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EEVblog

EEVblog

Күн бұрын

Xmas Mailbag
SPOILERS:
Mand Labs electronics learning kit:
mandlabs.com/
(yes, 27 minutes of it)
27:08 Petzl climbing harness
33:20 RC2014 home brew DIY Z80 computer kit
rc2014.co.uk/
www.tindie.com...
39:00 Custom test leads
40:40 Aircraft 121.5MHz emergency beacon and altitude sensor teardown
51:30 Monero miner, and some Linux GPL hate!
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Пікірлер: 653
@rlarsen76
@rlarsen76 5 жыл бұрын
I work in Norwegian Maritime Search and Rescue, last year we had a 121.5MHz beacon go off, and it sounded like it was pretty close. We tried ground and ship based direction finders for about a day with no luck as all signs pointed to it being on-shore. So we dispatched a Sea King rescue helicopter with a direction finder and it tracked it to a local recycling plant. We sent an operator out with handheld direction finding equipment and he found an old beacon that had a change by date of mid 1993 on the battery. So yeah, those suckers can be a pain if they go off accidentally ;)
@EEVblog
@EEVblog 5 жыл бұрын
Wow, thanks for sharing that
@longdarkrideatnight
@longdarkrideatnight 5 жыл бұрын
This kit is for impressing the people that pay for educational equipment, and materials. The administrators are the customer. Most teachers and schools teach to a set of learning objectives, these are set by national or state bodies. Kits like this are built to allow administrators, to buy a system that fills the lesson objectives, and then wash their hands of the process. Actual learning is left up to the teachers, if they have the skill work around the product, or if not simply follow the products proscribed plan. If you attend a teaching technology show or conference. The sales pitch is all about which governments objectives are being met, or how many schools are using the product. You can find products that are interested in student learning, but they are often at the back off the hall, and the teams are bright and energized people, who do not know know that the customers are not students.
@boelwerkr
@boelwerkr 5 жыл бұрын
About the accelerometer switch. It is build around a magnet. The tube is a magnet an the screw on one side and the contact bars on the other side are made from iron (plated with gold for good contact) The magnet will loosely stick to the screw but very firm to the big contacts. If a shock can loosen the magnet from the screw it will stick to the bigger contacts, and stay there until its pushed back to the screw with the reset button. The distance of the magnet to the contacts determines the force need to make it moved the closer they are the less force i needed. But such system is not very accurate, really exact measurements are not possible but it is good enough to detect a crash. :-)
@suzukichopper
@suzukichopper 5 жыл бұрын
The random nut and bolt came from the cutters/strippers. It's the gauge stop so you can actually strip wire and not just cut it. That'd be a frustrating lesson to each a kid if they all lost that stop.
@squidcaps4308
@squidcaps4308 5 жыл бұрын
I absolute agree, get lights flashing before you hit 5 minutes, literally. Battery, resistor and led. That is all you need for the first lesson. After they have lit that first LED, point out that the battery has two ends. You can switch the polarity of the LED to show also how semi-conductors work, make them reverse resistor too to point out the difference and... Practical examples, direct to results as fast as possible. Theory comes next, passion has to come first. My school had the same system, theory first and we went thru every single parameter in the equation before we get to solder anything. Of course i had experimented at home, dad has a shop. It was horrible way of teaching anything, things were complete haze and you started to avoid making any assumptions until you got to the lab... since that was the place we actually learned. I did have horrible teacher in theory though, he was actually mechanical engineer, read direct from the book, didn't answer a single question with: "look it up from the book". Lab teacher was absolute miracle, tough, hard and merciless, we did not get to make any mistakes before passing many subjects, safety was zero tolerance policy, absolutely not a single mistake. Kicked our asses but answered every question, knew how to make quick (and very dirty) analogies.
@VintageTechFan
@VintageTechFan 5 жыл бұрын
If you look at Dave's video about his old 200-in-1 electronics kit, they did exactly that. They had 23 experiments, some of them quite already extensive and awe-inspiring .. which were actually on monkey-level. They just said: "Install those wires from there to there and exciting stuff happens." After that, they took the step back to a switch and a lightbulb and explained how it worked, catched up to the level of the first few projects and went beyond that. The kit I had as a kid did the same.. first thing: Put a led blinker together like this 3D drawings. That's how you get people hooked up on something and keep them there.
@ruwo7697
@ruwo7697 5 жыл бұрын
I don't know about you, but I'm 17 now and when I was 12 they made us do a kit like this. I can tell you, it bored the hell out of the entire class. it was doing stupid stuff like letting a light blink, then adding an MCU to make lights blink in a row, that sort of stuff. I would have much preferred this, even if all the formulas are just something to read, not understand. I think this is clearly made for the classroom, just look at how the book is written. for autodidactic use, it's way too detailed, but when you have a teacher going over it with you, it's absolutely perfect.
@gblargg
@gblargg 5 жыл бұрын
Besides, you can always keep going deeper into the physics of it. Start with things as black boxes, then peel them away as much as the student is interested in doing.
@VintageTechFan
@VintageTechFan 5 жыл бұрын
@@gblargg That's how it see it usually done and I think that's the correct way. There is only one thing you should never do: Teach something which is plainly WRONG and then try to change it later on. The first one may stick.
@VintageTechFan
@VintageTechFan 5 жыл бұрын
Since you asked for it: My opinion is, especially for kids, show them something cool, let them do it and THEN explain how. And don't go too much into the details. NEVER teach something wrong, but leaving out special cases and side effects and the pitfalls of real world components for now is fine. You can add those details later. The way they are doing it, you are lucky if your audience makes it halfway through without falling asleep or wandering off. Also, absorbing random facts thrown at you is not how learning works. You need an application for it, or even better, you see something which makes you curious and THEN you get the info you WANT right now.
@Mythricia1988
@Mythricia1988 5 жыл бұрын
This is exactly the attitude I've taken towards teaching programming locally and to a few friends over the years. Get them doing cool shit as fast as humanly possible, even if that means having to skim over some genuinely important aspects at first. Once they're interested and enthused, they will automatically care about the details, because now they understand why the details matter. Going with the technical details right out of the gate will put off people who may very well be EXCELLENT engineering minds, before they get a chance to discover it. Shame, since so much education is done this backwards way.
@VintageTechFan
@VintageTechFan 5 жыл бұрын
​@@Mythricia1988 I'm getting into RF circuit design now (actually .. that's why I got my ham license .. in 2007) and I wanted to "learn" how to do it and got a lot of books but somehow I was captured into the mindset of "I'm an engineer now, I have to learn how to design it first and then make a top notch circuit, working perfectly first shot." That didn't work out at all, was extremely frustrating and even let me drop the interest at all for months at a time. Now I started to reproduce simple, but proven designs and to understand them while building them. I learned more in a few weeks than over years trying to suck up dry literature. And as Dave uses to say, you learn by FAILing. Some of those examples didn't work correctly, but since they come out of reputable sources which have proven them to work, I know that I "just" have to troubleshoot them. I got all of them working and learned a few pitfalls ..
@mr_gerber
@mr_gerber 5 жыл бұрын
@@VintageTechFan Why the assumption that being an engineer is getting it perfect the first time? The most important they teach you in the engineering degree is the ability to learn a lot in a really short time. Perfection you get by doing the same stuff over and over again :)
@mr_gerber
@mr_gerber 5 жыл бұрын
Also - when I was a kid, (and now tbh) I thought theory was cool. I would read encyclopedia articles by random - just out of sheer interest. I might not have been a usual child, I admit - but knowledge can also be cool/interesting!
@VintageTechFan
@VintageTechFan 5 жыл бұрын
@@mr_gerber No worries. Figured that out years ago .. feeling much better now.
@Northern5tar
@Northern5tar 5 жыл бұрын
Yeah the Mand kit, that's a no from me. So much focus on packaging and presentation (and still manage to get it cringeworthy wrong) and having maybe 20 dollars worth of parts and tools. A kid doesn't need to know quantum theory before connecting a led. I think Dave and many others here could put together a fun educational experimentation kit with twice as much components at half the price.
@Gossamer2
@Gossamer2 5 жыл бұрын
QR Code 51:39 says "I seriously hope you guys don't scan this." Too late! :)
@EEVblog
@EEVblog 5 жыл бұрын
Nice!
@BobWiersema
@BobWiersema 5 жыл бұрын
Glad I wasn't the only one nutty enough to scan it.
@charles8060
@charles8060 5 жыл бұрын
It's George Costanza's face lol
@ElectronicEnigmaZone
@ElectronicEnigmaZone 5 жыл бұрын
It somewhat irks me about the statement at the end about "The curse of Linux". If you go back in time to when Unix and the C language was being developed at AT&T. AT&T was the only one who could call their OS UNIX. At the time being a Phone company monopoly they could not market and sell their new OS UNIX so one thing they did was give the tapes to Berkeley and so was born BSD. Between the two they made the OS what it is but since AT&T forbid anyone to call it UNIX everyone else who got a hold of the BSD tapes had to call their version something else like Sun-OS or IBM AiX, DEC OSF, HP-UX you get the picture. But still the OS was not in the hands of the hobbyist because the needed equipment was too expensive and out of reach of the average person. Along comes the revolution of the IBM PC, when 80286 and 80386 showed up it allowed end users to develop multi tasking OS's. But still the UNIX was not in reach of the average user and one big hiccup was a affordable C compiler, those suckers cost a lot. What Linus did was give us that UNIX like OS for basically no cost and Stallman of the GPL that you hate gave us GNU and this combination opened the door for everyone who wanted to develop applications in a UNIX like environment and a C compiler to do it that was basically at no cost to the user. Without Linux and without GNU you would not have today that Alexa, the Android phone, and millions of other devices that Linux and GNU made possible. You might hate Linux and you might hate GPL so be it but speaking you hate in letter does disrespect the thousands and thousands of developers that made all this possible and in a sense made Open/Free/NetBSD possible also. Ps: I think those older Electronics kits with the 101/200/500 experiments and the board with the springy terminals and you just connected wires were the best as a kid I had one that was 200 circuits and I made that book pretty dog eared and worn out.
@nuclearcat
@nuclearcat 5 жыл бұрын
The guy who wrote this GPL rant is just pathetic. If he don't like GPL, why he doesn't ignore it? He don't like some card model, same, or - give reasons why to not use. And most importantly, he sends two strange flash drives, claims that there are gifts, screaming a lot of distracting information about the GPL, BSD, fonts, card, and same time does not include any information proving that they are not trojans or even sender name might be fake. The first thing I would do is upload it to virustotal. Smells like a scriptkiddo. But i'm not surprised, while cryptocurrency is interesting mathematical and programming concept, but same time it is more phenomena like Tide as currency (it was a currency for drug dealers at some moment in history). Many cryptocurrency fans (those who view it as sort of religion) are not friends with their own head.
@TombunnyHunter
@TombunnyHunter 5 жыл бұрын
@@nuclearcat If you don't like his rant, why don't you ignore it? ;)
@aaa-gk7gc
@aaa-gk7gc 5 жыл бұрын
What you're referring to as Linux, is in fact, GNU/Linux, or as I've recently taken to calling it, GNU plus Linux. Linux is not an operating system unto itself, but rather another free component of a fully functioning GNU system made useful by the GNU corelibs, shell utilities and vital system components comprising a full OS as defined by POSIX. Many computer users run a modified version of the GNU system every day, without realizing it. Through a peculiar turn of events, the version of GNU which is widely used today is often called "Linux", and many of its users are not aware that it is basically the GNU system, developed by the GNU Project. There really is a Linux, and these people are using it, but it is just a part of the system they use. Linux is the kernel: the program in the system that allocates the machine's resources to the other programs that you run. The kernel is an essential part of an operating system, but useless by itself; it can only function in the context of a complete operating system. Linux is normally used in combination with the GNU operating system: the whole system is basically GNU with Linux added, or GNU/Linux. All the so-called "Linux" distributions are really distributions of GNU/Linux.
@nuclearcat
@nuclearcat 5 жыл бұрын
@@aaa-gk7gc Sorry, but this Stallman mantra is obsolete and not correct anymore. Android is not GNU Linux, while it is Linux. Other similar examples exist as well.
@nuclearcat
@nuclearcat 5 жыл бұрын
@@TombunnyHunter because it is in context of obvious distraction for the Dave (and probably others), so he install malware. If it were just a rant, I would have ignored it.
@freeman2399
@freeman2399 5 жыл бұрын
I agree with Dave. I think teach the exciting stuff first, circuits, wires, motors, led's, then later fill in the theory. Teaching the theory off the bat can turn kids off.
@Patchuchan
@Patchuchan 5 жыл бұрын
Agreed trying to teach theory right off the bat to young children would turn off even the brightest of children.
@radekc5325
@radekc5325 5 жыл бұрын
When I was a kid I had some educational kits and they were fun but for the heck of me I couldn't understand basics like voltage and current (that was before the internet). I remember it was as little bit frustrating when my parents couldn't explain it to me. Only much later, in 7th or 8th grade, it finally clicked in when they started talking about static electricity in school. Having said that, if someone just said "take two buckets of water, place one on top shelf and one on bottom shelf. The difference in height is called voltage. Connect them with a pipe and water will flow, that flow is called current" would be the perfect level of detail for me back then.
@BogdanSerban
@BogdanSerban 5 жыл бұрын
That Mand Labs video looks like a cheesy Bollywood movie. I actually expected somebody to start a dance-off at some point.
@karlharvymarx2650
@karlharvymarx2650 5 жыл бұрын
I liked the old 300 in 1 kits but quickly grew frustrated that I wasn't learning enough to get much beyond their pre-cooked circuits without letting the smoke out. I think I would have liked seeing a circuit that does something, followed by a practical explanation of how it works with footnotes to a section with equations, history, and theory. Examples of how sub-circuits can be combined would have been nice too. So I guess I wanted fun with the option to learn enough to have more fun beyond what the author came up with.
@bradinaccounting3898
@bradinaccounting3898 5 жыл бұрын
I'm 12 minutes in and I can honestly say that I'm shocked at the amount of air time Dave is giving this kit (and even with the amount of praise that's being heaped on it, with no mention yet of price). Is this a sponsored review? Edit: Jesus christ. Covering the kit for 27 minutes?! The parts in this kit are essentially identical to the parts in 1,000 other "basic electronics kit" packages, all of which can be picked up for $30, and which come in a simple plastic compartmented container which is actually practical for reuse, unlike this thing. I don't get it.
@UnreasonableSteve
@UnreasonableSteve 5 жыл бұрын
I have to agree, I kept skipping forward a few minutes at a time, getting more and more surprised that he was STILL talking about it each time.
@daverhodes382
@daverhodes382 5 жыл бұрын
Brad In Accounting Don't watch it then.
@randomentity6553
@randomentity6553 5 жыл бұрын
$150.00 for the "Standard" $200 for the "Premium" - "There's a sucker born every minute" - P.T. Barnum
@strangersound
@strangersound 5 жыл бұрын
The marketing people got him with the packaging. ;)
@Morbuto
@Morbuto 5 жыл бұрын
$30? There’s literally $1 worth of components (being generous) and a $2 multimeter. And $10 packaging...
@RemcoStoutjesdijk
@RemcoStoutjesdijk 5 жыл бұрын
Pro engineer with 25+ years experience here. Probably couldn't do the band gap / energy barrier / p-n junction talk if it saved my life. Enough already, the 3 nerds who want to know it can look it up on wikipedia.
@EEVblog
@EEVblog 5 жыл бұрын
Yeah, it's one of those things you learn and forget. I can't see how it belongs in a beginner kit.
@squidcaps4308
@squidcaps4308 5 жыл бұрын
Huh, i'm glad i'm not alone...
@VerstehenSieMathis
@VerstehenSieMathis 5 жыл бұрын
There's good reasons to teach all the physics& math stuff to engineering students, but for kids that's going way too far. Mentioning Kirchhoff's law in the LED tutorial on the other hand was a good thing, it's useful to calculate the resistor value using simple math.
@redsquirrelftw
@redsquirrelftw 5 жыл бұрын
What, this is like grade 3 stuff! What are they teaching in schools now days if kids don't know this? :P
@supaschwamal
@supaschwamal 5 жыл бұрын
@@redsquirrelftw it's being taught alright but do you really think 3rd grade students understand its relevance?
@Darphi01
@Darphi01 5 жыл бұрын
Hi Dave, Looking forward to seeing you pout together that RC2014 Mini. I'm an avid Zilog fan and have engineered many systems based on the z-80. Also the z8001 and 8002 CPU's.
@mcflapper7591
@mcflapper7591 5 жыл бұрын
best of this electronics kit: the silica dry bags. :-)
@TommyCrosby
@TommyCrosby 5 жыл бұрын
I don't think this kit was built to target younger kids. It's more to the level of high school (13 years old) where they can comprend technical stuff and physics.
@VintageTechFan
@VintageTechFan 5 жыл бұрын
​@@vola-2899 For books .. have a look at "The art of electronics". Yes it is a BIG one, but it teaches you "circuit design" on a very practical basis. It shows all the basic building blocks, explains them throughly .. including the pitfalls and traps in practical application. It explains which parameters are important for which application. It even has tables showing the "usually" chosen parts for some applications. For " I want to start building difficult systems right away". Forget it. Just .. forget .. it. Hasn't ever and will never work. Tried it myself, did cost me a few years of frustration. Start little. Fail at it. Then do it the other way. Then get a little larger, rinse and repeat. There are no shortcuts to practical experience.
@Blitterbug
@Blitterbug 5 жыл бұрын
Sorry, doesn't make sense. Any high schooler would vomit at the pathetic cringe, which is aimed either at pre-schoolers or remedial classes.. Edit: Either keep the cringe & the experiments and lose the science (targeting youngsters) or keep the science & experiments and dump the shitty acting if aiming at teens. Can't have it both ways.
@Kai-ml2iu
@Kai-ml2iu 5 жыл бұрын
​@@VintageTechFan I just got "The art of electronics" for christmas and started reading immediately. It's an excellent book for beginners and intermediate, so I absolutely agree!
@NebukadV
@NebukadV 5 жыл бұрын
You see a well made and well organized kit - I see a lot of plastic, that will go to waste very soon in most cases. You see high quality paper - I see paper, that is so heavily inked, that it is almost impossible to recycle. I don't wanna ruin your enthusiasm and I know it's crucial, to get more ppl. to become engineers - but do we really need more and more of these kits? I got into EE without any of these kits and afaik so did all my EE friends.
@johnpenguin9188
@johnpenguin9188 5 жыл бұрын
Lol that “teaching” reminds me of how computer science is taught in school. They’ll start you with “while loops” and “for loops” instead of how to call some functions and get down to doing something actually cool.
@OM222O
@OM222O 5 жыл бұрын
My dad would buy me electronics kits when I was 4 and we built them together. I had to identify the parts from the manual and give them to him to solder. Seeing how I could make a radio or a music generator or even a led flasher seemed like magic back then! I am now designing and building my own kits and really like electronics.In primary school they tried teaching us all of these super technical details which honestly felt really boring at the time. I think high school would be the best time for that, especially considering that people learn chemistery and they'll know about electrons and protons and whatnot by then.
@mcflapper7591
@mcflapper7591 5 жыл бұрын
kit: these guys give the impression of not having the slightest idea of what they're talking about. ===>>> hit the *FAIL* button, after all!
@RobertLee-dc5cy
@RobertLee-dc5cy 5 жыл бұрын
Dave: will risk his life with iffy climbing gear, won't risk his network with iffy usb.
@resneptacle
@resneptacle 5 жыл бұрын
@@Okurka. All depends on first impressions I guess
@userPrehistoricman
@userPrehistoricman 5 жыл бұрын
Faulty climbing gear will only end your life. Iffy USB will ruin it!
@WafflesASAP
@WafflesASAP 5 жыл бұрын
I would 100% fold that box back up and carry everything around in it if I were a kid looking to take the kit to a friend's place. Incredible packaging and presentation!
@LarsBgildThomsen
@LarsBgildThomsen 5 жыл бұрын
One thing I remember from when I was a kid was that if there was one thing that annoyed me it was "adults" treating me like an idiot that didn't deserve to know all the details. Sure, there were tons of stuff that didn't interest me at all, but when I got interested in something I wanted to know all about it - history, details - the lot - and if that was not available I would just lose interest right way. I think whoever produced this kit should get top marks for providing all those details - including the historic notes. Sure it might bore some readers but the ones who read it - they are the ones that become great engineers eventually.
@michaelpiotrowicz6100
@michaelpiotrowicz6100 5 жыл бұрын
'Propeller for the motor, fantastic.' Elite pun.
@davidhoekje7842
@davidhoekje7842 5 жыл бұрын
I don't want to be disrespectful to the person who designed that electronics kit, but at some point it's necessary to be honest. Most kids would prefer a fishing tackle box with the components in the various bins and a book of line drawings of how to make cool circuits. Dedicating a drawer to a minuature screwdriver and pair of strippers is just bizarre. I'd have to give it a D-
@Ispike73
@Ispike73 5 жыл бұрын
When I was a kid I bought Radio Shacks Basic Electronics book. It started out with basic physics that looks almost identical to what's in this book (right down to the tormented diode). That was my favorite part of the book. I didn't really care for the paint-by-numbers approach the most kits came with, I wanted to know why something worked the way it did. I think learning the fundamentals is necessary when starting out even for kids, just keep the underlying math to a minimum.
@johnfrancisdoe1563
@johnfrancisdoe1563 5 жыл бұрын
Ispike73 I started with some much more basic books with really simple experiments (that I didn't bother building) and two really simple kits (one single purpose cheap, the other a multi-experiments kit). The books started from non-nuclear basics with no semiconductors, just basic batteries, switches, magnets and lightbulbs, then by mixing books and parts worked my way up to computers long before going to uni.
@fluxoff
@fluxoff 5 жыл бұрын
Mand Lab kit 1 manual was fantastic. The deeper theory material is exactly the stuff that makes me reread a manual especially at bedtime!
@tdabonde
@tdabonde 5 жыл бұрын
I'm for practical learning. My father started teaching me Phase and Hertz when I was little, I struggled to understand and got scared off for a long time. He was an elevator mechanic with a deep understanding of large scale multi phase electrical industrial plants. Problem was perspective, he forgot what it was like to be a blank slate, to not be able to picture electrons moving around a circuit and went into far to much detail to early. I ultimately had to unlearn allot of things the hard way, by electrocution aha. But in all seriousness, rewinding a three phase generator taught me more than any book.
@DM-fz3ly
@DM-fz3ly 5 жыл бұрын
Dave, I 100% agree with your critique. SKIP the theory, jump into the first breadboard circuit! The overall kit reminds me of my first chemistry set I got back in about 1969. As I recall the chemistry set skipped all the deep theory and was a series of "recipies" to show simple concepts like PH color change, evolving CO2, etc. How to make a better kit?? > have all the parts bins be general purpose storage NOT size fit for say the pliers or the cutters. Just have a drawer where the tools go. That way as the student gets better tools they can still fit in the tool tray. >have a tray for resistors with ranges markings to sort the resistors, a tray for leds, a tray for wires, a tray for switches, etc. >The video so so distracting that it washes out the actual knowledge that is being delivered. > the Indian accent? is one of the hardest to understand for me. Have a professional voice without the heavy accent. > Overall the IDEA is a good one but they missed the mark. > If the kit eventually became a portable lab that could grow it would have been a winner. >The book should have jumped right to breadboarding their first circuit. How about an EEVBLOG electronics lab for beginners??
@whatwhat960
@whatwhat960 5 жыл бұрын
it needs a non-threatening funny cooky english guy as a teacher. it just seems very Bollywood
@simontay4851
@simontay4851 5 жыл бұрын
Yep. I could hardly understand what they were saying.
@WhiteDieselShed
@WhiteDieselShed 5 жыл бұрын
Pet hate of mine when someone has music playing when they are talking. (Mand lab video)
@Blitterbug
@Blitterbug 5 жыл бұрын
Those electricity edutainment vids were truly horrible. I'm with you, Dave. Two minutes of that crap and most kids would be running for the door, any possible futures as electronics engineers or hobbyists in ruins
@ctrlaltdel02
@ctrlaltdel02 5 жыл бұрын
Dave - one of the few people on earth who knows how to properly show QR code in video
@TecrasTrash
@TecrasTrash 5 жыл бұрын
Oh hey, the DIN 1451 is the font used on German street signage and stuff. Put white text on a blue background for proper Autobahn resemblance
@wingshooter1967
@wingshooter1967 3 жыл бұрын
We called the accelerator switch in the ELT10 a G switch and it needed to be tested once a year or every annual inspection. The two screw terminals were for a remote switch in the cockpit for remote activation and testing. I am a A&P aircraft mechanic and worked on many aircraft with those exact locators installed in the aircraft.
@graemeallan54
@graemeallan54 5 жыл бұрын
merry christmas dave thanks for a year of learning the fun way!
@StevenOBrien
@StevenOBrien 5 жыл бұрын
"Don't eat the desiccant. Trap for young players" lol
@profpep
@profpep 5 жыл бұрын
Those acceleration switches often use magnets, one to hold it off, and one to hold it on.
@Carambal81
@Carambal81 5 жыл бұрын
I thought so as well. Would have liked to see a demonstration :)
@RaenYrtham
@RaenYrtham 5 жыл бұрын
ElectroBOOM should've made those videos!
@StillCloser
@StillCloser 5 жыл бұрын
That's how box cutters look in Australia... :D
@Hammerjockeyrepair
@Hammerjockeyrepair 5 жыл бұрын
its identical to their butter knives aswell!
@Tigrou7777
@Tigrou7777 5 жыл бұрын
About 50% of the video just on that electronic kit. I would have preferred more time devoted on the other stuff.
@jamesmdeluca
@jamesmdeluca 5 жыл бұрын
And Happy New Year! I forgot to mention that the supplied wire-stripper is missing its adjustment screw/nut combo that fix the closing limit for the wire gauge. Yes, there needs to be something to keep the handles from spreading so far (like another screw/nut combo to limit the spread!
@AndySpicer
@AndySpicer 5 жыл бұрын
Why did we spend 27 min on that kit?
@injoelsgarage3934
@injoelsgarage3934 5 жыл бұрын
Thanks Dave! Merry Christmas to you and yours. Joel
@MarttiPaalanen
@MarttiPaalanen 5 жыл бұрын
Couldn't wade through all the numerous commentsso this may be noted already, but: the 8748 in the aircraft xponder alt meter in a vintage processor of the MCU-48 series, not just an EEPROM. It has 1k of EEPROM program memory if i recall correctly.
@AmesiesCorner
@AmesiesCorner 5 жыл бұрын
I'd wager that kit is more for a trade school course.
@mycosys
@mycosys 5 жыл бұрын
Absolutely - it is made as a high school or trade school syllabus taught to a class, hence the issued kits that are easily stored when the class ends
@-DeScruff
@-DeScruff 5 жыл бұрын
Yeah its totally something I could picture being in my 7th grade 'Tech' class, which was about teaching things like Simple Machines, Gear ratios, exc.
@bobriemersma
@bobriemersma 5 жыл бұрын
Well there are those "cram a secondary skill" courses to help one qualify for software-serf work visas. Enough can be memorized for parroting if quizzed on the matter and babbling about rubbing silk on a glass rod might be just the ticket.
@bloodyl_uk
@bloodyl_uk 5 жыл бұрын
Such a vast difference between the videos and the kit and textbooks themselves.
@Paul--W
@Paul--W 5 жыл бұрын
Great episode but wish you’d spent less time on the kit.
@Distinctly.Average
@Distinctly.Average 5 жыл бұрын
When i got into electronics as a kid all the theory would have turned me right off. I wanted to break, modify and fix things. I needed no maths when I built my first radio, astable multivibrator etc. Even when I was fixing and modifying CBs and AV kit I didn’t really need to know all that stuff, it all came later on. So for me, this kit seems to try and be all things but doesn’t quite get it right for any of them. Either make it lots of fun for kids, or go for a more advanced kit. Also not too keen on the amount of material used that will inevitably end up in land fill. Impressive in many ways, but just not quite there.
@f-s-r
@f-s-r 5 жыл бұрын
I think that the electronics kit should have a separate book with "in depth" explanations, and the main book just go straight to business.
@PauloConstantino167
@PauloConstantino167 5 жыл бұрын
You need to do some more vintage computer teardowns. I'd like to see an old music synthesizer teardown as well.
@dismayer666
@dismayer666 5 жыл бұрын
"I just found a nut here..." Nuts.
@xjet
@xjet 5 жыл бұрын
Was it just me, or did Dave's voice sound an octave higher after he found that nut on the bench? :-)
@GuyNChai
@GuyNChai 5 жыл бұрын
I loled when he said carry ur board around
@stationplaza4631
@stationplaza4631 5 жыл бұрын
My favorite Aussie of all time...Wishing you all a Very Happy & Most Excellent New Year!
@KulbhushanChand
@KulbhushanChand 5 жыл бұрын
12:04 The loose nut and screw that was found in the beginning is a part of wire stripper, used to adjust the cut depth.
@ThomasCouey
@ThomasCouey 5 жыл бұрын
That screw that you found rolling around with the strippers probably came out of them, causing them to open wider than normal.
@ksfixitmangaming617
@ksfixitmangaming617 5 жыл бұрын
Merry Christmas to you and yours from Kansas in the good ol USA. I hope you and your family are doing well. Thanks for all you do.
@ksfixitmangaming617
@ksfixitmangaming617 5 жыл бұрын
wow that electronics kit is great.
@user-dj1hy6zc6q
@user-dj1hy6zc6q 5 жыл бұрын
That's a real cheap crusty ELT. You absolutely figured out the on/off/arm switch and its purpose. You also figured out the g-switch and remote activation terminals. The remote activation terminals often just go to a switch in the cockpit for the pilot to activate during mayday, if they so choose. A secondary g-switch or water activated switch doesn't ring my bell. The underwater locator beacon is a separate device with its own activation circuitry. An ELT isn't designed to be used under water anyway. Modern ELTs are more complex than the one in this video. Same basic functionality, except that a modern ELT often also transmits a unique identifier code so that the receiver can -- cross-referencing a database -- identify the aircraft registration number, make, model, and owner. This comes in particularly handy when trying to identify which aircraft is transmitting a false warning. Accidental ELT transmissions are way more common than purposeful ELT transmissions. Without a unique identifier, its harder to pinpoint which aircraft, out of 30 parked in close proximity at an airport, is the offender. Of course the unique identifier and accompanying information is also very useful in the event of an actual emergency. Also, a modern ELT usually has a intermittent/automatically resetting g-switch. After g-switch activation, it keeps transmitting until the main switch is turned to off and back to arm. There is no reset plunger to push.
@MourningStar888
@MourningStar888 5 жыл бұрын
"Don't eat the dessicate pack; Trap for young players!". I LOST it, when he said that! 😆😆😆
@johnnybgood2674
@johnnybgood2674 5 жыл бұрын
Those older ELT's installed on most smaller aircraft were not exactly foolproof. As a mechanic I remember frequent false transmissions happening. The tower would announce on all frequencies that an ELT was going off and we would scramble to make sure it wasn't one of ours. You didn't want to have the FAA nocking on your door as you could be fined. In operation, though you didn't need to turn it on and off each flight, it stayed in the on position. For most small aircraft it was located in or near the baggage area.
@kartridzuuzpilde-itserviss9710
@kartridzuuzpilde-itserviss9710 5 жыл бұрын
I would not Buy The KIT for my kid :D
@clkinder1
@clkinder1 5 жыл бұрын
I would always contend that the practical usage should always be displayed first... As a (younger) person, I didn't care about how SPI worked on my Arduino, or how Java displayed an image on the display... I only cared that it did... I would say, even into college I would have liked to see this...
@jamesgrimwood1285
@jamesgrimwood1285 5 жыл бұрын
What that kit needs is no printed book, and instead a companion website that is the instructions. That way you can have a hands on practical introduction, and all the nerdy theory for those who are interested.
@moseymen
@moseymen 5 жыл бұрын
We used to call this device as blind altimeter. EPROM is for Gray Coding (In fact Gillham code)
@VoidedWarranty
@VoidedWarranty 5 жыл бұрын
The nut and screw go in the slot in the strippers. Where you tighten it in the slot changes the minimum closing point and keeps it from springing apart too far
@lesliefranklin1870
@lesliefranklin1870 5 жыл бұрын
Kids should not be taught too much theory until they first encounter the "magic smoke" being let out of their circuit.
@rayceeya8659
@rayceeya8659 5 жыл бұрын
Wow I got an ad for energizer batteries, pink bunny and all, as soon as you said battery and voltage.
@00Skyfox
@00Skyfox 5 жыл бұрын
The way the ELT works is that normally it's left in the armed position all the time. When it's not transmitting it really doesn't suck down any power, and if I remember right they're wired to the aircraft battery so the 9V battery is only a backup. The ON position is only used for testing the transmitter within the first 5 minutes of the hour (3 to 5 sweeps of the transmitted tone maximum). With a crash or a very hard landing, the force sensor does make contact to trigger the ELT and make it transmit, which it does continuously until the battery dies or it's reset. That's why it's standard practice to tune in 121.5 after a hard landing to see if you're needlessly transmitting the ELT beacon. Yes, it does have salt water (or water in general) detection in case of a water landing that isn't hard enough to set off the G-force sensor. I've never seen an ELT with an off position on the switch, only ON and ARM. There are different models of course.
@theandnewman
@theandnewman 5 жыл бұрын
The video felt really bad, way to many bad overlays and why the sound effects? The information was all over the place, if a child is supposed to learn something they have to be excited, to much technical information will make them leave and do something else! Teach the technical stuff while doing the exciting stuff, and over time! I would NOT but that kit! I'd rather teach the kids myself as I'm sure they'll be more excited and want to learn more
@GoldSrc_
@GoldSrc_ 5 жыл бұрын
100% agreed, for beginners practice should come first, theory later. Anyone can understand that a LED will only light up in one direction but they don't really need to know why first.
@29C1C
@29C1C 5 жыл бұрын
This kit might be where Stewie learned electronics
@billmoran3812
@billmoran3812 5 жыл бұрын
When I was a youngster learning electronics, I somehow had the ability to dig into the theory only as far as I needed to understand the principles I needed to know at the time. I kind of started in the middle and moved forward and backward over time as my education an math / physics skills permitted. I agree that the physics behind electron movement and charge is beyond the younger experimenter, but at some point they need to learn it or they will be lost trying to understand more advanced concepts. Both methods of learning are valid: the theoretical and the practical. But neither suits every age or knowledge level. I think the best approach is to teach the theory to older students, and gloss over that with the younger ones. I remember many books I used back in the day would offer “sidebar” articles that explained the theory in detail, for those who wanted a more in depth discussion. As an engineer, I found it helpful to at least know what I don’t know, so I can get more information and drill farther into a specific subject when I need to.
@ernieschatz3783
@ernieschatz3783 5 жыл бұрын
"Don't eat the desiccant bags; trap for young players!"
@yueibm
@yueibm 5 жыл бұрын
4:01 All the electrons are going to fall out! That's what I was screaming in my head.
@ThinkingBetter
@ThinkingBetter 5 жыл бұрын
Well, I actually like the combination of theory and playing with real electronics this kit seems to offer. Too many fail to truly understand the physics involved because they never combine play and theory.
@justin.campbell
@justin.campbell 5 жыл бұрын
I made the regular Rc2014! Recomend it if you love old computers and the z80 cpu!
@darkphotons101
@darkphotons101 5 жыл бұрын
“This is the symbol of resistance “ no, omega is the symbol of resistance, that is the symbol of a resistor.. sigh..
@DrakkarCalethiel
@DrakkarCalethiel 5 жыл бұрын
I would have LOVED this kit when I was 6 years old. That kit is just outstanding!
@OffTheBeatenPath_
@OffTheBeatenPath_ 5 жыл бұрын
I would have loved it when I was 5
@scotshabalam2432
@scotshabalam2432 5 жыл бұрын
There were better kits from radioshack that had more stuff, better projects, seriously projects like alarm clocks and radios, and didn't even take up as much space also the most expensive kit with like 250 projects only cost about $150US in 80s-90s dollars this is probably cheaper when adjusted but even the cheap kits that ran in the $60 range had more projects than this. I agree with Dave that they spend too much time hitting people over the head with electronic engineering dogma a lot of which is theory and may even be debunked by the time those kids get to college too when they should focus on fun because most of us get into it for the fun of fixing, modding, and making things and not debating theories with Einstein and Hawking.
@Dragonex60
@Dragonex60 5 жыл бұрын
@@OffTheBeatenPath_ I would have loved it when I was 4 tbh
@fourtwozero
@fourtwozero 5 жыл бұрын
I would've loved it when I was 7!
@akhtarkh
@akhtarkh 5 жыл бұрын
The maximum retail price of the components is not more then $10 in this kit.
@Schwuuuuup
@Schwuuuuup 5 жыл бұрын
I am not a native speaker as well, but the Indian English in the Mand Labs video totally puts me off. Like bad sound quality, bad language proficiency is a real be downer.
@oleenick
@oleenick 5 жыл бұрын
The NVIDIA GTX 1070Ti was a graphics card released after its base model the GTX 1070. The 1070Ti slotted strangely in between the GTX 1070 and pre-existing GTX 1080, leading people to wonder why it existed. There was no need for the gap between the 1070 and 1080 to be filled, but NVIDIA saw it fit - probably as there was an excess of GP104 GPUs lying around... Hopefully that fills you in!
@asireprimad
@asireprimad 5 жыл бұрын
first mailbag video that got me bored - 25 min about this mand lab kit with lots of plastic and cardboard material with a few electronic parts is too much and from what i see, i would be more negative about it than you. as a child, i got the Kosmos electronics kits and loved it (the plastic box with the parts inside and the top is kind of an oldfashioned breadboard)
@MrFunkia
@MrFunkia 5 жыл бұрын
Speaking as a mechanical engineer, and sometime teacher I'm only interested in making circuits with LEDs, buzzers etc. It is really a boring waste off time going through all of that theory, when you're a youngster.
@elvinhaak
@elvinhaak 5 жыл бұрын
Wow! Would have loved to get such a kit for christmas (or Sinterklaas here in Netherlands) when I was young. Also would have loved the extra explaination to read just to sit in my little corner with the electronic stuff and read a little, or in the back of the car or on holiday somewhere ... Simple and not toooooo long explainations and you can find the extra's later (and of course don't read the stuff that's too complicated when you are 10 years old). Nice!
@Mythricia1988
@Mythricia1988 5 жыл бұрын
Copy pasta of my reply to another comment, but I agree wholeheartedly about the technical versus practical / fun aspect of learning. And not only for kids - I think it applies to people of all ages. What matters is their experience level with the topic - not their age. I spend some time teaching programming locally and to a few friends. And my mindset has been to get them doing cool shit as fast as humanly possible! Even if that means having to skim over some genuinely important aspects at first. Once they're interested and enthused, they will automatically care about the details, because now they understand why the details matter. Thus you can start to merge the technical difficult stuff with the fun / easy stuff, because they have a reason to care, it's not just being forced down their throat. Going with the technical details right out of the gate will put off people who may very well be EXCELLENT engineering minds, that just happen to have a different learning preference, before they get a chance to discover it. Shame, since so much education is done this backwards way. I've had so many positive responses to my way of teaching, I really feel that it's not a fluke. I've had people who have previously taken serious programming classes come back to me and tell me wow, I understood more in 1 hour with you, than I did after a whole year of programming in school or whatever. Which I find shocking because I am not a teacher nor an amazing programmer. But from what they tell me, in school they were just instantly overwhelmed by technobabble and genuinely hard concepts, and so they never made it past that initial brick wall. I have spent years struggling to learn and comprehend this stuff myself (as a slow learner), and as a result of having suffered through the difficult bits, I think I have a good understanding of what parts actually matter to a beginner, and how to stay motivated. I think geniuses probably shouldn't teach the introductory stuff in any topic - I think it should be taught by people who struggled but eventually understood the subject matter, because they understand where the difficult parts are. Someone who just breezes through it will only get angry that their dumb students don't breeze through it also. That's my experience anyway... I'm sure someone is about to tell me I'm wrong and that learning the hard way is the only way and if you can't make it you are dumb, but, hey that's how the Internet goes!
@elektronikk-service
@elektronikk-service 5 жыл бұрын
As a child, Christmas was a great time. Because I got new things to take apart.... To be honest I am over 40 and still not grown up. After over 20 years in the industry, I know that it is the curiosity that drives the knowledge. Not the other way around.
@MrJamesonStyles
@MrJamesonStyles 5 жыл бұрын
I think I speak PC nerd well enough to decode "The 1070ti should not exist". It's probably referring to Nvidia's ridiculous market segmentation across the Pascal series of GPUs. They release a series of cards, then either slightly buff or neuter each version of the card to create cards in between that really aren't necessary. This produces a lot of confusion for consumers. Though what I would say is that the DDR4 version of the GT1030 REALLY should not exist, because DDR4 is terribly slow for a GPU compared to GDDR5 and the consumer likely won't know what they're getting unless they know the difference.
@panopolis8051
@panopolis8051 5 жыл бұрын
you are spot on I think, it's like a bastard child of the 1070 and 1080. although having a halfway point makes sense, nvidias actual implementation of it does not
@andytipping70
@andytipping70 5 жыл бұрын
theres a choice to read or skip the complex explanation. Ive been playing with wires since i was 5 thats 50 years - and I'd still love a go with this kit.
@semifixtion
@semifixtion 5 жыл бұрын
I agree with you on what sort material would be better to start off with for introducing beginners to electronics. I know you can't compare apples and oranges, but as a musician it makes sense to me to draw some paralells to when I was a beginner gaining interest in playing music... I can imagine how much importance I would have vested in things like how sound waves work, frequency, music theory, and the history of classical music, etc. back when all I wanted to do after I finished my homework was crank up my little entry-level amp and try to sound like Jimi Hendrix
@williamsquires3070
@williamsquires3070 5 жыл бұрын
Propellor for the motor; ROTFL! 🤣
@venkatperla
@venkatperla 5 жыл бұрын
The nut and the screw belong to the wire strippers ,they are used to limit the min cutting size
@8bits59
@8bits59 5 жыл бұрын
Polly put the kettle on. I love it.
@dennisseuferling815
@dennisseuferling815 5 жыл бұрын
The best out I ever had as a kid, started each project with a schematic and build instructions. Then followed with some troubleshooting and ended with a few insightful paragraphs on the theory. In my opinion that is the most effective way to implement the theory at an entry level.
@TheNewFaceOfHSP
@TheNewFaceOfHSP 5 жыл бұрын
I was the kid who read all those old books and learned by myself. I remember LOVING the history facts and technicalitets of what I implemented. If you are 7 yo. kid reading an electronics book, you are more than capable of skipping around in the book and jumping over the boring parts if you just want something to work. But in this way, I might as well have read those interesting facts about silicone and boron atoms, because the information was kept localized and not as an appendix. I would never buy an electronics history book, but I would definitely buy an electronics book. These things help it "click" for me. I need the full picture of what I'm doing, I feel like I'm working blindly like an idiot if I don't know the reasons WHY we are doing stuff, who invented it, for what purpose and what THEIR struggles were to create the tools I'm using. I'm a software developer by day and mechanic (with electronics focus) by night these days. I apply the above liberally to all learning to this day.
@VintageTechFan
@VintageTechFan 5 жыл бұрын
I remember my electronic kits as a kid .. the part "after one evening it would be all over the bench" is so painfully correct. Well, not totally .. I was working/"playing" mostly on the floor back then and well .. the vacuum got somewhat noisier and I was missing a few more resistors.
@tuttocrafting
@tuttocrafting 5 жыл бұрын
I would start the kit with Breadboard layout and how to glow a LED. And then after a fiew lessons I would revisit previous experiences/lessons with more details.
@vk6xre
@vk6xre 5 жыл бұрын
Hi Dave , ELTs are typically mounted in the tail of an aircraft. The terminals go to a switch on the panel (dashboard) so they it could triggered by the pilot pre crash or in the case of an emergency landing in say a remote area. The batteries are part of the maintenance schedule and are replaced by date.
@BruteClaw
@BruteClaw 5 жыл бұрын
I started my 8 year old daughter out on soldering together a SparkFun Simon Says game together. And after we got done putting it together, explained to her the basics while playing with the kit.
@AaronAJaeger
@AaronAJaeger 5 жыл бұрын
Looks really well done, obviously a huge amount of thought went into it. But I completely agree with the theory being just way too much. If I had to learn music theory before ever picking up a guitar I would have never played a single chord, learned a single song, or even strummed a string. I learned to play by ear and THEN once I was somewhat decent at playing the general thirst for understanding more about how music works and how to write my own songs kicked in and I then willingly had the urge to understand the more advanced building blocks of music. I think if someone younger was to start with this it would be helpful to have some guidance. Being an engineer I always go straight to showing my kids how to build circuits. The immediate demonstration of using electricity to create practical parable results creates an immediate interest. Theory bores them to death and they can build a basic electronic circuit knowing the most basic principles. As they've gained experience they've never needed to know about atoms. I mean who does? It's only theory anyway. I love the science but it's even more remote to electronics than music theory is to music. You can be brilliant at building electronic devices without ever knowing a lick about negative ions or potential. I will say that once you get to a point that math is extremely useful...actually absolutely necessary as anyone who had done anything with electronics well quickly realize. Far more than any theory about things we can't actually see.
@EEVblog
@EEVblog 5 жыл бұрын
I can remember trying to learn French (my company was French and offered free in-house lessons), I lasted two weeks before giving up. I just wanted to learn some words and simple phrases to get started but we had to learn all the theory stuff first, it was boring.
@simontay4851
@simontay4851 5 жыл бұрын
French is an arrogant pretentious language anyway.
@tomaszwota1465
@tomaszwota1465 5 жыл бұрын
Just as with adults, kids are not a monolith either. I for one like the theory, when I started with the guitar, I immediately started learning music theory alongside my first chord shapes. When I learned programming, I quickly jumped on to read standardese. When I learned English or French, I first learned how all the letters and peculiar letter combinations are pronounced. Of course you have to learn some of the "theory" (grammar) of a language, that's essential. Now that I start to dabble with electronics, I also enjoy the theory side of this stuff.
@mr_gerber
@mr_gerber 5 жыл бұрын
@@tomaszwota1465 I completely agree with you. I thoroughly enjoy the theory as much as the practical side, and have done since I was a little kid. And I don't buy OPs argument that it's unnecessary to learn about things that we can't even see. And "it's just theory anyway"? What does that even mean?
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