Check out this handy gadget! The GM328 Component Tester

[@dropdestroy]

with some leads you could id board components

[@Schematix]

That's an application I hadn't thought of. That would be quite handy at times! Great idea :)

[@lprkon72]

That's what the pads are for under the lever

[@dropdestroy]

@@lprkon72 No, like on a board components

[@lprkon72]

@@dropdestroy got it

[@lprkon72]

@@dropdestroy although I would the that doing that might give completely abnormal readings

[@phillewin3645]

From the documentation 1.12k self test calibration requires capacitor between 100nF and 20mF (even though tool only says > 100nF). Using 100mf does not complete the calibration as on completion it displays the calculated calibration values. I was constantly being told it was not calibrated. It was only after reading the manual on the link mentioned by the tool that I used a 10mF capacitor and the final phase completed with an extra page of info. No more nagging about calibration. Hope this helps someone looking for additional info. Great video!

[@mikefc55]

Thank You , you saved me a lot of time today. I spent one hour playing with it, figured out some of the function procedures then decided to search YT and .....VOILA! 12 minutes later, I'm all set

[@johnmcclain3887]

great video, I just bought one, put it together, haven't tested it yet, can't find a nine volt battery in my house or shop!! Thanks for showing all the details of testing, and the functions, I got a lot more than I thought.

[@planker]

Like. watched for the second time. I have the simple version but spilled coffee on it, so today I have the GM328A and printed the manual. Thanks for that. After killing the first one it felt like loosing my phone, I became dependant on the gadget. New gear! $16 w/case, I'm excited.

[@scroft469301]

I should get one. I have drawers full of small components from breadboard projects I was too lazy to put back in the right place. Especially 1/4 watt resistors, zener, and switching diodes. Fun video!

[@Vitaliuz]

Nice review! _And the bonus clip is like a cherry on top._

[@Guitargreat]

I just bought this thanks that calibration makes sense now

[@mqblowe]

Life saver of a video. Well done mate. Bought this device in kit form from Amazon and it came with absolutely sweet FA documentation! 👍

[@stevenA44]

Not too fond of the start of the video, but, the content after that was really informative. I got one of these yesterday for free! I used to have a Radio Shack transistor checker but who knows where it is now. I didn't know what this was when a friend gave me one until I got home and really looked at it. Your video helped me get it calibrated and show me how to use it. Thanks! Thanks also for the link to the manual.

[@incubatork]

I like mine not just for identifying components but testing them, especially transistors, it will tell you if they are good or not. its also in colour. It also came with leads for on board testing and some other bits and pieces and a usb conection for power or charging. I paid €13 ($21 au) including postage

[@hardcoreplayafromthehimala4888]

When I'm testing mosfet, where do I read it's bad or good?

[@englishrupe01]

@@hardcoreplayafromthehimala4888 If it reads it then it means it is good. If not then it will say "unknown component".

[@hardcoreplayafromthehimala4888]

@@englishrupe01 thanks😀

[@AntonioClaudioMichael]

That little handler scope meter is nice

[@bryanpatrick7272]

As far as I am concerned the only helpful part was the last quarter of the video. I stopped the video and use the advancement bar on the bottom to move forward to get still pictures of the finished product, which that helped out greatly. To start a couple of the pieces were thicker and I had to file down the tangs to get them to just fit. Now except for the very top I put the bottom and the sides together first " I didn't but rubber bands probably would have helped to keep things together as you advanced". Next I removed the screws and "long nuts" from the GM328 unit, you will not need them. Next the 4 shorter "long nuts" go on top of GM328 which screw under GM328 into the shorter 2 "long nuts up in front of GM328 and repeat with the longer "long nuts" in the rear. Now drop everything except the acrylics pieces inside of bottom half and use the nuts to attach. Now all that's left is the top 3 acrylic pieces. in order, start with the large piece on the bottom, next the piece that has the cut out for screen and the last whole piece on top. Set it on top of bottom half. I had to squeeze at tang attach area's to make sure they were firmly attached. YOUR DONE. Except you need to make an extension arm for the lever with a tube or something. Sorry I'm still working on it. And Yeah, Patience is the name of the game. Have fun and good luck! I spent about a little over 3 hours, Argh! Lol

[@LordPhobos6502]

One small thing i found with these testers... they can-t identify zener diodes properly. They detect the forward voltage, but not the zener/reverse voltage. However, you can sometimes trick em by putting a small signal diode in reverse-series with them, and then subtract that diode's forward voltage.

[@opt_out]

The moment you started wrapping the 9V was the moment I subscribed. :-D

[@scaramonga]

The moment he started moaning about not being able to fit a 9v battery in case, which was not designed to be fitted in that case, as that is why it has an alternative means of power, thus I didn't subscribe, and it would have been easy to convert to Lipo power, which would have fitted nicely inside that case, with a charging socket to boot, as I have mine ;) And no machine job to make it fit either :)

[@BomJimmy]

Ordering today. thank you for the detailed video.

[@noelandrew3600]

Handtech scopes are pretty cheap on ebay, round $300 for a 100mh model, and that can be upgraded to 200mh with a firmware update. its what i use in my lab and it serves me well. i also have a crt scope that i picked up for $20 at the local recycling center. i have also recently found an awesome tech recycling company here in chch so if there is anything your looking for let me know. got a huge pile of stuff there last week, including huge IGBTs and a 5mw laser!

[@Schematix]

Thanks for info! I have been browsing around the internet for a digital o-scope. The Handtek scope looks like the best bang for the buck? I was also looking at the keysight EDUX1002A. It's about double the price. But I'll probably never need to upgrade for what I do. I've wanted to build a grunty laser for my CNC mill, for engraving/cutting. I'm interested in that recycle place in chch. Can you flick me an email? I have a business email address under the "About" tab on my channel.

[@AUSGoodKnife]

easily one of the best channels on youtube, please keep it up :)

[@Schematix]

You know comments like this mean the world to me. They keep me enthusiastic and motivated to pump out more videos. Thanks ;)

[@3dkiwi920]

Didn't even know these existed in such an inexpensive form, thanks!

[@Schematix]

:)

[@eddielane9569]

I wish I could have a better understanding of electronic components more than the small amount that I do. I want to learn to know what they are and how to use and diagnosis them so I can know if they are good or bad. I would also love to make things as well but my primary desire is to diagnose failures.

[@pfb3264]

Thanks for the video! I just got one of these but had trouble finding any instructions Got both the manual and a run through of operation 👍 Plan to use 2x small mobile phone batts (~7.4v) for power which will fit in the case

[@englishrupe01]

Cool video, thanks Schematix! I have 3 of these now that all look different but i know they all use the same M328 chip. I cant help buying them....bit like buying multimeters! Just gotta try the next one too...lol! Thanks for showing!

[@anthonyvolkman2338]

Just got mine in the mail and excited to test it!

[@msana4420]

Your "cool bro" should be featured more often. Reverse polarity must be his speciality 😂😂

[@kruskotv1311]

2:30 what is the polarity of power adapter(center positive or center negative) I should use and what voltage/current ?

[@acestudioscouk-Ace-G0ACE]

Great video as ever and a great piece of kit at the price!

[@javierpallalorden]

Excellent video, thanks for sharing!

[@gutrali]

What is on the market today that matches the functions of this device? Are they all a lot more expensive? Have our options improved in the 3 years since you made this video? Thanks for what you do

[@TritonNEWS]

Thank you, great video.

[@jamesallen6007]

Excellent video. Many thanks.👍🇬🇧😷

[@rodjones6013]

Thanks for the video, very handy, I just bought one, cheers

[@carolxaris9788]

Very useful. Thanks

[@michaelmurray3422]

If you are going to test capacitors, make sure they have been discharged. These component testers will quit working if hit with a charged capacitor. You end up with a spare display and a zif socket.

[@Lagggerengineering]

I bought one of these but upon assembly it didn't work and the screen was damaged. Never got it to work, but at least I got some soldering practice. Might buy another one tho, I heard these are the better ones.

[@antoniskantidakis2585]

Useful video. Thank you.

[@delacierte26]

How can I restore the backcolor? accidentally set the backcolor green and this is confused with the green fonts of the frontcolor, so the screen is all green

[@SianaGearz]

I have a $5 monochrome single-button one. It's fairly exact and doesn't go through batteries. This should be a bit more powerful due to rotary click encoder but for most things, i really don't care.

[@irishguy200007]

Will this check esr of capacitor in circuit?

[@simadorin21]

Regarding the f-Generator from min.10 .I bought one and it doesn't have the default frequencies for me as in the presented clip. It appears written on three columns -f-Generator., 1Hz and f-00Hz. I don't know what the cause is. from software?

[@abeditani8293]

I don't know if you put the box together in wrong way or your missing something or they send you the wrong box . But I have the same one that you have exactly and iam sure that not the way to put the box together because you're LCD is not covered under it and your battery not supposed to be moving around like that

[@JAKOB1977]

Is this still the best cheapo function tester? It seems to give a tad more information than the 5USD ones with just a testbutton, and that click-turnknob does seem to be handy. Thx for the vid.

[@q12x]

very good testing .

[@awesomed007]

Could you please do a video using this for measuring lithium battery esr

[@HECKAKYH-ADEKBATEH]

Anyone know how this cyan contact press part is called, please? Edit: TFXTDOL, found it.

[@dollarbil961]

Mine doesn't work, where can I get the code for the atm3l chip? I want to put. It in an arduino and rewrite the code

[@diwalychabin6049]

belle vidéo merci

[@djay6651]

I'm curious as whether one can test Jfet transistors on this device.

[@IgorArt1363]

Could you tell me what is the difference between the GM328 and GM328A versions?

[@YukselKeser]

I wish I had one of this device too.

[@hugh5243]

This dude sounds like a group on the same block as Jim Browning

[@AntonioClaudioMichael]

Good tester have a few of them

[@englishrupe01]

Yep, me too! Cant resist!

[@derofromdown-under2832]

Great review dude... 10/10

[@AntonioClaudioMichael]

Great video

[@samdeur]

Mine came without a knob knob. Need to buy one.. first see how to measure the size.

[@electronic7979]

Useful item

[@1996yankees1996]

This won't test for a bad transistor?

[@jeanedouar1971]

hi do you think I can use it for the motherboard testing in microsoldering ?

[@rickbran7541]

Mine just displaying Vext=0mV what might be a problem with this...

[@beedslolkuntus2070]

Is a pendalum clock going in the behind?

[@AndersEinarHilden]

You know, I didn't watch the video to understand how the transistor tester worked, but to understand how i assembled that bloody acrylic case that came with the tester.

[@muhsen61]

cannot test the zener diode

[@RandallDibble]

Frequency counter test?

[@powerr9090]

tanks bro👏

[@ozgemmo3445]

Great review - could you please tell me who you purchased your tester from? There are quite a number of very similar lookalikes on eBay and virtually all that I looked at did not come with the user manual. Cheers

[@englishrupe01]

You probably have found one by now, but if you Google M328 tester you will find several from 80 pages to a single page! Here is the link to the one Schematix has from EEvblog: www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/?action=dlattach;attach=236653

[@englishrupe01]

Sorry, it was 128 pages, not 80! Here it is from the original German designer before it was stolen and copied by the Chinese: apuntes.eduardofilo.es/images/pages/ttester.pdf

[@doc1701]

​@@englishrupe01 It wasn't stolen - it was released freely by the (then) about 16 year old designer who didn't know about Open Source and has been copied/added to by many other designers over the years with his blessing. Check out his answer to Dave from EEVblog's post. His KZbin name is Coiltech: kzbin.info/www/bejne/bXPVZH9nd51jpdk

[@englishrupe01]

@@doc1701 I did not know that. However, did you read Dion Kunz's response "But you know that when you release software without a license, the implied license is actually proprietary. Any programmer knows that you should never use a software library which has no license since this would mean the author could make it commercially any time and sue you for using it illegally." ?

[@javii5326]

It says for the calibration to use a capacitor between 100nF and 20 microF, did u use a 100 microF and is it ok?

[@muhsen61]

over 100nf

[@tonysfun]

Can you tell me what you get when you go to MENU and CLICK on Show Data? What version is at the top? Mine, 2017: 1.12k and my 2018 1.13k Is your version 2019? Does anyone have 2019 version of this GM378 tester? Thank you.

[@matthewdavies2057]

Your next video should be which of the dozens of those small cheap component testers on eBay are the most accurate, latest firmware etc.

[@englishrupe01]

But wouldnt that mean he had to buy them all first? Oh, i get it now....you are offering to pay for all of them so he can test them...right?

[@matthewdavies2057]

@@englishrupe01 Not for you, asshat.

[@paulojulio100]

Boa noite meu amigo como monto essa caixinha

[@MrBobWareham]

how do you test SM parts?

[@florisvaldocampodoniofilho9164]

otima aula parabéns abraço.

[@groovejet33]

so it gives pin out etc, but does it tell you if component is good or not?

[@englishrupe01]

If it reads it then it means it is good. If not then it will say "unknown component".

[@Mario-ye9pt]

Very good.

[@irishguy200007]

So the esr test on this is poor?

[@aurthorthing7403]

'Amazing how those little computers can identify stuff. I have one of the simpler models without the PWM or voltage meter. Do you know what chip yours uses?

[@sasodoma]

It has an atmega328p

[@juergenschimmer960]

You may want to look at the original open Source Design of these Testers at www.mikrocontroller.net/articles/AVR_Transistortester#Introduction_.28English.29 ( English version , other language Versions also available).

[@charlesklein7232]

HAY, THANK YOU! i almost bought this junk! for $17 their are better testers out their and you should consider reviewing them. if your going to do this you will need to spend the money. an attitude like yours at 915 8.84H is not acceptable! their is a "DANIU™ LCR-TC1" which is different and i dont think its a signal noise genererater but for identifying parts at $17 the same price perhaps its a consideration.

[@bryanpatrick7272]

That's just great, somehow on ended up on this video wasting my time typing on how to put together Acrylic case shell together. Argh!

[@swainscheps]

Somehow I ordered the ‘kit’ - I was thinking I had ordered the finished product…caveat emptor…

[@rsattahip]

I ordered one of these from Aliexpress and it looks identical to that one except the menu is in Russian and illegible tp me.

[@lewisavinash1]

that same 9v energier battery leaked and destroyed my device

[@davemoore2972]

Pun 1... Pun 2.... Pun 3....

[@wolfgangboettcher3126]

Ich weiß steck und Wissen

[@blookoopa]

”Exactly what I needed.” " *ihgn.weismo.life* " ”Did it help you too?” 4:29 垃圾。 -Lord

[@capivaracapivara94]

Pra que servem essas entradas azuis