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). [url]https://www.banggood.com/de/9-12V-DC-Simple-Transistor-Tester-Frequency-Meter-160x128-LCD-PWM-Square-Wave-Generator-LCR-Table-NPN-PNP-FET-Diode-Measurement-p-1334979.html?gpla=1&gmcCountry=DE&currency=EUR&createTmp=1&utm_source=googleshopping&utm_medium=cpc_bgs&utm_content=frank&utm_campaign=ssc-de-all-0302&ad_id=337428325641&gclid=Cj0KCQjwrIf3BRD1ARIsAMuugNuBrjmcR3uizLp2AAOwLTilNj0Ao7tHvAmTm19bWQ1qzp03ZDOeNG8aAoh0EALw_wcB&cur_warehouse=CN[/url]...

Re: ESR meter upgrades

A few days ago my Tester DIY Kit arrived. But without any documentation. Only the PCB and the parts.
My question is if someone with the same tester can take a picture of it without the LCD installed? That would help a lot.

And i want to ask if it is possible to protect the tester against a charged capacitor. Or better protect the tester in case i forget to discharged a capacitor.
That are the parts i got from ebay (the 16Mhz crystal is still in transit but the LM4040 is already here)
[ATTACH]143383[/ATTACH] [ATTACH]143384[/ATTACH]...

Re: ESR meter upgrades

Yes it is this one [url]http://www.ebay.de/itm/GM328-Transistor-Tester-DIY-Diode-Capacitance-ESR-Voltage-Frequency-Meter-PWM-F8-/182216143250?hash=item2a6cedb192:g:ENcAAOSw0fhXki5S[/url]Re: ESR meter upgrades<br /> <br />...0fhXki5S[/url]

Re: ESR meter upgrades

Thanks that would be nice!
And can you also help with the other chip. I think it was a 5V low dropout voltage regulator. But i can not find the chip at Conrad Elektronics. But maybe they have something similar that i can use.

Re: ESR meter upgrades

The Programmer has arrived. Now i am waiting for the Kit to arrive.
One question. Can someone check if i have found the right PMIC ([url]https://www.conrad.de/de/pmic-spannungsreferenz-texas-instruments-lm4040aiz-25nopb-shunt-fest-to-92-3-1014118.html?insert=62[/url]).
A friend works nearbuy this shop and can get it for me. So i do not have to pay for shipping.
There was a second chip to increase the battery runtime but i can not find it in this shop. And i do not have the knowledge to check for a chip with similar characteristics.
...

Re: ESR meter upgrades

Dam the ebay seller is not shipping to Germany. This should be the same if i am right.
[url]http://www.ebay.de/itm/GM328-Transistor-Tester-DIY-Diode-Capacitance-ESR-Voltage-Frequency-Meter-PWM-F8-/182216143250?hash=item2a6cedb192:g:ENcAAOSw0fhXki5S[/url]

And because RS is really pricy in Germany (more than 8€ for shipping) i want to ask if i can use this crystall. It is not a 10ppm.
[url]http://www.ebay.de/itm/272367597610[/url]

And because i can not find my old programmer (i used it to programm Atiny 13A chips...

Re: ESR meter upgrades



Which one would you recommend? Or is changing the crystall a solution?...

Re: New Members - please post your introductions here

Hi my name is Sven and i am from Germany. I have found this forum searching for information about the atmega328 ESR meter. I am interestet in building all kind of things and hope to find and share information to make this happen.