$20 LCR ESR Transistor checker project

[madires]

Some news about the upcoming IR check feature in the m-firmware. I've managed to add support for multi frame/packet protocols too. So far, following protocols are supported:
  - JVC
  - Kaseikyo (aka Japanese Code, 48 bit)
  - Matsushita/Emerson
  - Motorola
  - NEC (standard & extended)
  - RC-5 (standard)
  - Samsung (32 bit Toshiba)
  - Sharp
  - Sony SIRC (12, 15 & 20 bit)

And for testing I've confiscated the RCs of three neighbours. One was actually quite happy about that because he thought one of his RCs was broken.

Any more wishes for protocols?

[hapless]

Sounds cool. I don't have any specific requests at the time, but...

Ever heard of the HiFi Remote website?

http://hifi-rem.ipower.com/jp1/lookup/

Take your pick, it lists quite a few protocols, including some rare ones.

[madires]

Sounds cool. I don't have any specific requests at the time, but...

Ever heard of the HiFi Remote website?

http://hifi-rem.ipower.com/jp1/lookup/

Take your pick, it lists quite a few protocols, including some rare ones.

Yup, I've stumbled about that one too http://www.hifi-remote.com/wiki/index.php?title=DecodeIR has a nice list. Also http://www.mikrocontroller.net/articles/IRMP and http://www.sbprojects.com/knowledge/ir/index.php . And there's http://lirc.sourceforge.net/remotes/ for individual RCs. I've also found a two part Elektor article (from 2001) about IR RC protocols.

Something which bothers me a little bit is that some protocols are actually identical besides a few µs difference in pulse/pause timing, but the start pulses (AGC burst) are far off. Could be caused by different carrier frequencies. The timing of most protocols is based on the carrier frequency, which makes sense. You just need to have one oscillator and derive all timings/clocks from that one.

[hapless]

Yes, all sorts of "fun" with those... And then there's also the PT2262 chip. I was actually tempted to make an IR transmitter with it (since there is an IR version of it out there). You can find its datasheet at the bottom of this page:

http://www.enide.net/webcms/index.php?page=2262-2272-codec

[madires]

You'll find v1.20m in the repos. Happy flashing!

[casinada]

The transistor checker is now an oscilloscope   

http://www.ebay.com/itm/Multi-Tester-for-Resistance-Capacitance-Frequency-DDS-Generator-Oscilloscope-/331726001725?hash=item4d3c69163d:g:kE4AAOxypthRw~on


 

[hapless]

April jokes now? 

You'll find v1.20m in the repos. Happy flashing!

Didn't I post with a "thank you" yet? Well, thank you! And that's no joke.

[madires]

The transistor checker is now an oscilloscope   

http://www.ebay.com/itm/Multi-Tester-for-Resistance-Capacitance-Frequency-DDS-Generator-Oscilloscope-/331726001725?hash=item4d3c69163d:g:kE4AAOxypthRw~on

Nice find, but definitively no Transistor Tester. IIRC, someone already suggested a scope feature for the graphic LCD version of the tester  

[madires]

You'll find v1.20m in the repos. Happy flashing!

Didn't I post with a "thank you" yet? Well, thank you! And that's no joke.

You're welcome!

[wguibas]

HI, been following this thread and just updated to windows 10.  If I try to make file I get errors.  I read back about 20 pages ago about msys-1.0 possibly causing this?  I found the file in winavr/utils/bin directory what am I supposed to replace it with or do?



If I make the same directory on windows 7 I don't get the error.  I did get a hex file of 56K is that correct?

Thanks in advance for the help

[madires]

If I make the same directory on windows 7 I don't get the error.  I did get a hex file of 56K is that correct?

The filesize seems to be right, but I can't help you with the Win10 problem. Sorry! Win10 free zone

[casinada]

 wguibas,
Are you trying to run it as administrator?

[wguibas]

I tried administrator now , same errors.  Before I upgraded to windows 10 I copied the drive.  If I put the windows 7 drive in it works fine, no errors.

run under administrator prompt

[tom666]

@wguibas

Try this
The attached zip file contains a "MSYS-1.0.dll" that should be used to overwrite the original file that is located in the folder (for example) C:\WinAVR-20100110\utils\bin.

[wguibas]

Thank You Tom666, worked like a charm!!

[majsta]

Ok had hard time to program this thing:
Since I didn't have programmer I have decided to build myself one based on that schematics.
So like tom666 proposed on #939 I connected this device. For VCC I have used power from USB. But problem was PonyProg or At-prog were unable to detect properly Atmega328P. Then I tried AVRDude and that either didn't worked. I have selected ponyser but there was a problem device was not detected. So I looked at avrdude.conf and find out that in ponyser RESET was inverted for some reason?

reset = ~3;

so changing to:

reset = 3;

did the trick.
Now simply with AVRdudeGUI or in command line like:

avrdude -p ATMEGA328P -c ponyser -P COM1  -U flash:w:"C:\TransistorTester.hex":i

and then

avrdude -p ATMEGA328P -c ponyser -P COM1  -U eeprom:w:"C:\TransistorTester.eep":i

I hope that this could help someone. It is my first post here on this forum but I was reading a lot here lately, now was the time to write something



Update: Does this works for in-circuit testings of capacitors since I m getting some strange values with latest svn revision. Can someone please explain this to me. tnx

[avrank]

Please help me,
How to make measurements 10uh coil, can be displayed 30uH and not 0.03mH. Thanks.

[Messtechniker]

Please help me,
How to make measurements 10uh coil, can be displayed 30uH and not 0.03mH. Thanks.

Well, here goes:
1.) Do the full selftest with a 15 nF capacitor also at hand.
2.) Insert coil at 1 and 3.
3.) Insert 15 nF capacitor in parallel also at 1 and 3.
4.) Press the button.
5.) See what you get. See pic. enclosed

Yours - Messtechniker

[MatthewEveritt]

Not sure if anyone's pointed this out yet (search didn't show anything obvious), but I just noticed that you can use ground leads from scope probes as make-shift test clips.

I don't like to say how long the ZIF socket will last doing this, so use at your own risk, the clips are pretty chunky.

[timelessbeing]

I am getting ready to buy one of these AVR component testers. Does anybody who follows the Mikrocontroller topic know if there are any group buys happening? Perhaps an updated design, with the hardware extensions built-in. Unfortunately, I can't read German.

[retrolefty]

I am getting ready to buy one of these AVR component testers. Does anybody who follows the Mikrocontroller topic know if there are any group buys happening? Perhaps an updated design, with the hardware extensions built-in. Unfortunately, I can't read German.

 That would be useful. The only ones I come across are the completed Asian versions that lack full documentation of what they actually ship.

[timelessbeing]

There is a Chinese fellow, Zhq, over in the Mikrocontroller forum who has developed a very fancy tester. I hope he makes it available for sale. However, I suspect it would no longer fit in the "cheap" category.

[timelessbeing]

I searched online for a suitable device to buy, and this one seemed like the best option:
eBay item: 221952423890  seller: kiss_buyer  cost: 15.97 USD

Pros:

• socketed ATMega328
• 128x64 backlit graphical display with support standoffs
• Rotary encoder
• Square wave gen, PWM, frequency counter
• 8Mhz external crystal oscillator
• Very reasonable price
• Top-rated eBay seller

Cons:

• assembly required
• I don't see pads for programming the MCU in-place, which means I would need a socketed programmer like this one, right?

Did anybody else find any similar gems?

[bitseeker]

That's the one I got. It seemed to be the most feature-filled and the rotary encoder is much more friendly for accessing the menu. Although you have to assemble the kit, that also means you can verify the components or more easily make modifications (add test leads, use a different socket, make a custom enclosure, etc.).

[timelessbeing]

Thanks. How do you flash yours, bitseeker?