EEVblog 1656 - MAILBAG: ElectroPermanent Magnet, DIN PSU's, Sponge, Beelink EQ14 N150 PC

[@WindedExplanations]

Keep the worn pad with all the scratches, looks cool and has lots of character!

[@Pete292323]

At this rate Dave won't ever need to buy a new PC again.

[@GregBrown-v3m]

Dave with a clean bench? What is this world coming to?

[@ehfCannon]

Electropermanent magnets look ENORMOUSLY useful. Thank you for sharing this, Dave. Thanks for all you do.

[@tom23rd]

Dave, with 3 mini PCs, you can juggle now!

[@aurthorthing7403]

Those magnetic graplers are great as long as no debris gets between the magnet and the item being grabbed. You can place a piece of magnetic wire between the magnet and the object being retrieved and it will have much less holding strength. You can completely disable a magnetis lock on most doors with a paperclip... but the door appears to be secured.

[@imajeenyus42]

Fun fact: the scroll wheel detent in a Logitech MX Master 3 mouse uses an electro permanent magnet to be able to switch between smooth and clicky scrolling. It’s really cool to see this demonstrated - I really want to try making one from scratch!

[@turbochargedbrick]

Faded green is pretty drab but very “lab”

[@MKSense1]

The Estonian magnet can be used in warfare to drop bombs .

[@frysauce2]

I really need to go through all the episodes and make a playlist of the sponge “action”! I think they did rather well for being so thin, but I’d like to see about 1.5x the expansion these ones had.

[@BkR090]

I believe beelink is sending them out of respect. You've got a fan there.

[@XSpImmaLion]

24:39 - 640kb is enough, I remember it... being a myth without proof that Gates spend a substantial part of his life denying, no one ever finding credible evidence that he ever said this, and him even explaining bit by bit why it'd make no sense for him to ever say this since at the time he was actively pushing for computers to have more and more memory. xD That permanent magnet thinguie is super cool though. And I personally agree... the N100 and N150 are basically unbeatable bang for buck right now. Also on the power for performance I guess. People were recently talking about the new Raspberry Pi 5 on a keyboard thing, which is a great kit for a devboard, but for those looking for a mini desktop with as much power as possible with low budget... those mini PCs are where it's at now. Particularly for basic computing, something like a home theater PC, dedicated applications and whatnot. And if the budget is really super tight, you could even go with a Celeron N4000 mini PC which are still around the same power of a RaspPi 5 for less. What you get with RaspPi 5 is community, support, great educational material, tinkering with electronics, and stuff like that. Then, the price is easily justified.

[@razpootis5802]

I see a multimeter hanging by a string. Much concern. 🥺

[@leandrohb9211]

There is a quite good bus charging system from abb which lowers an charging arm onto the roof of the bus while it is sitting on the end of line.

[@PapasDino]

It's amazing what UV light does to workbench ESD mats, mine look the same, especially under something that's covered all the time!

[@mikeissweet]

My favorite segment! Been watching well over a decade

[@mikeissweet]

2 decades, i reckon.

[@mrb5217]

it's everyone's favorite segment actually 😆

[@WreckDiver99]

Michigan does have a "Test Bed" induction charging road that Ford Motor funded a big chunk of it because the government said "Hey, you guys want to do this?"...so...why not. LOL... I see my FB Feed flooded with "Sweden is the first country to have wireless charging roads". I pointed MANY to your debunking video and they all say the same "Oh, he's a hack, these are REAL scientists doing REAL work"...OMFG...the stupidity of the masses scares me.

[@akak5128]

You make your place look any nicer Im leaving! How could you tidy up? Why?

[@doomprophet]

That was some disappointing sponge. I turned on 4K for THAT. lol

[@kd1010163]

It'd be nice if you would use Geekbench to benchmark PCs. Its usage is more widespread.

[@SatyajitRoy2048]

7:07 Color coding of these wires little weird. Black is VCC and Yellow is GND even though there is Red in the group.

[@ElliottVeares]

2:10 Me face palming as "mains voltage" is low voltage, I think what Dave means is extra-low voltage. Low voltage covers up to 1000V AC and 1500V DC.

[@Taliesen.]

It's a 1mm width PCB when installed on the DIN rail. Perfectly logical.

[@fogelmclovin6815]

Holiday mailbag! Yay!

[@imranahmad2733]

I use to use the antex branded sponges but they used to turn to mush after 6-8 months, the cheapo ones seem to last alot longer.

[@KeritechElectronics]

Drone delivery of EEVBlog DMMs? Hey, I'm interested - after you get a drone to fly all the way to the opposite part of the world, haha! Time to make SpongeBob Squarepants mascots now. Nice teardown of that Beelink. Again, they sure do deliver! I'm impressed by how this little gizmo is built.

[@IvyMike.]

Your ''That's not a knife!' is ripping rather than slicing, definitely needs a tickle.

[@unmanaged]

Keep the pad for the workbench if you do keep the darker material

[@TheCommuted]

I think we know what the payload is for the electromagnet. Could do without it...

[@reverend11-dmeow89]

EPM??? Whazzizat!!! did not need yesterday MUST PURCHASE Half A Bakers Dozen NOW if not sooner!!!!

[@unmanaged]

That magnet would make the best water balloon gag on the face of the Earth, get a ai camera that drops a balloon from top of a door for only a specific person hehe 😉

[@EFazy]

When you showed us this mat on your desk, I just bought my new big bench, so I ordered a few meter of this. Now, more than 5 years later, the mat have it's wear, but this makes it real. So I like your used bench mat.

[@michael.a.covington]

Are those sponges the ones that fit a Weller soldering station?

[@cjay2]

Windows 11? Isn't that the OS that sends all your keystrokes and files to MS and other data collection places?

[@mrDarktrooper]

I guess they are using that gigantic film capacitor to pulse the magnet.

[@petegaslondon]

Hey I just thought.. I've seen these magnetic grabby things for quite some time -- but this is different - here's my guess.. strips of rare earth perm magnets that move.. when the outer metal stripes are in-between N and S there's near zero field, when the magnets more about half the strip pitch, it lets the magnetism through If it uses no moving parts and really does just use a coil, I'm pretty impressed - how does this work?

[@gweilo8888]

They couldn't be much clearer in their description: "The design is entirely solid-state, with no moving parts inside". And I can't remotely begin to think how that could be achieved, so I'd love someone to explain it!

[@zachbrown7272]

@@gweilo8888 the wikipedia page does a decently good job. a way you might think of it is a diode in parallel with a resistor and a DC source. With the diode in one direction all the current (magnetic flux) travels through it, so no current (flux) travels through the resistor. when you flip the direction of the diode though, all the sudden current can't flow through it anymore and it flows through the resistor (the thing you're grabbing). the "Multiphysics Simulations" section of the wikipedia page in particular helps IMO.

[@gweilo8888]

@@zachbrown7272 What I'm not grasping is how you can turn on or off a permanent magnet without moving parts and with no current during either the off or on states, only in the transition.

[@stevenbliss989]

You have a scope under ypur bench, obviously not being used. I want it! ....FREE!

[@Kevin75668]

People actually buy special soldering sponges? I replaced the one in my Hakko with a piece cut out of a grocery store 6-pack, and it's outlasted the original by years now. Haven't even used the second side yet.

[@joeylegaspi3515]

Perhaps its a magswitch with solenoids to flip the switch

[@richardbrobeck2384]

Good video !

[@cannesahs]

Does that electro permanent magnet require the canbus adapter control for controlling from gnd/vcc with resistor? I wonder what the idle current is without canbus adapter attached?

[@Matlalcueitl]

It does not, as you can see in the video.

[@cannesahs]

​@@Matlalcueitl Dave kept it connected even using analog input. I checked documentation now. Yes it works. (And dave shouldn't have used resistor.) Overall I would have wanted to see idle current measurement without CAN-dongle consumption

[@Matlalcueitl]

@@cannesahs Ah, I know what you mean now.

[@ibex485]

Definitely time for the old mat to go, it looks awful. Shocking how much it discoloured, and how quickly it went. 😞

[@tubical71]

Hi Dave, great magnet stuff 👍 But I'm a little bit distracted, it's Christmas season and how on earth can you get away wearing shirts and shorts..? -8 deg C at the moment. So what's that widtcha..? And don't tell me you're in Australia 😉🙃🙃 🎄🎄🎄🎄🎄🎅🎄🎄🎄🎄🎄

[@teresashinkansen9402]

Wow another use for Alnico magnets, at this rate in 70 years I might have to use my other hand to count how many uses Alnico has were even ferrite is not better than it.

[@Lee2.0h]

2:40 Dave you seem a bit shaky there everything ok?

[@hermannschaefer4777]

I run Beelink mini PCs for 2 years now and they are.. well.. cheap and just work. Totally fine for holiday homes and such. But I have Ryzen CPUs inside just for casual gaming.. ^^

[@integerofdoom69]

It's been a hot minute since you pulled the old bag out.

[@dedamarsovac]

Quallcomm power adapter has some weird transistor-looking symbol on it. What does it mean?

[@TheEPROM9]

Lets see what cool stuff you got given

[@ZomB1986]

14:55 that thing just screams "Hey it's broke, show the world what crap quality cheap chargers are made out of"

[@EEVblog]

Already done an entire video on that reverse engineering one. And it looked new in the bag.

[@ZomB1986]

@EEVblog don't underestimate how many people don't remove the protection foils

[@sebellblue]

@@EEVblog Ever thought that it might not be a proper charger but one with a few extra chips with some spy or malware since its so randomly sent to you with no information? Sounds like a good reason to take it apart to me.

[@tonyk.8580]

@@sebellblue This is what I was thinking.

[@unmanaged]

Dang I could have used this when I made a crosswalk controller on din mount..

[@jethrobo3581]

What's the occasion? Dave is always barefoot in his lab - today's different!

[@MatthewSuffidy]

I've got into mission creep with what mini pc devices are supposed to do. In most cases my big guns, the desktop with the rtx and ryzen 5900 is the thing to use. I paid something like $50 Canadian for 2 Odroid C1s that are kind of like Raspberry pis, and I conclude there is not a lot of use for them except they are like Arduinos that can be hot programmed with a support OS to do things easily. To me there seems to be bugs with its usb ports and also micro sd port. Someone gave me an old mac mini that I put Fedora Core on just to be a nerd.

[@electronics.unmessed]

Clean bench is killing creativity!

[@unmanaged]

I have some more PCs for Dave.

[@XTSM1]

Come on guys 1M for Dave. Hit that button!

[@drmetpepper6630]

That Zubax magnet may be in use in Ukraine?

[@orange422]

A small servo that releases a hook or similiar is cheaper and has been used for a long time in the RC world.

[@alch3myau]

Wonder how different that electromagnet is different to those magnetic fire door locks... Mmmmm Hm, sure Deviant did a video on that

[@rocketman221projects]

Magnetic door locks are just regular electromagnets. They require power to stay locked.

[@mx0r]

@@rocketman221projectsAlso, by design. When the power goes off, you can exit the building. Useful in case of fire or simple power outtage.

[@simonstergaard]

Unbelievable !

[@EmmanuelNwachukwu-cr5ob]

Amazing

[@jerry1333]

6W is just CPU ;) but it's still very low power pc for it's capabilities.

[@alch3myau]

Woooo! whoa. what.

[@bertblankenstein3738]

Sponge-a-polooza!

[@johnsonlam]

Oh God, the Beelink website is awful, it look beautiful but when I want to search and compare the product, the result is a mess, and the price is totally wrong when comparing different model. The quality control still not good enough, website represent a company's toward's public, their website did more harm than good.

[@plusmanikantanr]

That BeeLink with no upgradeable memory and soldered on chips. I'll pass. Imagine if you want to swap out the RAM or re-purpose the SATA or M.2 connectors with replacement h/w. MiniPCs with all-soldered parts are just e-waste in 2 to 3 years with builtin expiry date.

[@simon7719]

Probably wouldn't buy intel stuff without at least looking into AMD alternatives as they're generally outclassing intel these days. Maybe that's why it's cheap.

[@eimparas]

First

[@EmmanuelNwachukwu-cr5ob]

😂😂😂

[@BrendaRobinson-l4e]

Your channel is like a carnival in the world of entertainment and laughter. Continue to delight us with your entertaining and funny videos!‍♂️🔔🌽

[@joopterwijn]

So you put all the stuff of the bench upon the mail-bench….. we understand 🫣 And advise leave the old bench top as it is,… within no time it will be covered again.

[@Irilia_neko]

You need a transformer for 230v even for gan so it will not fit inside