EEVblog
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- เผยแพร่เมื่อ 28 ก.ค. 2018
- More than an hour of Mailbag!
Forum: www.eevblog.com/forum/blog/ee...
SPOILERS:
Sony DVO-1000MD medical device video DVD recorder teardown
8:09 Security ISA card teardown from the 1980's
18:39 Power Grid the board game!
25:02 USB soldering iron
27:21 TI-nSpire CAS+ calculator PROTOTYPE!
35:28 DIY JBC/Hakko soldering iron controller
www.team-ncrc.com/shop/produc...
41:49 UV LED lamp for PCB exposure
45:10 DIY battery spot welder
www.keenlab.de/index.php/port...
51:44 10W Laser Diode circuit PCB design review
www.kickstarter.com/projects/...
1:00:00 EL light teardown
1:02:41 IC2 rotary encoder Kickstarter
www.kickstarter.com/projects/...
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I think you were supposed to use the UV light on the unseen note.
+EEVblog Dave, I'm 90% sure that 'unseen note' was written with UV sensitive ink, maybe the UV marker was a hint?
Edit: Yep. UV led as well :D
Doh! Didn't even occur to me. I just thought it was a joke because I always toss the note aside first.
EEVblog hope you did not threw away that note already.
Nice idea! But there is no hidden message :).
EEVblog fran on fran lab got one of these games in the post too, maybe you can play it over the Internet by sending game tactics back and forward.
I think big Clive got one of those soldering irons in the mail...
They shouted this at you many times during the live
22:10 Aussie tries to explain that the map is upside down... Meanwhile he is standing his whole life upside down.
You should totally do a livestream of you and David playing a game of Power Grid. I would love to watch that.
"It's upside down!" Well... it IS the austrailian expansion :P
All the 'strayans gonna fall out!
Australia from North America's POV
@@MarkFunderburk Not just NA the entire north hemisphere!
@@MarkFunderburk The game was made in Germany. Consider yourself debunked. ;-)
No, it's up the right way. Nothing says north is up.
Hi Dave, thanks for the shout-out for my JBC soldering iron controller! A quick note; your power supply seems to hit its power limit and droop some voltage under load, which can be seen at 37:30. While heating the controller (and the JBC tip) can draw 8A. This can explain the "slow" first heating and sluggish step response (to the some extent) when you apply wet sponge.
Thermosphere hey that's a really nice controller there mate!
Thanks Ben!
Gotta say that is a pretty decent JCB controller with a good eye on its construction.
I worked with something very similar to the "Safe-Seal" during mid 80's period called X-Lok50 security card . . . it was a hardware "key" for the hard disk - generated a password protected login screen for the PC in the DOS/Unix environment, before the days of password protected boot/BIOS . . . . I think it also did encryption of HDD, and other useful security functions . . . it modified the MBR somehow so HDD would not boot if you simply yanked the X-Lok50 security card in attempt to bypass login . . . . it was a very sophisticated device, cost about $500 USD back then
Neat, thanks.
Thanks again Dave for all of the great knowledge delivered In a way that doesn't induce sleep, you're the best
Great video as always Dave! I'm consistently impressed by your wealth of knowledge.
DVD Drives sticking shut like that is quite common, happens with CD/DVD/Blue Ray drives that are tray loading..
due to the spindle, and the magnet that sits on the top side of the disk, to hold it in place while spinning, if it's not used very often, the metal on the spindle becomes magnetised, combined with the magnet on the top, it makes it too strong, so when pressing eject, the assembly that holds the motors and laser etc can't pull down and move the motor out of the way for the tray.... all because the magnet is too strong... put a disk in it (once it's open) and keep a disk in it, then it will always open (I use the clear ones from the top of blank disk spindles) - I always keep one in any of my drives/CD players for this reason :)
Oh, and I love Powergrid, it's a GREAT game! :D - first played it about 10 years ago :)
Super interesting to watch this compared to the live recording... Gives a real peek into the production / creating side of things! Thanks Dave!
Schrödinger cat badge the best of the mailbag :)
50:27 Of course you can do it in the lab. All you need is an explosion containment pie dish, and you're set.
Oh, you didn't get the beauty of that small 365nm torch...
It uses just one 1.5V battery to feed the LED that can be driven minimum by 3.4V.
An elegant thing with much of interesting physics behind
i have been using my ti nspire cas as every day calculator almost 8 years. Its a beast
In that card with LCD I think he was marking the place the battery is. Maybe under the layer in that place there is the battery. Just guessing.
Yeah I'm pretty sure that's what it was for. In case he did a tear down on it.
Oh snap. That LTC6820 is really neat! I've been looking for something just like that, except for I2C. LT has some really unique solutions to problems you never thought you'd have... Maybe I can migrate my project to SPI instead, just based on that chips existence.
The classic Al Bean Moon Fix - hit the top with a hammer.
Hey I found Fran. How Fran.
Glad you included the footnotes in the segment with the little EL panel explaining how they work. These things seem to run forever and piss away bugger all power. The phosphor slowly degrades with use, like the target screens on magic eye tubes and CRTs, but I have one that's been running nearly continuously for over two decades and it still puts out enough light to find the bathroom light switch in the middle of the night.
This is my favorite segment!
This mailbag is the best in years so far.... at 25mins right now... but it is wow
also I think the "no battery" thing on that security pin credit card was actually a crossed out section showing you where the battery is in case you took it apart make sure you didn't chop the battery
"let's get straight into it" and actually gets right into it. Good Guy Dave.
I personally have the kWeld for about 6 months now. It's a great spotwelder and i'm glad Frank got on this mailbag. For a hobbyist its a perfect way to create your own li-ion battery packs. Would love to see him assemble it.
Dave, maybe you should consider filming Kickstarter Mini Mailbags... When an appropriately-labelled package comes in, perhaps write a due date on it (two weeks perhaps?) with a highlighter pen. I bet you could have helped quite a few great Kickstarter campaigns over the years.
kickstarter guys should insert a sound making device that plays when the package is not moved within a specified amount of time.
@Masterscheffe Would get blown up by customs.
think of the publicity for your KS project, though... ;)
53:05 LOL, "at 100KHz up where you reach space". :D
He's such an electrical engineer!
We need a live stream of the Jones family playing Power Grid.
That calculator was amazing for my calculus classes.
Power grid is awesome! I've played it a few times and it's a lot of fun!
555K subs! Surely that's a major milestone!
Space, the final frequency, these are the voyages at 100KHz...
Power Grid is a great game. Still widely popular. We sell it in our shop.
you have to power up that soldering iron. "pull" off the tip protector. it DOES WORK for.. granted very portable applications (4.5 - +6) volt
Morbid? With you Dave - knowledge is power. The more we know the less we fear right? :D
"It's live, it is real..." haha love it ;)
Lol I was thinking "Those got some grunt" when you said those cables were grunty.
The old TI-Nspire calculators were quite difficult to use. The new TI-Nspire CX ones added a color screen, had a separate keyboard and numpad, rechargeable battery, they also added a very nice touchpad mouse, it was really nice to use. The TI-Nspire Series calculators are pretty much Linux computers, you could "hack" the firmware and make them run all kinds of software including emulators and games, got mine to run DOOM!
Not quite Linux; they run the Nucleus RTOS from Mentor Graphics (which is now part of Siemens).
Nice info, good to know. Wasn't it Linux based? I remember being able to get to the terminal and Linux commands working.
They did implement the POSIX layer so Unix/Linux software will work on it.
I have a 89-ti and it is so easy compared to the first gen nspires. The new color ones are pretty slick though.
I've still got my Ti nSpire CAS and it was quite a rough learning curve and it definitely could have had a better interface but still probably the best calculator I've ever owned. I haven't looked at the newer revisions and I probably shouldn't so I don't buy one!
Power grid is my favorite board game.
There is a whole following for board games like this. They are made in smaller numbers and often have a limited amount that are produced. Another game I like is called "Hive". You get a dozen of these domino looking pieces, but with a picture of an insect on it instead of dots. Each different insect can move a certain way, kind of like chess pieces. The goal is to trap the other players queen bee.
Gotta get me one of those soldering iron kits!!!!
Ha that's a funny idea.
Ow. Now my head's pounding. Being a cultured Adelaidean I have a pretty low tolerance for the enthusiastic East Coast Strayan accent. Crikey Moses! Good thing we're all one big happy country... :) Very good channel mate. New subscriber looks like I have a lot of back catalogue to go through...
I have a couple of those USB soldering irons, they actually work quite well for quick repairs, in fact I eve built a kit oscilloscope using one once while we were camping in the Mohave Desert. It worked OK, that button is a sensor to activate the tip when you are holding the iron so it can sleep when resting in the holder. I plug it into a home built USB power brick that has 5 18650's reclaimed from old laptop batteries. I wore my first one out, but the one like you have there actually still works now 3 years after I purchased it. Once I even used it to solder some 12 volt heavy duty wires for my brother-in-law's Class A motor home, and it is still working well. Now that took some time to heat up with that tiny tip. That screw end you unscrewed to take off the plastic really is supposed to hold the tip on, that plastic shield pulls off.
Aren't you curious if there are any videos on the HDD? 😁 I would hook it up to my laptop using an external HDD interface to see if there are any MP4 or AVI videos on it.
I guess MPEG2
I love Power Grid. Played it a few times. Really very enjoyable with other boardgame geeks :)
I think the X-Battery thing on the card was to show you where the battery was in case you did a teardown of the card, so you didn't cut in that area.
Those i2c rotary encoders are pretty cool! Been designing a midi controller for my step sequencer, and I need a good few rotary encoders, was thinking of going down the i2c route with the display, so i might be getting a few of these to use with it! :D great video :)
Don't need a driver for the light strip. Just plug it in the wall. Often used in aircraft.
Your comments on the nspire are why I will always stick by my ti-84.
Power grid is a pretty good worker placement game
Yeah its currently ranked 31 on bgg. boardgamegeek.com/boardgame/2651/power-grid
It has some nice economic aspects like auctions of generating sources and supply and demand driven prices related to energy raw materials (coal, oil, wood, uranium, garbage).
21:55 This is the work of a master troll.
"Its up side down" of course it is Dave. Australia is up side down compared to the rest of the world.
Rest of the world? For people living in the following places, Australia seems pretty normal.
Antarctica, Chile, Argentina, Falkland Islands, New Zealand, Îles de Boynes, South Africa, Brazil, Lesotho, Namibia, French Polynesia, Paraguay, Swaziland, Botswana, Mozambique, Madagascar, Bolivia, Zimbabwe, Réunion, Tonga, Fiji, Mauritius, Vanuatu, Peru, Zambia, Angola, Malawi, Samoa, Democratic Republic of Congo, Comoros, Solomon Islands, Papua New Guinea, Tanzania, Kiribati, Indonesia, Tuvalu, Seychelles, East Timor, Tokelau, Republic of Congo, Ecuador, Kenya, Burundi, Colombia, Gabon, Rwanda, Somalia, Uganda, Equatorial Guinea, Maldives, Nauru, São Tomé and Principe.
Eh - rest of the world from place of manufacture ...
That's also why the display of the soldering thing was upside down
@sexto empirico the following places? I have never heard of these "places". And you even wrote Fuji wrong (u wrote Fiji). Thats a company, not a place. Anyway, stop naming areas in your garden. Obviously australia is upside down.
Love the battery spot weld kit, followed his videos and the blog chat. Everyone should check out the kit Frank built.
Scotty, I trust YOU!
in my experience with CD and DVD drives, I've found that dirty limit switches cause the majority of problems. I usually spray a bit of contact cleaner in each and then actuate them several times. You can check them with a meter and identify ones with resistance when closed.
That board game is great, will wait for your comments on that.
I used the next generation after the CAS calculator shown throughout high school and uni... Sure a lot slower than the scientific... But it is really a godsend! Will bring it to the next EEVBlog meetup and show you around it if you like Dave.
I've heard a bit about those IDO encryption modules. The actual encryption is done in the WD2001 chip and everything else around it is for support! I would imagine the processor is a 68000 or similar.
Found the datasheet for the WD2001 in an old Western Digital databook. In the book, it says, "NOTE: This device can not be shipped outside of the United States of America without authorization from the State Department and Department of Defense." Uh-oh... Dave's in trouble now!! The chip looks like it implements DES with a 56 bit key. No worries!
Ah, that's why I couldn't find any data on it.
Fun fact, the DES key system was discovered to be incredibly vulnerable, and can be cracked these days in under 24 hours!
The US had a restriction on export of cryptographic stuff back in the day. This restriction has since been lifted, except for some military-grade certified stuff.
Maybe it's some sort of old computer tape encryption interface, where a tape drive / streamer is attached on the 15pin connector? To store backups or other data on encrypted cartdriges or reels?
Those usb soldering irons are actually usable and quite decent. You pull the plastic cap not unscrew
magnets1000 nope. Tried to solder outside with it. Wouldn't heat the solder hot enough
Barry Britcher For me it works really well, it was really useful for me as it saved me when i had my presentation and i just brought this thing for quick repairs along with a power bank to use it, i had presentation in a few hours and i was no longer allowed to leave the hall, voltage regulator had gone bad... This thing heated up in 15 seconds and i was able to replace voltage regulator very easily with it. (i did bring all spare parts i had doubt about). Over the year i have used it several times for quick small repairs. Definitely not very useful if you need it to get at relatively higher temperatures (it just uses 5v 8w heater), otherwise great for smaller tasks. BTW I'm 16 so just a hobbyist view not pro.
Lachlan Jansen yea I would imagine it's ok indoors
Ts80 FTW!!!
I bought one a few years back to fix my actual soldering iron and since then its been in my toolbox getting fairly regular use. It works fine, indoors or out. If it wasnt even melting your solder it was either faulty or whatever you were powering it from wasnt delivering the ~2A the iron needs. It cant do high mass joints of course and it relies on a fairly high temp to work at all so you wouldnt want to use it on anything sensitive to that. Apart from those obvious limitations , for non-demanding work its perfectly functional.
It's upside down, I absolutely LOVE that kind of humor...
ya might be here early but I watched it LIVE!
Loukas Hareangas WE'LL DO IT LIVE
Hell yeah K-Weld. I use Chevy Volt 15Ah cells, they tromp lipos from HK. I overcurrent, 2000A, @ 6s charged, 25V, but the sweet spot for me is slightly discharged at 22-23v. Gives a solid 1890A. Tool is untouchable, in quality, for the hobbyist. Frank is an amazing engineer.
I have one of those nSpire CAS calculators, and let me tell you, they are great. The big seller for me is they can do calculus in symbols. That alone was enough for me to love the thing.
I've played Power Grid. Once you figure out the rules well enough to play comfortably, it's a lot of fun. I recommend a group of 3-4 people, all adults or smart kids.
Part of endo stacks, seen lots of them. Nowadays these became part of a standalone unit for recording all patient data in HD, and backup for dvd if necessary
cmon dave, its not no battery, its showing you where it is....
The JBC soldering iron controller could have done with a 5 cent red LED and prevented someone from burning their place down. Those small red LEDs are nice safety measure to be able to see from a distance as you're closing up the shop.
Powergrid is quite famous! I actually want to buy it from a long time!
The board game review was incredibly funny, thanks Dave. I could watch you wig out about the upside down Australia over and over again. Edit: Unbelievably it keeps getting better.
The EL is essentially a capacitor. Conductive back, phosphor middle, and transparent conductive front (with silver bus bar). The changing electric field from the applied AC excites the phosphor layer which emits light. You wouldn't see much more by taking it apart further.
yay mailbag!
That hole at the back of this TI looks like something that mate with battery cover perhaps, for detecting when cover is of to change the batteries.
Show us ya map 'o' tassie .... love it Dave!
Dave: Thanks for opening one of my cheap chinese junk in a past video (not this one). It was awesome to get something on your show for $1.00 (shipped, from China) without having to spend $100.00 just in shipping or whatnot. :-) As always, it makes sense to send the most interesting cheap chinese junk, not just the boring stuff!
i think it shows where the battery is!! not no battery BUT "battery is here"
The soldering iron kit...... lmao took me a min but I'm still laughing..
My sister and her husband love playing Powergrid with their friends.
please do a quick 2nd channel video about the battery spot welder
I have the original Nspire. Haven't used it in years, but I remember it being more enjoyable to use than the one you received. You could swap the keyboard out with an included TI-84 Plus keyboard and it would boot up a TI-84 emulator.
He shot this live to show us how the magic happens.
we need a live stream with dave and mrs eev blog playing
Increasing the pcb size for that soldering iron controller would allow them to do a single sided load which would not only lower the BOM cost but would also help with the assembly time.
Power Grid is a pretty good game. It has an interesting strategy dynamic where it’s advantageous to _not_ be in the lead until the very end.
It might be silly but the reason I don't put the labels on the PCB is because I have them made in China and I don't really trust these low cost providers to not try to sell off your designs if they look interesting enough. They're as useless as possible without the matching schematic.
That Safe-Seal could be an early form of a Trusted Platform Module.
Wow, would love to sit down with my family and play 'Power Grid'! No seriously - but they'd all tell me to bugger off. If Dave invites you to a dinner party soon, you'll know what is afoot...
Of cause it’s upside down, is all seen from the northern hemisphere, at least you aussies are all down under, or is the earth flat - NO! 😉
Something cool about ISA motherboards. Needed expansion cards for everything
Powergrid is up there for one of my favorite board games. Good entertainment.
Those usb irons are actually fine... They certainly aren't going to mystify anyone but for $5 I'd totally say it's a better iron than those PoS mains irons you can buy for $10 on amazon or sometimes in stores, plenty good enough to work on small joints and wires up to about 20AWG.
Power Grid was a fun game. Played it a few years ago.
I used that ti-spire calculator, and YES it was kind of a royal pain to use! I will say the production model had a better interface. One cool thing about the production model: the keyboard was removable, and you could swap in a standard ti-84 style keyboard, which also booted up the ti-84 operating system!
I eventually upgraded to the nspire with a touchpad (without color LCD), which had an infinitely better designed keyboard. It also had the removable keyboard design, but unfortunately ti must have abandoned the idea of "backwards compatibility" because they never actually released any alternative keyboards for that model!
OneManShow You might be thinking of the non CAS model. The non CAS model had a removable keypad, but I don't think the production CAS models did.
dangerousmythbuster: ah- you are right, it did not have CAS. However, my current touchpad version does have CAS, and has the same removable keyboard design... but like I said: no actual swappable keyboards were made for it :( ...good catch on the “non CAS” though!
Pretty sure that its a pun from the game developer side to make Australia upside down ;)
ZeTeCo CH was a hacker/maker camp in Switzerland. It has been postponed indefinitely until they can find a new venue.
Ah, bummer.
I've played power grid a couple times. It's a good game, but it is a little complicated. It's also rather long, the box estimates 2 hours, I'd say plan for 3 hours for your first game.
Powergrid is one of the best euro-game board games to come out of Germany! Fantastic game. It's best played with 4 or 5 players. It takes forever with 6. It's also hugely popular! You can still buy it!
I actually love the Powergrid, but haven't played it in a while. There is quite a bit of strategy necessary, so does require some brains from all players, and I think it can be very long when more than 3 players play.
spot welder is a great. also rotary encoder is a necessary item.
what do you do with the useable part of all the electronics you get (working or fixable items, faulty items woth functioning parts inside or in case of this security card thing the presumably working rtc chip) do you toss em out do you reuse them? would be a interesting video in its own right
The nspire becomes usable when you get comfortable with the shortcuts. Once I learned them it's faster than anything else I've ever used. My favorite two are menu296 and menu297 convert to polar and rectangular. I don't know any other calcs that can do that in so few keystrokes.
I never use the cursor, it's trash, and after the first boot it will stay ready in sleep mode.
I love the damn thing, absolutely my favorite calc.
We used the safe seal cards on NCR ATMs. The ATM ran either VMS or VRX and this thing held the keys.
Wow, didn't expect to see a game like Power grid here. I have this game and I really love it, it's a stragetic game.
The robot expansion is also very nice, than it's also fun to play with 2 players (and robots).
I want you to play (maybe on stream, that would be amazing) power grid. Hidiously complicated. :D