I have one of these and I like it a lot - re the diode test mode, from firmware 1.5 the diode symbol on the display rotates to shows you the "direction/polarity" of the diode junction across the tweezer legs but still doesn't allow you test the diode in the reverse direction. Very good addition to a "portable" toolkit
I kinda assumed if FNIRSI sene me a review sample they are gonna send me one with the latest firmware, because obviously I'm gonna take the thing out of the box and try it on video 🤪
0.3V is to be used for in-circuit measurements to avoid turning on adjacent P-N junctions. They mean to say not “powered on” when they say not for online measurements. Diodes do not get enough voltage to be past the knee of the diode’s VI curve, so that is why the voltage is for reference only. There is no DC voltage on this device. Everything is measured using a AC signal without any DC bias. This is why diodes are identified for direction and also why polarized caps may carry some measurement error.
I just bought a $4 tweezer-clip test cable and I use my NanoVNA (which didn't cost a lot more than this device,) to get a device's characteristics. Since it includes a device's characteristics over a very wide range of frequencies it's particularly handy for RF projects. That and a $10 quickie component tester together save me a lot of time sorting through surplus parts, as well as pulled components that I desolder from scrap boards. It even provides something of a quality check if I get somewhat different readings for other attributes or at high frequencies from one component in a group of otherwise similar components.
Thanks for the Ali link 😀 worked a treat! I have their iron and the 1014d scope, too, so this will be interesting to try out ! £26.87 to the uk including delivery. Happy days
I have one, different brand but essentially the same thing. It is handy for checking smd components in circuit for shorts and open circuit. Not a replacement for a good multimeter but useful in certain situations.
This video came at the perfect time. I was looking at buying one the day before watching but was,'t sure. Now You have done the work for me and I will buy one.
I found mine very useful a couple days ago when I was struggling to hold two test leads on a micro switch while pressing the switch button with my other hand. So basically a tweezer continuity tester. :)
@@g4z-kb7ct Nice! I bought one of those once but they were such bad quality, it was difficult to get them to align properly on small components. Would love to get a good quality set.
I think you could have also tested component out of circuit to 1 give better comparison of accuracy, we know measuring in circuit for individual component is not very accurate
I tested it in the way I know most viewers would be interested to see how it functions. However there is the live stream Sunday 6th October and we can take another look at this. Come and join us if you are free
Just had mine delivered yesterday! Not really tried it properly yet. Have been looking for a one-handed on-board SMD tester for a while and this seemed to be the most current one. Guess will see how much I use it compared to the DMM and others...
Components used to be really big and they could be removed from circuits for testing and then returned reasonably safely and reliably. That's no longer true and SMD components are often so small they can only be accurately attached to the pcb by machines. I'm guessing that these tweezers are a pretty effective way of testing components in circuit to establish whether they are working or not? If you're struggling to diagnose/find a problem caused by a component or components working but at different values from their specification you're going to need more than a 30 quid set of tweezers?
It would be better if they offered a DC setting for resistance. I suspect the leads are not polarized since the test leads use an AC signal (why Diode Mode acted that way). It would be nice to compare components (out of circuit) to see how it sizes up with more expensive test equipment.
looks like they updated the firmware yours is way more accurate then what the other reviewers had.. especially eith the ESR .. it would always show the same value no matter what capacitor they tried
Richard, I recommend watching it. Miron63 - лучший помощник в ремонте! Смотрим видео - Miron63(M63-v3.4h) vs Fnirsi (LCR-ST1). Сравнение внутрисхемных измерений Miron63 и FNIRSI LCR-ST1
@@LearnElectronicsRepair The commercial version (M63-v3.4h) was created specifically for repairmen. A non-commercial version for self-assembly is available for repetition. Version V3.
Heya, for the price I guess it's a nice tool. pretty fast with it's readings. only the diode testing ??? wel I guess that wen a diode is shorted it will tel you "zero"? or wen it's open circuit.
This is something that will probably sell to noobs simply because of the wow-factor or cool-factor but experienced people doing repairs already know measurements taken in-circuit are rarely accurate, especially when there are almost always multiple parts in series so the only real way to check them is to remove the part and test it out of circuit, which can often be done with any multimeter or a ten dollar component tester. Summary: Nice idea but not much use to anyone who already has a bunch of equipment _and_ knows how to use it. For a nice one-handed experience just spend $1 and buy simple tweezer leads that plug into any multimeter.... that's what I did ~15 years ago.
I would like to Thank, FNIRSI for sending you this interesting device for review, I have been interested in this Device and how it works, and what it can do in component testing... This general demonstration of the product was very useful, we got to understand its operation and testing capabilities and a good discussion about its usability, I think as we continue to use it on the channel we will learn more about its ability to reveal whether a component is faulty or good. This is why look forward to the opportunities that will be apparent in your future videos. What I see with this product has shown me that it's worth purchasing... And that will be happening soon, we will learn more about the characteristics of this product and gain greater understanding of how to use it. As with all test equipment learning the devices testing capabilities will become more apparent as we use it.
Richard, they seem a bit quirky to use, I don't think I would spend 40 dollars on them. The tips look to be very bendy as you were using them, as opposed to multimeter probes. Paul, USA!
Thousands of curious fans of gadgets will find $40 to throw away on an instrument that will spend most of its time in the drawer when the novelty of it wears off - after a few months or a year - it will end up in the trash. Better use the $40 to buy some SILVER to offset inflation
@pauldery7875 That's normal on this channel. The tips are bendy because Rich is heavy-handed lol ;-) Watch some of his other vids where he's using a multimeter and the probes bend like a banana heheh!
Richard that is not what I meant with hot tweezers... hot tweezers are basicalle a soldering iron in the form of a tweezer so you can desolder componets in tight places or in the other cases you do not need to soldering irons... that is just a tester.. so when you said in the live stream you got something like that coming that is not even close to what I was talking about.... you always say use the right tool for the job... well then use the right tool for the job and get your self a pair of hot tweezers !!!!!!!
Looks like theyd be decent booger pickers. I doubt im ever going to pick up some cheapo smart tweezers to diag components over the trusty fluke and the auto component tester..
The problem with having too many similar test instruments presents itself as a result of a human factor - and that is curiosity and doubt. The combination of the two then results in an inefficient time wasting environment. How is it so ? You may well ask. One starts comparing the test results across the other test instruments because of the curiosity factor.. Each instrument will have a slightly different reading - usually the discrepancy is minimal - but where the reading is significant - doubt begins to surface. either way - the time taken to take the measurements is wasted on comparison of results rather than that time being used used efficiently in the repair process. So it is better to stick with the trusted instruments one already has - trusts and is familiar with. Like having too many knives in the kitchen drawer - you will not know which one of them is the best one to use. Sure - FNIRSI wish to sell as many as possible - that is more money being siphoned off to CHINA where they will invest it in Gold - Silver and overseas Real estate to rent --- That is why your Real Estate values keep rising. The Chinese economic python is slowly strangling you.
Yeah it's a real hassle that manufacturers send me free stuff to review. But i'm not racist about it, UK, USA and any other companies based in any other location are quite free to send me their stuff too and I will review it in the same fair manner. Strange though, for the main part they don't appear to interested in promoting their products. That's not my fault, and as I mentioned I'm not racist about whoever wants to send me stuff, if it is electronics test/repair related I'll look at it. I have no prejudice against the Chinese. I've even been there, it was an interesting place.
I have one of these and I like it a lot - re the diode test mode, from firmware 1.5 the diode symbol on the display rotates to shows you the "direction/polarity" of the diode junction across the tweezer legs but still doesn't allow you test the diode in the reverse direction. Very good addition to a "portable" toolkit
I kinda assumed if FNIRSI sene me a review sample they are gonna send me one with the latest firmware, because obviously I'm gonna take the thing out of the box and try it on video 🤪
0.3V is to be used for in-circuit measurements to avoid turning on adjacent P-N junctions. They mean to say not “powered on” when they say not for online measurements. Diodes do not get enough voltage to be past the knee of the diode’s VI curve, so that is why the voltage is for reference only. There is no DC voltage on this device. Everything is measured using a AC signal without any DC bias. This is why diodes are identified for direction and also why polarized caps may carry some measurement error.
This is a very good tip. Thanks for the info!
I just bought a $4 tweezer-clip test cable and I use my NanoVNA (which didn't cost a lot more than this device,) to get a device's characteristics. Since it includes a device's characteristics over a very wide range of frequencies it's particularly handy for RF projects. That and a $10 quickie component tester together save me a lot of time sorting through surplus parts, as well as pulled components that I desolder from scrap boards. It even provides something of a quality check if I get somewhat different readings for other attributes or at high frequencies from one component in a group of otherwise similar components.
Thanks for the Ali link 😀 worked a treat! I have their iron and the 1014d scope, too, so this will be interesting to try out ! £26.87 to the uk including delivery. Happy days
I have one, different brand but essentially the same thing. It is handy for checking smd components in circuit for shorts and open circuit. Not a replacement for a good multimeter but useful in certain situations.
This video came at the perfect time. I was looking at buying one the day before watching but was,'t sure. Now You have done the work for me and I will buy one.
I found mine very useful a couple days ago when I was struggling to hold two test leads on a micro switch while pressing the switch button with my other hand. So basically a tweezer continuity tester. :)
I had that problem and solved it by buying tweezer multimeter leads which plug into any multimeter and that gives the same capability for about $1 ;-)
@@g4z-kb7ct Nice! I bought one of those once but they were such bad quality, it was difficult to get them to align properly on small components. Would love to get a good quality set.
A teardown of this would be interesting. Thanks Richard.
I think you could have also tested component out of circuit to 1 give better comparison of accuracy, we know measuring in circuit for individual component is not very accurate
I tested it in the way I know most viewers would be interested to see how it functions. However there is the live stream Sunday 6th October and we can take another look at this. Come and join us if you are free
Hi Richard 🤗🖖
Nice Tools. Good and intresting review👍👍
Excellent Thank you.
Just had mine delivered yesterday! Not really tried it properly yet. Have been looking for a one-handed on-board SMD tester for a while and this seemed to be the most current one. Guess will see how much I use it compared to the DMM and others...
I solved that problem by buying tweezer multimeter leads which plug into any multimeter and that gives the same capability for about $1 ;-)
Just ordered from Banggood , £18.96 including VAT plus a couple of quid postage.
I give it a 6 out of 10
Components used to be really big and they could be removed from circuits for testing and then returned reasonably safely and reliably. That's no longer true and SMD components are often so small they can only be accurately attached to the pcb by machines. I'm guessing that these tweezers are a pretty effective way of testing components in circuit to establish whether they are working or not? If you're struggling to diagnose/find a problem caused by a component or components working but at different values from their specification you're going to need more than a 30 quid set of tweezers?
It would be better if they offered a DC setting for resistance.
I suspect the leads are not polarized since the test leads use an AC signal (why Diode Mode acted that way).
It would be nice to compare components (out of circuit) to see how it sizes up with more expensive test equipment.
looks like they updated the firmware yours is way more accurate then what the other reviewers had.. especially eith the ESR .. it would always show the same value no matter what capacitor they tried
Richard, I recommend watching it.
Miron63 - лучший помощник в ремонте!
Смотрим видео -
Miron63(M63-v3.4h) vs Fnirsi (LCR-ST1). Сравнение внутрисхемных измерений Miron63 и FNIRSI LCR-ST1
Seeing as no one sent me a Miron63 as a comparison then how can I make a comparison?
@@LearnElectronicsRepair
The commercial version (M63-v3.4h) was created specifically for repairmen.
A non-commercial version for self-assembly is available for repetition.
Version V3.
Heya, for the price I guess it's a nice tool. pretty fast with it's readings. only the diode testing ??? wel I guess that wen a diode is shorted it will tel you "zero"? or wen it's open circuit.
Yeah that is true - how else can as Diode fail really?
Did you zero the prongs together initially, as it wasn't obvious that you did, on camera?
This is something that will probably sell to noobs simply because of the wow-factor or cool-factor but experienced people doing repairs already know measurements taken in-circuit are rarely accurate, especially when there are almost always multiple parts in series so the only real way to check them is to remove the part and test it out of circuit, which can often be done with any multimeter or a ten dollar component tester. Summary: Nice idea but not much use to anyone who already has a bunch of equipment _and_ knows how to use it. For a nice one-handed experience just spend $1 and buy simple tweezer leads that plug into any multimeter.... that's what I did ~15 years ago.
isnt that what ESR meters are for? Given how they work the idea is to be able to measure in circuit.
@@cod4Rlp If you want to waste time go ahead. I just remove them in seconds and measure properly out of circuit.
@@g4z-kb7ct what about when they're 0603 or below sized?
@@cod4Rlp Same.... remove, check etc. Any part no matter the size is easy to deal with when you know how ;-)
I would like to Thank, FNIRSI for sending you this interesting device for review, I have been interested in this Device and how it works, and what it can do in component testing... This general demonstration of the product was very useful, we got to understand its operation and testing capabilities and a good discussion about its usability, I think as we continue to use it on the channel we will learn more about its ability to reveal whether a component is faulty or good. This is why look forward to the opportunities that will be apparent in your future videos. What I see with this product has shown me that it's worth purchasing... And that will be happening soon, we will learn more about the characteristics of this product and gain greater understanding of how to use it. As with all test equipment learning the devices testing capabilities will become more apparent as we use it.
I wonder how this compares to the Zotac Zoyi tweezers or the Shannon tweezers?
Well come to mention it, after last weeks livestream I was approached by one of those companies....
I think "online measurements" means the tested device being powered on.
Nice tool, but I doubt I would use it very much.
Richard, they seem a bit quirky to use, I don't think I would spend 40 dollars on them. The tips look to be very bendy as you were using them, as opposed to multimeter probes. Paul, USA!
Thousands of curious fans of gadgets will find $40 to throw away
on an instrument that will spend most of its time in the drawer
when the novelty of it wears off - after a few months or a year -
it will end up in the trash.
Better use the $40 to buy some SILVER to offset inflation
There is a special offer link in the video description...
@pauldery7875 That's normal on this channel. The tips are bendy because Rich is heavy-handed lol ;-)
Watch some of his other vids where he's using a multimeter and the probes bend like a banana heheh!
I think Mastech even better compare with this fnirsi
Richard that is not what I meant with hot tweezers... hot tweezers are basicalle a soldering iron in the form of a tweezer so you can desolder componets in tight places or in the other cases you do not need to soldering irons... that is just a tester.. so when you said in the live stream you got something like that coming that is not even close to what I was talking about.... you always say use the right tool for the job... well then use the right tool for the job and get your self a pair of hot tweezers !!!!!!!
Looks like theyd be decent booger pickers. I doubt im ever going to pick up some cheapo smart tweezers to diag components over the trusty fluke and the auto component tester..
To be honest, I'd rather have a tweezer probe for a regular LCR meter than yet another device with a separate battery.
also I have seen other reviews of that tester and it is not very accurate !!
The problem with having too many similar test instruments
presents itself as a result of a human factor - and that is
curiosity and doubt.
The combination of the two then results in an inefficient
time wasting environment.
How is it so ?
You may well ask.
One starts comparing the test results across the other
test instruments because of the curiosity factor..
Each instrument will have a slightly different reading -
usually the discrepancy is minimal - but where the reading
is significant - doubt begins to surface.
either way - the time taken to take the measurements is
wasted on comparison of results rather than that time
being used used efficiently in the repair process.
So it is better to stick with the trusted instruments one
already has - trusts and is familiar with.
Like having too many knives in the kitchen drawer - you
will not know which one of them is the best one to use.
Sure - FNIRSI wish to sell as many as possible - that is more
money being siphoned off to CHINA where they will
invest it in Gold - Silver and overseas Real estate to
rent --- That is why your Real Estate values keep rising.
The Chinese economic python is slowly strangling you.
Yeah it's a real hassle that manufacturers send me free stuff to review. But i'm not racist about it, UK, USA and any other companies based in any other location are quite free to send me their stuff too and I will review it in the same fair manner. Strange though, for the main part they don't appear to interested in promoting their products. That's not my fault, and as I mentioned I'm not racist about whoever wants to send me stuff, if it is electronics test/repair related I'll look at it. I have no prejudice against the Chinese. I've even been there, it was an interesting place.