Good presentation. I still use the old school 138, I built it and I'm very proud of it. I told myself I would Up-grade but I haven't found a justification. The little scope does just fine in the Arduino world. Your new guy here has the advantage in form factor. My scope feels cheap even with the stupid acrylic case. This might make me feel better, I was going to get a smaller meter as well. Bench space is tight. Thanks.
Hi Planker, if the 138 is enough, then you don't need anything else. If you need a component tester (capacitators, resistors and so on), you can always go with the DSO-TC2, very nice devide and just a very few buck more than the 138PRO and you'll have an oscilloscope and a component tester on a very nice enclosure, you have the video here ( ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-TXEXZlp8_9U.html ) and the device here ( geni.us/rDqW ). If you don't need one and 138 is enough for you, just stick with it 😁 Thanks for watching! 👍
@@TechCornerTV I assembled the component tester as well. For $30 I have a VOM, Trans tester, and a mini scope. I can fix stuff..I keep looking at the bigger stuff, but honestly a new scope at this time.... I'm not there yet.
I would like to use this thing as my first oscilloscope. But I couldn't find any review on the internet. Then I tried to search for the description in other languages and found your video. You know, this is a very cool review. I did not expect to find something really high-quality filmed. Thank you very much.
Bought this...and love the small form factor. It does not have battery level indicator but you can just check by touching the probe on the positive terminal of the battery plug that is exposed on the sides.
I like it for lower frequencies. It shows music waves quite well as a bonus. I didn't like to be "blind" with my new electronics hobby. When the battery is too low it is acting "faulty."
Hi, thank you for sharing! Really appreciate and my glad you liked. For the price, it is a very nice unit. I think FNIRSI is preparing the release of a more polished version, with a good looking shell and all, let's wait to see how it will be. Thanks for watching!
Hi, sorry for the delay in the answer, time these days is very short. I understand what you're saying, but as I see it, we have several categories of oscilloscopes and for this I will use euros (my local currency), you have the under 35€, this one and a few other options, then ~40€ to 65€ where you'll find devices like the FNIRSI 1C15+, 5012H, Zeeweii DSO1511G, etc, we have another category between ~65€ to 110€ FNIRSI DSO180X, Tooltop ET829, Zeeweii DSO2512G or DSO3D12, then we have between 150€ and 250€ the Owon and Hantek portable oscilloscopes (some with multimeter) and we start to have the desktop oscilloscopes with FNIRSI 1104D being the cheapest and also with less features of the bunch, after you have the Hantek, Owon and a few other brands and then you go all the way to 300€ and up where you start to get different equipments, with different quality. For it's category under 35€, is a very nice device, only surpass by the Zeeweii DSO154. My opinion isn't related with be free or not, every equipment I receive these days, is sent for review free and the condition is that I can say whatever I want about it. I analyze every device according the category is him, apples with apples and oranges with oranges. Thanks for watching.
Excellent review as usual Hugo. This product would be suitable for someone just getting into electronics. Its a pity the bandwidth is not bigger though.
Hey Khuong, thanks for your nice comment. Yeah, you're right, the bandwidth could be better, but for the target audience, I think this will be ok. If you're serious about the need of osciloscope, plus 30€ you can buy from FNRSI the portable 100Mhz version. Thanks for watching! 👍
I watched your videos. The video contents are detailed and very informative. Thanks to you, I ordered the 1014 oscilloscope to start with. Since I like this product, I think I will buy it. Thank you for the valuable information.
Looks like a good budget tool. Small and portable. Maybe a student can put it in his backpack and go. Thank you for sharing this video with us. It feels good to occupy my mind with something besides the terrible tragedy happening right now.
Hey Tron, yeah it's one more to that range of "I just wanna know how this works" oscilloscopes. Works ok and it is really compact, the board also seemed nice. I think it might be useful to a lot of people that don't need more than this. Regarding the rest of your comment, I really avoid to talk things other than electronics, because, everybody has an opinion and sometimes we might get misunderstood, but, I have a lady that comes once a week to my home to cleanup, sometimes with her daughter. They both are Ukrainian and she talks for months about this that happened was gonna happen. She's devasted, has family back home, and I can't imagine what she is going on. Let's hope that everything solves for the best. 🙏 Thanks for watching. 👍
can i messure milliamps from this osiloscope. I'm doing energy efficient some of my circuit projects so i need to messure how much current flow in my circuits
Like always Hugo the best review for the best product.. this scope is super nice for trouble shooting something simple when you're on trip and have to travel light... I'll be waiting for the next review.. stay safe always..
Hi, for sure. This oscilloscope announces 200Khz maximum, 1Khz is just starting to heat up 😁 But for almost the same price you might want to take a look in the DSO152 ( ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-cVHj-6dry8M.html ). Thanks for watching.
Hi, no I don't, sorry. But I went to search and there is a channel called "Locked down electronics" where you can find at least a video about that. Hope that helped. Thanks for watching.
Ótimo reviews Hugo desse osciloscópio com muitas funções com preço muito bom, para que está começando em eletrônica e bem leve dar para levar no bolso, muito bom mesmo.
Hi, it's a cheap and reliable small device. If you can do it up to 200Khz you'll be ok with this one. They will have very soon a 1Mhz DSO153 really soon, no idea of what the price will be. Thanks for watching.
A sine wave may not be the best waveform to test oscilloscope quality, in my opinion. A ramp-up waveform is better for testing the quality of a scope because it requires a sufficient sample rate to measure the entire wave amplitude. Ramp waves have sharp corners, so the scope needs to have a sufficient sample rate otherwise you will get an amplitude drop.
Hi, I love my DSO-150, I find it so pratical with the rotating knob. But in terms of oscilloscope, they're pretty much almost the same, DSO138 PRO has some more functions in the square wave output, like configurable dutty cycle and few other small things, the DSO138 Pro is also a bit faster. You'll be ok with any of them. Thanks for watching!
Hi there, nice video, I just bought one of these units , I is same model number, but does not have a battery like the one you are showing, Is the battery required or can it still be used once connected up ? Cheers
SWD/CLK - Serial Wire Debug. ARM M-series standard programming interface with bidirectional communication. 18:25 "offset is changing" - well you are in AC coupled mode. :D OK i know the ADC on the Winchiphead is different than on STM32 and seems like it might be faster, but where are they getting the divider to get 2.5MHz out of it specifically? Rather than 1, 2 or 4 MHz. This smells a little fishy. The crystal is 8MHz so it's probably running 72MHz standard main clock.
Hey Siana, thanks for the tip, while I was editing the video, I thought that might be something like that, maybe I2C, but thanks to ckearing that out. Regarding of the "fishy" part, well in this small devices is what you get more 😁 thanks for watching. 👍
@@TechCornerTV I mean 1 MHz sampling rate is exactly what I expect given the extreme low cost nature and minimal envelope, I just have a little chip on my shoulder where I'd really like manufacturers to provide actual faithful specs regardless of if it's an educational toy instrument or has higher ambitions, and I'm just not convinced the brand is particularly committed to that. A lot of specs in their higher cost and larger devices also take an almost injury-prone amount of squinting.
Sorry if this has an obvious answer, but what’s the deal with passing in control voltage via a 3.5mm connector? Do you need a 3.5 to BNC adaptor? Cheers
Hi, yes you will, well you can always use the aligator clips, but with a plug it will be much more "secure", there are adapters in aliexpress for that ( www.techcorner.tv/aliexpress ) I bought a few with and without cable. Thanks for watching!
@@TechCornerTV awesome - I need an OSC to visualise control vintage in my modular synth, this looks like a great and cheap option - thanks for the video 🙏🙏🙏✌️
Hi Piotr, This one has battery and DSO150 doesn't, you can hack it to add battery but thats another story. The battery for automotive usage might be very useful. For a few bucks more you can also consider the DSO PRO, it has battery and already supports 5Mhz bandwidth. I have a video on that one also, see it in the channel videos. But between the 2 you mentioned, I prefer the DSO 150, but for automotive usage I think DSO128 PRO might be better, due the battery. In terms of features, they're about the same. Thanks for watching. 👍
I bought the option without a battery. I would like to add a battery now. Any idea what voltage battery is needed? Tried a 3.7V Nokia with no success. Will I need to step up the voltage to 5V with a dc-dc converter?
Hi Paul, is regular 3.7V battery, the writtings on the battery are CL 503045 3,7V 1000mAh 21L. I took a photo, send me a message through the contact e-mail on about page and I will send you the photo. Thanks for watching! 💪
I also bought the model without battery, the components are missing on the pcb (led, diode, chip, etc.). I think it will not work with the battery, I have tried three batteries none works, no hint of recharging ... the led is missing .. try to compare our pcb with that of the video, it is all very evident , here you can see it ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-9pQuUXGhtFM.html
Hi, it measures 200Khz, so it's not much. In terms of voltage with the probe a 1x you can measure up to 40V and with 10x you can measure up to 400V, after that you're on your own! Thanks for watching!
Would be good to see an option for a silicone case. The screen appears to be very high quality. Do you know if the distorted square wave at higher frequencies is as a result of the leads/the device?
Hi, I just bought this but know very little about it. Can it be used to check if an inverter I bought is outputting a pure sine wave at instead of a modified wave form? When I attach it to my house power (120V) it doesnt look like sine wave after hitting the auto button. I think I need to change amplitude but 10V seems to be highest I can go.
Hi, don't forget to change the probe to 10x, otherwise you can damage the oscilloscope. It should work ok to check the inverter. Sometimes, you have to tune up a bit, since auto is not perfect, some times it doesn't work so well. Normally, a amplitude adjustment do the trick. Thanks for watching!
@@TechCornerTV ok thanks for the tip, do I just simply attach each end of 10x grey probe to each outlet hole (sorry not sure of proper term) obviously not the ground one right? Im in Canada so we are 120v power. Then turn it on and press auto? I know I can adjust amplitude by adjusting voltage. I will try it with and without a load correct? Thanks for answering you have a new subscriber
@@mikeoes1 Thanks for the sub! This is really important, you should use the probe on the live, never connect the aligator clip to the live one, otherwise can be very dangerours, but you put the probe in 10x mode and also don't forget to do the same on the oscilloscope. The probe aligator clip should be connected to the common. Please understand that kind of voltage can harm you and damage the equipment.
@@TechCornerTV ok thanks again! Do you know how to put it in 10 x mode? because the manual does not say how and I've tried playing with all the buttons. if I hold down the change button it does not let me toggle from 1X to 10X, its skips over that section at the bottom of the screen. Heres a 1 min video of me trying to test wave output from my house outlet (120v). Is this correct? ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-dYkKOpNyjKs.html
So I just got one of these to measure clipping on my audio amplifiers. I'm having issues in figuring out the correct settings. Could someone run me through how to measure a 40hz signal? I tried using Auto, and it worked, but I cannot get the wavelength view low enough to where I can see when it starts to clip, as I run out of screen.
Hi, 40Hz signal is a very low frequency signal, so you should use a time based not so low, something in miliseconds so you can see what you need. Shouldn't be hard, I think. Thanks for watching!
So I got this. Definitely going to get a lab scope. With this little guy, it's fun. But, it will not mount for firmware update. Two seperate computers, nothing. I even looked to see if I needed to assign a drive letter to the mount. Nope, nothing. But I also can't find firmware, so maybe there isn't any update anyway? Thank you
Hi! Yeah, it's only 200Khz... if you think about it, the arduino as 16Mhz crystal... it's ok to see how everything works and to make you sure that you need to buy a 100Mhz one... hehehe...
@@TechCornerTV lol. Yes, that's basically my plan. If I find myself limited, then that means I can justify a lab scope, but if I don't use it much or am not limited then I won't. Even if I but a real scope, having this portable in my carrying case with my multimeter is still nice. Arduino, I didn't think about that. You can actually view the clock, cool. I'm used to multi gigahert processors. I gotta try that! Thank you!
Hi Mario, I think that you're talking about the source code for the firmware, this is a commercial product and I don't believe that FNIRSI will release that, but this device uses the same code of the DSO138 and you can find some releases on Github, just search for DSO138. Warning, I don't know if those releases will be compatible with the DSO138 PRO hardware, so proceed with caution. Thanks for watching!
i am in a search for my first oscilloscope, Hugo. For a hobbyist, learn-to-fix electronic stuffs like phones, laptops, switching PS and such (non-professional by any means), do you recommend this DSO138 Pro or rather keep the money for a more advance one? maybe like 1C15 model?
Hi Radius, I ordered for review the KKMOON DS0120M, DSO1511G & DSO2512G120M (2 channels), FNIRSI 1C15+ & 5012H to make the review of each of this oscilloscopes and a showdown video after. To be honest and considering for what you will use it, I'll suggest ot invest more $10 to $15 and buy the FNIRSI DSO PRO (you have 5Mhz and 30Mhz versions, be careful what you choose) *OR* spend more $25 and buy something like the 5012H or 1C15+ (that will be my option). The 138 PRO model only has 200Khz bandwidth and very few functions. Well thats my 5 cents on what you asked, thanks for watching! 👍 PS - I have a giveaway running right now to offer a FNIRSI 138 PRO to a channel viewer, view on the videos list how to apply to the giveaway.
@@TechCornerTV big thanks for your prompt reply & valuable advise, Hugo. I did consider FNIRSI DSO Pro but i noticed from your review about it that it has problematic Auto mode, made me to put it out from my option list. Does the 30 Mhz version has that problem too? PS : yes, I do aware of your giveaway and applied for it already. hope the best to win it. ✌🏻😁
Hello, I didn't quite get your questions, but if the voltage of the inverter can be measured with an oscilloscope, probably this one can measure it. Take attention to the voltage limits 1x and 10x. Thanks for watching! 👍
Hi, I believe so, this analyzes electric signals, so if you have an electric signal can be analyzed 😁 you just have to keep it under (vpp) 40V in 1X probe or undet 400V in 10X probe. Thanks for watching!
Hi, it has some improvements, but on most part is almost equal. I have here a DSO138 to assemble and do a comparation video, but didn't have the time yet. Hope I can't do it soon... thanks for watching!
Hi, never done that so I would not know the best settings, but to zoom in, just decrease the vertical and horizontal divisions (voltage and time). Thanks for watching!
Hey Dave, it took me some time to get the name right also... in the first videos I had to spell it... 😁 but it seens thats the way we should say it... thanks for watching! 👍
Hi David, never tested on automotive, but since it is able to analyze electric signals, you should be ok. It can't go over 200Khz of bandwidth, so please keep that in mind. Thanks for watching.
@@TechCornerTV Olá, amigo! Desculpe se eu escrever algo que você não entenda. Sou brasileiro e o português daqui é diferente do seu. Eu comprei um osciloscópio desse modelo. como eu tenho baterias de lítio aqui, optei por comprar a versão sem bateria e instalar uma das baterias que eu tenho. Quando ele chegou, eu desmontei o para colocar a bateria, mas vi que falta esse CI 16 (tp5400) que é responsável por carregar a bateria e também fazer uma fonte de alimentação de cerca de 5volts para alimentar o osciloscópio. É sobre esse circuito que eu preciso saber, pois devo construir esse circuito. Obrigado!
Hi, sorry the late reply, trying to keep up with the comments, not easy. It was fase, I already got it more quiet and use it only on very specific moments. Sorry for that and thanks for watching.
Maybe someone here can help. I need a scope here and there, but I've never bought one. I know the basics, but that's it. I will study though. I don't know why I'd need a better one, but I would buy a "real" beginner scope if I can find the reason. Like 400 dollar scope that people suggest. So currently, I want to find the rise time of some 5volt and 3.3 volt regulators. I need to troubleshoot a chip starting too slowly. Other times I need a scope are arduino or raspberry pi related or some other things. Do I even care about bandwidth? Does it only matter for oscillators? Help, lol. I just basically wish my multimeter could plot change over time. Problem is every time I try to do research, the use cases are examples and I don't know how that'd compare to my somewhat unknown use cases. I do radio sometimes, but I don't expect to be able to analyze gigahertz antenna, so skip that. But what about clock frequency? What about basic electronic troubleshooting? Should I get this or a beginner rygol? I know you can't answer for real, but any advice? Edit: also there's some 50 dollar scope that say 10 or more Megahertz? Hows that possible if this is 80Killohertz? Thank you
Hi, so, first of all you should find out your budget, if you have a budget up to $50 and want this for a hobby, you can use this one or DSO-TC2, they're similiar. (Head's up, there is a new TC3 to be released and I will review soon and has more bw). If your budget goes up $100, you might considet the Zeeweii DSO2515G, has 2 channels, function generator and a few more functions. If you have a budget around $150 you can already consider the benchtop FNIRSI 1014D, it's very rookie friendly, has a nice image and very easy to use. If you budget can go up to $240+/-, benchtop Hantek 2D15 or Owon are good choices. Hope it helped. Thanks for watching!
@@TechCornerTV wow this is great.thank you so much! So this is what I decided. Order that little 33 dollar tiny scope. Then, if I use it a lot and run into limitations, I will go pretty far up to to the full size scope. I've heard some bad things about that hanteck regarding the ui, the stability, and with the teardown. So, I may search your channel for a sigilent, rygol, or something with some solid us support. I'm going to go look for some cool circuits to build! Thank you so much.
Hi Hissan, it is a simple oscilloscope, it works ok, but if you're looking for something more reliabiable save a few more bucks and go for the 1C15 or the 5012H, it's a totally different product and the price isn't so much higher. Thanks for watching! 👍
Olá Mario, o sorteio já fechou. Já enviei os prémios aos vencedores. Mas não desanimes, de tempo a tempo estou a oferecer equipamento. Obrigado por assisitres! 👍
@@TechCornerTV Sim, claro. Eu não conhecia ainda o canal. Eu estava pesquisando sobre o osciloscópio FNIRSI DSO138 PRO. Foi assim que cheguei no seu canal. Gostei muito, parabéns!
Hi, don't know what you're doing when it broke, but join the FNIRSI whatsapp group and tell there what happened and the support team probably will give a help, they're quite supportive. Thanks for watching!
@@TechCornerTV I felt it hard to listen at an high enough level to hear your voice while avoiding the loud FX. Keeping a matching audio level or slightly higher vocals would help. Reduce the intro's audio level in post/export and lowered copy for reuse. Sorry for my reply, I'll aim to be more constructive
@@KavorkaDesigns No worries, as I told you all feedback is welcome, even the not so positive, we need to learn and get better. My latest videos are much in what you suggested. This one has already 2 years, again, really no worries, really appreciate the time you took to give some feedback, it maters.
Dude , he's doing these videos for free and in English . I would rather be grateful for having actual reviews for these chinese ambiguous products rather than bitching like you for a simple volume issue. Shortly said, you complain like a b1tch
