seeed studio DSO Nano oscilloscope V2

It's a real entertaining and cute device. An awesome idea, and at this price, a great thing to have around a household. The automatic functions, in particular frequency measurement are very nice.However after you try to use it for anything practical, you quickly find that an oscilloscope really needs to have two input channels because usually you need to see not just a shape of a signal but the dependency between two signals. I'd much rather have the signal generator exit dropped and the second input installed instead. It would have been better to spend a few bucks more for a dual-channel device, but as people have pointed out, I was mistaken and there aren't any cheap dual-channel scopes. The cheapest ones start at $350-400, and these are some serious scopes.There are other nitpicks too: The interface is far from intuitive. The side buttons (A and B) click before they actually make contact and make this weird impression that "I've pressed the button but nothing happened". Turns out, they need to be pressed harder, to the point after they click. The signal generator exit didn't work on mine out of the box. I've opened the case (with the included screwdriver!), didn't see any obvious solderings missing, closed the case back, and then the generator worked. I don't know, what was the problem. The sampling frequency is also on the low side. 1 MHz from the spec is not the maximum input signal frequency, it's the sampling rate. The maximum frequency at which the signal looks reasonable is about 50 KHz. Good enough for using on a car but forget about using it on any digital electronics. The mini-USB charging cable is not included but it's easy to get, and the battery comes fully charged and ready to use right away.P.S. Found what was wrong with the signal generator: nothing wrong as such but the polarity matters. When you connect the signal output to the input in one polarity, it works. In the opposite polarity it shows nothing. Probably the output is not correctly electrically decoupled. The leads are unmarked and look the same, so it gets down to luck. After I've figured this out, I've marked the leads on mine.

I just love this little scope.It does all that its specd to do very conveniently.Light weight and uber portable.Ive already trouble shot some AC line stuff thatmandates an isolated ground scope.Perfect for this kind of usage.(Note that the case is connected to scope gnd.Be ware of what it might touch)It has one assembly boo boo thatbotches the frequency response on the 20 - 100mV ranges.C2, a 100p cap on the bottom of the input divider, needs to be removed.Seeed Studio, please take note.Also, reflash the unit with the BenF upgrade firm ware.Works much better than the original.After these, the unit is perfect!Great for the hobbyist.I highly recommend it!Another guy at work saw mine,immediately got psyched, and ordered one.He s chomping at the bit waiting for its arrival!

It indeed looks really cute, but its usefulness is very limited.First the screen is really small. The visible area is 5.8x4.3cm, i.e. roughly 2x1.5". While indeed compact, it is very hard to see anything on such small screen.As other reviewers mentioned already, the claimed 1MHz is a joke. The screen alone seem to be unable to refresh fast enough, and signals over 50KHz are hard to see.The UI is not the very intuitive, and takes time to get used to.I did not test the signal generator, so can't say anything about it.As a conclusion, it may be a good device for someone dealing with audio frequencies, but not for the digital stuff.

For those wanting see waveforms, this is a great product. The portability is a plus, and the screen resolution is a bit more than decent. While I do not need the signal generator, there are many projects for which this would be great. For functionality, I give this product a four star rating. It's always easier to discuss shortcomings: 1. Documentation is there, but you have to find it on their website. 2. The microSD/image-saving process is either wrong, or incorrectly documented. 3. Single input.I would purchase this product again. If you need to be able to use the data in a program, you're screwed. If you need an image of the waveform, you will need a camera to take a shot of the screen. If you want to compare two signals, you will have to compare the pictures you just took with the camera.Overall, it's a great little product, and my issues would not be there without first having a product like this.

Pretty neat to have a small portable scope. Really inexpensive in the world of scopes. Good for audio stuff.I will say navigating around with the buttons is quirky and awkward, especially if you haven't done it in a while. For instance, setting the trigger threshold or precisely measuring waveforms can turn into a button mashing project. Still, it would probably need a touch screen or dial encoders or something to be more ergonomic and user friendly, and thus be more expensive.Also, just one channel can be fairly limiting. But then again, it is uniquely very cheap, and very portable.