EEVblog  

Hey Dave! Just found your EEVblog, I'm completely hooked! Keep up the great content! -new Fan from Syracuse, New York

Nice teardown as always - thank you Dave! The Pin 2 of the Silicon Labs F330 (@24:18) seems to miss some Solder. :D

For the signal routing, it would be interesting to see if you can detect a difference in the noise floor between the two channels. If you can and its got an FFT function it would interesting to see the spectrum.

Nice teardown, @Dave.

Happy Back to the Future day Dave!!!

EEVblog. I appreciate the work you put into these teardowns. I'm no electrical engineer, and likely never will be, but I find this stuff fascinating, and you're slowly teaching me.

Wow, new video already ?? Thank you crazy Australian Guy !!

"The penalty you pay when you go for a BGA FPGA" - untethered poetry.

There's a second unsoldered pin shown at 22:00. Great teardown video by the way, looks like a handy tool to have.

Always awesome videos, would not mind more repairs. Thanks :)

The "unsoldered pin" and "fallen out pin" is a cheap way to do DIY keying now you can't plug in certain revs of the board or accidentally reverse polarity in testing cables. Also the 0505S is indeed a 5v to 5v converter but the 'S' stands for single supply, so not a dual +/-5.

The TMS320 is still quite a capable DSP. In the early days of production they were used in high-end 3D graphics systems and even found their way into Midway's first 3D video game hardware where they served as both the main processor and the geometry engine at the same time.

Silabs makes 8051's with interesting peripherals for test gear. There is a thread about a µV/mΩ meter kit which uses a C8051F350. This is a brother of the microcontrollers in the video, it has a has a 24-bit adc and a 1-128x pga on board!

Didn't see a current shunt or fuse - but has a current range - what's the spec ? Maybe those mosfets are an electronic fuse ?

Checked in to see if you had a back to the future special :) Maybe a flux capacitor teardown??

Dave, you should do a teardown of a servo amplifier (motor driver). It would be cool !

How does this hand held scope compare to the 20 year old ths720 series hand held scopes. It would be interesting to see a tare down of one of these.

Happy back to the future day!

Happy Back-to-the-Future Day!

Is this a demo unit? The soldering quality on those inputs could improve during production and also they could correct the bodges so it looks all nice.

A cool feature with this scope is that is has a math function that perform series/parallel inductance and capacitance reactance calculation for inputted component values..

Very nice videos. There is any posibility of making any video regarding the bad usb killer ? And maybe made a circuit where you can plug any usb device and get a reading of the voltages to avoid putting a usb killer in a computer ?

I wonder, in digital scopes when you move the trace up and down is the scope only moving the trace on the display or is it changing some analog offset value before the ADC? Also as a German, what's wrong with calling it a multifunctional device? I mean it is multifunctional, no? Does it just sound weird or...

Dave you should you a fundamental Fridays session explaining memory types and how to read the datasheet. SHARC is still the leader in DSP :D

Well made easy to use

Love how you had trouble assembling it, happens to me from time to time and I just get very annoyed when it does happen. So I know how you must of felt when it kept happening to ya'., lol.

My question is, (and ,maybe I missed it, but is there a current cutoff, if is there is a thermal overload, should the fan fail or something like that? Anybody notice anything

Yayyy teardown!

+EEVblog I've never seen those tiny flush ICs before (the ones around the TI chip). Is that just the casing or is there something up with those?

could the front end adc be running in paired and use the two spare data lines for overflow?

Is that supercap similar to the one used in the fluke 298/7 causing problems?

A bit concerned with the missing solder under the F330 on one of the pins @24:00. Guessing it is a ground pin and the solder has gone in under the circuit to a ground tab. It is not pretty.

ok i have a 1958 heathkit o-12 scope i was wondering if there was any way to get a reading from a Jacobs ladder u have been trying but the Jacobs ladder really screws with everything in my lab and the scope is not even giving me a reading i think is true the trace just goes from scanning to like this messed up blob in the middle of the screen any ideas??

Does the (ground?) copper to the left of the ADC at 11:20 look a bit shoddy (bad etching or something)?

I would really like to hear more about Dave2 3D printer board project, perhaps a video could be made about it? Thanks!

+EEVblog how can you say that they aren't cutting corners when you see that most of the solder joints are rubbish?

How would it compete with Siglent SHS1062 which would you choose ?

Is that a cap or a battery on the cover image I’ve had them lie about caps before and just put in a battery and labeled it as a cap.

Seems like the 410 is the same sort of thing but not isolated. It's also much cheaper. I'm looking into a first scope for automotive use, so it's unlikely to be seeing above 15v or so. The built in meter function is quite interesting too. Do I really need an isolated scope? What are the advantages/disadvantages?

I would have expected David II to be David 1, and you the Dave 0 ;)

23:52 SIL C8051F330 Pin 2 (Ground) not soldered properly?

@26:06 what is that smd component soldered that way between the two pins of that chip? it looks awful.

Cool Cool can't wait to finish the video ;)

That thing seems to be a mixed bag, great design but poor manufacturing I guess! Lots of little things you pointed out, like the 2 little transformers (or common mode chokes) one looking a bit broken, C123 is missing and the solder did not reflow right, that bit of solder shard shorting 2 pins on that 8051 near the end, etc! I wonder if it would have even been fully functional before you took it apart!

I would love to have any of your things like a scope..since i have Never had one...I envy you for having all those toys....have a good day, or night...great video...

so, how many times did you need to rebuild it? I figured that you fixed the unsoldered pin before you put it back together the first time... But yeah, just hasn't been your day, it seems

I was waiting for you to test the actual frequency response...... Did you forget?

David2 ❤❤❤❤

Closing the scope back... tripple face-palm worthy ;)... Been there, it pissses me off every time I do it.

Fantastic stuff as usual. PS Watch Earth 2 available on VEEHD for free for 70s Apollo style nuclear bomb filled action. Bet this one passed you by. Some of it is excellent, some funny of course. Thanks Dave.

mosfet discharge, caps range?

320 solder it, am I right?

I'm sure I saw a spare screw on the desk when you finished... ;-)

That pin in the header socket (J57?) looks like an improvised polarising key. Shouldn't be needed in a PCB to PCB arrangement like this, but they may use ribbon cables somewhere in testing/faultfinding. That missing top on the choke is probably there only to give a flat surface for pick and place, nothing functional.

Wow, Dave2 know something! xD

Why have they not use a +-5cm longer coax cable? Coax is cheap and isolated.

I wonder why they did not just run the coax a few cm longer before they go into the board. Assuming that coax is more noise resistant than board traces.

I wonder if MicSig watch this and take note ?

The unsoldered pin is just a cheap key to prevent the connector to be plugged in the wrong way. Have seen that a couple of times.

is that a zebra laser printer i see in the background?

I just bought a couple Siglent Chinese O-scopes. It's very good, and as an American I'm pretty worried that China will be not only making the cheap stuff, but the good stuff too. We're doomed. I recently used AD7799BRUZ ADC's on a recent NASA project. They are 24 bit ADC's (which is overkill for a lot of stuff), but super easy to use and very stable. For that matter I suppose the refresh rate is way too slow for a o-scope. I've been wanting to make a multimeter specifically for aviation applications and might dust them off for that.

21:05 - I laughed so hard when I noticed that.)) I thought I'm the only person guilty of soldering pasive components directly to the ICs, but apparently it's Ok even for a few thousand dollar devices. xD

I spot lots of MC34063 action, yeah... I have a few of those in my M102v5 production design, and by using slightly oversized inductors and massively oversized caps I managed 10mV or less ripple on a 15V rail.

The extra bit on the common mode choke could there purely for Pick&Place purposes.

ha, Dave Junior still there :)

You seem impressed. But, the loose piece of solder, the unsoldered pin, and the "bodgered" resistors/caps make me surprised that it actually functions properly. Don't these defects scare you off, especially at a >$1000 price point?

Dodgy soldering for sure! If that is - like I think it is - a retail product and not a pre-series demo, then with those unsoldered pins and a few other suspecting bits I'd be pretty upset if I'd bought one. Personally I don't care how good something can be if they disregard things like QA and assembly inspection. I hope this video gave them something to act upon but I wouldn't spend my money on a Micsig product as it is now.

@28:30 I was laughing out loud. So funny. Easy to do ''haste pace'''etc

DAVE, you a big BTTF fan, where was the DeLeorian Time Machine Taredown ?

i am seeing a "404 not found" when clicking EEVblog. is the site down?

Design seem sound enough but QA is a problem.

WELCOME TO BACK TO THE FUTURE !

Did you at least forget to put the screws in, so putting all the other bits you forgot to put back would be easier? :P I have had those days... You need something to just take apart and scrap... GREAT stress relief! :D

+EEVblog Happy BTTF day. Sorry to hear about the movie theater plans - they have I and II showing here. I and III were probably the better ones.... "What the?!" Anyways, catch you next time! Edit: Of course, it has to do with the whole 'Oct 21, 2015' - facepalm

Despite our "Western" bias, the Chinese are perfectly capable of making good quality products. The problem is exactly what you see here: Quality costs money. If this scope were half the price of anything competing on the market, then it would be a no-brainer, but as it stands, the only thing to separate this scope from any other in the price range is the range of features it offers, and how those features meet the needs of the people buying it. Overcoming brand loyalty is a big challenge; hopefully Micsig can bring a lot to the table. :)

6:00 the corners of that chip are all broken. What can be inferred about the manufacturing process here?

Was expecting it to not turn cause you forgot the battery, lol.

Getting cold?

Why can't they throw in a nice 2048x1536 display on it. For that astronomically high price, they need to at least use a more modern resolution for their display. It also should have more memory (e.g., 1GB per channel would do nicely).

anyone else notice that "MICSIG" written on the back of the unit is in microsoft font.

24:02 Dat solder joint...

Hi, I'm mr. Micsig. How can I help you?

Are these kind of boards designed by one person alone? They are complex.

Listening to an expert talk about a subject you know little about sounds like this: Erflob concracker spoodlewhiff napperzolg. Inflecamotive zarry bounding, fetzimter noogie splatwasher. Immertle goonknacker, comined tetraflunastypill, immernobsplurfer.

i love this funny guy

no translation...why?

6:00 Altera CLONE! Obviously a fake.

Are you the voice of Wheatly from Portal 2? Anyone agree?

5:58 seems like the processor is a clone.

Could you explain what "Jellybean" means please

It all looks very pre-release to me. Expensive stuff left in, screening cans left off, bodge components. Full of "yeah I wouldn't do it like that" design decisions. The enclosure design looks a bit 10-years-ago to be honest, it looked good then (although not sure about the colour) but a bit cheap now. Anyone else noticed how the logo looks an awful lot like the Microsoft logo typeface? Dave Jones drinking game update: Every time he says "no wuckers" take a small sip. See if you can stand up at the end of the video.

I try to watch the adverts to support the channel but that Tesco Mobile is too annoying for me

20:26 is that C123 ripped off? :O

Hah the first thing i noticed on the battery is the CE logo. And its the China Export logo wchich is designed to look like CE logo fo equipment that matchec EU standards. Sneaky ;)

2:45.... Holy Crap.... I though my shop was a mess.... :o

Will you please stop making videos for about, say, two months so I can catch up on my binge viewing? I'm only up to EEVBLOG #Two Hundred something.... I've learned so much the last month or so that my brain is getting full I think...

Cripes there is some variability in quality control there! The meter inputs are very poorly soldered, and I suspect the person who did that also dropped the blob of solder into the front end electronics. They need to see your soldering videos, Dave! Maybe the soldering technician was off sick, and the window cleaner had to do the job instead.... chinese factories! Another let down is the awful Chinglish font they use on the display. Not sure where that font came from, but is is horrible and hasn't changed since the 1980's. It would cost next to nothing to fix that, but the archaic character set isn't something the Chinese seem to worry about. On the plus side, the board components and layout are state of the art and mostly very well thought out, with no cost cutting. Like I said, shame about the hand soldering. As for that header with the pin sticking out. It might be a way of ensuring the pins are properly lined up when the boards are pressed together. Some old PC IDE headers were a bit like that, with one of the pins blocked off to prevent misalignment when assembling. Just my theory!

Lets do some repair videos.

Nice oscilloscope... but will it run mario? :D

Eeeek!! never mix analog inputs with switching psu's, it must be very low impedance.