Looking at the assembly instruction sheet, during calibration, they ask you to tweak your waveform to look like the middle image. The top and bottom images are examples of 'not enough' and 'too much'. The middle image with a correctly displayed square wave is the objective.
These little scopes are useful, but most consider them to be toys. I have two different scopes that I built and both have a color screen, which is nice. They all have some noise on them. More expensive scopes like my bench unit have a filter that gets rid of it. I have tried many times to clear up the noise on my little scopes, but never figured it out. Maybe a cap put some where in the signal path would fix it. My scopes are rated at 200khz, this one looks about the same. It would be nice if they were 20mghz, but my bench scope is 200 so I have it covered, but these small scopes are so convenient. You can pack them any where, that is why I like them. Nice build and you satisfied my curiosity of this scope. I was going to build one and maybe I still will build one. I enjoy these kits.
At around 24:00 you talk about the USB-UART board being only useful for firmware upgrades... but JYE makes a piece of software "JYELab" which allows you to use the DSO068 as a USB scope on a PC. You can also use that same functionality with your own software to capture data from the scope... You can also export a screen capture and other info from the scope via USB.
There are some good bits about this scope (the case & the controls and the free probe) but, all in all, having done a fair amount of testing of a JYE Tech DSO 138, which I had to built my own enclosure for and use my own probe, I believe that I get more accurate results and a cleaner display on the DSO138. Given that my DSO138 cost just £10 (about 13 dollars?) I personally think, from what I can see, that I prefer the 138. Thanks for these videos and tests.
That is true, the DSO138 is a fine kit too and I also prefer the color-display. Even better is the DSO150-kit (DSO Shell) with its rotary encoder and switches for setting the scope-parameters. A really nice step up in terms of bandwidth and features is this one => goo.gl/KPFq7S - the DS212 from Miniscope. 1MHz bandwidth, 2 channels, lithium-battery powered, function generator, but the real deal: it's open source and a ton of new features can be expected from the community (as with the predecessors). The DSO138/150 will always have a place on my bench for cap-testing and general, low-frequency stuff. With the MiniDSO DS212 I can even go after SMPS-noise testing thanks to the higher bandwidth and the 2 channels open the possibility to do "cheapskate's differential" measurements as described on EEVBlog.
They are made by the same Chinese company. They just have different functions (like a full USB data logging interface, higher sampling rate, better case and internal Lithium battery charger in this one). Pick the one that does what you want.(They dont ship batteries because it costs to much). Have a look at thier web site, they suggest using a cell phone battery.
You missed that you can use the scope as a data logger through the USB port. The software is on the web site. (It also has another 7 analog inputs available over USB from an unpopulated socket on the board). The two channel version looks interesting too for some applications like vibration monitoring.
Nice toy and versatile as well, apparently. I would like a larger screen. If you got all those fancy features and info on the display, which is nice, visibility (and resolution) is an issue. I guess that would make it a little more expensive, but it would be worth it.
I think you mis-adjusted C5. I don't read the instructions the same way you do. The top picture is labeled "Not enough", the middle is "Good" and the bottom is "Too much". The instruction says "Change C5 to obtain waveform as the middle of photos left." which to me means the nice square picture, not the one with a bit of overshoot.
Thanks Tony for a very thorough explanation of the Banggood DSO 068 oscilloscope kit. I'm a beginner at electronics but willing to learn. I like the idea of building the 6BQ5 amplifier kit by following your sequence of videos, then I saw this oscilloscope video and, as you say, it makes a good first project for a beginner. My question is will the scope be useful when building the amplifier kit?
This is an older video and some of the newer kits have gotten better over the last few years. Although you could use this for some really basic audio testing, you would be better off with a proper oscilloscope. You could find a basic used 20MHz or even 50 MHz scope on eBay for cheap. For a little more, you could get into a modern digital scope that would be a lot more useful for servicing audio gear. I had a Leader LBO 505 that I used for years. The Leader LBO 505, or the nicer LBO 514 or LBO 515 can be had for under $100, if you watch on eBay. Another good one is the Tektronix 2213 or 2215. For around $250, you can get a new Siglent, Hantek, Owon or Rigol digital scope, all of which would work great for you. Hope that helps.
@@xraytonyb Hi Tony, Thanks for all the info on oscilloscopes, I’ll know what to look out for now. One thing I’m still not clear about is whether I would need one to successfully build the 6BQ5 amplifier kit, what is your view on that? Best wishes Simon
Question, Is this suitable to use if all you really work on are amps and preamps? I built several very cool electronic kits growing up and I'm thinking about getting back into the hobby now that I'm retired. However, the friend who is encouraging me to get back into the hobby is a musician who focuses mainly on restoring old amps and preamps. He's been wanting an oscilloscope and learning how to use one, but he's already very cramped for space. With these limitations, will something like this be very useful? I just wanted to check before getting his hopes up about this particular model. Both videos on this build are great by the way.
You might verify that 3.3K 1% that you had to substitute is good. It's hard for me to verify the colors in Part 1. That resistor sets the gain of the vertical amplifier, so it's critical for accuracy.
I tested it with a meter and it was correct. These newer resistors with the blue body and tiny stripes are terrible to read! That said, I should look into that and see if I can get the vertical to be more accurate by adjusting the value. Thanks for the tip!
At 0:58 you say 300MHz. Did you mean 300kHz? Ahh, yes... kept watching. For anyone interested, the User manual states: "When timebase is set to 2us or faster, capture will automatically use Equivalent-Time Sampling method" So, 5us setting would be the fastest native timebase setting for this scope. 5us per division. A 200Khz signal is 5us, but that would be a full wave in one division right? And I'm guessing it doesn't sample fast enough to get multiple samples per division. If it's one sample per division that would mean at least 10us to get 2 samples, 15us for 3 samples and so on. If we want 4 samples, for example, that'd be a 20us time which would give us 4 samples for a 50kHz signal, which MAY be enough. Am I getting this right?
Thanks, Tony, I need to "acquire" a few pieces of gear for my test bench, this little scope looks like a lot of bang for the buck, I would be interested in similar inexpensive projects like this. Looking around the Banggood site I found this "Original JYE Tech DIY FG085 DDS Digital Synthesis Function Generator Kit With Panel" . What do you think ?
Very thorough presentation and explanation of the circuit, well done! Having said that: I threw something your way on PayPal so you can buy some lozenges for your throat :D Jokes aside: I hear that coughing on your vids for some months now; consulted a doc yet and checked for allergies or slight asthma? However, get well soon and thanks for your videos!
@@MrTopsoil911 You're a moron. Stick to uploading videos of yourself eating chips. This a comment section, not a place for you to reveal your personal issues.
Looking at the assembly instruction sheet, during calibration, they ask you to tweak your waveform to look like the middle image. The top and bottom images are examples of 'not enough' and 'too much'. The middle image with a correctly displayed square wave is the objective.
These little scopes are useful, but most consider them to be toys. I have two different scopes that I built and both have a color screen, which is nice. They all have some noise on them. More expensive scopes like my bench unit have a filter that gets rid of it. I have tried many times to clear up the noise on my little scopes, but never figured it out. Maybe a cap put some where in the signal path would fix it. My scopes are rated at 200khz, this one looks about the same. It would be nice if they were 20mghz, but my bench scope is 200 so I have it covered, but these small scopes are so convenient. You can pack them any where, that is why I like them. Nice build and you satisfied my curiosity of this scope. I was going to build one and maybe I still will build one. I enjoy these kits.
Love the video Tony! Great work as always! Keep up the wonderful work you do for all of us electronic illiterates. Take care!
At around 24:00 you talk about the USB-UART board being only useful for firmware upgrades... but JYE makes a piece of software "JYELab" which allows you to use the DSO068 as a USB scope on a PC. You can also use that same functionality with your own software to capture data from the scope... You can also export a screen capture and other info from the scope via USB.
There are some good bits about this scope (the case & the controls and the free probe) but, all in all, having done a fair amount of testing of a JYE Tech DSO 138, which I had to built my own enclosure for and use my own probe, I believe that I get more accurate results and a cleaner display on the DSO138. Given that my DSO138 cost just £10 (about 13 dollars?) I personally think, from what I can see, that I prefer the 138. Thanks for these videos and tests.
That is true, the DSO138 is a fine kit too and I also prefer the color-display. Even better is the DSO150-kit (DSO Shell) with its rotary encoder and switches for setting the scope-parameters. A really nice step up in terms of bandwidth and features is this one => goo.gl/KPFq7S - the DS212 from Miniscope. 1MHz bandwidth, 2 channels, lithium-battery powered, function generator, but the real deal: it's open source and a ton of new features can be expected from the community (as with the predecessors). The DSO138/150 will always have a place on my bench for cap-testing and general, low-frequency stuff. With the MiniDSO DS212 I can even go after SMPS-noise testing thanks to the higher bandwidth and the 2 channels open the possibility to do "cheapskate's differential" measurements as described on EEVBlog.
The DS212 is nicer than DSO138 but 13$ vs 100$.
They are made by the same Chinese company. They just have different functions (like a full USB data logging interface, higher sampling rate, better case and internal Lithium battery charger in this one). Pick the one that does what you want.(They dont ship batteries because it costs to much). Have a look at thier web site, they suggest using a cell phone battery.
I watched part 1 about 5 times last night because I kept falling asleep been waiting all day for this part 2. Thank you so much for the vids!
You missed that you can use the scope as a data logger through the USB port. The software is on the web site. (It also has another 7 analog inputs available over USB from an unpopulated socket on the board). The two channel version looks interesting too for some applications like vibration monitoring.
Nice toy and versatile as well, apparently. I would like a larger screen. If you got all those fancy features and info on the display, which is nice, visibility (and resolution) is an issue. I guess that would make it a little more expensive, but it would be worth it.
Very impressive. Great for newcomers. Handy item well presented Ty.
I think you mis-adjusted C5. I don't read the instructions the same way you do. The top picture is labeled "Not enough", the middle is "Good" and the bottom is "Too much". The instruction says "Change C5 to obtain waveform as the middle of photos left." which to me means the nice square picture, not the one with a bit of overshoot.
You're right. I caught that and readjusted it off camera. Thanks for bringing that up, as forgot to mention it!
Hi Tony, another nice video, thanks. at 0:59 you say 300MHz, I assume it is 300kHz? Peter
You're right. I actually said it a second time later on, but put a correction note on the screen. Thanks for pointing it out.
No problem, thanks again
Thanks Tony for a very thorough explanation of the Banggood DSO 068 oscilloscope kit. I'm a beginner at electronics but willing to learn. I like the idea of building the 6BQ5 amplifier kit by following your sequence of videos, then I saw this oscilloscope video and, as you say, it makes a good first project for a beginner. My question is will the scope be useful when building the amplifier kit?
This is an older video and some of the newer kits have gotten better over the last few years. Although you could use this for some really basic audio testing, you would be better off with a proper oscilloscope. You could find a basic used 20MHz or even 50 MHz scope on eBay for cheap. For a little more, you could get into a modern digital scope that would be a lot more useful for servicing audio gear. I had a Leader LBO 505 that I used for years. The Leader LBO 505, or the nicer LBO 514 or LBO 515 can be had for under $100, if you watch on eBay. Another good one is the Tektronix 2213 or 2215. For around $250, you can get a new Siglent, Hantek, Owon or Rigol digital scope, all of which would work great for you. Hope that helps.
@@xraytonyb Hi Tony,
Thanks for all the info on oscilloscopes, I’ll know what to look out for now. One thing I’m still not clear about is whether I would need one to successfully build the 6BQ5 amplifier kit, what is your view on that?
Best wishes
Simon
Question, Is this suitable to use if all you really work on are amps and preamps? I built several very cool electronic kits growing up and I'm thinking about getting back into the hobby now that I'm retired. However, the friend who is encouraging me to get back into the hobby is a musician who focuses mainly on restoring old amps and preamps. He's been wanting an oscilloscope and learning how to use one, but he's already very cramped for space. With these limitations, will something like this be very useful? I just wanted to check before getting his hopes up about this particular model. Both videos on this build are great by the way.
How look 5 mhz signal of square in this osciloscope?
You might verify that 3.3K 1% that you had to substitute is good. It's hard for me to verify the colors in Part 1. That resistor sets the gain of the vertical amplifier, so it's critical for accuracy.
I tested it with a meter and it was correct. These newer resistors with the blue body and tiny stripes are terrible to read! That said, I should look into that and see if I can get the vertical to be more accurate by adjusting the value. Thanks for the tip!
At 0:58 you say 300MHz. Did you mean 300kHz? Ahh, yes... kept watching.
For anyone interested, the User manual states:
"When timebase is set to 2us or faster, capture will automatically use Equivalent-Time Sampling method"
So, 5us setting would be the fastest native timebase setting for this scope. 5us per division. A 200Khz signal is 5us, but that would be a full wave in one division right? And I'm guessing it doesn't sample fast enough to get multiple samples per division. If it's one sample per division that would mean at least 10us to get 2 samples, 15us for 3 samples and so on.
If we want 4 samples, for example, that'd be a 20us time which would give us 4 samples for a 50kHz signal, which MAY be enough.
Am I getting this right?
Thanks, Tony, I need to "acquire" a few pieces of gear for my test bench, this little scope looks like a lot of bang for the buck, I would be interested in similar inexpensive projects like this. Looking around the Banggood site I found this "Original JYE Tech DIY FG085 DDS Digital Synthesis Function Generator Kit With Panel" . What do you think ?
1/0.5micoseconds = 1/(5e-7s)=2e6s-1, i.e., 2MHz.
Nice!! (both vids)
I plan on purchasing a used analog scope and a new digital scope.
Very thorough presentation and explanation of the circuit, well done! Having said that: I threw something your way on PayPal so you can buy some lozenges for your throat :D Jokes aside: I hear that coughing on your vids for some months now; consulted a doc yet and checked for allergies or slight asthma? However, get well soon and thanks for your videos!
i still have vacuum scopes, 10 and 20mhz, way better and give true voltage readings, after an hours warm up time.......
Nice little kit if you can't afford a 'proper' 'scope. Would be nice if they did a colour version in that enclosure.
Useless..Garbage! Click that switches few times and they gone...You'll be so frustrated connecting this that you'll end up hating all electronics!
Ur a chick stick to makeup, lululemon,yoga and reality shows. This is a mans tool
@@MrTopsoil911 You're a moron. Stick to uploading videos of yourself eating chips. This a comment section, not a place for you to reveal your personal issues.