Thanks for the review. Got mine today and tested it with a home brew 7.023 MHz CW QRP transceiver. Perfect sine curve and 9.09V RMS. Same output power (1.65 W) as shown on my precision wattmeter.
I think its a great tool for people that don't have a lot of money in the third world, but are starting to learn electronics and get into the hobby. This scope, and a cheap DMM like the ANEG AN8008, along with a variable linear power supply and some bread-boarding material, and you have a functional lab, with the means to design audio circuitry and troubleshoot. That chip is most definitely an FPGA. Probably an Altera or a copy. Were there any components under the battery next to this FPGA? Usually there is a flash or something to store the FPGA code.
I didn't peel the battery, as usually they get damaged in the process (strong tape) but peeked on the sides and it did not appear for anything of interest to be under there. Possibly the anonymous device has internal storage? (Agree that it is likely an FPGA of some sort)
If it was an FPGA, they likely wouldn't have needed this much long term averaging. I suspect it's a microcontroller and they have sloppy DMA-less code doing very sparse sampling, and they augment the data over a bunch of wave cycles. This is simply the cheapest way to do it, much cheaper than FPGA, and is super easy to program and drive LCD with. If it was an FPGA also, where is the configuration ROM? Only can think of Lattice or MicroSemi, which have embedded ROM. But i can't match it to any microcontroller either, i tried going by the OSC pin locations across 62/63 and under assumption that 99 is power related, like VCC or VSS. PIC have OSC on 63/64 (18, 24, 32, dsPIC, whatever), AVR has 33/34, STM32F103 (great candidate because cheap) looks promising at first because VSS is 99 and 100 is VDD, but its OSC goes on 12/13, and LPC17xx has it on 22/23, LPC11 on 9/10. ATSAM seem to place them willy nilly, but i am yet to run into a match. Not Cy 5LP either. Puuuh. I mean grinding off markings is stupid, someday someone will spend more time than i did and look past possible decoys by probing it or taking it off, and will know very exactly what the chip is.
That's why I asked if there was a place for a flash chip. Also, the fact that it drops so fast after 4~6MHz, I agree. It's not an FPGA. Most likely an MCU running at multiples of 20MHz with built-in PLL. Dime a dozen.
Those toy oscilloscopes are pretty useful for testing sensors. Extremely useful low budget tool in a field like automotive for example. It would be really easy to test wheel speed sensors, compare 02 sensors, cam and crank position, encoders, etc. Some of them even have the functionality to generate signals, so you may be able to spoof some of these sensors listed above. Not everything requires a fast scope, a lot of them are very reasonable. Especially if you can get one on sale. I would say it depends on what you use the scope for.
I would really like to see you retest that device with a 10x probe on it. One with some input compensation on it. It appears that in the upper left hand corner of the screen it says 1X; which is a hint that it may have a probe attenuation selection. That would be great because then all the measurements, especially where squaring is concerned like with the RMS measurements, would still be correct.
There good for finding the foil end on Poly caps, that can be life or death for your appliance. So they are good for something. Simple signal tracing for audio but you cannot realign VHS heads ect, they just don't have the range / width but for a hobbyist just getting into electronics their great.
Nice Review ! I have a Hantek "multi-meter" sized unit as well as a LA104 mini logic analyser, but this is SO tiny ! Looks like probe is on 1x ? you might need 10x to get above 6mhz ...
I stumbled upon this scope when i went to take a look at ebay out of curiosity to see what scopes are there on offer these days. It looks quite neat, i might consider getting one. I have the DSO138 and it's only good for audio stuff, a 80kHz square doesn't even trigger on it.
Great presentation. I could understand your english without subtitles (I'm non english native speaker). I'm thinking using that kind of device for floating point measurement, like checking motor driver output (like a LMD18200). It's a cheap alternative to those active isolated probes
I agree it's useful, but it doesn't meet the advertised specifications. If it's claimed as meeting specifications, then you either got a defective one, or they're just all not able to meet specs. And there is no excuse for the probe causing the problem. It was sold as a part of the total package. Thanks for the review. We now know what to expect if we buy one. 👍
brother can you confirm whats the minimum voltage por division, and maximum MS / time? are you able to read a signal from 0 to 10Hertz of lets say 0.5V? king regards
Lite-On 356T optocoupler. Also one package is not like the others. The one near the headphone jack in the group of two. I really have no idea how this frontend is supposed to work!
Thanks! It really is nothing like a conventional front end of a scope. It seems there is only switching for different levels of attenuation, and maybe coupling. And even that is really basic, as simple as a resistor divider. But hold on, an optocoupler? In front end?? That does not make sense...
No, it really is completely absurd. But it certainly LOOKS like that particular optocoupler. The slanted L is a match for the logo the Lite-On semiconductor division prints on their products, and 356T seems super unambiguous! Perhaps the ticket is that there's like 6 of the things and yet another seventh one which also looks like an optocoupler. It's not like you couldn't make optocouplers transmit analogue signal though if you really tried, and it's not like you couldn't fix the horrible distortion in software.
Optocoupler as madman's JFET? What if the input side LED is PWM controlled, maybe filtered with a ceramic cap, and the output acts as a variable resistor of sorts?
Siana Gearz Was about to say the same thing. PC356T. To anyone unawares. Use 3w* smdmark [dot] com. You can only search 20 inquiries per day, (I think they are logging user's IP, I know it's not just cookies). If you do partial searches like they advise on the site, they have the best search results for things I never thought I'd track down ;)
Turuta's SMD code databook is stellar, at least for Western ICs. Another strategy i have is going straight on Baidu instead of Google - when you're dealing with Chinese electronics domestic semiconductors are often involved.
This little toy in China is only 40US dollar. I thinke this little kit is quite worth it compare with others professional oscilloscope for DIY purpose.
Unfortunately i cannot decode the part number, but it's something like this, just lower voltage and with better specs www.ixysic.com/home/pdfs.nsf/0/9B95EEECA83780688525720B0055EE7F/$file/CPC1390.pdf
Richard Smith Thot the same thing...that’s why it’s so cute. I’m digging that back side curve IPhone 4 profile...Hey, that hadda do something with extra knockoff Apple parts...
What can you use it for practically? As other reviewers have pointed out these all seem to be just toys for having fun with! Remember to click the product links to support the channel: Links do not work!
I use mine for repairing audio gear, feed a sine wave in from the function generator and follow it through the circuit until it stops...there's your problem.
Thanks for the review. Got mine today and tested it with a home brew 7.023 MHz CW QRP transceiver. Perfect sine curve and 9.09V RMS. Same output power (1.65 W) as shown on my precision wattmeter.
Quite impressive for its size, dude. Really nice! 😊
Thanks!
It's the don't blow up a $400 full size beginner's scope / safe battery powered beginner's model.
You could think of it that way :)
Touché. Wisely put. I guess I’ll plan on getting one it, lol.
I think its a great tool for people that don't have a lot of money in the third world, but are starting to learn electronics and get into the hobby.
This scope, and a cheap DMM like the ANEG AN8008, along with a variable linear power supply and some bread-boarding material, and you have a functional lab, with the means to design audio circuitry and troubleshoot.
That chip is most definitely an FPGA. Probably an Altera or a copy.
Were there any components under the battery next to this FPGA? Usually there is a flash or something to store the FPGA code.
I didn't peel the battery, as usually they get damaged in the process (strong tape) but peeked on the sides and it did not appear for anything of interest to be under there. Possibly the anonymous device has internal storage? (Agree that it is likely an FPGA of some sort)
If it was an FPGA, they likely wouldn't have needed this much long term averaging. I suspect it's a microcontroller and they have sloppy DMA-less code doing very sparse sampling, and they augment the data over a bunch of wave cycles. This is simply the cheapest way to do it, much cheaper than FPGA, and is super easy to program and drive LCD with. If it was an FPGA also, where is the configuration ROM? Only can think of Lattice or MicroSemi, which have embedded ROM.
But i can't match it to any microcontroller either, i tried going by the OSC pin locations across 62/63 and under assumption that 99 is power related, like VCC or VSS. PIC have OSC on 63/64 (18, 24, 32, dsPIC, whatever), AVR has 33/34, STM32F103 (great candidate because cheap) looks promising at first because VSS is 99 and 100 is VDD, but its OSC goes on 12/13, and LPC17xx has it on 22/23, LPC11 on 9/10. ATSAM seem to place them willy nilly, but i am yet to run into a match. Not Cy 5LP either. Puuuh. I mean grinding off markings is stupid, someday someone will spend more time than i did and look past possible decoys by probing it or taking it off, and will know very exactly what the chip is.
That's why I asked if there was a place for a flash chip. Also, the fact that it drops so fast after 4~6MHz, I agree. It's not an FPGA. Most likely an MCU running at multiples of 20MHz with built-in PLL.
Dime a dozen.
I didn't even expect it to do 500Khz, honestly. So an 2-5Mhz true bandwidth really isn't too bad for such a tiny el-cheapo thing x3
Those toy oscilloscopes are pretty useful for testing sensors. Extremely useful low budget tool in a field like automotive for example. It would be really easy to test wheel speed sensors, compare 02 sensors, cam and crank position, encoders, etc. Some of them even have the functionality to generate signals, so you may be able to spoof some of these sensors listed above. Not everything requires a fast scope, a lot of them are very reasonable. Especially if you can get one on sale. I would say it depends on what you use the scope for.
I got one too..it's not bad at all, very usefull around a hobbiest board.
Holding MENU and SELECT buttons brings you calibration menu. May be after calibration the reading could be a little bit better.
I would really like to see you retest that device with a 10x probe on it.
One with some input compensation on it.
It appears that in the upper left hand corner of the screen it says 1X; which is a hint that it may have a probe attenuation selection.
That would be great because then all the measurements, especially where squaring is concerned like with the RMS measurements, would still be correct.
Thanks again Chris. Just think its price is borderline, Personally I have spent £190 and went for a genuine Uni-t utd2102 from ali.exp.
There good for finding the foil end on Poly caps, that can be life or death for your appliance. So they are good for something. Simple signal tracing for audio but you cannot realign VHS heads ect, they just don't have the range / width but for a hobbyist just getting into electronics their great.
Nice Review !
I have a Hantek "multi-meter" sized unit as well as a LA104 mini logic analyser, but this is SO tiny !
Looks like probe is on 1x ? you might need 10x to get above 6mhz ...
Jeremy Kelaher I was just checking to see if someone else commented on this before I did;) nice catch!
I stumbled upon this scope when i went to take a look at ebay out of curiosity to see what scopes are there on offer these days.
It looks quite neat, i might consider getting one. I have the DSO138 and it's only good for audio stuff, a 80kHz square doesn't even trigger on it.
The frequency response seems to be an order of magnitude better than the other cheapie mini DSO's, and I've tried several of them.
I’m going to get this and the DS212. I need an Affordable oscilloscope for my work.
Great presentation. I could understand your english without subtitles (I'm non english native speaker). I'm thinking using that kind of device for floating point measurement, like checking motor driver output (like a LMD18200). It's a cheap alternative to those active isolated probes
Perfect for audio 👍
I agree it's useful, but it doesn't meet the advertised specifications. If it's claimed as meeting specifications, then you either got a defective one, or they're just all not able to meet specs. And there is no excuse for the probe causing the problem. It was sold as a part of the total package.
Thanks for the review. We now know what to expect if we buy one. 👍
brother can you confirm whats the minimum voltage por division, and maximum MS / time? are you able to read a signal from 0 to 10Hertz of lets say 0.5V? king regards
Can it read RF signal from CD-rom drive boards ?
Lite-On 356T optocoupler.
Also one package is not like the others. The one near the headphone jack in the group of two.
I really have no idea how this frontend is supposed to work!
Thanks! It really is nothing like a conventional front end of a scope. It seems there is only switching for different levels of attenuation, and maybe coupling. And even that is really basic, as simple as a resistor divider.
But hold on, an optocoupler? In front end?? That does not make sense...
No, it really is completely absurd. But it certainly LOOKS like that particular optocoupler. The slanted L is a match for the logo the Lite-On semiconductor division prints on their products, and 356T seems super unambiguous! Perhaps the ticket is that there's like 6 of the things and yet another seventh one which also looks like an optocoupler. It's not like you couldn't make optocouplers transmit analogue signal though if you really tried, and it's not like you couldn't fix the horrible distortion in software.
Optocoupler as madman's JFET? What if the input side LED is PWM controlled, maybe filtered with a ceramic cap, and the output acts as a variable resistor of sorts?
Siana Gearz
Was about to say the same thing. PC356T.
To anyone unawares. Use 3w* smdmark [dot] com. You can only search 20 inquiries per day, (I think they are logging user's IP, I know it's not just cookies). If you do partial searches like they advise on the site, they have the best search results for things I never thought I'd track down ;)
Turuta's SMD code databook is stellar, at least for Western ICs. Another strategy i have is going straight on Baidu instead of Google - when you're dealing with Chinese electronics domestic semiconductors are often involved.
This little toy in China is only 40US dollar. I thinke this little kit is quite worth it compare with others professional oscilloscope for DIY purpose.
is it a signal generator also
Good review
Does it have a single shot mode ?
There is another DSO168 made by JYETech thta only goes to 200Khz, still useful at the price
I wonder now if it does better when fully charged lol
I live in hope that someone will make something worth buying
The 4-pin devices are solid state relays.
Interesting, do you have any link for a datasheet? Thanks
Unfortunately i cannot decode the part number, but it's something like this, just lower voltage and with better specs www.ixysic.com/home/pdfs.nsf/0/9B95EEECA83780688525720B0055EE7F/$file/CPC1390.pdf
Thank you.
20Mhz analoge bandwidth, so you can measure +-2Mhz signal.
It's just an old MP3 player with different firmware, genious!
Wonder if there's an open source oscilloscope project for MP3 players somewhere?
5:36 LTV-356T
www.mouser.com/ds/2/239/LTV-356T%20Series-1308-301539.pdf
james bonds spy gear lol
0.3 and 0.5mm layer toner transfer un sec..
liked and subbed
Repurposed ipod mini clone?
Richard Smith Thot the same thing...that’s why it’s so cute. I’m digging that back side curve IPhone 4 profile...Hey, that hadda do something with extra knockoff Apple parts...
£43.00 for a toy? Not a chance!!
What about 25$ on sale?
Aliexpress has the best price.
What can you use it for practically?
As other reviewers have pointed out these all seem to be just toys for having fun with!
Remember to click the product links to support the channel: Links do not work!
I use mine for repairing audio gear, feed a sine wave in from the function generator and follow it through the circuit until it stops...there's your problem.
besides its device only 5 MHz
Looks like I pod
bán cái đi
Ipodoscope
Sum layer mising