EEVblog

Double 13 is worse than normal 13, obviously. More mailbag.
Forum: www.eevblog.com/forum/blog/ee...
SPOILERS:
Back in the old lab!
Vintage Soviet Union PC.
00:00 - Mailbag
10:42 - 3G modem with a funky antenna.
13:52 - IOMEGA ZIP drive teardown
18:56 - USB to RS485 interface olegkutkov.me/
19:52 - Another Byte magazine cover! bytecovers.com/
21:41 - Smoke alarm sensor teardowns
26:58 - Reverse engineering a Cooler Master PSU
34:45 - $1 ebay power adapter teardown gets Widlarized!
38:39 - Stonetech smart integrated LCD module www.stoneitech.com/
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[@Seegalgalguntijak]

So Dave, why is it that you're back in the old lab? Did you give up the new one? Or just use the old one as an extension to the new one? Somehow, I've never gotten a reply to that... Come on, Dave, take us on a lab(s) tour and explain what you're doing where and why! Pretty please!

[@EEVblog]

I have done video for supporters explaining this. Also available on my Library channel if you want to watch them.

[@Seegalgalguntijak]

@@EEVblog I now found it, yes, alright, thanks. Navigating lbry is quite different and unusual, compared to youtube, vimeo, dailymotion and what other video sites there are.

[@user2C47]

This is a fact normal people are not permitted to know.

[@julianreverse]

@@Seegalgalguntijak Can't find the video, what happened?

[@HighestRank]

1:24 “all the economics behind it”. Do you sleep through the first 2 min or are violated senseless by Dave’s shallow intel?

[@MrElbK]

Thanks, Dave! I almost lost my package because it wasn't tracked at all. Happy to see it in Mailbag :) -- Oleg from Kiev.

[@Vik_ru]

Я на английском не понимаю, но это там ваше рабочее место на фотке? %))

[@MrElbK]

@@Vik_ru Нет )

[@TymexComputing]

Good job! Hope the Crimea will be brought back to Ukraine - i noticed the nostalgy

[@foreignautomobiles]

Hope you are doing ok with everything that's going on.

[@MrElbK]

@@foreignautomobiles Yes. I'm okay.

[@tareqsu4972]

It is not uncommon to have antennas that "look" shorted. A very basic example is a loop antenna, which is simply a loop of low resistance wire, basically a short circuit. In fact, most microstrip antennas (The ones printed on pcbs) have a shorting pin or a shorting wall, by putting thees shorting pins or walls (among other techniques) you will be able to make your antenna smaller for a certain frequency. Of course in reality it is much more complicated than that, and nobody can look at an antenna and tell you why is it shaped that way, except maybe for the basic shapes. You usually start with some basic antenna shape, add your space constrains, and the software would iterate and optimize by simualting the antenna performance.

[@therealjammit]

I like to think of them as an auto-transformer. The input is a common ground plus drive, the output is the common ground plus the free end of the transformer. Sort of like an impedance matching transformer.

[@ramdasprasad3792]

Isnt that a fractal antenna.. the pattern repeats..

[@RobertPl0]

Dave. Mera's computer was made at the MERA plant in Zabrze Polska in 80's XX century. Mera 7209 was a computer terminal. Designation CM 7209 is a commercial designation, used on the international market; while the symbol MERA 7953 is a designation used on the domestic (Polish) market. Computers ware exported from Poland to other country soviet block

[@TomashPL58]

I would like to add, that UCY chips were usually logic gate chips and were very common from CEMI. I saw these very often since I was a kid, and I was born at 87. CEMI was an electronics manufacturing plant located in Warsaw, Poland. Very reliable chips they made. I'm still using some today (mostly logic NAND gates like UCY7400 ). Great piece of history tough!

[@apatewnayeah9854]

Time to hang a big poster outside "dump your 70+ inch TV here"

[@OzRetrocomp]

"Free e-Waste Recycling Centre"

[@lordelectron6591]

Would rather a poster " all unwanted electronic dump"

[@SilverSpoon_]

@Dave Micolichek David isn't asking, it just ends there anyways.

[@TechnikZaba]

8:00 A lot of CEMI,- no longer existing Polish enterprise producing microelectronics. Was closed down in 1994. CEMI located in Warsaw produced: discrete components, bipolar systems

[@ITTom]

...zapewne wyprodukowane i eksportowane na mocy „przyjaźni polsko - radzieckiej” 😉

[@OblivionLPS.]

Przeoczyłeś zielony kondensator Iskra na środku płyty PCB. Widać nawet trójkąt ze znakiem jakości 1.

[@evensgrey]

And MERA was a Polish miniciomputer series in the 70's. At some point they would have likely built some VDT models, as teletype-based terminals are slow and obnoxious for many purposes. They would have continued to be useful even after the MERA line was discontinued, and might have found there way all over the place. The design principle looks similar to the PDP-11/110 and /130 from DEC (computer squeezed into a VDT case, although a micro instead of a miniaturized mini, in some ways like a Sol without an expansion system).

[@hikariyouk]

My Frequency Central Product modular synth module has a few CEMI components on it.

[@urugulu1656]

no dave its not 3.3 volts by the looks of it. i cant see a dot anywhere. looks more like 33v for what ever

[@eDoc2020]

It's probably for directly controlling the CRT. Don't know the specifics but I believe some screen or grid voltages are in that range.

[@twicebittenthasme5545]

Cool stuff. Enjoyed the tour. Thanks for sharing!

[@OfflineSetup]

Where my dad used to work (in the 70s) there was a electronics genius who had been at the company for years. So respected that when he died (he never retired) they "preserved" his desk and no one was allowed to sit there. I can't imagine that attitude would find a space in modern companies.

[@andyhello23]

I agree, nowadays companies will take every they can get from you, and throw you away.

[@demef758]

Apple preserved Steve Jobs's office, too.

[@sanches2]

I work in a modern company and we've preserved Slavi's (an colleague engineering tech fellow who suddenly passed away) desk untouched for 3 months just for the sake of remembering him, now we only keep his lamp there. He was the center of the electronics department, always hanging out and telling jokes with the young ones and a mathematician and a great electronics engineer. We still talk of him and miss him.

[@OfflineSetup]

@@sanches2 Perhaps things haven't changed. Sorry for your loss, all we can do is show respect and raise a glass to memories.

[@demef758]

Steve Jobs' office has been preserved as well after his death in 2011.

[@badstate]

ZIP was a horrible design. The edge of the disk was exposed in use. When the head got damaged, it would chip the edge of the disk. If you put the damaged disk unknowingly into another drive, the chip in the spinning disk would catch on the new drive's head, breaking it as well. This cycle would continue for every drive and disk you tried. Went through a whole office of four or five ZIP drives and multiple disks one afternoon before I realized what was happening.

[@erg0centric]

by design

[@danm3188]

Maybe not a great design, but very useful at the time (mid to late 90s). Otherwise we were still depending on the common 1.44MB floppies or dialup modems (56Kb?) for transferring data. The 100MB Zip drives were very welcome... while they worked. CD-Rs were available, but still not very common and still a good bit more expensive at that point. I had maybe 20+ 100MB Zip disks at one point, and only had a few disks go bad on me before finally getting a 4x CD-R drive for around $200 in .... 2000?

[@JerrySmithKociak]

@8:23 - those CEMI chips were actually made in Poland. Prefix means: U - monolithic bipolar IC, C - digital circuit, Y - for professional use. Numbers are familliar, because those are the actual 74xx series IC's. I've got some of those, some are like 30 years old now, and they are still working fine. Greetings from Poland!

[@thecrikster]

Haven't seen a GUI that pretty since the days of MS Access!

[@neidan56]

CEMI was Polish manufacturer of 8-bit chips, it closed in 1994 :)

[@PiRX]

and Mera was Polish brand too ;)

[@thpeti]

MEV was a hungarian semiconductor company, separated successor of the semiconductor division of Tungsram, which was a lamp/tube factory, later bought by GE in the 90's. They had a serious fire in 1986, and the wafer fab wasn't rebuilt after. I've heard a legend that they were ready to produce Intel 8085/8086/8088(?) clones just before the fire disaster in the wafer lab. I have several MEV branded 74 series logic gates, some 741's, 709's and several TV specific components, like TBA 950 sync IC and TDA440 IF lying in my drawer. Also they had a large scale of bipolar transistors, like BC182/212, BD135 till BD249 series... The story in Hungarian can be read there: www.villanylap.hu/blog/4590-mikroelektronikai-vallalat

[@detalite]

Manufacturer of that MERA CM 7209 terminal is still functioning. Ealier known as Mera-Elzab, now just ELZAB.

[@mieszkogulinski168]

@@detalite the ones who product cash registers?

[@krzysztofkozorys516]

Pamiętam, pamiętam tamte czasy 👍

[@douro20]

ES EVM was a series of plug-compatible mainframes first developed in the late 1960s. Both 360 compatible and 370 compatible versions were developed. IBM actually provided software support for these starting in the early 1970s. The chips marked "CEMI" were produced in Poland and actually use Western numbering conventions. The chip labeled UB880D is the CPU.

[@nathantron]

There's something terrifying but completely normal about some aussie waving around a giant ass knife without a care in the world.

[@Metroid1890]

I have nightmares about that pretty often

[@pixymisa8087]

@Emmanuel Goldstein This being Australia, we have more guns now than before they were banned.

[@SolaLupus]

Especially in front of a large LCD TV. I was anxiously waiting for the moment he accidentally pokes the screen.

[@HighestRank]

MichaelKingsfordGray supposedly Mozart was infatuated with feces. It is what it is.

[@johnvine5731]

That's not a knife .......

[@rasz]

7:00 Mera was a polish computer design and manufacturing unit. They started with paper perforators, then calculators, later licensed terminal designs from Swedish company, then TRS-80 clone. After fall of Iron Curtain they managed to stay afloat by restructuring and switching markets to point of sale systems, Today they are still a local leader in this field. MERA CM 7209 (MERA 7953) is a terminal dedicated to Russian RIAD systems, direct unlicensed IBM System/360 clones. 8:00 Some polish manufactured semiconductors on the PCB. Unitra CEMI UCY chips 74 series. MCY series are microprocessor clones. Unitra CEMI even cloned Intel 8085 at one point. All behind Comecon (cold war) embargo.

[@vaguedirector_7342]

(29:00) ATX power supplies like that typically have this power path: Input filter -> Rectifier -> Active power factor correction boost converter -> bulk 400V capacitor -> push pull or similar transformer based step-down converter -> 12V DC bulk caps and 12v output -> secondary buck converters for 5V and 3.3V outputs. And some of the newer super high efficiency ones will have some sort of resonant converter doing the 400v DC -> 12V DC stage, which require some proper wizardry to design.

[@sircompo]

That Zip Drive head looks like the voice coil you find on hard drive heads. Miles ahead of stepper motors and not at all how-ya-doin'.

[@victortitov1740]

I wonder why no CD drives had such a positioning system. In CD drives, it is always combined crude (and noisy and slow) mechanical + fine voice-coil based positioning.

[@NiHaoMike64]

@@victortitov1740 The optical block is a lot heavier, so cheaper to use stepper motors.

[@rasz]

stepper is cheaper, you dont need precision in optical drives because lens assembly compensates on its own

[@sircompo]

@@victortitov1740 Possibly for cost. I don't think the seek time on optical media was considered that important, especially as the rotational speed was so much lower than hard drives.

[@eDoc2020]

@@NiHaoMike64 Actually all the CD mechanisms I've examined use regular brushed DC motors. Even cheaper than steppers.

[@j3rod]

Always good with a mailbag video ,, thanks

[@denniswoycheshen]

Man that's such a cool idea with the tv... You rock Dave!!!

[@SteveJones172pilot]

I definitely remember that BYTE magazine cover... Great old magazine!!

[@bradgriffiths3370]

Happy days! I'm glad to hear you might be moving back, I may see you in the hallway one day.

[@YSoreil]

That McDonalds bag packaging is so good

[@lhxperimental]

Australia: Where you can hope to find a 70 Inch TV in a dumpster.

[@lcdconsultant5252]

helloworld and a working 70” HD TV by the way

[@stranger7968]

It's a business building dumpster though. Rent an office in your city and you might find working tvs too :P

[@UpcycleElectronics]

You'll see them here in Southern California on the curb in high rent areas. Half the time it's from evictions of some twenty something that got, then lost, their first real job. The $3000+ per month rent is a killer. The other half can't fit the thing in their Lambo to take it to the recycler.

[@HighestRank]

LCD consultant -no whackers!

[@Alexagrigorieff]

8:43 - К573РФ5 is UV EPROM 2K*8. 9:08 - КР580ВИ53 is a knockoff of i8253 timer. КР537РУ10 is CMOS SRAM 2K*8 bit. First letter К means the part is for use in non-military applications. Second letter Р, if present, means plastic package (otherwise ceramic).

[@zyspan]

Great idea

[@Michael_Michaels]

8:52 Portugal!!! My beautiful country!! That chip is from the late Infineon, later Kimonda.

[@jolilos]

you should do a video wall made from dumpster finds. I mean a big TV is boooring - have some 19" , some vertical 30", .....

[@caromac_]

That souds amazing. can probably drive them with a scavenged desktop with 2 gpus.

[@jolilos]

@@caromac_ or simply from a media player displaying slides for the secondary monitors.

[@HighestRank]

MONSTER4242 & caseless mailbag power supplies.

[@lordelectron6591]

I have a 7" Tv

[@RobertBardos]

Dave, long time viewer to say , I think you should abandon the tv screen idea or have it up and off to the side as a additional background but not the main event. Dave your fans come to hear u talk about electronics and I personally like when you get the microscope out on interesting tear downs. Walk away from gimmicky bullshit other channels might be doing. Keep it fresh. You are the product. Not a background or a 70 inch tv or whatever. Keep it old school man.

[@wolfiexii]

I love your precision percussion alignment tool

[@jimmyramkisoen191278]

That green PTC 30:04 is used as a Inrush Current Limiting. During power on, a high inrush current can occur because the power supply’s link capacitor functions to dampen ripples in the output current. This capacitor acts like a short, causing an inrush of current. The inrush lasts until the capacitor is charged. Length of the inrush current depends upon the power supply and link capacitor.

[@fk6536]

on the zip drive, the interior (where the drives pushes against, and the motor is mounted on) needs to come up to spin the drive.

[@nulano]

13:00 I have seen an antenna like that in old (only a few years) smartphones. It was bend around the corner. I'm sure you can find similar ones in modern phone teardowns.

[@jorditribo94]

28:30 Diode Gone Wild KZbin channel did a reverse engineering in a pretty complicated PC power supply.

[@JohnDoe-eh4id]

It makes me smile to see Dave casually waving a dagger while talking about mailbags

[@dykodesigns]

8" floppy, maybe Curious Marc can read the disk for you. The Fairlight CMI used those 8" floppies as well.

[@Psychlist1972]

IMO, I would: Raise the TV. Move it to the left. Sit more towards the right and have the camera angled a bit. So rather than a full back drop, it's more of a 3/4 view and you are no longer centered. I think that will look a lot better. This is true even if you get a larger TV.

[@renatoencarnacao5490]

At 8:24, That oddball, made-in-Portugal, TI 74LS113 made me smile all day long!

[@cerglabs3646]

Love the "Guest Lab" idea!

[@StreuB1]

13:40 I literally blurted out laughing at work. Friggin Dave. lol

[@sloth0jr]

Definitely remember that Byte magazine. I still have my 1982-91 Byte magazines.

[@DoctorThe113]

Hi dave since you included a cheapy charger, i wanted to know how can i remove the effect of capacitive coupling between the mains input and output. I measured capacitance with my multimeter and turned out to be around 200 pf-ish for all of my specimens including a iPhone charger. I am a teenager and dunno anything about mains part of a PSU. But i want to make a switch mode psu (regulator part, not the mains part) soon. And capacitance coupling mess with my prototypes whenever i try to power them with a two prong psu.

[@Siktah]

Fantastic idea regarding the viewer lab background. Time for me to tidy up mine! Also grr I do kinda need a Zip drive...

[@TzOk]

MERA was a Polish company, so was CEMI, who did the UCY74xx chips used on this board. These are regular 7400 series TTL chips.

[@arekw7388]

MERA 7953 Z (CM 7209) is a computer terminal produced in the 1980s in the Mera-Elzab Computer Equipment Factory in Zabrze / Poland. Greetings from Poland!

[@mutatedpixel8042]

I kind of like the framing that the TV provides when it doesn't take up the entire area.

[@arthurtaggart]

Nice idea for the backdrop! Maybe a projector would be better RE sizing?

[@rmy3918]

CCCP : ) send that 8" to CuriousMarc, he loves Russian stuff too, don't think u will get many Zip Drives for repair after that LOL

[@ZomB1986]

Or to The 8-bit Guy

[@BlackEpyon]

I was thinking of CuriousMarc as well. I'm also wondering if anybody has figured out how to repair the "click-of-death," because ZIP drives are gonna become hard to find before too long. Some of us retro-computer enthusiasts like to keep our stuff working.

[@HighestRank]

BlackEpyon the disc themselves is the culprit. You have to jimmy open the metal shield and manually-rotate the platter looking for chips on the edge before every insertion.

[@FruitMuff1n]

Sounds like you need an array of dumpster dive LCD screens all wired up as a single display :)

[@mad_hatty]

I love the idea of a tv for real time pictures, it isnt distracting and it wont take focus away from the table as it normally would with a cut-away.

[@arthurtaggart]

Would a polarising filter help with the reflections?

[@wjodf8067]

looks good !!!

[@twobob]

That widget set is really dated on the Tool 2019 look more like 2009 to me. I suspect that was built with a "how to build a program template" ten years ago and never got updated ;)

[@DielectricVideos]

Thanks for the channel shoutout! Fantastic! :D

[@HighestRank]

And for only 91¢ more, you could have your lab featured as the backdrop on a mailbag episode.

[@daddylonglegsx9725]

I was against changing the mailbag format but this is a genius idea and would love to see it continue! Maybe a projector could provide a larger area behind you instead of a TV

[@mieszkogulinski168]

8:24 - UB880 and all 80A-... East German, KR580.. and later KR537, KR531.... are Soviet (as written on the package), UCY/MCY... are Polish (where MCY74011 = 4011 CMOS circuit, and UCY are TTL circuits), and 75...PC (around 9:13) are probably Hungarian.

[@jdlives8992]

He’s here all week ladies and gentlemen!

[@SeanBZA]

Still have 2 Zip drives, and a disk or two as well, one external SCSI and one parallel drive, which both look almost the same from the front and rear, except SCSI has a switch to select between ID 5 or 6, so you could have 2 of them on a single SCSI bus. External terminator only.

[@joselaw6669]

Not the idubbbz we deserve but the one we need.

[@granthoughton769]

So you bogarted the USB socket and Led from the daggy charger? Good on ya! Awesome mailbag.

[@ranzee]

I'm not sure if a projector would work better?

[@SolaLupus]

26:14 If I remember correctly, the voltage is not applied across the Americium itself. It is between the walls of the chamber. In a normal state, the americium ionizes the air between those contacts just a little, so there is a constant small current, but if smoke particles enter the chamber, they are much easier to ionize and the current rises sharply (that is what the detector looks for).

[@TheOnlyPsycho]

You could try getting the TV to fill the background by setting your video camera further back and zooming in, not sure though if the effect will work with the space you have.

[@edwardneuman6061]

Some of the caps on that board look like they've seen better days, LOL.

[@fallofmanbrand]

great content keep it up

[@Electronics-Rocks]

Sounds interesting to have viewer labs as background. The Smokes revisit was aico.co.uk due to power consumption using an old school Zener diode. I have a few on my bench which I an fitting new permanent lion batteries as supposed to last 10 years but the sparky forgot to change a switch on fitting my win. as they cost £80 each as have a wireless link. The sensor was optical. Also one funny note we was only allowed to carry 7 ionising detectors in the car duff or new to fit.

[@hccaos44]

The "Video thing" at 8:31 is an Eastern Germany Z80 CPU Clone. The 80A CTC and SIO are from the same plant located in Erfurt.

[@MC_AU]

Voice-coil head positioned were common before angular and stepper motors. Check out the DEC RK05 and similar platter drives from the seventies.

[@ghlscitel6714]

I hope the dumpster is closer to the old new lab.

[@PeterHaida]

Displaying other viewers lab's in the background is a brilliant idea, please make it a permanent feature of your mailbag videos.

[@volvo09]

Dielectric Videos! I started following him a few years ago and I thought the supply story sounded familiar!

[@joaquins90]

What lens are you using? Maybe a longer lens further away makes the size of the required screen smaller. I don't remember the distribution of the old lab, being smaller maybe you don't have the space to get far enough for the longer lens, but something to consider... Cheers

[@boris2342]

Fixed it so good ... even had spare parts left over

[@tveasy5172]

I made my first Z80 based PC in that 89, from PCB ( had some shorts), then had to find all the components from market in Moscow. Recording data on cassete deck, tube tv used as a monitor via RGB.

[@HighestRank]

Russia Germany Belarus made the best CRT in the world.

[@TheIanBach]

Would rear projection work, solve the reflection problems and also be cheaper?

[@sysghost]

38:13 - So *that* is how low profile caps are made? .. Gee... Who knew?

[@Stefan_Payne]

Achtually, the shielded inductor, right next to the big Main Caps is the PFC Coil that boosts the input voltage (usually somewhere between 90-110V at the low end and up to 265V high) to somewhwere around 350-420V DC (usually around 380V or so). Then the Double Forward Topology does the switching (IIRC Champion Micro CM6800 series) and only generates 12V! 3,3V and 5V are done by a pair of Buck Converters. And Protection looks pretty complete with everything you'd want (OCP, UVP on all rails). That's what that Sitronix Chip does. Its just a Supervisor. Regulation is _ONLY_ on the Primary side (for 12V - the other two rails are generated out of 12V). Manufacturer of that unit is Chanell Well Technology...

[@eebaker699]

I think your idea is fantastic! Maybe a bigger screen would help..😁 How about a rear projection setup?

[@marcelvandenbroek537]

the plastic spacers prevent shorting of the metal transistor housing with the solder pads under the transistor.

[@andyhello23]

Its great that you have worldwide viewers, whom can share obscure stuff, we will never of heard of or saw. When were 8" floppys actually a thing?

[@MrThoriam]

even with this screen looks awesome

[@SolaLupus]

Many modern smartphones have similar "3D" antennas. They are usually properly molded into the plastic using some conductive compound. I guess they are great way to save space while getting decent gain.

[@jorno1994]

Could get an overhead camera to show details when you want to. could use your old cam even.

[@EEVblog]

That's messy. I like opening all the packages and then filming detail as I normally do. Framing and angle is way better than overhead shots which I hate the look of. Would likely be more shooting time inefficient too.

[@disorganizedorg]

Now I feel old. As recently as 1998 I was using 8" floppies at work on PDP-11's driving Bell & Howell 3800 and 6700 series COM (computer output nicrofilm) recorders. I'm pretty sure that was also the last time I hung a 9-track tape.

[@clemenswalter1984]

I have one of these 1$ usb powersupplies, but with the optional optocupler populated, bit it makes absolutely no sense, as some of the legs aren't even connected. Due to safety concearns i have never pluged it in. was wondering if I should send it in, but thought it wasn't worth the shipping.

[@englishrupe01]

Don't bother. He'd just open it with a hammer, like he did the Zip drive. Then make some inane comment like "Oops!" and throw it in the bin. Save your money.

[@WreckDiver99]

I remember that cover...So many times I bought Byte...

[@DanielLopez-up6os]

A Ultra Short Throw Projector would work aswell as it could be behind you but still show Images up to 120 inch, without glare.

[@olerBE]

Great idea, Dave, tell us where to send in the pictures ;)

[@TheAussieRepairGuy]

13:34 - looks like a high frequency double-dipole loop antenna to me. However, I may or may not know what I'm talking about. I'm sure someone will correct me.

[@MancaveEffects]

I would use a retro projection, it is more versatile and as you have control over lighting in your lab. There are special close proximity projectors and lenses that do not require to much distance to the screen as you certainly know. I work a lot with retro projection at work, it looks amazing when used right! Awesome video as usual by the way! 😎

[@weirdworld3874]

That concept would be amazing, but only labs but other things such as circuits, data sheets and other general info for products. Dedicated camera with feed to the screen for close ups, with mixing/switch for cameras.... almost need a camera operator lol

[@SimonPetrikovy]

That is a great idea!

[@thecarl168]

good idea of having picture of other lab

[@VividNation]

Honestly, if you do it like that you loose a great deal of cozyness lab atmosphere of yours. I loved to see how you arranged everything behind you on your shelfs and the details and stuff. It was looking "homey" if thats a word. At the moment is just sterile ;) so pls keep that in mind.

[@DundeeRoad]

Nice idea! tv looks good

[@MoritzvonSchweinitz]

How do they produce those power supplies? It looks like a complicated mixture of SMD and (huge!) through-hole parts. Is it all manual?

[@optimizelogicrepair2784]

Where ca I send a picture of my lab?

[@ianphilip6281]

For what it's worth Dave, I liked the old format more with you closer to the camera and the Back To The Future stuff in the background. Bloody ripper! Felt more professional. However with the 70" (big ass display!!), some framing tweaks and perhaps a different lens it could work. I'm sure the price of a lens is cheaper than years at a chiropractor after leaning forwards to the camera! An alternative is a smaller camera just out of frame to the side for closeup shots. That would get really old, really fast however in the video edit and the crisp image may suffer too. Keep up the good work. 👍

[@AshenTiger]

What's the tldr of returning to the old lab?

[@mc_cpu]

Saving money, I believe he owns the old lab and was renting the new one.

[@ataria5609]

Couple months back he made exclussive video regarding rentals and his possibilities. He considered moving back and I guess he finally made the decision.

[@spacewolfjr]

I think Dave 2 aka David got bit by a bird and shrank so he no longer needs a full-size office

[@josephcote6120]

The ZIP drive carrier moves upward to engage the drive pin into the drive hole on the disk.