EEVblog #1221 - Mailbag Monday

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  • Published on Jun 17, 2019
  • Mailbag Monday
    Forum: www.eevblog.com/forum/blog/eevblog-1221-mailbag-monday/
    SPOILERS:
    Fran Blanche's Apollo DSKY T-Shirt
    thexvid.com/video/zLHFy6m6_M0/video.html
    Ollie: Voice control for oscilloscopes
    github.com/jmwilson/ollie
    Using Snips: makers.snips.ai/
    BreadShield Crowd Supply Project: www.crowdsupply.com/loser/breadshield
    Soviet era MKU-1 Calculator New-In-Box!
    Aprilog SMD test adapter www.aprilog.com/
    Relay Timer design
    Vintage HP PCB's
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  • Science & TechnologyScience & Technology

Comments • 387

  • frednerks
    frednerks 28 days ago +178

    That calculator display is not bad. The silver material at the back of the display is probably barium material from the getter just like you find in audio vacuum tubes. If it is still silver it indicates that the vacuum has not escaped :) If it was white it would indicate that air had gotten inside and oxidized the barium. So the calculator is still worth fixing

    • Ratzfaz
      Ratzfaz 25 days ago

      ​@Джон Доу If such a tube releases her vacuum, you can suffocate next to the tube...
      I am glad that the transistor was invented.

    • Джон Доу
      Джон Доу 26 days ago +1

      @Ratzfaz vacuum escapes to space, as long as there's a leak - it evaporates. Everybody knows that vacuum is a liquid.

    • Landynplayz KD9NBQ
      Landynplayz KD9NBQ 27 days ago +2

      @Simon A you can't visually identify a leaking pin but you can tell if the tube has gone to air if the getter is white or if it's gassy if the tube emits a purpleish glow when operating. for voltage regulator tubes, which are cold-cathode, they're filled with neon or argon so those are supposed to glow.

    • Landynplayz KD9NBQ
      Landynplayz KD9NBQ 27 days ago

      @Ratzfaz air going in which makes it no longer a vacuum

    • Ratzfaz
      Ratzfaz 27 days ago

      ​@Landynplayz KD9NBQ if a pin leaks, do the vacuum escape ? really ? or is air going in ?

  • David H. Jones
    David H. Jones 7 days ago

    I m David Jones , too,

  • Projectoxcart
    Projectoxcart 10 days ago

    I just saw this and tweeted the DSKY T-Shirt to my friend Nick Howes @Nickastronomer on twitter who has been searching for the Apollo 10 Lunar Mosule Awscent stage in solar Orbit, His friends have the Working Apollo Computer.

  • AllTheGearNoIdea
    AllTheGearNoIdea 17 days ago

    Hope your feeling better soon.

  • Ronald Youvan
    Ronald Youvan 18 days ago

    The HP digital card appears to be a video digitizer and usually it's stream would be muxed in with many more in a fiber cable channel and demuxed out at the destination. (fiber ring)
    Usually the A-D clock rate would be three times the color frequency.
    The calculator's display silver is indeed the getter in that vacuum tube.
    It is a shame that he didn't test the fuse and if good measure the power supply's output Voltage. (should be two: for the logic and for the tube {? 20 V. ?} )

  • mbaker335
    mbaker335 18 days ago

    I would love to see a Scotsman try and use the oscilloscope voice control. There is a brilliant youtube video of one trying to get his car to understand his accent and failing. BTW, good luck understanding it as well, totally incomprehensible..

  • Travis Parker
    Travis Parker 20 days ago

    They should have made the trigger phrase "Kenneth"
    "What's the frequency, Kenneth?"

  • Pl0dman
    Pl0dman 20 days ago

    I think the HP cards are from o token ring network controller but I maybe wrong. I just remember seeing something similar back in the early 90's.

  • John Coops
    John Coops 21 day ago

    Far too much time spent on boring, useless and inane commercial products.
    Arduino breakout boards.... meh, as if the world needs any more.
    That timer...fuck me, that is just shit. I know we are supposed to be kind to the speshul people, but please, think of the kittens!
    (and your poor viewers who have to endure this shit). I actually dozed off at about 20 minutes in!

  • Mike Pepper
    Mike Pepper 22 days ago

    HP board is either VME or VXI - part of a racked up test rig, maybe. Watch that ECL - I've burned my fingers on those things, they run very hot, (non saturating, power invariant output stages). ECL was the fastest logic on the planet at the time, as used in the Cray-1.

  • richfiles
    richfiles 22 days ago

    I got an Elektronika MKU _YEARS_ ago. Mine is all black. It shipped from Ukraine in _a burlap sack,_ and managed to make it the ENTIRE way to my door intact... Then it got knocked off the table by someone at my place 10 minutes after I received it, cracking the VFD... I was so furious! I was able to get a replacement for the VFD for very cheap. I think I only spent $15, so it wasn't too bad. It still blew me away that it could travel half way around the world in a friggin' potato sack, yet not survive the people I lived with at the time for 10 minutes! Now I can just laugh at how absurd that was! XD

  • Poor Username
    Poor Username 23 days ago

    Hi, I bought a mini-pc i found the wifi/bluetooth right next to the power button, I have ordered a metal case, What do you recommend i do with the cables, I was thinking of rotating them but their is components behind, photo link follows, i.imgur.com/6A4JGhm.jpg

  • ZEE- Lab
    ZEE- Lab 23 days ago

    wow what a knife

  • GRBTutorials
    GRBTutorials 23 days ago

    Well, it's a bit difficult to select some measurements on my -DS1054Z- DS1104Z, so that voice control thing might come in handy... Though some quick access buttons would also be nice.

  • Chun Ho Kong
    Chun Ho Kong 23 days ago +1

    No need to put SAR in Hong Kong, just plain and simple "Hong Kong" is enough.

  • Rodrigo Andrés Beltrán Politeo

    Hey Snips! hahahah I reminds me of "Baaark, baaark" of Anti-Bark Collar from DiodeGoneWild hjahah

  • Bora Yurtoren
    Bora Yurtoren 24 days ago

    I'm sure they made an Aussie one special for you. :-)

  • Paul Spiller
    Paul Spiller 24 days ago

    When are you gonna start wearing men's size shirts? Instead you still wear kids size 7_10 years old😭🤣. I'm telling yeh? If you do the same with your Y Wams #thunder-pants, your gonna get locked up😭🤣😂😝😜🤪🤔🤭love your work

  • Thomas Kolbe
    Thomas Kolbe 24 days ago +1

    That HP board is a STM-1 (1x VC-4) SDH serial interface card of some sorts, telco stuff, my guess is that it's used to monitor the timing of the signal as it has to be pretty precise.

  • Brad Leigh's Audio Engineering Lab

    When I visited the Soviet Union in about 1987 most shops used and abacus to add up your bill so this calculator is pretty hot stuff. Like most russian stuff simple clean and overbuilt.

  • DasBreaker
    DasBreaker 25 days ago

    Dat Shirt! Applied Science anyone?

  • Rik van der Mark
    Rik van der Mark 25 days ago

    Now that Snips project is really cool. Must have been a lot of work!
    I'm impressed with how well it works. Voice recognition is more often terrible instead of usable

  • Jason Day
    Jason Day 25 days ago

    It's okay Charlie Day

  • Stuart Wilson
    Stuart Wilson 25 days ago

    Snips show channel one, and show channel six. Hey snips, sells sea shells by the snips shore.

  • volvo09
    volvo09 25 days ago

    Love the thumbnail! "Do not drop", yeah, but it doesn't say do not kick!

  • S Robins
    S Robins 25 days ago

    Good Stuff Dave I love it.

  • Viktor Evil
    Viktor Evil 25 days ago

    RC Thing is part of "К165ГФ3" - 4-phase clock generator

  • Garfish
    Garfish 26 days ago

    "What's on channel 2?"
    Sounds like something my Dad would've asked me when watching tv!

  • Raffael Loiskandl
    Raffael Loiskandl 26 days ago

    🐀

  • Serg Podolnii
    Serg Podolnii 26 days ago +1

    МКУ1 means - micro-calculator universal (model 1)

  • Les Hemmings
    Les Hemmings 26 days ago

    Some disabled people would love that voice control!

  • Nicholas Brown
    Nicholas Brown 26 days ago

    IA is iowa USA

  • Suraj Grewal
    Suraj Grewal 26 days ago

    You don't have the speakers connected to voice control adaptor

  • Luka Kosanovic
    Luka Kosanovic 27 days ago

    display is fine, silver thingy is the getter compound, vacuum is ok, and the unit is probably an easy fix

  • artem65535
    artem65535 27 days ago

    2:34 Space Odyssey joke =)

  • ethanpschwartz
    ethanpschwartz 27 days ago

    Those zif sockets for your multimeter are $85. You can buy tweezers with banana plugs for $7 on Amazon.

  • tablatronix
    tablatronix 27 days ago

    Those smd sockets are crazy cool

  • Grant Rennie
    Grant Rennie 27 days ago

    11:11 IA is Iowa USA 🇺🇸

  • Ben The Shrubber
    Ben The Shrubber 27 days ago +1

    'half a puffteenth of a nanosecond'(tm)

  • Hauptwerk Hardware
    Hauptwerk Hardware 27 days ago

    Frantastic....

  • iCQ.www-SPCL-tk
    iCQ.www-SPCL-tk 27 days ago

    the +1 is for fran

  • daniturn3
    daniturn3 27 days ago

    i think in 2019 with all these mail bags think we should try and get people to package with less one use plastics and more with eco friendly packaging maybe

  • Rotten Brainz
    Rotten Brainz 27 days ago

    was that voice commander written by a femenist "hey snips" sounds suspect to me.

  • Oliver Isailovic
    Oliver Isailovic 27 days ago

    Hehehe...Cool... So cute device!!! Bravo Ollie!

  • Willy Nebula
    Willy Nebula 27 days ago

    80s electronics
    Best electronics!

  • Thorham
    Thorham 27 days ago

    Sludge on your tip... time to take a shower.

  • thekaduu
    thekaduu 27 days ago

    Hats off to the scope voice command design... But, Dave, if you are holding your tongue in the "right" angle, how can you speak clearly?

  • Shroom Duke
    Shroom Duke 27 days ago

    ...waiting for Dave to rip off the shirt exposing a rectangular chemical burn on his chest... LOL guess the shirts are chemically safe.

  • The Current Source
    The Current Source 27 days ago

    No video is complete without the Hoff

  • Martin Kuliza
    Martin Kuliza 27 days ago +1

    RE 34:12
    "Have no idea what that says"

    Hi Dave
    it says.....

    Converted from Russian Cyrillic to Latin Letters
    ELEKTRONIKA MKU1

    Pronounced as ELECTRONICA MKU1

  • Landynplayz KD9NBQ
    Landynplayz KD9NBQ 27 days ago

    what i'm thinking is that silver material is similar to the getter material in a vacuum tube. silver is good, brown means the tube is worn out, and white means it's gone to air.

  • Andy Grace
    Andy Grace 27 days ago

    Decoding something meaningful: 68K processor so I presume you merged low and high bytes from the EPROMs Dave? Remember it's Motorola and a 16 bit data bus so the code is little endian format.

  • Ilya Dorokhov
    Ilya Dorokhov 27 days ago +5

    I'm from Russia and I want this calculator fixed! Let me know if you need help with translation.
    BTW, I'm the same age as it is.

  • Andy Grace
    Andy Grace 27 days ago

    Interesting HP 68K board and the TTL->ECL logic interface card - from a late 80s/early 90s microwave link frame? 34Mbps and 140Mbps were standard trunk speeds for regional point-to-point networks. Early ATM sometimes ran at 140Mbps over fibre (instead of 155Mbps) This was state of the art in that frame relay/ATM era.

  • Simon A
    Simon A 27 days ago

    Wait!!! Not enough stuff for every week???!! I'll dig something out..

  • Captain Peroxide
    Captain Peroxide 27 days ago +3

    Next video, tearing down David Hasselhoff's blinking jacket.

  • Simon A
    Simon A 27 days ago

    Those zif smd test sockets are gorgeous! Dave what part are those lcr tweezers??
    Too many smd parts on my floor gone forever!

  • OH6BPL
    OH6BPL 28 days ago +1

    Stabilock

  • nlr70
    nlr70 28 days ago

    Great

  • Nasha UT
    Nasha UT 28 days ago

    Does snips require an internet connection? If yes, might be why it takes that long to execute commands: the AI voice recognition engine and/or parsing is "abroad"... Anyone can confirm?

  • Anderen2AJS
    Anderen2AJS 28 days ago

    Will your 555 t-shirt be back in stock again any time soon?

  • electrotech5
    electrotech5 28 days ago

    Russian calculator is 'gonski' - LOL

  • Zao Siang Lee
    Zao Siang Lee 28 days ago +1

    The timer is just for learning and fun. I used what I got, so it's a mix of SMD and through-hole. I wish you would discuss about the calibration like how to measure its frequency and calculate its trim value. It's all in the MCP7940N datasheet and I believe people would love to see it because it's very educational.

  • Tim Karkach
    Tim Karkach 28 days ago +2

    О круто наша ЗЛЕКТРОНИКА)) Старый же калькулятор.

  • olipito
    olipito 28 days ago +3

    You got the dsky t-shirt, I'm so jealous

  • beartastic
    beartastic 28 days ago +1

    ...now lets just wait for Ben over at Applied Science to make you a electroluminescent version of that shirt?

  • Rob Janssen
    Rob Janssen 28 days ago

    Well, now I'm not silent anymore... . Rob

  • matthew Beddow
    matthew Beddow 28 days ago

    Thanks Dave , Hope you feel better soon . Strangely big clive got the same thing , spooky .

  • RedDragonUKTech
    RedDragonUKTech 28 days ago +1

    36:00 I think that’s the “Getter”. Normal in vacuum tubes.

  • Samuel Emmett Bray
    Samuel Emmett Bray 28 days ago

    Added 1 youbutt-beast token.