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Author Topic: $20 LCR ESR Transistor checker project  (Read 5223355 times)

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Offline acerquax

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Re: $20 LCR ESR Transistor checker project
« Reply #8900 on: October 19, 2023, 10:53:25 am »
 :palm:...oh man,
......after some trial and error attempts I noticed that in the battery?-modus
and
3 times pushing the start button
a select menue appears..afterwards one time pushing I can chance the issue
so I guess it works now!
Many thx for your patient indman :clap:
My next idea .....I will study your schematics , maybe I adapt an encoder switch or something like that. 

 :-+ :-+

P.S.: I let the diode assembly as it is?!!
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Offline indman

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Re: $20 LCR ESR Transistor checker project
« Reply #8901 on: October 19, 2023, 11:17:48 am »
Quote from: acerquax on October 19, 2023, 10:53:25 am
:palm:...oh man,
......after some trial and error attempts I noticed that in the battery?-modus
and
3 times pushing the start button
P.S.: I let the diode assembly as it is?!!

To be honest, I didn’t understand anything from your last message? Could you explain in a simpler way after what actions did your tester start working?
I don’t understand why you need to press the Test button 3 times? Have you read the madires manual on how to work correctly with m-firmware?
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Offline acerquax

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Re: $20 LCR ESR Transistor checker project
« Reply #8902 on: October 20, 2023, 03:44:51 pm »
Where do I find the manual? Thx

I guess a small video would be better than 1000 words!!  ;D
« Last Edit: October 20, 2023, 03:46:57 pm by acerquax »
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Offline madires

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Re: $20 LCR ESR Transistor checker project
« Reply #8903 on: October 20, 2023, 04:12:27 pm »
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Online Messtechniker

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Re: $20 LCR ESR Transistor checker project
« Reply #8904 on: October 20, 2023, 04:38:05 pm »
Quote from: acerquax on October 20, 2023, 03:44:51 pm
Where do I find the manual? Thx

I guess a small video would be better than 1000 words!!  ;D

Not in this specific case.
This is one of the best - if not the best - manual I have ever seen.
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Offline indman

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Re: $20 LCR ESR Transistor checker project
« Reply #8905 on: October 20, 2023, 04:44:22 pm »
Quote from: Messtechniker on October 20, 2023, 04:38:05 pm
Not in this specific case.
This is one of the best - if not the best - manual I have ever seen.
You're a little ahead of me! These are the words I wanted adress to acerquax :)
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Offline acerquax

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Re: $20 LCR ESR Transistor checker project
« Reply #8906 on: October 21, 2023, 03:06:19 pm »
Hi mates,

So,  I have to realize, that the tester doesn't detect any DUT neither transistors nor any other device
after switching on the tester and>>> Testing.... appears.
 It swings after a short periode of further time to>>>Battery?
I have read the manuals and could find out that  all other features specified in the manuals are working!! :-+
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Offline madires

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Re: $20 LCR ESR Transistor checker project
« Reply #8907 on: October 22, 2023, 10:02:59 am »
Quote from: acerquax on October 21, 2023, 03:06:19 pm
It swings after a short periode of further time to>>>Battery?

Have you tried with the SRV05-4 removed?
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Offline acerquax

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Re: $20 LCR ESR Transistor checker project
« Reply #8908 on: October 22, 2023, 03:38:29 pm »
 :palm:
Oh.......... I had no schematic beside me , so DZ2 and SRV05-4 means the same... :-DD |O
I will give this a try..  ::)
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Offline acerquax

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Re: $20 LCR ESR Transistor checker project
« Reply #8909 on: October 22, 2023, 09:09:39 pm »
 It works perfect now....thx a lot mates :-+ :-+ :-+ :clap:
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Offline acerquax

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Re: $20 LCR ESR Transistor checker project
« Reply #8910 on: October 26, 2023, 06:02:34 am »
Hi,
what is the difference between "k" and "m" versions for the tester sw?
Where could I find the latest hex/eep versions for the t7 tester? Is it the 1.43m version?
Thx for ideas.

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Offline indman

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Re: $20 LCR ESR Transistor checker project
« Reply #8911 on: October 26, 2023, 07:09:38 am »
Quote from: acerquax on October 26, 2023, 06:02:34 am
Hi,
what is the difference between "k" and "m" versions for the tester sw?
Where could I find the latest hex/eep versions for the t7 tester?

You probably didn't read the Madires manual carefully?
It details the main differences between m-firmware and k-firmware.
Also in this manual there are links to sources where you can find the materials and firmware you need.
The best way to get the version you want is to build the firmware yourself, so you can customize the options you like and need. All it takes is some effort to learn how to compile. Even a child can do it. ;)
« Last Edit: October 26, 2023, 07:25:40 am by indman »
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Offline Calambres

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Re: $20 LCR ESR Transistor checker project
« Reply #8912 on: October 26, 2023, 03:02:57 pm »
Anyone know of a source to buy a legit Atmel tester in the form of a T1, T2, T7... I like the convenience of the package but have never found one that's not fake, and I've opened quite a few!
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Offline xfint34

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Re: $20 LCR ESR Transistor checker project
« Reply #8913 on: October 26, 2023, 08:20:43 pm »
What about the GM328A DIP version with the acrylic case?
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Offline Calambres

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Re: $20 LCR ESR Transistor checker project
« Reply #8914 on: October 27, 2023, 04:50:05 am »
Well, my request was:

Quote from: Calambres on October 26, 2023, 03:02:57 pm
Anyone know of a source to buy a legit Atmel tester in the form of a T1, T2, T7... I like the convenience of the package...

The GM328A DIP version with the acrylic case is not what i'm looking for...
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Offline luciano

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Re: $20 LCR ESR Transistor checker project
« Reply #8915 on: October 27, 2023, 04:48:39 pm »
Hello, what are the problems if I have a tester with a fake (or not Atmega) CPU ? Do they work not good ? Or there is no bad effect ?
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Offline madires

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Re: $20 LCR ESR Transistor checker project
« Reply #8916 on: October 27, 2023, 05:40:12 pm »
You can't program an OSHW firmware and some measurements are subpar.

Edit: Some also lack the self-adjustment.
« Last Edit: October 28, 2023, 11:12:53 am by madires »
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Offline Fuzzy Star

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Re: $20 LCR ESR Transistor checker project
« Reply #8917 on: October 28, 2023, 09:22:44 am »
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Online Aldo22

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Re: $20 LCR ESR Transistor checker project
« Reply #8918 on: October 28, 2023, 09:54:32 am »
Quote from: luciano on October 27, 2023, 04:48:39 pm
Hello, what are the problems if I have a tester with a fake (or not Atmega) CPU ? Do they work not good ? Or there is no bad effect ?

I have a TC1 with the APT32F172K8T6 and it works quite OK for most components.
Here I had made some tests.
You can find it 2 posts below this link target (Reply #8323):

For some reason the actual link target is not working.
« Last Edit: October 28, 2023, 09:58:01 am by Aldo22 »
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Online Aldo22

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Re: $20 LCR ESR Transistor checker project
« Reply #8919 on: October 28, 2023, 04:07:27 pm »
Quote from: indman on October 28, 2023, 04:03:19 pm
Aldo22 Because you misspelled the post number in your link. It should look like this  ;)
https://www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/msg4765046/#msg4765046
I intentionally took another target because the direct link (yours too) just doesn't work (at least not for me).
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Offline indman

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Re: $20 LCR ESR Transistor checker project
« Reply #8920 on: October 28, 2023, 04:13:53 pm »
Yes, that's right, there was some kind of glitch in the messaging system. I've noticed this before.
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Offline mentholflash

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Re: $20 LCR ESR Transistor checker project
« Reply #8921 on: October 30, 2023, 06:37:46 am »
Hi all
I have one of the original clones ver 2.2 2012/11/26 atmega128 the same as pic 1 but i have the 2 caps between the lcd headers and a 8m crystal like a mashup of the 2 pics
I am looking to upgrade as much as possible
I have installed an atmega328(duino lilypad) and bought a rotary encoder
I also want to check in circuit esr
Can anyone point me in the direction of upgrade steps with adding encoder and the best firmware to use and steps to be taken
Thanks look forward to your replies
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Offline indman

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Re: $20 LCR ESR Transistor checker project
« Reply #8922 on: October 30, 2023, 07:45:20 am »
mentholflash, I have attached the firmware for your clone below. You will find the encoder connection and programming flash method in the complete manual from Karl-Heinz.
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Offline mentholflash

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Re: $20 LCR ESR Transistor checker project
« Reply #8923 on: October 30, 2023, 08:27:00 am »
Thank you for your speedy responce
I did read the encoder part but pd1 and pd3 are not connected at my lcd is it best to just solder to the ic or is there a better way to solder connections.
Thanks again
ps also looking to get a different screen would you know which is best for this device and would it benefit me to put a 1200 crystal just cause i have 1
cheers
« Last Edit: October 30, 2023, 08:28:39 am by mentholflash »
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Offline indman

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Re: $20 LCR ESR Transistor checker project
« Reply #8924 on: October 30, 2023, 08:36:01 am »
Quote from: mentholflash on October 30, 2023, 08:27:00 am
I did read the encoder part but pd1 and pd3 are not connected at my lcd is it best to just solder to the ic or is there a better way to solder connections.
Solder to the ic.

Quote from: mentholflash on October 30, 2023, 08:27:00 am
ps also looking to get a different screen would you know which is best for this device and would it benefit me to put a 1200 crystal just cause i have 1.
You can connect to the device any display with a controller that is supported by the firmware authors, but you will also have to update the firmware for the new display. You can only put quartz from the 8,16,20 MHz range into a clone.
Other frequencies are not suitable! All this is explained in detail in the manual.
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