David is the only other guy that gets my okay as permanent second host besides dave. Great job you two!
@Anzac977 жыл бұрын
Excellent video Dave2, well presented. I hope to see more of you on here!
@aladaris7 жыл бұрын
Great! More David!
@RichardDePas5 жыл бұрын
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.
@ixamraxi3 жыл бұрын
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.
@PlasmaHH7 жыл бұрын
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...
@PlasmaHH7 жыл бұрын
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.
@SidneyCritic7 жыл бұрын
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.
@MindMeetMaker7 жыл бұрын
Thumbs up for Dave2 👍
@CliveChamberlain9467 жыл бұрын
Dave2 - The light levels are kind of bland on this one and shadows increased. You guys rearranging the shop again?
@AmericanLocomotive17 жыл бұрын
Video is very underexposed
@davidledger59417 жыл бұрын
Haha! Yep, That is because I am terrible with cameras.
@JONOVID7 жыл бұрын
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.
@thekaiser43337 жыл бұрын
This man is an imposter. I called Olympus. He is NOT a certified Olympus technician.
@AskAScientistShow7 жыл бұрын
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.
@shomonercy7 жыл бұрын
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
@jimquinn7 жыл бұрын
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.
@sahalin123457 жыл бұрын
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... :)
@rocketman221projects7 жыл бұрын
Now you just need to build a new workbench with a half ton steel top to get rid of the vibration.
@RWoody19957 жыл бұрын
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-sv2hc7 жыл бұрын
Put the heavy table on suspension.
@richfiles7 жыл бұрын
I "Zee" what you did there Dave!
@AndrewSkow17 жыл бұрын
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!
@ppdan7 жыл бұрын
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
@diabolicalartificer7 жыл бұрын
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.
@ChipGuy7 жыл бұрын
David's first video. Winner winner chicken dinner!
@SixtenTheMinecrafter7 жыл бұрын
Good video David!
@rubber200217 жыл бұрын
I use multisurafce /wvinigar windex, and simple green myself. Ajax seemed to be too aggressive.
@redtails7 жыл бұрын
Great work man. young youtubers unite!
@macdonalds19727 жыл бұрын
How many years did David go to university to end up cleaning a second hand microscope?
@sokolum7 жыл бұрын
Wished I could see results of before and after the cleaning...
@urdnal7 жыл бұрын
3:04 as a Canadian, this was my first thought too
@Forssa17 жыл бұрын
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_Langley7 жыл бұрын
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.
@Forssa17 жыл бұрын
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_Langley7 жыл бұрын
Agreed. Looks like it's just us two commenting on this.
@davidledger59417 жыл бұрын
Yup, I concur, I'm not even in the office lol its Sunday. I responded to Graham's comment above.
@bendirval36125 жыл бұрын
Where is part 1? Can you link to it in the description?
@dasuboot1237 жыл бұрын
Why not simply put all the parts inside of a dishwasher altogether with one of these "100% free of streaks" tabs?
@NorbertHarrer7 жыл бұрын
Nice video. Wouldn't mind more of David.
@OsmosisHD7 жыл бұрын
Athelstan has returned!
@Eo_Tunun7 жыл бұрын
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.
@jam997 жыл бұрын
David, you need to take control of editing next! Ahahaha.... the power. Loving the comedy bench PSU.
@ShaneGadsby7 жыл бұрын
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!
@chadcole74154 жыл бұрын
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.
@heirheinrichvonscrofula91517 жыл бұрын
Dave, Bulbs grow, Lamps glow.
@Ozziepeck117 жыл бұрын
that heatsink is probably from the PCH on an intel based motherboard. (if it was from a computer motherboard that is)
@chimerahitman7 жыл бұрын
Dave forgot to say chicken dinner
@fastlingo7 жыл бұрын
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.
@MrFullfatt7 жыл бұрын
Well done Dave,well done 👍
@MeiklesAndDimes7 жыл бұрын
Nice video! I appreciate the different style.
@AntiProtonBoy7 жыл бұрын
Good to see you back on here David 2.0. Do more vids!
@danijel1246 жыл бұрын
Would it hurt the lens to use an air compressor?
@bbreeuwer45777 жыл бұрын
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? :(
@userPrehistoricman7 жыл бұрын
I reckon the microscope is dearly offended by the USB current source, yes
@jaycee19807 жыл бұрын
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.
@userPrehistoricman7 жыл бұрын
Would you prefer verbosity such as "USB-powered constant current source"?
@bbreeuwer45777 жыл бұрын
Who said that there is something 'wrong' with it?
@janbarthelmes17007 жыл бұрын
I think the audio volume was too low at some points but overall it was comprehensible - even for a non-native speaker
@ifrit057 жыл бұрын
I'm a Yankee and I still say "Zed".
@tedvanmatje7 жыл бұрын
nasal schmoo turns to epoxy over time, eh? will note that down in case I run out...and it's biodegradable ;)
@joopterwijn7 жыл бұрын
Nice speed!
@68transistor7 жыл бұрын
cotton scratch lens ! you should use "Joseph" paper !
@LutzSchafer7 жыл бұрын
I disagree. Industrial grade super clean cotton is generally recommended.
@Hasitier7 жыл бұрын
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?
@Vidicon317 жыл бұрын
on the 2nd channel uploaded on Sep 3, 2015
@Hasitier7 жыл бұрын
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 ;-)
@Aperson-sv2hc7 жыл бұрын
I'm American. I've caught myself saying "zed" a few times.
@tohopes7 жыл бұрын
3:03 Dave, come on, that's not fair. Inserting yourself during edits and what-not.
@sarah13907 жыл бұрын
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?
@LateNightHacks7 жыл бұрын
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
@davidledger59417 жыл бұрын
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 :)
@janbarthelmes17007 жыл бұрын
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.
@qwertyasdf667 жыл бұрын
The voice over was only echoing what I was shouting at my monitor, anyway : )
@meisam95927 жыл бұрын
This kinda reminds me of the young David-1 before losing his genuine Aussie accent!
@mxskelly7 жыл бұрын
Super cool, Dave2 is great on video! Love it!
@ridonculous83747 жыл бұрын
why don't you use high CRI LED? maybe like nichia 219b
@Jakob61744 жыл бұрын
Why would you like allen keys? Do you enjoy carpal tunnel?
@rubber200217 жыл бұрын
Dave 2 knows of Dr. Murphy... wonderful!
@deelkar7 жыл бұрын
What? (almost) no Dave? I feel cheated! ;-)
@robertmosen61267 жыл бұрын
Watched him doing the plasma TV repair, seems like a fun dude. Is he doing some uni-essay-work at your workshop?
@randomnight9357 жыл бұрын
What type of camera's connected to the microscope? usb, vga or hdmi?
@RWoody19957 жыл бұрын
its either in the previous video or one of the eevblog2 videos he shows the specific camera used.
@Graham_Langley7 жыл бұрын
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.
@davidledger59417 жыл бұрын
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_Langley7 жыл бұрын
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.
@FurrySergal7 жыл бұрын
Great video, but you should stay far away from micro USB. You will find great success.
@TheMrVicist7 жыл бұрын
I'd forgotten about the other David. Good job, though. Thumbs up.
@bloodyl_uk7 жыл бұрын
Hot snotting the micro USB socket, a great start for David2... getting it all out of the way.
@JGunlimited7 жыл бұрын
I though the operating term on EEVblog was "hot snot"
@christophertstone7 жыл бұрын
The drawer unit at 13:27, anyone know where to get a cheap version of that? Maybe Ali Express?
@big12boylp7 жыл бұрын
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.
@SaturnV20007 жыл бұрын
Us Amuhrikan amateur radio ops use "Zed" !
@stickycricket27 жыл бұрын
Don't you need a part 1 to have a part 2?
@ws_stelzi797 жыл бұрын
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.
@gatotacha5 жыл бұрын
Gracias, muy buen trabajo
@Maku2547 жыл бұрын
Is 01:41 on the clock.
@LastofAvari7 жыл бұрын
3:00 lol :D
@B._Smith2 жыл бұрын
He is unofficially a Yankee now 😆 🤣
@james-55607 жыл бұрын
Hopefully the first of many
@becky156757 жыл бұрын
can you NOT cut bits out. thank you
@lasersimonjohnson7 жыл бұрын
well done David.. :)
@idoaricha7 жыл бұрын
the lighting is terrible in this video
@jimkirk3607 жыл бұрын
love the new content keep it coming
@isaacreich62717 жыл бұрын
Yay! David2!
@AstAMoore7 жыл бұрын
“Winnuh!”
@lilshawn27 жыл бұрын
Little bit of missing information (added later through annotations) but overall really good. Nice work dave2
@Bigrignohio7 жыл бұрын
I assume all the "thumbs down" are from people upset that every video does not star Dave1?
@RicoElectrico7 жыл бұрын
So we should thumb this up to fuck with them :>
@finntolderlund27897 жыл бұрын
Maybe people would press thumbs up if he said "winner winner chicken dinner" a couple of times, and Bob's your uncle.
@guillep2k7 жыл бұрын
Or perhaps the video wasn't that interesting. It's a good start, though.
@basshead.7 жыл бұрын
I think I speak for everyone here when I say nobody cares how to clean a microscope.
@EEVblog7 жыл бұрын
basshead Yet you clicked on a video with that title and then proceeded to comment on it, why?
@rannyday26356 жыл бұрын
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..............
@MrGopiii7 жыл бұрын
jajaja new flavors to eevblog
@roberthackett66847 жыл бұрын
Where is "Part 1"?
@rubber200217 жыл бұрын
next to tuv of coarse1
@RWoody19957 жыл бұрын
the other video labeled episode 992 maybe...
@JLSoftware7 жыл бұрын
Crusty and sticky stuff? Where'd you get this thing from - a sperm donor clinic?
@davidledger59417 жыл бұрын
Unknown.
@DavidJapanese7 жыл бұрын
Good first video David 2, i like the Dave 1 and David 2 mash up.
@davegtar7 жыл бұрын
New number.... Who dis?
@daveblane64427 жыл бұрын
WHO is this guy? WHY do we care about cleaning a microscope? Dave needs to clear out the HOARD.
@RWoody19957 жыл бұрын
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
@QLTD7 жыл бұрын
Dave II, awesome!
@abdullahseba43757 жыл бұрын
Part 1?
@abdullahseba43757 жыл бұрын
Ah!
@abdullahseba43757 жыл бұрын
Still confusing tho.
@lasersimonjohnson7 жыл бұрын
Zeeeeeeeeee.... hahaha
@NoName-bt3oy7 жыл бұрын
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 KZfaq.
@onjofilms7 жыл бұрын
Hey, David is back!
@KD0CAC7 жыл бұрын
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_Langley7 жыл бұрын
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.
@davidledger59417 жыл бұрын
I am an Aussie from birth. Dave and I grew up in different areas and times in Sydney.
@shakaibsafvi977 жыл бұрын
nice addition....
@pinkpanther53794 жыл бұрын
I need to service my scope bc there are not shops in this one horse town for microscopes. The title is misleading. WASTED MY TIME. (no thumbs up)
@IIGrayfoxII7 жыл бұрын
You mixed up the Y and Z axis. Y is up and down and Z is depth.
@user-marco-S7 жыл бұрын
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.
@leonardocafferata66977 жыл бұрын
i come back after a few weeks and someone removed dave from dave's channel. unsub!. (just kidding , idc)