let's get our
- 13:09shoe phone out. Oh, yeah. There you go.
- 13:11powersystems.eu
- 13:14Come on.
- 13:16You can do it. What's it going to tell
- 13:17me?
- 13:19That is genuine.
- 13:21Oh, there you go. Pass. So, it knows the
- 13:23individual serial number on it. Test
- 13:26started. Okay. There you go. Duration 20
- 13:29seconds. How do you know how long their
- 13:31production tests takes? It passed and we
- 13:34can get the data sheets and we can show
- 13:36measurements.
- 13:38Oh,
- 13:39look at this. It's got all the test
- 13:40results.
- 13:42Test from their
- 13:44production test jig. Is that what they
- 13:46were measuring? 5.15 and it should be
- 13:48between 4.9 and 5.4.
- 13:51I assume that's upper and lower bound
- 13:53there. Pass pass pass. Look at all this.
- 13:57And this is for the individual unit. OH,
- 14:00WOW. This is a Bobby dazzler.
- 14:03I've never seen this before. This is
- 14:05very impressive.
- 14:08I'm so impressed, I will accept their
- 14:10cookies. Wow, it just it just keeps
- 14:12going. It keeps going. Whoa whoa whoa
- 14:15whoa whoa. What was that? Manual
- 14:17operation versity. Oh, okay, it's
- 14:18telling them this is their production
- 14:21test instructions.
- 14:23This is crazy. So, this message would
- 14:26have been sent to the production test
- 14:28operator, reverse the USB-C cable and
- 14:30retest to verify. So, somebody's got to
- 14:32sit there and flip it over.
- 14:35It didn't take them long, of course, to
- 14:37test it because all of these are just
- 14:39automated test bang bang bang bang bang,
- 14:41you know, they take like
- 14:430.1 of a second each or something.
- 14:46That is great. Does anyone else in the
- 14:48industry have something like that? I
- 14:50really like that because
- 14:53you could get counterfeits of these
- 14:55things and this helps you verify that
- 14:58these are legit.
- 14:59Great stuff. Huge thumbs up. So, we've
- 15:01got two Oh, 240 only. Sorry, Yanks.
- 15:05Maybe they do make a Yankee version, but
- 15:08it's not universal input. It's 207 to
- 15:10253.
- 15:12Because 253 is the absolute maximum here
- 15:14in Australia. And I'm a bit confused
- 15:18here. Look, and here's our 5-V output.
- 15:21Great little Phoenix small pitch Phoenix
- 15:23connectors there. Excellent.
- 15:25But it's got 5 V
- 15:2720 milliamps and or like 20 W. So, what
- 15:31is it? 5 V at 3 amps or 5 V at 20
- 15:34milliamps? What's going on? Oh, okay,
- 15:36that must be 20 W
- 15:39for the USB-C power It's actually
- 15:41labeled there USB-C. Okay. So, that's
- 15:43for the USB-C power delivery and we only
- 15:46got a lousy 5 V at 20 milliamps out here
- 15:49just for like like a little LED or
- 15:51something.
- 15:53Okay, like
- 15:54is that like constant current driver
- 15:57with 5 V compliance voltage for a LED?
- 16:00Like driving an external LED? I think
- 16:02that I think that's a constant current
- 16:03output.
- 16:05In that case, if it is, I have to RTFM,
- 16:08but if it is, they should put CC there,
- 16:10you know, tell you that it's constant
- 16:12current. And you don't want any of those
- 16:14pesky electrolytic capacitors in there,
- 16:17either.
- 16:18And those buggers just fail. And zero
- 16:20screws for that. It just pops out. Very
- 16:23nice, just held in uh flips at the
- 16:25bottom like that. It's got the requisite
- 16:27little springy thing for the DIN. So,
- 16:31let's have a squeeze at the PCB. That is
- 16:33one big ass poly put the kettle on cap
- 16:36there. 4.7 mic there. That is absolutely
- 16:39enormous. We have double-sided load.
- 16:43Ooh, discharge capacitor before work.
- 16:46Very nice spacing around there between
- 16:49the primary and secondary. No worries
- 16:51whatsoever. There's our output
- 16:53capacitance for our 5-V output there.
- 16:56And what's that jobbie? Oh, I'm going to
- 16:59need the microscope for that. They've
- 17:01absolutely nuked
- 17:03the number from that one.
- 17:05As smooth as A BABY'S BUTT. LOOK AT
- 17:07THAT. ANYWAY, as not much to identify
- 17:11there in the primary side drive. Got
- 17:14LM324
- 17:17there on the secondary side.
- 17:20But
- 17:21apart from that,
- 17:23meh, there's our a couple of feedback
- 17:26there. Couple of big shunt resistors
- 17:28there. There's our voltage selection
- 17:30switch. It's just got a little LED
- 17:33indicator there.
- 17:35And the inductory doohickey and the
- 17:37transformer. Not much else. You don't
- 17:40need much. There's our primary side
- 17:42switching MOSFET there. Not sure what
- 17:44that one is.
- 17:46Couple of diodes shoved up the clacker
- 17:48there.
- 17:49And looking over at the primary side,
- 17:52look at this. Input fuse. Very nice. And
- 17:57that there
- 17:58looks to be one big ass MOV.
- 18:02Look at it. And we've got a secondary
- 18:04one there as well. I have to pull the
- 18:08part numbers off those, but wow, that's
- 18:11a beast. And that looks like an X class
- 18:14cap there and a common mode choke. So,
- 18:17that
- 18:18is beautiful. Well protected front end.
- 18:21I like it that. And the USB-C jobbie
- 18:24very similar. We've got the input fuse
- 18:27in here. And what I thought was a second
- 18:30MOV in parallel here, it's not because
- 18:34they've got another one over here, which
- 18:36didn't make sense. And putting two MOVs
- 18:38in parallel doesn't make sense. And the
- 18:40giveaway is the Y5V
- 18:42in that part number. So, that's the
- 18:45actual
- 18:46dielectric inside this thing. That's the
- 18:48characteristic of the cap there. So,
- 18:52yeah, I'll pull up a data sheet. I found
- 18:54that one. I couldn't find searching this
- 18:56part number, but it's obviously the same
- 18:59there. So, I believe it looks like,
- 19:01based on the traces, that it's just in
- 19:03parallel with the input there and hence
- 19:07the MOV across there is protecting that.
- 19:10So, yeah, cool. You don't usually see
- 19:15those sort of caps. Nice. And sure
- 19:18enough, no electrolytic capacitor. We've
- 19:20got a poly put the kettle on there.
- 19:22There's our USB-C
- 19:24output jack. And we've got another
- 19:26massive MOV there as well, is it? I'm
- 19:29going to have to pull the part number
- 19:30off that. Apart from that, yeah, very
- 19:33similar arrangement to what we had
- 19:35before, except we now have a bit more
- 19:38smarts here because it's USB-C. So, see
- 19:42if I can pull a number off that. Got an
- 19:44LM324
- 19:46again and
- 19:48some sort of power delivery part up
- 19:51there. They're all in one chip these
- 19:55days.
- 19:56Don't have to do any fancy pantsy stuff.
- 19:58Unfortunately, only designed in Germany,
- 20:01not made in Germany.
- 20:03Boohoo. Anyway, these are very cool. I
- 20:06think we might have powered them up last
- 20:08time and had a look, but I'm not going
- 20:09to do full performance testing in the
- 20:11mailbag, but they look like they can do
- 20:13the business. They're very well designed
- 20:16and manufactured. I like them. I'll link
- 20:19them in down below. DPS, digital power
- 20:22systems from Deutschland. Thank you very
- 20:24much, Hungry Minds, for sending this one
- 20:27in. This one I was actually going to get
- 20:30one of these myself cuz I've I've seen
- 20:32it around and I thought that looks
- 20:34awesome, but
- 20:36they contacted me and said, "Hey, can we
- 20:39send one in the mailbag?" You bet. Let's
- 20:41take a look at it. This is going to be
- 20:43one of these things where if you're
- 20:46after a present for somebody,
- 20:48though it's upside down, all the
- 20:50electrons are going to fall out or all
- 20:52the papers going to fall out. Look at
- 20:54this. It's the book, the ultimate guide
- 20:58to rebuilding civilization.
- 21:01This is one of these
- 21:03It's sealed for our protection. This is
- 21:05one of these coffee table books and if
- 21:07you're after like a present for someone
- 21:10and you don't know what to get,
- 21:11something like this is awesome. It's an
- 21:14illustrated guide as by Hungry Minds and
- 21:17it's an illustrated There's the serial
- 21:19barcode for those playing along at home
- 21:21and
- 21:23yeah, let's get this open. If you want
- 21:24to rebuild civilization, we've got a
- 21:27postcard here with a classic ouroboros,
- 21:30a like a dragony thing eating its own
- 21:33tail. Awesome postcard. Hey, Hungry
- 21:36Miner, what you're holding in your hands
- 21:37right now is not just a book, it's an
- 21:39opportunity to immerse yourself in
- 21:41fascinating worlds, explore new ideas
- 21:43and learn something new. We worked on
- 21:45this project with passion and we hope
- 21:46the book brings you a joy and value. If
- 21:49you have any questions or like to give
- 21:50feedback, contact them. There you go,
- 21:52and hungryminds.art.
- 21:55Is it? What? Didn't know there was a dot
- 21:57art
- 21:57TLD. There you go.
- 22:00There is.
- 22:01Sieva and Tim are the creators of this.
- 22:04Awesome.
- 22:05Love their illustrations. Beautiful. We
- 22:08could get destroyed very shortly by AI,
- 22:11so
- 22:12yeah, it's good to have a book, paper,
- 22:16digital rubbish that AI can't destroy
- 22:19and then we can rebuild civilization.
- 22:23>> [laughter]
- 22:23>> Yeah, I was actually going to get this
- 22:26for the dudes and cuz they love stuff
- 22:28like this. And sorry, I'm not going to
- 22:30be able to do it justice. It is just
- 22:33enormous, but apparently it's an
- 22:35illustrated guide. The story of humans
- 22:38is a story of discovery. No matter on
- 22:40which planet, which timeline, in which
- 22:41branch of the multiverse you may find
- 22:43people, they will be busy improving
- 22:45their lives. This is our great gift and
- 22:47our curse depending on which way you
- 22:48look at it. We can never stop and be
- 22:50satisfied with whatever we have
- 22:51achieved. Yeah, AI. We'll keep spreading
- 22:54faster, getting stronger and growing
- 22:56bigger until we fall. Yeah, AI. The
- 23:00ultimate guide to rebuilding
- 23:01civilization. I hope that it helps with
- 23:03your civilization will remain standing
- 23:04and if not, well, at least you can add a
- 23:06few beautiful pages to the book.
- 23:10Now, I do believe these are all hand
- 23:13illustrated. Disclaimer, this book is
- 23:15designed to provide general information
- 23:17only.
- 23:18Oh, copyright 2024 the Bad Idea Company.
- 23:21Well, I don't think this was a bad idea.
- 23:24So, everyday life, world, art, music,
- 23:27human, games, delicatessen, society,
- 23:29electricity, optics, mechanics, building
- 23:31tools, materials, food, animals, plants,
- 23:33medicine, first things, sailing,
- 23:35aviation, industry, military.
- 23:38Anyway, look at this. Making fire. How
- 23:41to actually make fire.
- 23:44>> [laughter]
- 23:45>> How to find water.
- 23:47Look, I'm
- 23:48not going to spoil the whole thing, so
- 23:50I'll just flip to a few random pages.
- 23:53X-ray, X-ray tubes, X-ray images. How to
- 23:56do this. How to rebuild civilization.
- 23:58How to make tea for you tea aficionados.
- 24:01I know you're out there.
- 24:03And animals. What do we get to do with
- 24:06animals? I love the like the paper.
- 24:09Look, it's like aged kind of paper.
- 24:13Trust me, that's they've been very
- 24:15deliberate on that. They chose this
- 24:17paper very deliberately. It is all
- 24:20I hope that's showing up on camera. I
- 24:21think it is. It's like got that sort of
- 24:24like brown old found, you know, you
- 24:27found it in the back reaches of, you
- 24:29know, the library somewhere and it's
- 24:32fantastic. Traps, how to trap animals
- 24:34and stuff like that. Food, how to make
- 24:36I mean, you forgot how to make food.
- 24:38There you go, cotton candy. Evaporation,
- 24:41sugar, materials. Well, tungsten,
- 24:44aluminum, mercury, all the all the
- 24:47These are great illustrations.
- 24:50Paints and paintbrushes, forging.
- 24:54>> [laughter]
- 24:55>> Roofing and tiles.
- 24:58This is just This is beautiful. And then
- 25:00the bicycles. Look at this. And the
- 25:03flywheel. Fantastic.
- 25:06Perpetual motion, lenses and
- 25:08refractions.
- 25:09Oh, vacuum tubes. There you go,
- 25:11incandescent bulbs, electronics and
- 25:13soldering. There you go. You're getting
- 25:15the basics there.
- 25:17>> [laughter]
- 25:18>> Manufacture your own crude soldering
- 25:20iron there. Power plants.
- 25:23Sailing, submarines,
- 25:26waste management, very important. I'm
- 25:29sure it's got plumbing and martial arts.
- 25:32This is great. Bow and crossbow,
- 25:34everyday life. Look at this food
- 25:36processor.
- 25:38Oh, my god, perfume. Interesting. Words.
- 25:42On air, long-distance communication.
- 25:43There you go. Radio, telephone, ciphers,
- 25:48painting,
- 25:49origami.
- 25:51Can't forget music. Got to rebuild your
- 25:52civilization with music.
- 25:55And look, isn't it just gorgeous? It is
- 25:57absolutely
- 25:59gorgeous. Wow, huge thumbs up to that.
- 26:03There you go. I'll try and show you that
- 26:06cuz it's such a big book. Try and show
- 26:08you that. Wires and transformers,
- 26:10electricity. [snorts]
- 26:11That is just a thing of beauty. A joy
- 26:15forever. So, that is absolutely
- 26:17incredible. The book. It's called The
- 26:21Ultimate Guide to Rebuilding
- 26:22Civilization. I will link it in down
- 26:24below. It's beautifully produced,
- 26:27beautifully illustrated. I love the like
- 26:29that'll be like acid-free paper or
- 26:32whatever it's printed on, I think. And
- 26:34it just looks and feels absolutely
- 26:37beautiful. Great gift. If you don't know
- 26:40what to get somebody, this is just like
- 26:42absolutely fantastic.
- 26:45And it's just a you know, it's just
- 26:46something that you can just pick up and
- 26:48just flick to a random page and just
- 26:50really appreciate and maybe learn
- 26:52something as well. [clears throat]
- 26:54Very cool. The dudes are going to love
- 26:57that, so I'm taking that home tonight.
- 26:59That is a score. As I said, I was going
- 27:00to get one, but they contacted me and
- 27:02said, "Hey, you want the book?" Yep, you
- 27:05bet you. What a mailbag.
- 27:08That gets two thumbs up and a big thumbs
- 27:11hey.
- 27:16>> [music]
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