About DSO-TS2: This can and will be an invaluable tool for a high school kid who is just starting a hobby of electronics, like tinkering with an Arduino, building simple fun projects etc. Not everything is made for an EE use Dave, it is easy to say, "who is goanna use a continuity tester on this?" but believe me this can be the pride and joy of a kid who cannot afford decent equipment yet. It may not be for you, but I see a clear market where this will shine as a star!
Dave's right here. As a newb electronics enthusiast I should probably go out and buy a $20,000 desk oscilloscope as my test rig. That'll get his seal of approval for sure
Some of us dont have infinite deskspace real estate. So having a cheap combo of the part tester (in a neat housing) and a rough oscilliscope in one is good.
The first thing I'd do with the "scope" is get adapter cables for the connections. Only have to be 10-15cm long - but that will greatly increase the life expectancy. But I agree - trying to do too much and not doing anything well.
I really wish the people making these Process Calibrators would rediscover the old BlackBerry thumb wheel. It's a PITA to try and check the span on a valve when you're hanging from a steam pipe 20ft up and you have to fumble for a damn button. Even Fluke does this!
Maybe in Australia, USA, Europe Japan, and south Korea doesn't make sense to have one of these stuff but in the rest of the world most of the people who lives from repairs of not advance hardware, can't afford to buy specialized equipment.
even in Europe the SG-003A does make sense ;) if you read a bit the manual. The scope you can get better for almoste the same price so it isn't with good enough specs.
Just point I/R remote control at it and press a button on the remote control. it decodes and shows wave. Most M-testers do that function. For me. it's a really useful feature when 5050 RGB Led string is changed by TV or other remote control.
That scope/tester would definitely be good for someone just starting playing with electronics! Buying a crappy cheapo scope and a decent form-factor transistor tester separately would cost much more.
That's the problem with the pro/rich, they forget what it was like to be a budget hobby guy. I use a DSO138 to do auto EFI work, which is fine because the highest trigger frequency I see is 6KHz max.
The transistor tester can test and give the ratings for a lot of components, it looks like it is pretty adaptable for component identification. It has a little oscilloscope which I think is a bit of fun and has a few uses in testing. I like to design and make vaping mods and this is pretty handy for finding things like resister or coil values which are not always easy to see, specially the little blue resistors with colour bands that are not accurately coloured
I think when the screen asks the user to choose the function (mos test or oscilloscope) the user can enter the IR tester by pointing an IR light at it. Thats what I got from the way you read the instructions anyway.
Nope, tried it, nothing. UPDATE: Didn't work with my sony remotes, but my TV remote worked ok. It shows the bit waveform and hex code. So it's useful. Manual says NEC code only.
You know a reviewer is pre-judging a product when every time he see's something that he dislikes he laughs ("who needs that? haha"), and expect that all the products that should be put out in the market - whether cheap or expensive - should meet his needs.
If it were some pissing toy that didn't have a defined use case and/or had many potential applications, I might agree, but the use case for a process meter (you need to source/sink 4-20mA to zero-span an industrial process instrument) or a transistor tester (you need to determine actual hFE) is extremely niche even by electronics test equipment standards. The only appropriate question is "who needs that?". The actual industry techs are all using $2000+ Flukes and Metrahits, not because they're elitists but because those are the most cost-effective instrument. Nobody who actually needs a process meter can afford to dick around with a $50 aliexpress toy when potential downtime (the filthiest word in manufacturing) hangs in the balance, so who is this thing actually targeted at?
Interesting video. Looks like Fnirsi has some room for improvement when it comes to user interface and focusing on functions people actually want, once they get that done they can probably make some descent low cost equipment.
I looked at the yellow one at Amazon recently and, much like you, I wondered why the heck do I want a transistor tester on my o-scope? The "signal generator" process meter I might still consider getting for my industrial travel kit.
To test ir put in tester function (some need to push start and wait to fail) press a button in a remote control point to the tester and you have a code and a Graf.(don't work in all remote control)
Yep. Dave is clueless of the real world, so it doesn't know about TC1 or DSO138 or DSO150 or that most people don't have a wall of >$1000 single-function test gear.
Did that, nothing happened. UPDATE: Didn't work with my sony remotes, but my TV remote worked ok. It shows the bit waveform and hex code. So it's useful. Manual says NEC code only.
Just my N cents. Dave and many people in comments presume that manufacturer of this gadget had a goal to produce some useful instrument. They didn't. They obviously just have an access to cheap manufacturing capabilities. They didn't do any serious R&D and software development because it's expensive. They took 2 open source projects that have been around for ages, put them into nice plastic box with a nice screen to try to make it look like an actual instrument and sell for little extra. That's all.
Yeah, this is geared towards perhaps entry-level people who don't know too much. I do like the component tester, but I have several. What i like about this one, is the full-color display of the data. For me, color is a big deal. But even at the low price, I don't see this as anything that I'd want, ESPECIALLY with those horrible "connectors' and "adapter". Anyone who buys this and actually uses that adapter, I give it 1 day and it'll either snap the case or at a very minimum, bend the connector on the inside. The could have easily designed it to use real connectors.
You should have taken a look at the SG004A (yellow) seems its the model above this, but its also a lot more expensive, like 120US (incl,VAT) where the blue one is 50.... so more then double. SG004A 0.002% (+0.003) resolution 0.001mA. got some added features and PC and all that jazz.. thermocouple S to N with around 0.2% but whatever high-accuracy is massively overrated and nobody cares :P this is definitely good enough for downunder. I hate these fascinating gadgets from China as my mind just keeps making scenario where they could come handy..(do it do it, purchase it, you definitely need it Jakob) but fair enough. gadgets like these from well known western brands, is often priced at values where it makes very little sense if you don't have a separate need for it, so kudos to CN for delivering all these gadgets, so even plain hobbyists that just like misc. techtoys, can play along)..
This review was nicely timed. Just the other day I was looking at these in AliExpress. Like is typical for many Chinese products these days, they have truly innovative product ideas, but the implementation is a bit half-baked. But for a hobbyist who does not need oscilloscope every day or even every month, a full-sized oscilloscope is a big thing to lug around. These compact form factors are a great idea.
you just push FN and then you can jump to what ever you want by the 7 to 8 other buttons. you dont have to use the menu.. 6:58 so its 2 buttons to change screen interface. "FN and then curve-button". (that toogles you between the different screens).. you can alwasy see if you feature button is active as it will light red.. same goes for the other button.. that will change color depending on which feature your using. same with all these other features.. presets, run programs, auto, and convert etc.. "convert" seems to be some mashup feature where you can take certain signals and convert them into something else..(signal conversion) current into voltage, .or voltage into frequency, or current into frequency etc simply convert signals. there is also a 0.02% unit. (SG04A)
These definitely had potential if they hadn't decided to just throw in all these junky unpolished features. All the injection molded parts and using a nice lcd just to create this
The process calibrator is very useful if needing to do some quick testing of a PLC or fieldbus I/O modules. I have an older one with more dedicated buttons without a graph.
Thinking of getting the 004a for simulating pt100 and pnp pick-up sensors. Can't afford a fluke/keysight and the old resistor box is too big to carry around on jobs. The little frequency generator is even more pita to get it to work
the tester is like 20 bucks alone.. if you want colorscreen and inbuild battery.. so an added +15 to 20 bucks for an added scope.. think its quite reasonable... just get a probe with native MCX.. that IR.. would that show the values on screen?.. like in scope mode? but its easy to critise, at the end of the day... you have a choice and its really not a lot they are asking for these gadget. jump on the SG003A and it was like 46 US with incl. 25% VAT and shipping.with the use a coup... if the seller will ship it.. I don't know... often they cancel it if doesn't make sense.for them economically.
Price "delivered" has an interesting reason. Despite having a human space program, china is considered a developing country and therefore gets shipping subsidies through some trade organizations. Basically our tax money is used to subsidize them copying and undercutting everyone else by making shipping basically free for them (just look how much you yourself would have to pay for international shipping of a package). They wouldn't be nearly as competitive in the ultra-low price sector if they did not have that status. We should ask our politicians to change that so the playing field is a bit more fair again.
I agree with Dave on this one, the UX on these kinda sucks and even though the DSO/TT is well priced right now as it can be had for cheaper than buying both, but ignoring the current sale, for not much more you can get a better separate DSO and TT (by better I mean a better interface) such as the DSO150 and the various versions of the testers with battery holders or rotary encoders.
CPUs in both of those things look like clones of the STM32F103 (different case/memory variations). They should be possible to write better software for them, someone would have to reverse the schematics. Dave, is there any cheap and decent precision current/voltage source available? I tried to search for such thing once, but found only cheap crap and high-end stuff with a price blown into space.
Dave, have you ever played the game Commandos back in the day? You always remind me the sniper Duke in that game. Especially when you say "OK". :) Thanks a lot for all the effort you put here.
According to the manual SG-003A can be controlled under MODBUS Slave mode and at the end of the manual there are tables of MODBUS functions. But, the manual does not describe how to connect the wiring. Does anyone know how to communicate and control this device using MODBUS (RS485) ?
As for that weird transistor osc tester thing, they seem to be all over Ali and such. In general I don't get the oscilloscope part as well. It's not useful for anything at all.
I bought one of this but it did not include de p6100 probe. Bought the probe on ebay but did not include the adapter for the osccilloscope small entrance) Is not available in amazon and only one seller on ebay sells it with the adapter but he does not ship to USA.Can anyone tell me where I can buy the adapter?
Hi Dave perhaps you could add a warning to your video that if you put any volatge through the zif socket you fry the device. I put 9v in pins 1 and 2 of the ziff (can't recall the polarity), any ideas what i may have fried please Dave?
For +$20 to the price of this "scope" it is now possible to buy much batter pocket oscilloscope like dso1511g. At least it has real 10MHz bandwidth (they promised 100, but you know...).
Have you ever put one of these SG-003A on a scope? The one I just bought from Amazon is noisy as hell. Both on CC & CV they are very unstable also - even as measured on the units own v-meter let alone on my fluke and owon DMMs and my scope. I was mostly interested in this device as a low level CCS standard/tool for testing things like phototransistors and as a standard voltage ref for GP use (volts, mv etc that a bench supply would be sloppy at)... but this thing is capricious. As an example, on cv at 3v output (any voltage is same result generally) if you go from a 10k load to 1M, the voltage level changes 100mV! I am not familiar with PLD process meters so perhaps they dont need very tight equipment - but I couldnt IMAGINE this being useful for any sort of testing application. BTW I had it BOTH connected to PC and not connected to PC, with minimal effect (little less noise when not connected - but nothing compared to its general tolerances). I expect a precision v source to have some drop, but not on the level of 100's of mV's for 100's of microamps changes - plus 180mV or so noise SMH.
hmm.. weird. Though I agree with the bad SG 003a manual (though there is a new one) and the menu is initially hard to understand, mine is quite precise! It might pay to try to set it correctly and spend a little time with it before making a video. Easy with the caffeine.
@@vincentwhite7693 Agree. Once you are used to the menu structure and did some basic settings the SG-003a is a breeze to work with and it is actually extremely accurate. It came pre-calibrated.! This review was very ill prepared and showed really nothing that this device can do, like programmable sweeps and modbus interface. Maybe watch a serious instruction video first Clive.
yep, kind a f3cep4lm when Dave started to nag and bltch about cycling thrue curve-screen and how convolute it was, when he already had concluded that the FN is obvious a function button. so its two button pushes.. FN + curve button (supprise) to toggle between screens. all the main features.. program/presets, Auto, signal conversions/convert etc etc.. is with FN and a button.. simply as the button destription says.. and it wil even lid up the button in different colors, sto highlight what feature you have rolling. same with the FN button that wil lid red, to show its active. with the price in mind, its a sexy little gadget and higher standard then I useally see from Fnirsi when it comes to build, that often looks like somethingone step from a DIY frankenstein project ..
If it's anything like the Mr Signal process calibrator then it's crap, it's had periodic noise on the thermocouple outputs that rendered it kind of useless for testing the k-type thermometers.
I bought one of these critters! Actually, I searched for "LCR meter." This popped up. Gee, an LCR meter, with a crummy scope added on. I've got two old analog scopes, 10 & 15MHz, and I AM looking around for a DSO...but a 200 KHz what-cha-ma-call-it?...I don't think so. I'm still figuring out how to use it. The "controls" are anything but intuitive, and the "manual" sucks. But at least I knew I wasn't getting a useful 'scope, so I don't feel cheated.
This guy was Morty from Rick and Morty before Rick and Morty. Maybe, I dunno, calibrate it first since it has a calibration feature. He's all over the place and almost as hard to understand as the chinesium manual.
After watching this video I think Dave doesn't understand what he's saying, he talks a lot but doesn't know what he's doing, even looking at the manual and pressing a few buttons makes a mess? Pro ? clearly this is not the attitude of a professional or he is already at the top and starting to slide.
This is a pretty snotty review. Take off your pro hat and step into the shoes of novices that don't have your insight and experience. The DSO-TC2 is great unit for IDing/testing components on the fly and for introducing someone to scopes. This just like when the budget DMMs were tested just to piss on all of them. I love this channel and have learned a ton but the venom and puppy whining just aren't warranted in this case.
Agreed. I bought one to have in my tech go bag to go/no-go test hall effect speed sensors in Ag products. This was the cheapest battery powered thing I could find that does that and am very happy to have it. I am "pro" Avionics tech and only buy useful tools...
Blame Signal Path.. Its that backland that gives our aussie Dave an "inferiority tech-complex" and why he over and over, feels the need to step on and pfff on chinese budget tech. - "Its CN budget tech-dirt.. I only do it because they sent it to me and want me to ... and I will only glimse at this CN techdirt on my mailbag, and I dont even care if I dont understand 5% of how it works, as I will not put any effort into actually do my own due diligence and examine it a bit so I at least can present it in a transperant honest way to my viewers.. its CN techdirt it will undermine my social media influence tech renomme, if I roll in the dirt with CN budget tech and put anykind of effort into it".- but yeah, its a hard days night when he goes on these nagging rants, when its all down to himself. "its so convoluted to change the curve-screen" 6:58 with this "menu" i have to go to' and so many button presses. when in fact, all he had to do was two button-pushes..- function-button aka "FN & curve button" to toogle from curve-screen. (supprise) all the features, are with the FN button and then the corresponding button that clearly says on it what it does - and the buttons will even lid up in different colors to highlight what mode your in. // anyway, good news both Shahriar from Signal Path and also my main man Ben from Applied Science is on board, and will gladly take a talk with Dave, so we can get that inferiority tech-complex sorted..
Erk - why do all these Chinese things use Times bloody New Roman? I see it on all kinds of otherwise nice-looking kit from Asia. To throw them a bone, I guess if you are a non-English speaking design engineer, you really can't see how awful it looks, much as we can't tell how badly Han lettering might be formed? Then again, my eldest brother was a genius at writing OS-level code but rubbish at interface design, so...
Because that's the Latin alphabet font that's included with the Chinese font that they're using. This sort of thing even predates Unicode; you saw it in Big5-encoded fonts, too. Not totally sure why that's always been the case, but it's probably at least got something to do with the fact that the Chinese font is fixed width, but with a much more square aspect ratio that would be usual for a fixed-width Latin alphabet font, and I bet they used a serif version to help fill up horizontal width. These days, though, it's just "the way it's always been".
China product do have a common: Even expensive instrument is not good out of the box, they should set a FORCE calibration before it goes out of the factory, western world did not expect products that need extra time to hack and fine-tune (except Microsoft Windows) after market. Someone should hack it and make a new interface! The font sucks since it depends on Simplified Chinese.
While this seems to be more of a toy, with PERHAPS some useful functions, I noticed that DHT11 temp sensor (tester??). I was surprised at that, because the DHT11 is an older sensor that would measure, for example, 15C, 20C while the DHT22 is the "better" one would measure, for example, 15.25C, 20.75C. It's amazing that it appears to not support the more accurate version. hmmmm I think this is more for someone who is just a hobbyist who's not deep into electronics. The component tester does seem to be a bit more robust and I do love the COLOR screens. LOL
JYE is not happy everyone stole their DSO designs and have been warning people of counterfeits for ages, so there is little chance they are open in any way. They even introduced an annoying counterfeit warning to their firmware.
Nope. That's only audio frequency and really is a toy, not close to real instrument. Even older FNIRSI for $60, with its lot of bugs and shitty software looks much closer to a real usable instrument. This one is also much better than DSO shell and even has 10mV/div (5x better than $60 Fnirsi older one).
WTF, probe? BNC to some flimsy RF adapter? UUUUUUUGH! Abysmally bad engineering. If only they used SMA, it'd be way better. Oh, and I'm wondering why all the chinesium stuff has the same ugly font, but it's just me, a typography nerd. The "scope" thingy looks like the parts tester on steroids, the menu is very familiar with added scope functionality and they did a good job on how they tackled powering the stuff. LiPo and a USB charger, plain and simple. I like the enclosure, way better than a bare board if you're taking the thing for field repairs. Speaking of which, I've got an oldschool Soviet S1-112A scope/DVOM which is probably bigger than any modern digital scope, and definitely heavier, but it's damn reliable and I like it a lot.
Oh that BNC to (whatever the tiny coax connector on the unit is called) made me cringe! Reminds me of the days when people would buy a 6.35mm to 3.5mm TRS (mic / headphone) plug adaptor to plug a large microphone plug into a tiny handheld device. Only this is somewhat worse as those tiny coax connectors are a magnitude less robust again than the former.
Hey there, nice review! Did you ever test the DS18B20 function of the DSO-TC2? Just received my DSO-TC2 and it shows wrong temperatures. In my case 3.5°C indoors. The same DS18B20 connected to µC shows something about 21°C. So the Sensor is definitely working...
15:37 Jesus, Dave. You're recommending folk buy a "proper tool for the job" which, in fact, is a *very* specific recommendation, on your part, for a product originally developed by someone who was generous enough to give that hard work away freely, to the extent that now you're recommending everyone buy a cheap knockoff from any number of brands, while that original developer gets *nothing* from it, and you can't even be bothered to know that person's name, to at least inspire a *few* folk from your HUGE viewership to maybe look up paying a little extra in thanks to the developer?! And, to top it off, you're asking folk to buy these knockoffs through your link, so *you* can profit from that/those original developers' hard work, while they don't?! BTW: Markus Frejek. There's an awesome video by someone else giving him credit, and also explaining in great detail *how* these work. It's really quite a difficult task, that frankly didn't even seem to have existed a handful of years ago, even from big players like Fluke or HP, yet now are nearly ubiquitous. Amazing how an engineer like you can treat this guy's revolutionary development as almost frivolous.
That video you're referring to might be one by Andreas Spiess. _He has_ such a video, at least, whether or not it's the one you mean :) Andreas' video is years old now, I think, but he republished it a few weeks ago, so it should be easy to find near the top of his videos list 👍 (I'm never sure if it's safe to include links in comments...) That Zener diode inaccuracy towards the end of Dave's video surprised me. I thought these testers were generally decently accurate 🤔 Maybe this one needed calibration? Or did they cheap out on some parts (like using a lower-accuracy TL431/other Vref)? I don't have time to check Dave's high-res photos to see if stuff like that is visible, sadly. I'm also far from an expert on this topic :) (though I have read through a lot of the original documentation and schematics)
@@AndrewGillard Indeed, that's the one. Thank you for that info, here. The video is "#290 How do transistor testers work" I'm frankly pretty amazed these things are as accurate as they seem to be... and zeners' Vr varies dramatically with current. But, yeah, I'm betting the cheap devices use low-tolerance parts. There are so many different types of components, even "regular" diodes with low reverse breakdown voltages, but they wouldn't be called proper zeners, so it really boggles my mind how this tool can figure out the difference between things like those two without potentially damaging one. *Very* low measurement currents, I'm guessing, which would surely affect readings like diode voltages. I always just thought of the tool as a component-identifier, as opposed to a component qualifier. I suppose a configurable second-step test could be useful: "This looks like a zener, around 20V, Do you want to try a higher current to get a more accurate reading?"
Assuming their target market is home hobbyists, the UI fails are an even bigger issue. (Example: It's 2022, and I'm still having to explain people how to connect to Wi-Fi. 😑) A hobbyist just starting out, knowing nothing about these devices, is just as likely to get frustrated, chuck it in a drawer, and turn that into e-waste whenever they next clean out that drawer. Can't fault Fnirsi for trying new things, especially at the price point, but they'd sell a hell of a lot more if they exercised any foresight. BTW, I typed Fnirsi into Google Translate. It came up as "face" in the Yoruba language (which I'd never heard of). Edit: Further Googling shows it's a common language in Nigeria.
26:57 MM32f103RET6, another stm32 clone, never heard of them before, MM32, Mindmotion soc solutions. So we have GD32, STM32 and MM32, they all make F103xxx chips.
At least put the trimmer cap into the probe and make the BNC smaller if you go for such a dodgy solution.. going for a BNC that tries to put active probes to shame in size is a weird call here, even if they were cheap this week in shinzen. Also that transistor tester.. *shudder*. One of these weird impractical box ticking features that will never make sense to me.
Like always, he trashes the hobbyist's and affordable level devices. However, both devices have now been superseded, SG-004 and DSO-TC3 (now with ESR) respectively. There's much less biased reviews here on YT.
Dave so dropped the ball wit the ass umptions about ttester functionality, ir too was right on the nose the whole time. The thing is what it is. Way too far from anything pro. But still has use for a beginner. I wish everyone had a suitable fluke for everything, but... the best i ever did myself were uni-t and rigol
Yeah, the big names (read EXPENSIVE) aren't always necessary. I have several multi-meters, including a Fluke. Of course, I've compared accuracy with all my meters against the Fluke and all of them are bang on (or at least within a tiny margin of difference). In fact, I have some meters that I like a lot better than this Fluke. Needless to say, the Fluke was expensive and in hindsight, I should have saved my money, because it's not THAT MUCH more accurate than others I have. My main Lab meter is in fact a Siglent SDM3045X and I can say, this is my favorite meter of all that I have. However, it's very NOT PORTABLE. LOL
my guess is Chinese people name chinese companies, and likely do it according to their own language and not what it may sound in fx my native tongue danish, or English for that matter. the balls on these chinese people to name their name according to their own language.
The component tester/oscilloscope, the component tester even starts up with a logo "M-Tester". I'll pass on both of them, even tho the price is pretty good. Why a component tester on an oscilloscope?!? Why connectors that are likely to get damaged? Why does the one box have that zif socket arm that sticks out? Why such poor user interfaces? Definitely a lot of room for improvement.
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About DSO-TS2: This can and will be an invaluable tool for a high school kid who is just starting a hobby of electronics, like tinkering with an Arduino, building simple fun projects etc. Not everything is made for an EE use Dave, it is easy to say, "who is goanna use a continuity tester on this?" but believe me this can be the pride and joy of a kid who cannot afford decent equipment yet. It may not be for you, but I see a clear market where this will shine as a star!
Dave's right here. As a newb electronics enthusiast I should probably go out and buy a $20,000 desk oscilloscope as my test rig. That'll get his seal of approval for sure
Some of us dont have infinite deskspace real estate. So having a cheap combo of the part tester (in a neat housing) and a rough oscilliscope in one is good.
The first thing I'd do with the "scope" is get adapter cables for the connections. Only have to be 10-15cm long - but that will greatly increase the life expectancy.
But I agree - trying to do too much and not doing anything well.
I really wish the people making these Process Calibrators would rediscover the old BlackBerry thumb wheel.
It's a PITA to try and check the span on a valve when you're hanging from a steam pipe 20ft up and you have to fumble for a damn button.
Even Fluke does this!
Maybe in Australia, USA, Europe Japan, and south Korea doesn't make sense to have one of these stuff but in the rest of the world most of the people who lives from repairs of not advance hardware, can't afford to buy specialized equipment.
even in Europe the SG-003A does make sense ;) if you read a bit the manual.
The scope you can get better for almoste the same price so it isn't with good enough specs.
Don't complain, before reading the manual.
Just point I/R remote control at it and press a button on the remote control. it decodes and shows wave. Most M-testers do that function. For me. it's a really useful feature when 5050 RGB Led string is changed by TV or other remote control.
That scope/tester would definitely be good for someone just starting playing with electronics! Buying a crappy cheapo scope and a decent form-factor transistor tester separately would cost much more.
That's the problem with the pro/rich, they forget what it was like to be a budget hobby guy.
I use a DSO138 to do auto EFI work, which is fine because the highest trigger frequency I see is 6KHz max.
@@SidneyCritic They don't forget, they just don't care to learn because their only interest has always been to plunder
I wonder is was there ever a product that made dave happy?
Not below $10,000
Cuttent is calculated with Vorage over Refisdnce
I thought the transistor tester on that scope would have been a curve tracer, at least that would have been useful to have.
That would be a cool functionality to have.
As for the signal generator there was a checkbox in the settings to select the voltage range. For 1V you might have to switch to the 0~1V range.
The transistor tester can test and give the ratings for a lot of components, it looks like it is pretty adaptable for component identification. It has a little oscilloscope which I think is a bit of fun and has a few uses in testing. I like to design and make vaping mods and this is pretty handy for finding things like resister or coil values which are not always easy to see, specially the little blue resistors with colour bands that are not accurately coloured
I think when the screen asks the user to choose the function (mos test or oscilloscope) the user can enter the IR tester by pointing an IR light at it. Thats what I got from the way you read the instructions anyway.
Nope, tried it, nothing. UPDATE: Didn't work with my sony remotes, but my TV remote worked ok. It shows the bit waveform and hex code. So it's useful. Manual says NEC code only.
It surprises me that with the current component shortage, these toys are still available for such a low price.
You know a reviewer is pre-judging a product when every time he see's something that he dislikes he laughs ("who needs that? haha"), and expect that all the products that should be put out in the market - whether cheap or expensive - should meet his needs.
If it were some pissing toy that didn't have a defined use case and/or had many potential applications, I might agree, but the use case for a process meter (you need to source/sink 4-20mA to zero-span an industrial process instrument) or a transistor tester (you need to determine actual hFE) is extremely niche even by electronics test equipment standards.
The only appropriate question is "who needs that?". The actual industry techs are all using $2000+ Flukes and Metrahits, not because they're elitists but because those are the most cost-effective instrument. Nobody who actually needs a process meter can afford to dick around with a $50 aliexpress toy when potential downtime (the filthiest word in manufacturing) hangs in the balance, so who is this thing actually targeted at?
Interesting video. Looks like Fnirsi has some room for improvement when it comes to user interface and focusing on functions people actually want, once they get that done they can probably make some descent low cost equipment.
"...Fnirsi has some room for improvement when it comes to user interface..." HAH, HAH, HAH...D,Yah think? :)
I looked at the yellow one at Amazon recently and, much like you, I wondered why the heck do I want a transistor tester on my o-scope? The "signal generator" process meter I might still consider getting for my industrial travel kit.
This is a " TC1 " Metter and a " DSO-150 " Oscilloscope together.
TC1 cost 12 to 23€
DSO-150 cost 20 to 40€
To test ir put in tester function (some need to push start and wait to fail) press a button in a remote control point to the tester and you have a code and a Graf.(don't work in all remote control)
Yep. Dave is clueless of the real world, so it doesn't know about TC1 or DSO138 or DSO150 or that most people don't have a wall of >$1000 single-function test gear.
You read the instructions that said while its waiting to test to point the IR device and press the button........
Did that, nothing happened. UPDATE: Didn't work with my sony remotes, but my TV remote worked ok. It shows the bit waveform and hex code. So it's useful. Manual says NEC code only.
@@EEVblog2 Sony, what do you expect? :D
Thanks for the review! FNIRSI have a new model : FNIRSI DSO-TC3 with an added signal generator. There are a few TH-cam videos on it now
Raised my hopes for something nice with the thumbnail, but crushed my expectations within the first minute most likely? Well done sir! ;)
Please Chinese manufacturers, stop using serif fonts in user interfaces. Especially with low resolution screens.
Just my N cents. Dave and many people in comments presume that manufacturer of this gadget had a goal to produce some useful instrument. They didn't. They obviously just have an access to cheap manufacturing capabilities. They didn't do any serious R&D and software development because it's expensive. They took 2 open source projects that have been around for ages, put them into nice plastic box with a nice screen to try to make it look like an actual instrument and sell for little extra. That's all.
Yeah, this is geared towards perhaps entry-level people who don't know too much.
I do like the component tester, but I have several. What i like about this one, is the full-color display of the data. For me, color is a big deal. But even at the low price, I don't see this as anything that I'd want,
ESPECIALLY with those horrible "connectors' and "adapter". Anyone who buys this and actually uses that adapter, I give it 1 day and it'll either snap the case or at a very minimum, bend the connector on the inside.
The could have easily designed it to use real connectors.
You should have taken a look at the SG004A (yellow) seems its the model above this, but its also a lot more expensive, like 120US (incl,VAT) where the blue one is 50.... so more then double.
SG004A 0.002% (+0.003) resolution 0.001mA.
got some added features and PC and all that jazz.. thermocouple S to N with around 0.2%
but whatever high-accuracy is massively overrated and nobody cares :P this is definitely good enough for downunder.
I hate these fascinating gadgets from China as my mind just keeps making scenario where they could come handy..(do it do it, purchase it, you definitely need it Jakob)
but fair enough. gadgets like these from well known western brands, is often priced at values where it makes very little sense if you don't have a separate need for it, so kudos to CN for delivering all these gadgets, so even plain hobbyists that just like misc. techtoys, can play along)..
This review was nicely timed. Just the other day I was looking at these in AliExpress.
Like is typical for many Chinese products these days, they have truly innovative product ideas, but the implementation is a bit half-baked.
But for a hobbyist who does not need oscilloscope every day or even every month, a full-sized oscilloscope is a big thing to lug around. These compact form factors are a great idea.
you just push FN and then you can jump to what ever you want by the 7 to 8 other buttons.
you dont have to use the menu.. 6:58
so its 2 buttons to change screen interface.
"FN and then curve-button". (that toogles you between the different screens).. you can alwasy see if you feature button is active as it will light red.. same goes for the other button.. that will change color depending on which feature your using.
same with all these other features.. presets, run programs, auto, and convert etc..
"convert" seems to be some mashup feature where you can take certain signals and convert them into something else..(signal conversion)
current into voltage, .or voltage into frequency, or current into frequency etc simply convert signals.
there is also a 0.02% unit. (SG04A)
example
th-cam.com/video/z4-k5WXZnTI/w-d-xo.html
just got my unit yesterday, and Im very impressed for the price.. fascinating little gadget..
@@JAKOB1977 Thanks for sharing that video. It really puts Dave's nonsense to shame.
These definitely had potential if they hadn't decided to just throw in all these junky unpolished features. All the injection molded parts and using a nice lcd just to create this
The process calibrator is very useful if needing to do some quick testing of a PLC or fieldbus I/O modules. I have an older one with more dedicated buttons without a graph.
The deal breaker for me for the TC2 was "The turn-on or turn-off voltage of the FET must be less than 5V" in the manual.
Thinking of getting the 004a for simulating pt100 and pnp pick-up sensors. Can't afford a fluke/keysight and the old resistor box is too big to carry around on jobs. The little frequency generator is even more pita to get it to work
Why didn't you run the calibration function???
Because Dave is clueless and just spams out these kinds of reviews.
Yeah the updated open source T-tester firmware does all those functions and more and you can flash it onto your current tester fairly easily.
I'm waiting for the espresso/cappuccino feature.
the tester is like 20 bucks alone.. if you want colorscreen and inbuild battery.. so an added +15 to 20 bucks for an added scope.. think its quite reasonable... just get a probe with native MCX..
that IR.. would that show the values on screen?.. like in scope mode?
but its easy to critise, at the end of the day... you have a choice and its really not a lot they are asking for these gadget.
jump on the SG003A and it was like 46 US with incl. 25% VAT and shipping.with the use a coup... if the seller will ship it.. I don't know... often they cancel it if doesn't make sense.for them economically.
Price "delivered" has an interesting reason. Despite having a human space program, china is considered a developing country and therefore gets shipping subsidies through some trade organizations. Basically our tax money is used to subsidize them copying and undercutting everyone else by making shipping basically free for them (just look how much you yourself would have to pay for international shipping of a package). They wouldn't be nearly as competitive in the ultra-low price sector if they did not have that status. We should ask our politicians to change that so the playing field is a bit more fair again.
I accidentally put 9v in the 1 & 2 component tester slot, any ideas what i may have fried as it no longer starts?
I agree with Dave on this one, the UX on these kinda sucks and even though the DSO/TT is well priced right now as it can be had for cheaper than buying both, but ignoring the current sale, for not much more you can get a better separate DSO and TT (by better I mean a better interface) such as the DSO150 and the various versions of the testers with battery holders or rotary encoders.
CPUs in both of those things look like clones of the STM32F103 (different case/memory variations). They should be possible to write better software for them, someone would have to reverse the schematics.
Dave, is there any cheap and decent precision current/voltage source available? I tried to search for such thing once, but found only cheap crap and high-end stuff with a price blown into space.
FLELDS that's a new one. Some fancy niche gizmo chinglish type thingy.
Dave, have you ever played the game Commandos back in the day? You always remind me the sniper Duke in that game. Especially when you say "OK". :)
Thanks a lot for all the effort you put here.
Never heard of it.
According to the manual SG-003A can be controlled under MODBUS Slave mode and at the end of the manual there are tables of MODBUS functions. But, the manual does not describe how to connect the wiring. Does anyone know how to communicate and control this device using MODBUS (RS485) ?
Should check if it had firmware updates
The opensource tester can give a “ESR” value, make it a little better if you ask me.
That's exactly what this thing is... the usual software but a proper case. It can show ESR and all the other normal things .
As for that weird transistor osc tester thing, they seem to be all over Ali and such.
In general I don't get the oscilloscope part as well. It's not useful for anything at all.
I bought one of this but it did not include de p6100 probe. Bought the probe on ebay but did not include the adapter for the osccilloscope small entrance) Is not available in amazon and only one seller on ebay sells it with the adapter but he does not ship to USA.Can anyone tell me where I can buy the adapter?
Hi Dave perhaps you could add a warning to your video that if you put any volatge through the zif socket you fry the device. I put 9v in pins 1 and 2 of the ziff (can't recall the polarity), any ideas what i may have fried please Dave?
I work for NASA and use this brilliant instrument for all component testing!
For +$20 to the price of this "scope" it is now possible to buy much batter pocket oscilloscope like dso1511g. At least it has real 10MHz bandwidth (they promised 100, but you know...).
Can I use it to find data and clock signal of mobile phone cpu?
Have you ever put one of these SG-003A on a scope? The one I just bought from Amazon is noisy as hell. Both on CC & CV they are very unstable also - even as measured on the units own v-meter let alone on my fluke and owon DMMs and my scope. I was mostly interested in this device as a low level CCS standard/tool for testing things like phototransistors and as a standard voltage ref for GP use (volts, mv etc that a bench supply would be sloppy at)... but this thing is capricious.
As an example, on cv at 3v output (any voltage is same result generally) if you go from a 10k load to 1M, the voltage level changes 100mV!
I am not familiar with PLD process meters so perhaps they dont need very tight equipment - but I couldnt IMAGINE this being useful for any sort of testing application.
BTW I had it BOTH connected to PC and not connected to PC, with minimal effect (little less noise when not connected - but nothing compared to its general tolerances).
I expect a precision v source to have some drop, but not on the level of 100's of mV's for 100's of microamps changes - plus 180mV or so noise SMH.
hmm.. weird. Though I agree with the bad SG 003a manual (though there is a new one) and the menu is initially hard to understand, mine is quite precise! It might pay to try to set it correctly and spend a little time with it before making a video. Easy with the caffeine.
Yes, he has his head up his arse sometimes...This vid was a waste of time. Totally half baked.
@@vincentwhite7693 Agree. Once you are used to the menu structure and did some basic settings the SG-003a is a breeze to work with and it is actually extremely accurate. It came pre-calibrated.! This review was very ill prepared and showed really nothing that this device can do, like programmable sweeps and modbus interface. Maybe watch a serious instruction video first Clive.
yep, kind a f3cep4lm when Dave started to nag and bltch about cycling thrue curve-screen and how convolute it was, when he already had concluded that the FN is obvious a function button.
so its two button pushes.. FN + curve button (supprise) to toggle between screens.
all the main features.. program/presets, Auto, signal conversions/convert etc etc.. is with FN and a button.. simply as the button destription says.. and it wil even lid up the button in different colors, sto highlight what feature you have rolling.
same with the FN button that wil lid red, to show its active.
with the price in mind, its a sexy little gadget and higher standard then I useally see from Fnirsi when it comes to build, that often looks like somethingone step from a DIY frankenstein project ..
OMG! Bought the scope without probe! Big mistake! But what use is the process meter?
I like the Peak brand ones from the UK.
Yep, they are great and easy to use!
There is a near identical colour LCD transistor tester without oscilloscope for $ 16.
How much would you pay for such an oscilloscope 20 years ago?
If it's anything like the Mr Signal process calibrator then it's crap, it's had periodic noise on the thermocouple outputs that rendered it kind of useless for testing the k-type thermometers.
I bought one of these critters! Actually, I searched for "LCR meter." This popped up. Gee, an LCR meter, with a crummy scope added on. I've got two old analog scopes, 10 & 15MHz, and I AM looking around for a DSO...but a 200 KHz what-cha-ma-call-it?...I don't think so. I'm still figuring out how to use it. The "controls" are anything but intuitive, and the "manual" sucks. But at least I knew I wasn't getting a useful 'scope, so I don't feel cheated.
Engineers don't always code the best UI.
0.1% + 0.005. that 1.1mA is in spec
This guy was Morty from Rick and Morty before Rick and Morty. Maybe, I dunno, calibrate it first since it has a calibration feature. He's all over the place and almost as hard to understand as the chinesium manual.
After watching this video I think Dave doesn't understand what he's saying, he talks a lot but doesn't know what he's doing, even looking at the manual and pressing a few buttons makes a mess? Pro ? clearly this is not the attitude of a professional or he is already at the top and starting to slide.
This is an extract from a mailbag video where I literally take it out of the box and play with it. That's the entire point.
That marking on MCU inside the process meter seems to be STM32F103 clone or what?
yes
This is a pretty snotty review. Take off your pro hat and step into the shoes of novices that don't have your insight and experience. The DSO-TC2 is great unit for IDing/testing components on the fly and for introducing someone to scopes. This just like when the budget DMMs were tested just to piss on all of them. I love this channel and have learned a ton but the venom and puppy whining just aren't warranted in this case.
Agreed. I bought one to have in my tech go bag to go/no-go test hall effect speed sensors in Ag products. This was the cheapest battery powered thing I could find that does that and am very happy to have it. I am "pro" Avionics tech and only buy useful tools...
Blame Signal Path..
Its that backland that gives our aussie Dave an "inferiority tech-complex" and why he over and over, feels the need to step on and pfff on chinese budget tech.
- "Its CN budget tech-dirt.. I only do it because they sent it to me and want me to ... and I will only glimse at this CN techdirt on my mailbag, and I dont even care if I dont understand 5% of how it works, as I will not put any effort into actually do my own due diligence and examine it a bit so I at least can present it in a transperant honest way to my viewers..
its CN techdirt it will undermine my social media influence tech renomme, if I roll in the dirt with CN budget tech and put anykind of effort into it".-
but yeah, its a hard days night when he goes on these nagging rants, when its all down to himself.
"its so convoluted to change the curve-screen" 6:58 with this "menu" i have to go to' and so many button presses.
when in fact, all he had to do was two button-pushes..- function-button aka "FN & curve button" to toogle from curve-screen. (supprise)
all the features, are with the FN button and then the corresponding button that clearly says on it what it does - and the buttons will even lid up in different colors to highlight what mode your in.
//
anyway, good news both Shahriar from Signal Path and also my main man Ben from Applied Science is on board, and will gladly take a talk with Dave, so we can get that inferiority tech-complex sorted..
@@JAKOB1977 - That explains so much. Thanks a ton for the perspective and info. I see clearer now.
Erk - why do all these Chinese things use Times bloody New Roman? I see it on all kinds of otherwise nice-looking kit from Asia. To throw them a bone, I guess if you are a non-English speaking design engineer, you really can't see how awful it looks, much as we can't tell how badly Han lettering might be formed? Then again, my eldest brother was a genius at writing OS-level code but rubbish at interface design, so...
LOL, I have no idea why everyone use the same shitty fonts, but you can immedaitely tell a CE product from that :D
Because that's the Latin alphabet font that's included with the Chinese font that they're using. This sort of thing even predates Unicode; you saw it in Big5-encoded fonts, too. Not totally sure why that's always been the case, but it's probably at least got something to do with the fact that the Chinese font is fixed width, but with a much more square aspect ratio that would be usual for a fixed-width Latin alphabet font, and I bet they used a serif version to help fill up horizontal width. These days, though, it's just "the way it's always been".
It reads ir codes from remote controllers.
China product do have a common: Even expensive instrument is not good out of the box, they should set a FORCE calibration before it goes out of the factory, western world did not expect products that need extra time to hack and fine-tune (except Microsoft Windows) after market. Someone should hack it and make a new interface! The font sucks since it depends on Simplified Chinese.
Keysight multimeter $4000.
Should have Used Normal Scope Jacks...
Dude ! Ever heard of "probe compensation" ?
While this seems to be more of a toy, with PERHAPS some useful functions, I noticed that
DHT11
temp sensor (tester??).
I was surprised at that, because the DHT11 is an older sensor that would measure, for example,
15C, 20C while the DHT22 is the "better" one would measure, for example, 15.25C, 20.75C.
It's amazing that it appears to not support the more accurate version. hmmmm
I think this is more for someone who is just a hobbyist who's not deep into electronics.
The component tester does seem to be a bit more robust and I do love the COLOR screens. LOL
SG-003A: "Cuttent"...dear oh dear!.....and it's so hard to use.....and it's innaccurate! Yup, you'd never use it, chuck it in the bin.
Anyone know what type of coax those are on the scope?
MCX
Thanks. Oh your me.
Hi me!
If you only had $50 the DSO Shell is probably better value and its open source. Obviously it's limited in features but it's $50 or less bucks.
JYE is not happy everyone stole their DSO designs and have been warning people of counterfeits for ages, so there is little chance they are open in any way. They even introduced an annoying counterfeit warning to their firmware.
@@SidneyCritic Check G1t Hu8
Nope. That's only audio frequency and really is a toy, not close to real instrument. Even older FNIRSI for $60, with its lot of bugs and shitty software looks much closer to a real usable instrument. This one is also much better than DSO shell and even has 10mV/div (5x better than $60 Fnirsi older one).
@@AndrewD-IT True but a $50 budget implies specific type of user; one who does not require more than simple signal tracing at 5v.
WTF, probe? BNC to some flimsy RF adapter? UUUUUUUGH! Abysmally bad engineering. If only they used SMA, it'd be way better.
Oh, and I'm wondering why all the chinesium stuff has the same ugly font, but it's just me, a typography nerd.
The "scope" thingy looks like the parts tester on steroids, the menu is very familiar with added scope functionality and they did a good job on how they tackled powering the stuff. LiPo and a USB charger, plain and simple. I like the enclosure, way better than a bare board if you're taking the thing for field repairs. Speaking of which, I've got an oldschool Soviet S1-112A scope/DVOM which is probably bigger than any modern digital scope, and definitely heavier, but it's damn reliable and I like it a lot.
Oh that BNC to (whatever the tiny coax connector on the unit is called) made me cringe! Reminds me of the days when people would buy a 6.35mm to 3.5mm TRS (mic / headphone) plug adaptor to plug a large microphone plug into a tiny handheld device. Only this is somewhat worse as those tiny coax connectors are a magnitude less robust again than the former.
Hey there, nice review! Did you ever test the DS18B20 function of the DSO-TC2? Just received my DSO-TC2 and it shows wrong temperatures. In my case 3.5°C indoors. The same DS18B20 connected to µC shows something about 21°C. So the Sensor is definitely working...
15:37 Jesus, Dave. You're recommending folk buy a "proper tool for the job" which, in fact, is a *very* specific recommendation, on your part, for a product originally developed by someone who was generous enough to give that hard work away freely, to the extent that now you're recommending everyone buy a cheap knockoff from any number of brands, while that original developer gets *nothing* from it, and you can't even be bothered to know that person's name, to at least inspire a *few* folk from your HUGE viewership to maybe look up paying a little extra in thanks to the developer?!
And, to top it off, you're asking folk to buy these knockoffs through your link, so *you* can profit from that/those original developers' hard work, while they don't?!
BTW: Markus Frejek. There's an awesome video by someone else giving him credit, and also explaining in great detail *how* these work. It's really quite a difficult task, that frankly didn't even seem to have existed a handful of years ago, even from big players like Fluke or HP, yet now are nearly ubiquitous. Amazing how an engineer like you can treat this guy's revolutionary development as almost frivolous.
That video you're referring to might be one by Andreas Spiess. _He has_ such a video, at least, whether or not it's the one you mean :)
Andreas' video is years old now, I think, but he republished it a few weeks ago, so it should be easy to find near the top of his videos list 👍
(I'm never sure if it's safe to include links in comments...)
That Zener diode inaccuracy towards the end of Dave's video surprised me. I thought these testers were generally decently accurate 🤔
Maybe this one needed calibration? Or did they cheap out on some parts (like using a lower-accuracy TL431/other Vref)?
I don't have time to check Dave's high-res photos to see if stuff like that is visible, sadly. I'm also far from an expert on this topic :) (though I have read through a lot of the original documentation and schematics)
@@AndrewGillard Indeed, that's the one.
Thank you for that info, here. The video is "#290 How do transistor testers work"
I'm frankly pretty amazed these things are as accurate as they seem to be... and zeners' Vr varies dramatically with current. But, yeah, I'm betting the cheap devices use low-tolerance parts.
There are so many different types of components, even "regular" diodes with low reverse breakdown voltages, but they wouldn't be called proper zeners, so it really boggles my mind how this tool can figure out the difference between things like those two without potentially damaging one. *Very* low measurement currents, I'm guessing, which would surely affect readings like diode voltages. I always just thought of the tool as a component-identifier, as opposed to a component qualifier. I suppose a configurable second-step test could be useful: "This looks like a zener, around 20V, Do you want to try a higher current to get a more accurate reading?"
chill out
@@jaro6985 Yes Massa
Its £34 at the moment for the tester might grab me one !....cheers.
Assuming their target market is home hobbyists, the UI fails are an even bigger issue. (Example: It's 2022, and I'm still having to explain people how to connect to Wi-Fi. 😑) A hobbyist just starting out, knowing nothing about these devices, is just as likely to get frustrated, chuck it in a drawer, and turn that into e-waste whenever they next clean out that drawer. Can't fault Fnirsi for trying new things, especially at the price point, but they'd sell a hell of a lot more if they exercised any foresight. BTW, I typed Fnirsi into Google Translate. It came up as "face" in the Yoruba language (which I'd never heard of). Edit: Further Googling shows it's a common language in Nigeria.
The fact that they don't have replaceable batteries is a deal breaker for me. Fail to charge 'em once and they're bricks.
26:57 MM32f103RET6, another stm32 clone, never heard of them before, MM32, Mindmotion soc solutions. So we have GD32, STM32 and MM32, they all make F103xxx chips.
Same font as always. I think China only gets 1 font.
ROFL yeah, they're having a difficult time HACKING better fonts. hehehehehe
At least put the trimmer cap into the probe and make the BNC smaller if you go for such a dodgy solution.. going for a BNC that tries to put active probes to shame in size is a weird call here, even if they were cheap this week in shinzen. Also that transistor tester.. *shudder*. One of these weird impractical box ticking features that will never make sense to me.
It looks like there target market for the scope is a tech on the go
Like always, he trashes the hobbyist's and affordable level devices. However, both devices have now been superseded, SG-004 and DSO-TC3 (now with ESR) respectively. There's much less biased reviews here on YT.
I HATE stuff with crap loads of sub-menus
Dave so dropped the ball wit the ass umptions about ttester functionality, ir too was right on the nose the whole time.
The thing is what it is. Way too far from anything pro. But still has use for a beginner.
I wish everyone had a suitable fluke for everything, but... the best i ever did myself were uni-t and rigol
Yeah, the big names (read EXPENSIVE) aren't always necessary.
I have several multi-meters, including a Fluke.
Of course, I've compared accuracy with all my meters against the Fluke and all of them are bang on (or at least within a tiny margin of difference).
In fact, I have some meters that I like a lot better than this Fluke.
Needless to say, the Fluke was expensive and in hindsight, I should have saved my money, because it's not THAT MUCH more accurate than others I have.
My main Lab meter is in fact a Siglent SDM3045X and I can say, this is my favorite meter of all that I have. However, it's very NOT PORTABLE. LOL
I've never had anything from them that wasn't backwards. That was 2 devices haha
woohoo, seems like i'm the first person to find this video
I do not know how you did it but you are FIRST!!!
Definitely write home to your mum about it.
@@RoderikvanReekum Wrong, not FIRST: it is FNIRST :P
Maybe you should have read the instructions or at least instructions on how to make an interesting video.
The brand fnrsi sounds like what you hear when someone sneezes
Who choose those names c'mon
my guess is Chinese people name chinese companies, and likely do it according to their own language and not what it may sound in fx my native tongue danish, or English for that matter.
the balls on these chinese people to name their name according to their own language.
the worst video I've ever saw about any kind of tool
You should maybe first read rhe user manual! Annoying and appalling
The component tester/oscilloscope, the component tester even starts up with a logo "M-Tester". I'll pass on both of them, even tho the price is pretty good. Why a component tester on an oscilloscope?!? Why connectors that are likely to get damaged? Why does the one box have that zif socket arm that sticks out? Why such poor user interfaces? Definitely a lot of room for improvement.
Surely it's not REALLY so difficult to work out? It's a simple scope added onto a Transistor Tester, not the other way around.
seems waste of nature resources
это что за дикие вопли😂😂😂
First;. oh wait.. SECOND !
Junk.......save up and buy real tools
You are moving too fast with the review.
Okay:
You are moving too fast with the mailbag first look.
What do you mean? And it's not a review, it's a mailbag first look.