Affordable LIUMY Oscilloscope Multimeter review
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- Опубліковано 21 сер 2024
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I saw this on Amazon. Since it was so cheap I assumed that it was junk. Thank you for testing this out.
We thought the same thing and wanted to give it a test.
It’s not junk at all, I used it to set all of my gains and my new system sounds awesome and hits haaaard!
The deviations in measurement is fully acceptable between these units. All handheld test meters will have some slight variations. They are intended to be shop tools, not lab tools. They don't have any way of calibrating themselves. They work perfectly fine for diagnosing and repairing electrical equipment. If you want precision, then you will have to buy benchtop units that are considerably more expensive and less portable.
I bought the Liumy used for $40 and it's the best $40 I've spent on a multimeter/ocilloscope. It works great for troubleshooting guitar amps. Definitely worth having in the tool box.
I've been looking at these for quite awhile now. I think it's about time I pick one up. Saves $100 over the SMD and then I'm able to use it for crossover tuning afterwards. Nice.
How do you use this to tune a crossover?
Great review I actually purchased that from Amazon back in April to tune my system...worked well especially for the price.thanks guys keep up the good work
Glad you did this test. Going to order the Liumy and a speaker popper so I can set my gains like a pro. Amp rack and a clean wire install later.
meter battery voltage can surprisingly have an effect on measurements, especially if the batteries are low. Design and parts can play a role in exact measurements too.
Bought this scope a few months ago because of this video. Thanks guys. Works great.
Thank you so much for review this scope. What a great alternative to more expensive O-scope when all you're trying to do is set gains on an amp. I like that the graph is bigger on the Luimy compared to the 440.
Thanks guys. Oscopes are normally not cheap.
this is now on my Christmas wish list
Make sure to click the link in the video description, thanks
THANK YOU !! For doing this video, been looking at it and a cheap pc based scope to fine tune my system. Now I can buy it with confidence knowing it works for that purpose. I was kinda hoping to see you put it on an amplifier. Maybe a follow up video ??
My takeaway from this, is something i have noticed using several different meters. From Snapons verus, to Vantage Pro, to my Fluke, to any other number i have used, is simply they are all a bit different in terms of readings. However, the difference is well within military spec of 2%. The differences are in a word negligible and do not affect the overall diagnosis, or circuit checks.
That said, i am here to get insight into that cheappie in the center. Having spotted it on amazon for cheap, i could use that on the road and in single channel configuration type diagnosis. A compact mobile scope you dont have to add attenuators and support gear such as BNC to shielded banana adapters is awesome. Add to that its a cheap scope meter and if something happens to it, big deal right? Better that than my snapon. For low precision diagnostics that tool would be perfect.
Its also cool that they showed you can check for clipping of the audio signals with it. Clipping kills speakers. They didnt mention that when an AC audio signal clips, its essentially DC current, and heats up your voice coils just like the electric heating element in your small heaters. Thats bad.
I bought one of these a few months ago and found that the voltage range wasn't enough to set the gain on my bass amp, due to the max being something like 20v. Other than that it is a pretty nice multi meter. I ended up getting a dso 138 kit and a 10:1 probe on amazon. Came out to about 45 bucks. As for how accurate they are I'm not certain but I've only heard good things about the accuracy. Note that some of those dso 138's are kits that are to be assembled and some are finished boards. The board gives me enough adjust ability to get it pretty far zoomed in and the 10:1 probe gives me enough range for any amp I could ever own. Would recommend going for the dso 138 if you just need a simple o scope for setting gains and such.
Very cool thank you for sharing
liquidfun do you happen to know the link for the 10:1 probe or at least its model name?
liquidfun
I used mine to set my gains on my skar rp 1500.1. I was able to set it at clipping which was at a even 53v for me. All you got to do is turn your dial to read a higher voltage. 2v. 20v. 200v. Even 1000v it says.
Thanks for the review. I've been looking to get a decent oscilloscope (something for a beginner in electrical engineering). The decent ones are around $300, which I cant really justify spending right now. This looks like a decent option that'll hold me over until I end up getting a "real" one for a much higher price.
Thanks!
Great little unit, very easy to use with pretty accurate v readings, my pico scope does allot more but I need my laptop for that, my DSO shell scope is ok for the super cheap price but the voltage reading is off, this one does what I need it to do in one tidy little unit and for a great price.
Pretty sure I'm going to order the LIUMY o-scope! Does everything a multi meter does but more importantly you can see "clipping!!" Seems perfect for tuning and the price is right! Thanks for reviewing this guys
Thank you for watching
Great review! Exactly what I needed to know.
Thanks for the video! Looks like I might be buying one for my tuning needs!
Christmas present to self, check!
Thanks for the review, guys.
It made no sense with the hz when you are testing Was it wireless through a speaker I thought you had a hook up the test probe up to it through the amps and speakers and stuff like that
Well made easy to use
Thank you so much!! This is what I need for my projects..
Very good demonstration Very helpful. Well done.
Good value on this product.
👍
Is mustool mt8205 the same thing, just a different name?
yup
Did anybody notice the "440" meter saying " OUCH" when measuring resistance
Yeah that is its default screen, it always makes me laugh
Yes I saw the OUCH & wondered about that too
spotted that immediately.
I like the way the 440 display says "ouch".
I cannot for the life of me get my Liumy to register tones for clipping. What isbthe setting on the thing?
The Infamous
Power on the unit. Switch it to ac by hitting the dc ac button. Then turn dial to the correct voltage you will be reading. 2v. 20v. Or higher.
I’m wondering the difference in voltage could come from the resistance of the leads being used
I noticed the one you linked in description doesnt have as many options and says its only 10a and not 20. Is yours in the video different from the one you linked? I would like the exact same one.. Now there is a foreign one that is et201 but buttons have Chinese lettering. Its confusing when you look at yours and the pics in the add you linked in description. Please let me know. Thank you for your videos and info and for your time.
Anyone know if the capacitor tester is worth anything? A scope, meter, and capacitor tester for less than a hundred would be dope.
I just received mine yesterday and the capacitor test seems to work fine! I agree with the analysis that this meter is well worth the price. I need to play around with it but, it looks like it is going to work fine on my circuit experiments. Great video and just what I needed even though mine is the same model number but different than the one shown here. Good job on showing this meters capability guys! Thumbs up!
You guys are awesome I was trying to buy another app for my car because I broke the one that’s in there I was looking for a meter that I could just use a couple times and throw it in the jar and I was not going to spend three $400 on one I found this one on Amazon and I should look it up on UA-cam and you guys came up I love watching your guys show you guys are so f$&@$ awesome
I'd buy it
Looks like it's worth the buy especially for an oscilloscope under $70
Totally
Five Star Car Stereo just bought one. I like how it was pretty much on point with the dd1 in terms of distortion at 40hz which is what I'll be using it for. I'm assuming you can test for distortion on the preouts the same way?
Where can I pick this up now. It’s not available on Amazon :/
Mine is a model 2001 but has surface mount fuses. I blew a 400 ma fuse do you fellows have any information on this meter. Mine has a different dialon it.
LIUMY link is broken
Guys which is better liumy LM2001 or liumy LM2020?
Cool I always like new play toys will check it out.
What settings do you use for setting gains on amplifier to see? 20v?
Smd dd 1 very nice tuning car audio
Póngalo con subtítulos en español para entender porfavor y los otro video
Add Bluetooth to it for data logging. It it true rms
Why.....why wouldn't they make it auto ranging?!?!
That is why it's $80 vs $300
I just got a LM2001 from Amazon and even thought it has the same model number this meter that is being shown is different? Mine doesn't have the transistor tester. It does have auto range. this meter maybe is an earlier version considering that it does not have auto range? Maybe someone can tell why this is?
i just got mine too and I was wondering exactly the same !
Updated version,
Vote for Pedro...
Whats going on there with the 1000hz tone from phone? That signal is looking crazy
John Buckland I think it was supposed to be on 20v* setting which it was on when testing the radio. Don't tell anybody I paid that much attention, I'll lose my cool kid creds 😎
Haha
Set gains with this on a big amp like 8k rms.would it doit
Will this tool be in your tool draw
Yes, right now there is just a link in the video description.
I subscribed because of this vid.do a 8k amp
I cannot get the oscope screen on my LM2001. How did you get that screen? The manual say select waveform readout but I can't get that screen. Help someone.
Anthony Souza
Hit display to switch between wave and numbers. When on wave hit sele button until it brings up the right wave form
Great review. But this is where I get lost. It’s just over my head.
I have the Lm 2001, can’t seem to get the oscilloscope function to work with music. I want to find the distortion point of my head unit and set my gains. Maybe I’m doing something wrong. It will measure 68 volts coming off my sub amp but won’t show me an oscilloscope pattern at all. Help!
Are you play a 40hz tone?
Five Star Car Stereo yeah, I think I figured it out. Lol
Five Star Car Stereo thanks for the reply, I’m not sure what the issue was at first but all of a sudden it started showing the wave pattern and then worked great. My stereo sounds much better and my subs hit hard now!
You use an electric screwdriver to remove the battery compartment screws? bloody builders. oh and the leads will influence the measurement?
Can you make a video on how to find the max volume of a headunit with a oscope ? Or drop a link anyone ? Need help
The portion where he pulls out the smd is showing just that. Anytime your sine wave is clipping, turn it down until its smooth.
Other videos do this at 1000 hz and 40 hz and your max volume will be whichever of the two is lowest. So if you clip at 25 on 1k hz, and 27 on 40hz, your max volume would be 25 to avoid clipping at 1k hz.
Okay the thing that is bothering me is that at volume 35 i can see the sine wave and squred waves... But as i turn the volume down the sine wave gets really small and cant tell if i am cipping or not...
@@SleepyBoiii change you scale to make the wave easy to see, you want nice rounded wave, no flats on the top or bottom, on your RCA connections + is the center and - is the outer, just connect your leads and set the correct scale
Dang, price has gone up since then );
Would you recommend this over a DD1?
It is more useful
Hell yea thanks guys!!!
Josue Valadez if you watch Steve Meade or D'Amore's videos. It is explained that depending on o scope resolution it can show a non clipped signal and still have distortion which the DD-1 Picks up but may not be shown on the o scope. Clipped oscope signal is not the only way to measure distortion. Again D'Amore engineering you tube page has a very good video demonstrating this with a DD-1 and an o scope. D'Amore obviously knows his stuff..... Being an engineer and all. Doubt he would put a product out if a 60 dollar scope was a better way to go. Any ways that said I think this meter scope is awesome and would be a great addition in any toolbox as part of a complete car audio set of measuring tools to better serve our customers. I looking at this piece also. As an addition not a replacement to the D'Amore engineering's DD-1 and
CC-1
Thanks for the video its very helpful I ordered me one last night I do have a question what about the phase, subsonic, bass Eq and LPF can you tune as well with the 2001 liumy also too thanks for your time.
You'll like "man-purse" mode when you need to climb a ladder.
At 1000HZ He fell asleep....
What is the best setting on the oscope to set gains for a mono block amp and a 4channel amp since the meter isnt auto ranging?
hey i thought you had a toolbox link on your website but I don't see it, i wanted to see the video in/out tester you use for backup cams, any help?
Here you go, bottom of the page
www.dandftooldrawer.com/meters-and-probs/
I saw in the specs that the frequency response is from 2khz to 20kz. Does that mean this thing is useless to find clipped signals in the low to mid frequency range? Please help!
Chris Richards
I set my amps using 40 hz and 1000 hz tones and it worked perfect
Mine works great!
will this work for a 6k rms amplifer
does not measure watts
cool guy I don’t know of any meter that does measure in watts but you can calculate your wattage by measuring the voltage and amperage then use P=IxE to get your wattage.
P=power ( wattage )
I= current ( amperage )
E=voltage.
So use an amp meter on the positive speaker wire to get your total amps then mulitiply that number by the voltage on than same wire. There’s your wattage.
So for example if you have 10 amps and 10 volts then you have 100 Watts.
Hope all of this is clear enough to understand and hope it helps.
Who disliked video? 🙈
No it was fluke and scope plus 440
Estodo compa chauw🤣💪👌👍
I rather go with oscilloscope then smd stuff..
Actually it is a piece of crap.
will this work for a 6k rms amplifer
zach w. It should work for any amp, I have one and it set my system perfectly, sounds awesome!