Author Topic: $20 ESR LCR Transistor NPN PNP Mosfet Meter  (Read 60318 times)

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Offline NikWing

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #50 on: March 12, 2014, 05:41:37 am »
hmm I see :o
I'm googling around and find a lot of circuits but can't tell which are best (as in most accurate, with correct working self-calibration, what parts to use exactly, etc)

I know this thread is about the transistor tester, though I look for a perfect way to measure coils, caps, ESR, very small resistors and crystals ^^
 

Offline neslekkim

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #51 on: March 12, 2014, 07:13:35 am »
Why color?, why not have goon connectivity to an computer?

Recreating an curvetracer (faster than DCA75) would have been something..
 

Offline uwezi

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #52 on: March 12, 2014, 08:31:37 am »
Recreating an curvetracer (faster than DCA75) would have been something..

...still thinking about that...
 

Offline NikWing

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #53 on: March 14, 2014, 05:24:37 am »
color is not needed but looks niiiiiiice ;)
you know, making these things has to do with having fun, so why not making it look a little more interesting ;)

pc should already be possible with the ft232 :)
 

Offline caladeira

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #54 on: April 08, 2014, 05:16:19 am »
Hi all.

I've recently discovered this circuit and I'm planing to make one.
I have it already working on a breadboard!

On Post 18 of this thread, I read that 3V is too low for testing most of the components.
However, in the /Software/trunk, I found one make file in a folder "mega328_3.3V".
Is there any version with the atmega running at 3.3v?

I might be interested in this version because I'm thinking in using a 3.3v graphical LCD like the very popular found in the Nokia 3310.
This LCD is cheap, has 6 lines and can do graphics more easily.

Thanks in advance.
 

Offline madires

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #55 on: April 08, 2014, 06:15:20 am »
The firmware only supports text based LCD modules at the moment. If you like to use a graphics display you would have to rewrite the display functions and adapt the component output, menus and self-adjustment.
 

Offline caladeira

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #56 on: April 08, 2014, 08:31:13 am »
Hi Markus, thank you for the prompt reply.

What about the possibility of the tester work at 3.3V?
Is it possible without reduced functionality?

I've been looking into the code and the most difficult part of adapting a different sized display is the fact that it was written mainly to the 16x2 or 16x4 format.

With the display I have mentioned (based on the PCD8544), it's very easy to get 14x6 characters.
Of course it will take some extra program space, but with atmega 328, I don't think it will be a problem.

What if we create some middle level functions that will be between the main program code and the low level display functions.
Depending of the display type defined in the makefile, this set of functions will adapt the output accordingly.

As long as the display need only 6 data pins, the hardware could continue to be the same.
You only have to choose which type of display at compile time, all the rest should be automatic.

What do you think about it?
 

Offline madires

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #57 on: April 08, 2014, 08:49:20 am »
What about the possibility of the tester work at 3.3V?
Is it possible without reduced functionality?

I think, with 3.3V you will lose most FETs, SCRs & TRIACs and some measurement ranges will be also reduced.
« Last Edit: April 09, 2014, 07:59:27 am by madires »
 

Offline caladeira

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #58 on: April 09, 2014, 07:34:18 am »
Thank you for your replies, Markus.
 

Offline yack33

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« Last Edit: June 12, 2014, 12:13:44 am by yack33 »
 

Offline madires

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #60 on: June 12, 2014, 12:19:41 am »
A new circuit just released the 28/03/14, he seems to have the latest features.

It's just the basic circuit without hardware options. To get the latest firmware please download it at http://www.mikrocontroller.net/svnbrowser/transistortester/Software/ ('trunk' for Karl-Heinz' current version under development or 'Markus' for my version) and update your tester.
 

Offline LektroiD

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #61 on: October 13, 2014, 01:02:37 am »
Do any of these testers measure Vbe of transistors?

I have a DCA55, which does it, but the resolution isn't high enough to make matched pairs
 

Offline madires

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #62 on: October 14, 2014, 05:50:34 am »
Do any of these testers measure Vbe of transistors?

Both firmwares (k & m) measure Vbe.
 

Offline con-f-use

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #63 on: October 14, 2014, 05:30:15 pm »
Why are there two threads with almost the exact same same? I am con-f-used.
 

Offline madires

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #64 on: October 14, 2014, 10:04:42 pm »
Why are there two threads with almost the exact same same? I am con-f-used.

It's a popular topic  ;)

BTW, v1.16m was released two weeks days ago. Got some minor improvements and a check for rotary encoders incl. pinout detection.
« Last Edit: October 14, 2014, 10:08:56 pm by madires »
 

Offline LektroiD

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #65 on: October 31, 2014, 02:33:37 am »
Do any of these testers measure Vbe of transistors?

Both firmwares (k & m) measure Vbe.

Cool, I bought a couple of these meters, one with the large LCD and the standard 2 line model.

I can't see any measurement for Vbe though, only Hfe.

How do I flash the firmware on these machines, there seems to be no way to send data to them?
 

Offline madires

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #66 on: October 31, 2014, 04:12:17 am »
Cool, I bought a couple of these meters, one with the large LCD and the standard 2 line model.
I can't see any measurement for Vbe though, only Hfe.

Must be a quite old firmware version.

Quote
How do I flash the firmware on these machines, there seems to be no way to send data to them?

Download the current k firmware at http://www.mikrocontroller.net/svnbrowser/transistortester/Software/trunk/ (click "
Download GNU tarball"), edit the Makefile (take a sample one from one of the subdirs) and "make". Get an ISP programmer and flash the ATmega. Your testers might need an ISP header.
 

Offline LektroiD

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #67 on: November 02, 2014, 01:03:07 pm »
Cool, I bought a couple of these meters, one with the large LCD and the standard 2 line model.
I can't see any measurement for Vbe though, only Hfe.

Must be a quite old firmware version.

Quote
How do I flash the firmware on these machines, there seems to be no way to send data to them?

Download the current k firmware at http://www.mikrocontroller.net/svnbrowser/transistortester/Software/trunk/ (click "
Download GNU tarball"), edit the Makefile (take a sample one from one of the subdirs) and "make". Get an ISP programmer and flash the ATmega. Your testers might need an ISP header.

None of the meters have headers, although it appears I can solder in a header myself. One of the meters has a space for a 2x3 0.1 header, and the other a standard 2x5 0.1 header. Only problem is I have no idea which orientation they should be, or which side of the board I should solder the headers. I notice there are 4 pins at one side of the 2x5 header which all go to ground though, so that should help if I can get a pin out diagram.

Also, would this interface work ok:
www.ebay.co.uk/itm/271475220093
 

Offline madires

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #68 on: November 03, 2014, 02:23:54 am »
None of the meters have headers, although it appears I can solder in a header myself. One of the meters has a space for a 2x3 0.1 header, and the other a standard 2x5 0.1 header. Only problem is I have no idea which orientation they should be, or which side of the board I should solder the headers. I notice there are 4 pins at one side of the 2x5 header which all go to ground though, so that should help if I can get a pin out diagram.

There are two standard headers for ISP, either 6 pin or 10 pin. You'll find the originial circuit with the 6 pin ISP at  http://www.mikrocontroller.net/svnbrowser/transistortester/Doku/tags/english/ (click "Download GNU tarball"). And with some google-foo you'll also find the pinout for the 10 pin header, e.g. http://www.batsocks.co.uk/readme/isp_headers.htm  ;) Simply trace Vcc or Gnd to figure out the orientation.

Also, would this interface work ok:
www.ebay.co.uk/itm/271475220093

If that one works with avrdude or another software, it should be fine. Just needs also an adapter cable for the 6 pin ISP header.
 

Offline panoss

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #69 on: March 25, 2018, 12:06:02 am »
Hi guys.
I 'm trying to compile the ComponentTester-trendy-1.26m at Atmel Studio 7.
(code is downloaded from here)
I created a new Solution (I think a 'Solution' is a container of projects) based on ATMega328P.
I replaced the atomatically created code at main.c with the code of main.c at ComponentTester-trendy-1.26m.
I copied all the files (except for the main.c (as I had copied the code)) from ComponentTester-trendy-1.26m folder to my project's folder.
I tried Build->Build Solution, but I get errors (33 of them), the first of which is:
Quote
Error      'R_MCU_HIGH' undeclared (first use in this function)   GccApplication2   c:\Users\Panagiotis\Documents\Atmel Studio\7.0\GccApplication2\GccApplication2\adjust.c   45

I didn't want to change the code, So I left everything as is.
Why do I get errors?

(I 've read the README file, but didn't help me)


« Last Edit: March 25, 2018, 12:12:42 am by panoss »
 

Offline madires

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #70 on: March 25, 2018, 01:47:11 am »
IDE quirks. IIRC, there's a checkbox for using an external Makefile. BTW, the current m-firmware is 1.32m.
 

Offline panoss

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #71 on: March 25, 2018, 02:15:13 am »
So, you 're saying I should use an external makefile?
I should make it by my self?
(as you understand, I 'm almost totally new to mcu programming)
 

Offline madires

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #72 on: March 25, 2018, 02:30:28 am »
The source includes a Makefile which should be used.
 
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Offline panoss

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #73 on: March 25, 2018, 04:27:04 am »
I used the makefile included in the source code and it compiled!
(I had tried this before but it had failed, I don't know why)
Thanks.

But now I have another problem related to the hardware.
I downloaded from here (I clicked on 'Download GNU tarball').
So, which is the hardware that suits to the software? (ComponentTester-trendy-1.26m)
Is it the '...\transistortester-Hardware\Hardware\Markus\ComponentTester-HW-1.00m\ComponentTester-HW-1.00m'?

(I see in the schematic the ATMega8/88/168 is being used and not the ATMega328P!!!! (REV 1.00, DATE: 3/11/13 3:56PM))
« Last Edit: March 25, 2018, 04:47:33 am by panoss »
 

Offline panoss

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Re: $20 ESR LCR Transistor NPN PNP Mosfet Meter
« Reply #74 on: March 25, 2018, 08:27:13 pm »
I suppose it also works for ATMega328P (according to this pdf), right?
« Last Edit: March 25, 2018, 08:29:45 pm by panoss »
 


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