Apple ][ plus: 8304 replacement from AliExpress, more keyboard fixes, and a huge surprise!

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Welcome to part 5 in the Apple ][ plus repair series. In this video, I start to tie up many of the loose ends from the entire series. Then we have a Mini-Mail-Call with a very shocking end.
Part 1: • A viewer sent in a ver...
Part 2: • Apple ][ plus extreme ...
Part 3: • Fault finding and tryi...
Part 4: • Fixes for the Apple ][...
Part 5: This video!
Part 6: • Apple ][ plus: VIDEX 8...
0:00 Intro
0:39 Really fixing the keyboard
11:34 Two different Apple ][ plus keyboard types
16:46 Ferrite ring on the Apple ][ plus keyboard? (Viewer suggestion)
20:21 DP8304 bus transceiver from China (is it real?)
25:20 Mini-Mail-Call from Stewart (the man who donated the Apple ][ plus)
36:27 Another donation that has blown my mind (again)
--- Video Links
EDSYN The Original Deluxe SOLDAPULLT (The solder sucker I used)
amzn.to/3kMZYKe
St Johns
en.wikipedia.org/wiki/St._Joh...
Cathedral Park
en.wikipedia.org/wiki/Cathedr...
DP8304 I ordered from AliExpress:
www.aliexpress.com/item/40001...
--- Tools
Deoxit D5:
amzn.to/2VvOKy1
store.caig.com/s.nl/it.A/id.16...
Jonard Tools EX-2 Chip Extractor:
amzn.to/2VazxDS
www.jonard.com/Products/EX-2-...
Wiha Chip Lifter:
amzn.to/3a9ftWw
www.wihatools.com/precision-c...
O-Ring Pick Set: (I use these to lift chips off boards)
amzn.to/3a9x54J
Elenco Electronics LP-560 Logic Probe:
amzn.to/2VrT5lW
Hakko FR301 Desoldering Iron:
amzn.to/2ye6xC0
Rigol DS1054Z Four Channel Oscilloscope:
www.rigolna.com/products/digi...
Head Worn Magnifying Goggles / Dual Lens Flip-In Head Magnifier:
amzn.to/3adRbuy
TL866II Plus Chip Tester and EPROM programmer: (The MiniPro)
amzn.to/2wG4tlP
www.aliexpress.com/item/33000...
TS100 Soldering Iron:
amzn.to/2K36dJ5
www.ebay.com/itm/TS100-65W-MI...
EEVBlog 121GW Multimeter:
www.eevblog.com/product/121gw/
DSLogic Basic Logic Analyzer:
amzn.to/2RDSDQw
www.ebay.com/itm/USB-Logic-DS...
Magnetic Screw Holder:
amzn.to/3b8LOhG
www.harborfreight.com/4-inch-...
Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
www.ebay.com/itm/14-16-18-20-...
RetroTink 2X Upconverter: (to hook up something like a C64 to HDMI)
www.retrotink.com/
Plato (Clone) Side Cutters: (order five)
www.ebay.com/itm/1-2-5-10PCS-...
Heat Sinks:
www.aliexpress.com/item/32537...
Little squeezy bottles: (available elsewhere too)
amzn.to/3b8LOOI
--- Links
My GitHub repository:
github.com/misterblack1?tab=r...
Commodore Computer Club / Vancouver, WA - Portland, OR - PDX Commodore Users Group
www.commodorecomputerclub.com/
--- Instructional videos
My video on damage-free chip removal:
• How to remove chips wi...
--- Music
Intro music and other tracks by:
Nathan Divino
@itsnathandivino
Outro Music:
Abyss by | e s c p | escp-music.bandcamp.com
Music promoted by www.free-stock-music.com
Attribution 4.0 International (CC BY 4.0)
creativecommons.org/licenses/...

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Опубликовано:

4 авг 2024

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Комментарии : 421

@stephanemignot100 3 года назад

This Stuart fellow is a real gentleman! This world needs "good guys"....

@phil1s 3 года назад

m.ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-V62Uw-h0pUc.html

@PeachIceCreamy 3 года назад

Just as long as they aren’t “nice guys”

@andrewrobotbuilder 3 года назад

While I don't have even a fraction of the electronics knowledge, just watching Adrian get excited over the current tracer has made my day. Definitely coming back to watch him use it in another project!

@performa9523 3 года назад

I don't know who this Stuart fellow is, but I feel like I owe him a beer as well for getting you (and by proxy all of us) all this sweet new kit. This is excellent!

@adriansdigitalbasement 3 года назад

Yeah I really do!

@thomasandrews9355 3 года назад

Hey Alex! How are you :) lol I'm not stalking you, I swear. Hope your Amiga 2000s are doing well.

@performa9523 3 года назад

@@thomasandrews9355 They are doing great thanks to you sir! Was playing Batman earlier today!

@performa9523 3 года назад

@@blitzwing1 It is our little oasis of retro tech goodness, glad to have you with us!

@CDP-1802 3 года назад

Back when HP made stuff that gave engineers that "opening a present on Christmas morning" feeling :)

@eDoc2020 3 года назад

As the direct descendant hopefully Keysight can give the same feeling today.

@bentboybbz 3 года назад

I’m not that old but I heard it gives the old heads a stiffy like those blue candies.

@TrimeshSZ 3 года назад

The old HP stuff was wonderfully over-engineered - I've got a HP 5245M frequency counter (50MHz !) that based on the ink stamps on the chassis was made in 1969 - it still works correctly and you can go through the whole calibration procedure and everything is still in spec. I was a bit worried about all the electrolytics - they are 50 years old, after all - but when I checked them I found that although they were down to about 60-70% of their marked value there was so much design margin in the product that everything remained in spec anyway.

@davidtaylor6124 2 года назад

@@TrimeshSZ Mr Carlson would like a word.

@frostymaxritz8202 3 года назад

Boys and their toys. The happiness on Adrian's face is how one can explain what being happy really feels like. I can relate to that happiness. You rock Stuart.

@blockbertus 3 года назад

Seeing how excited Adrian gets about stuff makes me happy. It really shows how much he appriciates these things (especially old ones). He really deserved that Current Tracer, as well as the microscope.

@vresi 3 года назад

3:07 I absolutely love those old-man slippers!

@syy8976 3 года назад

My dad has a few pairs of them to lol.

@joe--cool 3 года назад

The 9pin on the Keyboard Encoder is for a user installed Numpad. S2 can be installed to enable quad mode encoding (4 states per key, including lowercase, CTRL, CTRL+SHIFT) but you will need a new ROM for those characters and also cut a few traces on the encoder. I don't remember how to do it exactly.

@Dark_eVader 3 года назад

Apple ][ and a SOLDAPULLT !!!!! The one and only original in my mind. Brings back good memories for me. Great video

@hi_tech_reptiles 3 года назад

Just to add to the others mentioning yes, those are real wafers. Discarded error wagers end up on eBay and are super cool! Those look like the more silvery ones, different parts end up looking different being made with different ratios of materials. I'm envious, I've always wanted one! Very cool! :)

@mal2ksc 3 года назад

Sometimes when they test the dies, the yield rate is so low it's not worth chopping the wafer up to get the good ones out. It would have to be pretty bad though, something like 10% or less before it isn't worth bothering.

@kaitlyn__L 2 года назад

They repurposed some of those for a shot in The Expanse season 4! They 3D printed(?) small orange holders around each of them, and a brief shot says around the edge that it’s an encryption subsystem. It’s surely presented that way just because that’s how these come when bought from eBay (especially because the rest of the computer hardware shown are side-lit laser-etched acrylic “chips” much like in Star Trek), but I like the idea that the encryption is so complex a few centuries from now, and thusly their designs are so large, that the hardware codec has to be split across an entire bank of a dozen wafers to function. Moore’s law having physical limits, after all, and die sizes are already growing nowadays!

@StephenGutknecht 3 года назад

HALLOWEEN 666 KEYBOARD PROBLEMS, THE GHOST OF STEVE JOBS! HELP!!!!!!!!!!!!

@zap2002 3 года назад

I've never seen someone so excited getting a probe lol. Congrats.

@laurensa.1803 3 года назад

Even I am excited, 'cause I realize of what it can be.

@jond1536 3 года назад

from the Cheeze-it commercial "its a PROBE"

@18000rpm 3 года назад

Definitely real wafers. A lot of them get discarded due to errors.

@hi_tech_reptiles 3 года назад

They are all over ebay. I want one super bad! The question is always where they come from, some more expensive than others especially depending what they are made of.

@18000rpm 3 года назад

@@hi_tech_reptiles a lot of wafers get rejected. When the wafer is made they do some initial testing to look for defects, if there are too many the whole wafer is discarded before they actually cut out the individual chips for further packaging and testing as that is expensive. I'd guess the pricing depends on factors such as what chips they are (popular CPUs are probably preferred), and what kind of process (what nm feature size etc).

@noanyobiseniss7462 3 года назад

@@hi_tech_reptiles Process engineers toss them after determining the faults source.

@TheGuyThatEveryoneIgnores 3 года назад

I saw some of these when I was taking Electrical Engineering courses in college. We were told that every single chip on the wafers were defective, so these wafers could be full of defective chips as well. I once got a key fob from IBM that was a single wafer chip embedded in clear plastic, most likely defective, but still cool to see. What is also interesting is the size of the wafers themselves. They were relatively small back then.

@DavidRickard1 3 года назад

@@TheGuyThatEveryoneIgnores I have a pretty old AMD key ring with a chip in it. No idea what it is, but it's pretty old so could be a K6 of some sort - or something really boring!

@RapperBC 2 года назад

After watching many of your videos, might I sugggest that in my humble opinion, you've more than earned your 547A current tracer. Thanks, Stewart!

@bf0189 3 года назад

I can't wait to see an in-depth video of the current tracer! Such a cool tool you got! Thank you Stuart for the wonderful donations which benefit not just Adrian but all of the viewers so he can do more technical repairs.

@paveloleynikov4715 3 года назад

And here I am, cooking my breakfast and watching this video. And exactly when Adrian pushed power button back in place, timer for coffee goes beeping. With seconds precision, no kidding

@robintst 3 года назад

Holy cow, Stuart, you're such an awesome, awesome dude! Very happy to see you so happy Adrian! All this neat stuff is gonna be fun to dig into. :D

@nickbnash 3 года назад

Really appreciated your excitement at the end. Grate video-as always-thank you for making it.

@frazzleface753 3 года назад

Love that the new 'Power' key works. It's those little details that make you smile 😊

@themegaman91965 3 года назад

Super entertaining, thank you for posting this amazing video repairing older hardware! I am very fascinated about things like this, and even found out that the NES uses the same processor with the 6502 MOS architecture, but being produced by Ricoh, and clocking at 1.79 mhz instead of the slightly slower 1.072 mhz that the Apple II here uses! So fascinating!

@P5ychoFox 3 года назад

Amazing gifts there! So cool and so nice to see how happy you were with them.

@BitSplits 3 года назад

I'm happy You fixed the switches with the ultrasonic cleaner, it's an essential tool for us vintage keyboard restorers. It can make wonders also for cleaning keycaps.

@jasondolph2785 Год назад

Man that is a nostalgia bomb. Covington Jr. High School in Vancouver had one of those Digitek digitizers with that identical camera! I have old artwork hanging at my parent's house that was made in part using digitized images from old Nintendo Power magazines! The light that we used when doing the digitizing actually melted the glue on the spine of one of my magazines back in the day and put an end to my then-pristine collection!

@Barracuda48082 11 месяцев назад

Awesome work. Adrian. Hearing the 8bit beep music was such a memory jog. 1970-1971 I had the old hard deck terminal, timeshare on community college mainframe , no disks, just punched tape for saving work and reloading work or programs. Following came a texas instruments pc around 1978, then commadore series, and many others. In 1984 I was employed as a quality control inspector and records were kept on the apple II e. Basic A.

@JeffreyHansen 3 года назад

Thanks for giving a thumbs up to the Soldapult. I lived next door to one of the original people behind that product - great guy. Let us use his pool all the time - he was a single guy who did a lot of tinkering around the house. Owned a VW camper van, and one of those old Volvos.

@CubicleNate 3 года назад

I will NEVER thumbs down a video. I don't think you are capable of producing garbage. Congrats on that gift of a current tracer. I can't wait for future videos of you using it!

@danielyazbek9910 3 года назад

Congrats!! You deserve!! Thanks for the videos! 👏👏👏👏

@jjock3239 8 месяцев назад

That current tracer is a beautiful gift.

@JoesComputerMuseum 3 года назад

My envy level has reached an all time high. Awesome stuff, sir!

@richardbrobeck2384 3 года назад

Glad to hear that those DP8304's worked out I wiil order some for spares for my Apple ! Far as SOLDAPULLT I have been using them for 30 plus years.

@danmackintosh6325 3 года назад

37:58 just looked up the 547a current tracer, the only sale listings I could find were POA so definitely know I'm not affording one of those puppies right now lol... Sure you'll get 100 times the usefulness out of it anyway, and it's nice to see folk with the means actually stepping up and supporting good creators on YT in this way. Thank you Stewart, this benefits us all greatly & you are indeed a gent. 73

@kenkobra 3 года назад

Another great way to start my Saturday! I'll put the yardwork off until I'm done with this one.

@crowbarviking3890 3 года назад

used such a microscrope for years when i worked for LG. Used it to document defects/flaws on LCDs. Quite useful.

@theannoyedmrfloyd3998 3 года назад

I bought one of those same solder suckers at a HAMfest years ago. I recently used it to cleanly desolder the VRAM chip in a faulty NES I repaired for friends. New chip easily plunked into place.

@GernBlansten17 2 года назад

At about the 4:00 minute mark you ask about the S2 switch and the J2 9 pin D-Sub connector (both unpopulated). According to "The Apple II Circuit Description" book by Winston D. Gaylor that you mentioned earlier in this series, S2 was supposed to be used as part of a lowercase mod for the keyboard and J2 was meant for adding a numeric keypad to the keyboard's matrix.

@unfunk 3 года назад

Fun fact: the texture of the key indicates what is made of. The shiny one is probably made from ABS, while the textured one is probably PBT. They both start with the texture, but ABS wears down much faster than PBT.

@lyledal 3 года назад

Just wanted to let you know that I'm watching this on Nov. 3rd. Adrian, your content is SOOTHING. Tnx!

@jkeelsnc 3 года назад

I also like that Airline vintage radio. Cool.

@mattelder1971 3 года назад

Those solder suckers are awesome. I need to get one soon. We used to use them in the Navy (I was an electronics technician) and I don't think I've ever used a better model since then.

@ResonantBytes 3 года назад

Hey Adrian! Thanks for the hint with the high quality mechanical solder pump! :) One piece of advice about mechanical solder pumps: Not sure if you do that already, but I noticed you have to clean them regularly by taking them apart and wiping the inner side of the piston and the rubber O-ring with isoprop to remove solder and flux residues and potentially (carefully, because solder is hot as we all know!) grease them with something like Ballistol (let's call it German WD-40) and even the cheap 2.5$ ones will last for years! I suspect even the genuine pump will degrade in performance unless it gets cleaned from time to time. I'm looking forward to testing this! Stay healthy and safe as well!

@bitoxic 3 года назад

Well deserved goodies you received Adrian! 👍

@Electronics-Rocks 3 года назад

I remember changing loads of those Alps switches from 1987 onwards in Olympia typewriters and other computers. Then other switches I used to see on Brother and TEC typewriters. The Alps keyboards Was The best one. I used to repair home and business systems and still have most of the original service manuals. WOW a current tracer is the best tool ever I had one and on a move I lost it and never replaced it. SO COOL!!!!!!!!!!!!!!!!!!!!!! It will make fault finding so much easier

@Electronics-Rocks 3 года назад

I have the manual for the current tracer if you need it plus several other manuals of digital repair before the internet

@danieltufvesson1349 3 года назад

I actually gasped when I saw the contour of what was in that foam packaging. The HP 547A current tracer is awesome. Invaluable piece of kit. It's like magic. They are close to unobtainium by now. The 547A could be bought in a kit with the 546A logic pulser and 545A logic probe along with a few other goodies. I have that kit and the 547A tracer and the 546A pulser it a wonderful combo. You can use the pulser to inject pulses unto an unpowered board and probe around to find where the current goes. Great for finding shorted tantalums! The pulser function can be replaced with other things but the magic voodoo of the tracer is simply not manufactured anymore. The indicator light in the front assembly is actually not an LED but a small incandescent bulb. It's part of the voodoo and probably difficult to replace so be gentle with it. The 547A tracer can also be used to detect bad RAM chips. No more thumbing around for hot chips. Just probe the top of the RAM chips and compare the internal currents. I said it before but it is like magic. Can't wait to see you use it :)

@DanielLopez-up6os 3 года назад

Awesome video as Always mad, Great work!

@Renville80 3 года назад

Glad to see you got one of those solder suckers. They work real well, but you do need to clean them regularly, including the face of the plunger, as the solder will eventually build up into a disc you can just pry off. There is definitely a technique when it comes to using it. A quick way to reload the unit is to push the plunger with the heel of your other hand (yes, the hand currently holding the iron), but once you get the hang of it, sipping out solder will go fast.

@tommyovesen 3 года назад

Fantastic. I never heard of such a device :) Great video.

@kajyakuzonik9130 3 года назад

Hah, that ultrasonic cleaning for switches might come handy one day. Thanks!

@RubenRodriguez-iw7gv 2 года назад

Loved the ending!!!

@ericjenks9596 3 года назад

Part 5 never got linked in part 4 fwiw. Great series!

@jdpruente 3 года назад

I had a Digi-View back when. The original for the A1000 used with a gender adapter to work with my A500. I also had a color wheel, but mine was a circle with quadrants of CRGB plexi or something. It came with a motorized mount that connected to a joystick port so that the Digi-View software could automatically change filters as it scanned the input.

@jdpruente 3 года назад

Ah, I found a video that show the Digi-Droid hardware! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-rFqZvzcarrs.html

@HeffeJeffe78 3 года назад

That thumbnail made my day. It's like the "What Pokèmon is it" vignette, but with computer parts.

@xnonsuchx 3 года назад

Nice to see ARCHON running! My older brother and I played that on our Atari 800.

@DiverCTH 3 года назад

Aah the Soldapult. I used one of those at a previous position for several years. Technique-wise, you can hold the Soldapult in your left hand and make a fist with your finger on the button, soldering iron in your right hand as normal. Slam the spring plunger against your left thigh to arm the unit, then twist your wrist to put it up to the work-piece and push the trigger. With a little practice, you can desolder an entire 10-pin IEC connector in under a minute. The next upgrade is either a Hakko 808 for around US$200, or a vintage Weller WR3000 for US$2000+

@carlosaugustorj 3 года назад

Keep up with the great work

@wacholder5690 3 года назад

Hi ! I have two black Soldapullts for 25+ years. Got fed with these aluminium powerless short-ones that always stick when you need them most. The DS-017 use to stick after heavy use as well - but if you use a silicon spray regularly you have best results over decades. These go very quickly apart and "service time" is quite short usually. Except you' sucked out massive and totally dirty crap like from old tube gear ... :-)

@paulb4uk 3 года назад

Apple 2 is looking great thanks for all the videos adrian

@only257 3 года назад

🍿🎃🍩

@zbradbell 3 года назад

OMG I have the exact matching little bee mugs to go with your tumbler

@buttguy 3 года назад

My II plus I just finished working on has that other keyboard type. Luckily my friend had a spare keyboard, because if those stems break, theyre unobtanium. Really would like to start 3D printing replacements, but I don't have the know-how. Also helpful to see another one of those keyboards, I thought my space bar was upside down but yours is the same way!

@VintageProjectDE 3 года назад

The HP 547A is awesome. I have one, too, but don't yet really know how to use it properly. Looking forward to your video on this! :)

@EngineeringVignettes 3 года назад

Manuals are on the EEVBlog forums, eg. this link (if Adrian allows links...) www.eevblog.com/forum/reviews/hp-547a-current-tracer/msg537563/#msg537563 Cheers,

@adriansdigitalbasement 3 года назад

Thanks! Saved

@Walczyk 3 года назад

ahahahahah "look like a muscle builder" this is gold!

@adriansdigitalbasement 3 года назад

HAHAHAHAHAHA

@jason50146 3 года назад

Hans and Frans from Saturday Night Live came to mind when Adrian mentioned that. Look at my tight shirt!

@brendanfarthing 3 года назад

I have the Digiview and a similar B&W security camera and the filter wheel. That thing was amazing back in the day.

@rustyfloorboards 3 года назад

Newtek! So many memories of me back in the day with my uncles video toaster! ❤️ what I would give to have one today.

@Arivia1 3 года назад

Knowing you were from Quebec I was expecting the St. John's stuff to be a Maritimes reference!

@jNetDowling 3 года назад

I also fully expected something to do with Newfoundland!

@JT-tz5hp 3 года назад

Newfoundlander here. Was thinking the same. :)

@TanjoGalbi 3 года назад

🤣🤣🤣🤣 Made me laugh when you pulled out the Digi View which clearly states on it "Digi View" and "NewTek" and then said "This looks like a NewTek Digi View"!!! 🤣🤣🤣🤣

@retrogameon 3 года назад

So lucky. I've been wanting one of those HP's for the longest time. Would have been great during my last repair

@Wallygjs 3 года назад

Adrian, I think Stewart is your fairy Godfather! What a guy! As always great video to watch on a wet and very windy Saturday afternoon here in the UK.

@wimwiddershins 3 года назад

Your videos are compelling watching. Great stuff Sir! Stuart put some thought into those donations, kudos Stuart.

@suvetar 3 года назад

Wow! Nice gifts Stewart! You da man! :D

@GaryCameron780 3 года назад

3:50 you are correct. The switch controls whether or not control is needed with the reset button

@jjock3239 8 месяцев назад

Those circular gizmos are the blanks for integrated circuit chips. The next step in the process, is to cut all those little squares out, add wires and mold the whole thing into a chip. I have a couple of them, and they are fragile. Also cool. :-)

@soulreaver555 3 года назад

many thanks Adrian, I've just purchased a Soldapullt

@2Toadz 3 года назад

Happy Halloween Adrian! Sounds like Stuart has won the Internet today! Thanks Stuart for making all our days!

@lightmagick 3 года назад

Those definitely look like real silicon wafers to me. My dad worked at Motorola years ago and he brought some home from time to time that were defective/unusable. I sadly don't have any of them any longer but they are cool to see in person.

@fabioacrs 3 года назад

Glad the ultrasonic cleaner tip worked out fine. :)

@2010Thex 3 года назад

That solder suck is the best out there. But be careful, it can pull pads and traces.. so it would mean you need to use solder wick. Excellent video!

@kostaskritsilas2681 3 года назад

Adrian, One if the ultimate tools for PCB debugging is the General Radio/Genrad GR2220 Bug Hound. It is nit well known, but it has an audible continuity tester (nothing really special these days), a micro ohm meter (for tracking down Vcc to ground shorts), and a direction indicating current probe (useful for seeing where traces go without a schematic). They do pop up on eBay on occasion. P.S. Also an ex-Montrealer, from Park Extension. Went to Dawson College, and took Electronics Technology there.

@SteveGuidi 3 года назад

Those big-blue solder suckers are amazing (there are several clones too, which may be unlicensed). One thing to keep in mind is that the piston and gasket needs to be cleaned and lubricated regularly. The tool's advantage is its large spring and "sucking power"; when the piston and gasket gets jammed with solder, the suction power is greatly diminished.

@adriansdigitalbasement 3 года назад

Thanks Steve -- yeah I will be ordering a couple parts to service it -- and remember to clean it out and lubricate things periodically.

@dtec30 3 года назад

solder pullit was used in australian telephone exchanges really good

@prozacgodretro 3 года назад

You're not kidding about some of those solder suckers, one of my plastic ones blows itself apart every time I try to use it. And the metal anodized blue one I have tends to come apart, every few clicks or so.

@nbntelevision1 3 года назад

I have that same solder sucker and it works fantastic on both computers and large solder blobs on vintage radios! Simple device, but really effective and affordable.

@simontay4851 3 года назад

Not at $22 it isn't. The other ones are aluminium yet are cheaper. This is all plastic except for the spring. It shouldn't cost $22. The plastic can be injection moulded in seconds. Aluminium has to be machined.

@nbntelevision1 3 года назад

@@simontay4851 The plastic model works. Aluminum is garbage. I’ll pay more for something that works reliably.

@katho8472 3 года назад

Now, following the great success of the Dead Parts Bin, the next level: The Bad Parts Bag!!! xD

@johnperalta9415 3 года назад

I usually put a rubber from the crt cap on my solder sucker to improve the suction and to not melt the tip of the sucker

@Damaniel3 3 года назад

Those USB microscopes are actually a lot better than I was expecting them to be (and those wafers are awesome!)

@sgkonfetti 3 года назад

Topic suggestion: 3,5" Floppydrives for the Apple 2e / 2c

@francistheodorecatte 3 года назад

my cheapy solder sucker is identical to yours. all I had to do to mine to get it working excellently was pull it apart and put a lick of silicone grease on the piston's sealing o-ring.

@SudaNIm103 2 года назад

🤭 Oh man, that's one hell of a Halloween Treat!

@jjock3239 8 месяцев назад

I can't wait to see a demo of the current tracer.

@andrasszabo7386 3 года назад

I really like those Alps key switches the Apple 2 uses. I have a spray only sold here in Hungary that is better than Deoxit, and I use it to fix old switches.In fact, I have ordered a few hundred new switches here in Hungary, because it is still sold here, and I have made a new keyboard for a Spectrum using these switches because my membrane is dead. I could easily fit and connect them with a little bit of drilling and hot glue in the original case under the rubber key mat.

@svenpetersen1965 3 года назад

The ferrite core is usually for fixing EMC issues. That means, it works in the RF range. It blocks the high frequencies from going into the keyboard cable, where they are then emitted. You have been taking care of it a long time, before us in Europe. EMC and CE certification is mandatory since 1997, here. So our C64s don’t have a ferrite core at the keyboard cable. And yes, it is good to place it as close to the mainboard as possible. The ferrite core will not improve functionality, I think, because bouncing and whatever interference happens on such a keyboard has a way lower frequency that what the core attenuates. A sensitivity to RF usually does not play a role. In all EMC tests, that I have been conducting, I have only seen it once, that was with a capacitive button UI.

@acolisys 3 года назад

HP 547a is now really hard to find, take good care of it. Mine was stolen in 90's, never had a chance to buy another one. I've developed an 'all-in-one' replacement, with pulse generator and digital probe.

@johnfowler6600 3 года назад

A quick and cheap fix for microscope stand is a screw type hose clamp enjoying the tips you provide weekly

@adriansdigitalbasement 3 года назад

Good one! Thanks for the tip

@twocvbloke 3 года назад

Could have used that solder sucker yesterday when desoldering a broken IC socket for the CMOS chip on an AT Socket7 motherboard I bought for parts (but turned out to not have the parts I wanted so am trying to restore it now!), my solder wick just didn't seem to want to suck, even with help from additional flux, but it's out and the holes cleared anyway, just waiting for some turned-pin 32-pin DIP sockets, but still, solder suckers would be handy...

@ktotheswiss1617 3 года назад

I bet someone is losing their mind over the opening of the PEZ dispensers,🤣.

@olepigeon 3 года назад

36:27 Did Stuart just propose to Adrian?! Tell us you said yes, Adrian!

@BertGrink 3 года назад

😄lol

@johnsouthern6089 3 года назад

I had the Newtek digitizer for the Amiga. Came with a dongle and a color wheel. It worked alright for color but did great for B&W.

@joelavcoco 3 года назад

Yes, you can only digitize in color with it if you feed it color filtered images, with gels using a B&W camera, or using an electronic color splitter with a color camera. One of my friends had one of those color splitters and a camcorder with a digital freeze frame. With that he could freeze a shot and then digitize the separate red, green, and blue images using a Digi-View and his Amiga 2000. We also used it one afternoon on my CoCo 3 with my DS-69B video digitizer. Tim Jenison, the New-Tek guy was involved with the design of that digitizer as well.

@johnsouthern6089 3 года назад

@@joelavcoco I had to use the old family camcorder, which was one of those early generation ones without a VHS or BETA cassette deck built in. You needed your own VHS recorder. The quality was not that good but at 320 X 200, it was good enough to get some interesting results at the time.

@WY.C64-Guy 3 года назад

13:55 ... Was the old "Power" on upside down...? Great video, Adrian! While Commodore 64 was the computer I grew up with in my house, the Apple ][ was the computer that was in my classroom and/or computer lab from 2nd grade, all the way through Jr. High (9th grade, in my case) so I had to adapt to use both and have some fond memories of the machine. Looking forward to the next video!

@m1geo 2 года назад

Those really do look like real wafers! I've seen a few that were given to colleagues as "gifts" when a project taped out when the wrong ROM code rendering the design useless! I would love one of my own, but don't want to get one that way! ;)

@Aruneh 3 года назад

PEZ, now that brings back memories.

@BrianRRenfro 3 года назад

You can't just pull out "the towel" without verbally acknowledging the towel and it's aesthetic.

@wazhoola14 3 года назад

Class comment. Not sure anyone else is appreciating though.

@stevesstuff1450 3 года назад

Hey, as long as you know where your towel is, you’re hoopy, frood... 👍

@BertGrink 3 года назад

@@stevesstuff1450 even better when the towel is soaked in nutrients, eh?

@swilwerth 3 года назад

Does Stewart worked on Rockwell? That wafer pictures could be gems. Ask him about high speed ADCs and/or DSP video processors. Thank you for showing us up that material!