ESR meter upgrades

[redwire]

Re: ESR meter upgrades

I found the firmware does not detect PNP germanium transistors. They get reported as a diode.
Another 328 tester (2x20 LCD) I built with Karl-Heinz Kübbeler firmware does work and tests the transistors OK.

This is on AY-AT/ST7735 20MHz xtal with SVN810 STJ.

[Per Hansson]

Re: ESR meter upgrades

https://yadi.sk/d/yW8xa5NJgUo5z

Inside folder: M328KIT+TFT
You can there find Firmware in original.
But also both Madires (M-Firmware) and Karl-Heinz Kübbeler (K-Firmware)
Note that the "original" firmware is of course the K-firmware with some changes by the Chinese, but not releasing the source code

If you prefer to build the firmware from source here is the SVN repo:
The latest K-firmware: https://www.mikrocontroller.net/svnb...oftware/trunk/
The latest M-firmware: https://www.mikrocontroller.net/svnb...ftware/Markus/

EDIT: You also cross-posted here and got a reply already from Madires:
https://www.eevblog.com/forum/testge...16/#msg3119216

[snapper1234]

Re: ESR meter upgrades

which one is to be recommended that comes near to the original?
where can i download it?

[stj]

Re: ESR meter upgrades

why original?
we have newer ones on this forum if you search - i know because i built and posted them!

[snapper1234]

Re: ESR meter upgrades

Hello
search (original) working HEX/EEP files and Fuse settings for the GM328 (AY-AT)
Transistor Tester (from Banggood) because my Atmega is broken.
The original seems to be protected against reading :-(
TX7014DH is on the Display,
thanks for a feedback

[stj]

Re: ESR meter upgrades

pretty much all of the atmel based component testers - they all use the same software

[sam_sam_sam]

Re: ESR meter upgrades

yes, blue and other similar bob-barker based designs wont show leakage.

Which ones would show you leakage that are worth a crap
Please show website links thanks

[stj]

Re: ESR meter upgrades

yes, blue and other similar bob-barker based designs wont show leakage.

[sam_sam_sam]

Re: ESR meter upgrades

Is a better ESR meter than the blue meter that I have now

I am not really looking for a component tester at this point

[stj]

Re: ESR meter upgrades

if you want to build one, start here:
https://www.mikrocontroller.net/svnb...nsistortester/

but arm based chips wont work, they only have 3.3v outputs - you need 5v

[Per Hansson]

Re: ESR meter upgrades

The idea behind the "transistor tester" project is to make something with as few external components as possible perform the required job.
In the case of the tester this relies on a 5v compatible ADC.
The STM32 is much more expensive, and also a 3.3v device.
I'm not saying it can't be done: of course it can, but it takes the project in a different direction than what the authors intended.

As for the "latest tester" or "best tester" this rotinely comes up over at the long eevblog thread.
I think the M644 based version I linked in my previous post above hits a good balance of cost vs features.
But it of course depends on what features you want, there is for example the BSIDE version that I have too, in a quite nice case.
But it uses the regular Atmega 328 controller instead.

[Jatsekku]

Re: ESR meter upgrades

Hi guys! Could someone point me out the newest version of tester (hardware and software as well)? Maybe the newest is not a good term, I think most advanced version will be better description.
I would like to develop new version based on STM32, but there is so many version as far that I don't even know which one I should treat as reference for my design.

[TheOnlyDocc]

Re: ESR meter upgrades

I hope you can help me. I am searching for a new Tester. After moving to a new location i can not find my old gm-328 (modded with new quarz. . . .).
I am not planing to mod the new one. But i was checking what is available out there and found a version with PWM Generator (would be helpfull when working with leds /modding led circuits). https://www.banggood.com/de/9-12V-DC...r_warehouse=CN
But the version i found on Banggood seems to have some problems (comment from the reviews:firmware don't fit with the resistors divider/The software came as version 1.13k but there are much newer versions available

[stj]

Re: ESR meter upgrades

i looked at that one before, on banggood.

not bad but no colour display.
i want colour display because it has better contrast and a noticably higher resolution.

[Per Hansson]

Re: ESR meter upgrades

The M644 based one is nice if you want to have a full-featured model.
I have bought one and really like it, I have not tinkered with the firmware on it though.
Vince linked this one a page back, I bought mine on eBay but that auction does not exist anymore...

https://www.aliexpress.com/item/M644...912063006.html

[stj]

Re: ESR meter upgrades

the same as any other, 2.
but they are shared with the other things anyway - pincount is not the issue - size of the flash is.
all the cheap testers have 32k, we want more than that.
now here is the issue, most testers use the atmega328p and that has 32pins.
we cant get a better chip with that pincount.

the tc1 is different - it uses the atmega324 and that has 44pins.
we can get 64k chips in that package.

[lotec25]

Re: ESR meter upgrades

How many pins does the rotary encoder need for the TC1?

[stj]

Re: ESR meter upgrades

hard to say right now.
i'm personally leaning towards the TC1 because it can take a bigger mcu,
now just to get it up to current standards it will need a rotary encoder and a new voltage reference (LM4040) just to start.

but as a base, it's nice - fully cased with a colour display and lithium battery inside.
there is lots of pictures and stuff here:
https://yadi.sk/d/yW8xa5NJgUo5z

[lotec25]

Re: ESR meter upgrades

stj,
I would like one to upgrade and mess around with. Can you recommend one? and a link to what parts i should look for?

[stj]

Re: ESR meter upgrades

that question depends on if you want to just use it,
or if you intend to do upgrades & stuff.