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  • Опубліковано 8 вер 2024

КОМЕНТАРІ • 155

  • @daBigR--
    @daBigR-- 7 років тому +76

    Welcome David!

  • @user-co2of9cm7l
    @user-co2of9cm7l 7 років тому +33

    David is the only other guy that gets my okay as permanent second host besides dave. Great job you two!

  • @Anzac97
    @Anzac97 7 років тому +40

    Excellent video Dave2, well presented. I hope to see more of you on here!

  • @aladaris
    @aladaris 7 років тому +49

    Great!
    More David!

  • @RichardDePas
    @RichardDePas 5 років тому

    We used to use these type of microscopes on air flotation tables. They were a bugger to get dialed in but it would allow them to be used vibration free.

  • @PlasmaHH
    @PlasmaHH 7 років тому +2

    For the fairness of all involved you should start adding freeze-audio overlays over your own videos too! As a replacement for the stupid removal of annotations...

    • @PlasmaHH
      @PlasmaHH 7 років тому

      yes, because making both features available is too much of a choice, and making them available on mobile devices too much of a technical difficulty.

  • @ixamraxi
    @ixamraxi 3 роки тому

    Hexane is what we were always told to use to clean lenses back when I was in lab, we were told to use this because its virtually non polar and because the carbon-hydrogen bond in special in that it doesn't interact with other materials (something about how its liquid state is maintained almost entirely via van der waals forces), where other commonly used solvents like xylene may be non-polar, but they contain aromatic rings which interact with other materials.

  • @SidneyCritic
    @SidneyCritic 7 років тому +2

    If that microscope was rigid from cam to lens to the specimen table, I don't think it would wobble because - it looks like the cam is moving separate from the wafer -. I'd be checking for play in the cam or specimen table.

  • @shomonercy
    @shomonercy 7 років тому

    Phew, I expected worse, not because of David's performance (well done), but because of Dave making him do vids on "How To Clean". ;D

  • @jimquinn
    @jimquinn 7 років тому

    Cotton will contain microscopic minerals, that will scratch the glass.
    I look at cellulose all the time in a SEM, at work. Natural materials
    are more contaminated.

  • @sahalin12345
    @sahalin12345 7 років тому

    Wow! that is so much difference in character with Dave and David. Not that there is anything wrong with David. But...that crazy aussie bloke... :)

  • @CliveChamberlain946
    @CliveChamberlain946 7 років тому +12

    Dave2 - The light levels are kind of bland on this one and shadows increased. You guys rearranging the shop again?

  • @thekaiser4333
    @thekaiser4333 7 років тому

    This man is an imposter. I called Olympus. He is NOT a certified Olympus technician.

  • @MindMeetMaker
    @MindMeetMaker 7 років тому +12

    Thumbs up for Dave2 👍

  • @AskAScientistShow
    @AskAScientistShow 7 років тому

    In relation to the shacking, if you clamp the sample to the solid microscope stage you'll reduce most of that. Also, in medical research we often have our better microscopes sitting on a 250-750kg stone table top and sometimes these tables will have mechanical dampers built into the legs.

  • @Forssa1
    @Forssa1 7 років тому

    The lm317 will drop over 3V in constant current mode. Since the LED needs 3V, this will not regulate with just a 5V power supply. LED gets no where near 300mA.

    • @Graham_Langley
      @Graham_Langley 7 років тому

      Exactly. Scanned down the comments expecting lots of people to have raised this but they don't seem to have.
      A standard LM317 needs between 1.5 and 2V to maintain regulation at 300mA depending of temperature. Add to that the 1.25V dropped across the current sense resistor and it's 2.75 to 3.25V.
      Looks like David needs a bit more practical electronics experience.

    • @Forssa1
      @Forssa1 7 років тому

      Easiest way to check if the the final circuit is regulating is to check the voltage drop over the resistor. It wont be 1.25V if the power supply is too low.

    • @Graham_Langley
      @Graham_Langley 7 років тому

      Agreed. Looks like it's just us two commenting on this.

    • @davidledger5941
      @davidledger5941 7 років тому

      Yup, I concur, I'm not even in the office lol its Sunday. I responded to Graham's comment above.

  • @rocketman221projects
    @rocketman221projects 7 років тому +3

    Now you just need to build a new workbench with a half ton steel top to get rid of the vibration.

    • @RWoody1995
      @RWoody1995 7 років тому

      i think he mentioned in the other video when he was using the microscope that the other desk he had it on was screwed down and very solid and yet still saw vibrations

    • @Aperson-sv2hc
      @Aperson-sv2hc 7 років тому

      Put the heavy table on suspension.

  • @AndrewSkow1
    @AndrewSkow1 7 років тому

    Hi Dave2, Lova ya so far, but I recommend you watch Crocodile Dundee about 30 times in a row. That way you can learn to play up the 'Strailianess we all love!

  • @JONOVID
    @JONOVID 7 років тому

    excellent education video by David and Dave -audio input . got to love the LED light bodge Job. it's a hobbyist classic
    is to avoid any one off pcb fabrication and just hot glue it. Hot Snot it!
    also it just goes to show why, a good consumer 3D printing service is useful for that one off 3D printing job. no everyone needs a 3D printer at home.

  • @ChipGuy
    @ChipGuy 7 років тому

    David's first video. Winner winner chicken dinner!

  • @rubber20021
    @rubber20021 7 років тому

    I use multisurafce /wvinigar windex, and simple green myself. Ajax seemed to be too aggressive.

  • @richfiles
    @richfiles 7 років тому +8

    I "Zee" what you did there Dave!

  • @ppdan
    @ppdan 7 років тому

    The trick with hex keys is that you need a metric and a imperial set ;)
    I used to work as a sound and light tech and we mostly used JBL speakers. You could tell if the speaker was made in USA when it had imperial hex screws :D

  • @macdonalds1972
    @macdonalds1972 7 років тому +4

    How many years did David go to university to end up cleaning a second hand microscope?

  • @diabolicalartificer
    @diabolicalartificer 7 років тому

    The speeded up video bugged me a bit, I don't mind a bit of waffling. Re, the "dirty" inside of top tube thingy, David's obviously never mucked pigs out or changed a nappy; that's dirty. Not bad for a 1st video David, you need to slow down a bit though. No worries, I know how hard it is to relax when filming yourself.

  • @sokolum
    @sokolum 7 років тому

    Wished I could see results of before and after the cleaning...

  • @fastlingo
    @fastlingo 7 років тому +1

    never clean lenses with a dry cloth, no matter how soft it is. there are lots of small hard particles in that dust that will scratch the lens when you move them around. the only way to do it is with something wet.

  • @heirheinrichvonscrofula9151
    @heirheinrichvonscrofula9151 7 років тому

    Dave, Bulbs grow, Lamps glow.

  • @Ozziepeck11
    @Ozziepeck11 7 років тому

    that heatsink is probably from the PCH on an intel based motherboard. (if it was from a computer motherboard that is)

  • @SixtenTheMinecrafter
    @SixtenTheMinecrafter 7 років тому

    Good video David!

  • @NorbertHarrer
    @NorbertHarrer 7 років тому

    Nice video. Wouldn't mind more of David.

  • @Aperson-sv2hc
    @Aperson-sv2hc 7 років тому

    I'm American. I've caught myself saying "zed" a few times.

  • @dasuboot123
    @dasuboot123 7 років тому

    Why not simply put all the parts inside of a dishwasher altogether with one of these "100% free of streaks" tabs?

  • @redtails
    @redtails 7 років тому

    Great work man. young youtubers unite!

  • @tedvanmatje
    @tedvanmatje 7 років тому

    nasal schmoo turns to epoxy over time, eh? will note that down in case I run out...and it's biodegradable ;)

  • @OsmosisHD
    @OsmosisHD 7 років тому

    Athelstan has returned!

  • @chimerahitman
    @chimerahitman 7 років тому

    Dave forgot to say chicken dinner

  • @bendirval3612
    @bendirval3612 5 років тому

    Where is part 1? Can you link to it in the description?

  • @ShaneGadsby
    @ShaneGadsby 7 років тому +1

    Great to see Dave2 in a video; would have been even better if he'd used Fusion 360, instead of onshape though, haha!
    Keep being awesome you two!

  • @ifrit05
    @ifrit05 7 років тому

    I'm a Yankee and I still say "Zed".

  • @Eo_Tunun
    @Eo_Tunun 7 років тому +1

    Is that David's first official channel one video at all? There was the one with the 3D-printer, right?
    One thing that came to my mind while I was watching this video was: While you're at hacking the light, wouldn't it be possible to add a mount for lasers, so you could use the scope to measure thicknesses of layers by interferometry? Would such an addition be helpful for analysing ICs or anything?
    I know it's a whacky idea, but I guess it would be possible.

  • @urdnal
    @urdnal 7 років тому

    3:04 as a Canadian, this was my first thought too

  • @chadcole7415
    @chadcole7415 4 роки тому

    Hey! Any chance we can get a link to the 3d printer files for the adapter you've done up? I just got one of these scopes myself and the bulb is missing so I figured I'd attempt your mod! Thanks.

  • @bbreeuwer4577
    @bbreeuwer4577 7 років тому +2

    Hi Dave 2. Interesting first official video!
    Tiny bit of advice, maybe you could talk a hair slower and pronounce a hair better. That's all.
    Just one little thing. Such a fine piece of gear. Does that really deserves only just a botched together current source? :(

    • @userPrehistoricman
      @userPrehistoricman 7 років тому

      I reckon the microscope is dearly offended by the USB current source, yes

    • @jaycee1980
      @jaycee1980 7 років тому +1

      It's not really a "USB current source". Just using a USB connector as a source of 5v.
      There's also nothing wrong with using an LM317 for this task.

    • @userPrehistoricman
      @userPrehistoricman 7 років тому

      Would you prefer verbosity such as "USB-powered constant current source"?

    • @bbreeuwer4577
      @bbreeuwer4577 7 років тому

      Who said that there is something 'wrong' with it?

    • @janbarthelmes1700
      @janbarthelmes1700 7 років тому

      I think the audio volume was too low at some points but overall it was comprehensible - even for a non-native speaker

  • @jam99
    @jam99 7 років тому

    David, you need to take control of editing next! Ahahaha.... the power. Loving the comedy bench PSU.

  • @meisam9592
    @meisam9592 7 років тому

    This kinda reminds me of the young David-1 before losing his genuine Aussie accent!

  • @AntiProtonBoy
    @AntiProtonBoy 7 років тому +3

    Good to see you back on here David 2.0. Do more vids!

  • @MrFullfatt
    @MrFullfatt 7 років тому

    Well done Dave,well done 👍

  • @TheMrVicist
    @TheMrVicist 7 років тому

    I'd forgotten about the other David. Good job, though. Thumbs up.

  • @Graham_Langley
    @Graham_Langley 7 років тому

    Looks like David needs a bit more practical electronics experience.
    A standard LM317 needs between 1.5 and 2V to maintain regulation at 300mA depending of temperature. Adding the 1.25V dropped across the current sense resistor takes that to 2.75 to 3.25V, leaving a 1.75V max load voltage drop in order to maintain regulation on a 5V supply.
    Measuring the current into a short presented by an ammeter isn't going to show the current into the LED dropping 3V.

    • @davidledger5941
      @davidledger5941 7 років тому

      Hopefully your not trolling and want an actual response.
      This was a two birds with one stone solution, if inadequate current (less than 300 mA) achieved sufficient brightness then job done. If not power from an alternate source and get the full 300mA. It was only a few minutes of work for a solution for both scenarios. I probably should have kept more footage, not very good at editing at the moment and I wasn't sure what to keep. In both scenarios the LED is safe from over current. Device is temperature stable at 300mA, building is aircon'd + heatsink sufficent.
      If your curious its running at about 50% relative luminous flux (166mA) what it could, at 300mA it would be at about 80%. We didn't yet need the extra brightness, might later, we will see.
      I know that the multimeter doesn't include forward voltage of LED or set drop, this is pretty basic and ultimately it didn't matter. It showed that I didn't pick the wrong resistor and that it wasn't open circuit or shorted, it also showed that the LM317 was functional as many were second hand. The test meant that I could be sure that I was indeed protecting the LED from over current for both scenarios.
      Thanks for the feedback, would you prefer longer videos with the extra details that fully justify a design decision or more like a project summery?

    • @Graham_Langley
      @Graham_Langley 7 років тому

      Why on earth do you think I'm trolling? You made a schoolboy error and I pointed it out. Trying to justify the error does you no favours.
      That's "you're" in the third para BTW.

  • @68transistor
    @68transistor 7 років тому +1

    cotton scratch lens ! you should use "Joseph" paper !

    • @LutzSchafer
      @LutzSchafer 7 років тому

      I disagree. Industrial grade super clean cotton is generally recommended.

  • @joopterwijn
    @joopterwijn 7 років тому

    Nice speed!

  • @danijel124
    @danijel124 6 років тому

    Would it hurt the lens to use an air compressor?

  • @ridonculous8374
    @ridonculous8374 7 років тому

    why don't you use high CRI LED?
    maybe like nichia 219b

  • @MeiklesAndDimes
    @MeiklesAndDimes 7 років тому +1

    Nice video! I appreciate the different style.

  • @Jakob6174
    @Jakob6174 4 роки тому

    Why would you like allen keys? Do you enjoy carpal tunnel?

  • @Hasitier
    @Hasitier 7 років тому +5

    Nice vid Dave 2. would like to see more of this kind of videos.
    BTW which was the video where Dave confronted Dave 2 the first time with that evil power supply? Would like to watch it again. Must have been 2 years ago or so?

    • @Vidicon31
      @Vidicon31 7 років тому +2

      on the 2nd channel uploaded on Sep 3, 2015

    • @Hasitier
      @Hasitier 7 років тому +1

      Thanks. That was nice to see again. I wonder how many minutes were cut out from this video figuring out again how that bastard works ;-)

  • @JGunlimited
    @JGunlimited 7 років тому

    I though the operating term on EEVblog was "hot snot"

  • @deelkar
    @deelkar 7 років тому +1

    What? (almost) no Dave? I feel cheated! ;-)

  • @FurrySergal
    @FurrySergal 7 років тому +1

    Great video, but you should stay far away from micro USB. You will find great success.

  • @tohopes
    @tohopes 7 років тому +10

    3:03 Dave, come on, that's not fair. Inserting yourself during edits and what-not.

    • @sarah1390
      @sarah1390 7 років тому +8

      tohopes would be very funny if dave2 did the same thing to dave1 if he got to editing as well. Thumbs up to dave2 being a permanant host. Though saying questioningly Power supply of doom? is there video of why this power supply earned the nickname?

    • @LateNightHacks
      @LateNightHacks 7 років тому +2

      yep, there is a video, gotta go back 6-8 months at least
      I just remember it being about power supplies, possibly a review, and then this came in on a tangent, it was about UI simplicity

    • @davidledger5941
      @davidledger5941 7 років тому +7

      I appreciate your response but its no problem, it was my idea for him to correct me. Its an Aussie joke, Aussies obsessively will correct you if you pronounce Z "incorrectly". It reckon it was a fun edit :)

    • @janbarthelmes1700
      @janbarthelmes1700 7 років тому +1

      I liked the video. I also didn´t mind Dave's voice over. Don´t get me wrong, it wasn´t necessary - but it added even more value. Two heads are better than one.

    • @qwertyasdf66
      @qwertyasdf66 7 років тому

      The voice over was only echoing what I was shouting at my monitor, anyway : )

  • @SaturnV2000
    @SaturnV2000 7 років тому

    Us Amuhrikan amateur radio ops use "Zed" !

  • @mxskelly
    @mxskelly 7 років тому

    Super cool, Dave2 is great on video! Love it!

  • @randomnight935
    @randomnight935 7 років тому

    What type of camera's connected to the microscope? usb, vga or hdmi?

    • @RWoody1995
      @RWoody1995 7 років тому

      its either in the previous video or one of the eevblog2 videos he shows the specific camera used.

  • @rubber20021
    @rubber20021 7 років тому +2

    Dave 2 knows of Dr. Murphy... wonderful!

  • @gatotacha
    @gatotacha 5 років тому

    Gracias, muy buen trabajo

  • @robertmosen6126
    @robertmosen6126 7 років тому

    Watched him doing the plasma TV repair, seems like a fun dude. Is he doing some uni-essay-work at your workshop?

  • @christophertstone
    @christophertstone 7 років тому

    The drawer unit at 13:27, anyone know where to get a cheap version of that? Maybe Ali Express?

    • @big12boylp
      @big12boylp 7 років тому

      Christopher Stone I got mine in one of my local Hardware Stores (33 Drawers/Unit for 8.99€). The shipping costs from China will ruin the price advantage you get.

  • @stickycricket2
    @stickycricket2 7 років тому

    Don't you need a part 1 to have a part 2?

  • @ws_stelzi79
    @ws_stelzi79 7 років тому +1

    Hey a Surface. Has Louis Rossman seen this viedeo? (He doesn't belive that there is such a thing as a Surface in the wild.

  • @Maku254
    @Maku254 7 років тому

    Is 01:41 on the clock.

  • @bloodyl_uk
    @bloodyl_uk 7 років тому

    Hot snotting the micro USB socket, a great start for David2... getting it all out of the way.

  • @james-5560
    @james-5560 7 років тому

    Hopefully the first of many

  • @isaacreich6271
    @isaacreich6271 7 років тому

    Yay! David2!

  • @LastofAvari
    @LastofAvari 7 років тому +1

    3:00 lol :D

  • @Bigrignohio
    @Bigrignohio 7 років тому +10

    I assume all the "thumbs down" are from people upset that every video does not star Dave1?

    • @RicoElectrico
      @RicoElectrico 7 років тому +2

      So we should thumb this up to fuck with them :>

    • @finntolderlund2789
      @finntolderlund2789 7 років тому +7

      Maybe people would press thumbs up if he said "winner winner chicken dinner" a couple of times, and Bob's your uncle.

    • @guillep2k
      @guillep2k 7 років тому +1

      Or perhaps the video wasn't that interesting. It's a good start, though.

    • @basshead.
      @basshead. 7 років тому +3

      I think I speak for everyone here when I say nobody cares how to clean a microscope.

    • @EEVblog
      @EEVblog  7 років тому +12

      basshead Yet you clicked on a video with that title and then proceeded to comment on it, why?

  • @lasersimonjohnson
    @lasersimonjohnson 7 років тому +1

    well done David.. :)

  • @B._Smith
    @B._Smith 2 роки тому

    He is unofficially a Yankee now 😆 🤣

  • @MrGopiii
    @MrGopiii 7 років тому

    jajaja new flavors to eevblog

  • @jimkirk360
    @jimkirk360 7 років тому +2

    love the new content keep it coming

  • @lilshawn2
    @lilshawn2 7 років тому

    Little bit of missing information (added later through annotations) but overall really good. Nice work dave2

  • @rannyday2635
    @rannyday2635 6 років тому

    Dude!
    Do you know how lucky you are to be picked by "The Great Dave Jones" to be his "apprentice"?
    Quit thinking "I'm recording what are people gonna think.................?" in the back of your mind
    That's killing you!
    Get your confidence back!
    Speak your mind!
    Don't worry what we think!
    We are watching to find out what you think! LOL
    Quit pausing,studdering,second guessing yourself. I'm not sure but i think the master has said
    "GROW A PAIR"
    Man you have a great opportunity to do great things!
    Relax stop being nervous and speak your mind.......
    best wishes..............

  • @roberthackett6684
    @roberthackett6684 7 років тому

    Where is "Part 1"?

    • @rubber20021
      @rubber20021 7 років тому

      next to tuv of coarse1

    • @RWoody1995
      @RWoody1995 7 років тому

      the other video labeled episode 992 maybe...

  • @lasersimonjohnson
    @lasersimonjohnson 7 років тому +11

    Zeeeeeeeeee.... hahaha

  • @AstAMoore
    @AstAMoore 7 років тому

    “Winnuh!”

  • @abdullahseba4375
    @abdullahseba4375 7 років тому

    Part 1?

  • @davegtar
    @davegtar 7 років тому

    New number.... Who dis?

  • @JLSoftware
    @JLSoftware 7 років тому

    Crusty and sticky stuff? Where'd you get this thing from - a sperm donor clinic?

  • @DavidJapanese
    @DavidJapanese 7 років тому

    Good first video David 2, i like the Dave 1 and David 2 mash up.

  • @becky15675
    @becky15675 7 років тому

    can you NOT cut bits out. thank you

  • @NoName-bt3oy
    @NoName-bt3oy 7 років тому

    You'll have to adjust the camera!
    Dave II is a bit taller than the average Auzzy Oompa-Loompa. :P
    Nice vid, future is looking good for one of the best channels on UA-cam.

  • @daveblane6442
    @daveblane6442 7 років тому

    WHO is this guy?
    WHY do we care about cleaning a microscope?
    Dave needs to clear out the HOARD.

    • @RWoody1995
      @RWoody1995 7 років тому

      david aka dave2, has been working with dave for over a year on and off while also doing university which he recently finished. dave bought an old microscope, it needed cleaning, some people do care. mailbag = hoard :P

  • @KD0CAC
    @KD0CAC 7 років тому

    I thought Dave 2 was a yank ?
    He's seems to be affected / infected by the Aussie environment and picking up the accent ?
    ;)
    John

    • @Graham_Langley
      @Graham_Langley 7 років тому

      I took him to be from the UK when he first appeared - I commented on it at the time - but the Australian inflection is very infectious.

    • @davidledger5941
      @davidledger5941 7 років тому

      I am an Aussie from birth. Dave and I grew up in different areas and times in Sydney.

  • @idoaricha
    @idoaricha 7 років тому

    the lighting is terrible in this video

  • @onjofilms
    @onjofilms 7 років тому

    Hey, David is back!

  • @QLTD
    @QLTD 7 років тому

    Dave II, awesome!

  • @brownell10
    @brownell10 7 років тому

    Hell yeah, David! Get yank as frig on those "Zs", thumb your nose at the naysayers, and above all- go ape shit with electromechanical (ala 3D printer) technical stuff. It's the one thing I've yearned for here (I'm an auto tech, that's my whole electronics world; actuation)

  • @IIGrayfoxII
    @IIGrayfoxII 7 років тому

    You mixed up the Y and Z axis.
    Y is up and down and Z is depth.

    • @user-marco-S
      @user-marco-S 7 років тому

      I understand the confusion, but in this case it is correct, Z is the 3rd dimension. On the ground, map or piece of paper (or the table from the microscope), the dimensions are X and Y, the Z is the height above it.

  • @shakaibsafvi97
    @shakaibsafvi97 7 років тому

    nice addition....

  • @Darieee
    @Darieee 7 років тому

    Man dave, definitely a cool video, but you really need to neaten up you' game :)), keep up the good work !