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Old 11-18-2017, 05:49 AM   #821
Per Hansson
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Default Re: ESR meter upgrades

Have you tried the firmware linked in this post? https://www.badcaps.net/forum/showpo...&postcount=795
Can you please post a picture of the grid pattern the meter shows for 2 seconds?

About the warning of the fuses: You can change:
Code:
efuse:0xfc:m
Into:
Code:
efuse:0x04:m
And it should not give that warning any more.
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Old 11-18-2017, 07:00 AM   #822
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Default Re: ESR meter upgrades

per hansson is there any recent firmware available for our testers? as i have the same tester as you use i did update mine too 16mhz crystal etc.
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Old 11-18-2017, 07:03 AM   #823
Per Hansson
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Default Re: ESR meter upgrades

I posted a build a few pages back:
https://www.badcaps.net/forum/showpo...&postcount=767
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Old 11-18-2017, 07:07 AM   #824
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Default Re: ESR meter upgrades

Thank you i missed that post somehow i will try it on my tester later.
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Old 11-18-2017, 11:07 AM   #825
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Default Re: ESR meter upgrades

Thank you all for your time and help.would not have got this far without it.
Update,
I decided to bite the bullet after multiple writing and erasing the chip think I tried every avrdude file I could, I fitted a new atmega 328p au smd chip and eureka it took the first firmware download,and this is the result. so may have a playround upgrading now it is working, what does the 16mhz upgrade achieve?
John
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Old 11-18-2017, 12:41 PM   #826
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Default Re: ESR meter upgrades

Congrats, nice solder work, used a hot air station I take it?
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Old 11-18-2017, 03:05 PM   #827
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Default Re: ESR meter upgrades

16MHz increases accuracy, allows testing of crystals upto about 10MHz and reduces your battery life
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Old 11-18-2017, 05:06 PM   #828
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Default Re: ESR meter upgrades

Quote:
Originally Posted by jondoe View Post
Congrats, nice solder work, used a hot air station I take it?
Yes you are spot on (hot air soldering) have been in the trade over 50 years so soldering is not a problem. Its programing I have problems with, but with help from all of you on this Forum I got a result, many thanks.
John
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Old 11-19-2017, 09:49 AM   #829
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Default Re: ESR meter upgrades

Great work TEDDIBEAR!
Glad you got it working
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Old 11-21-2017, 06:03 PM   #830
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Default Re: ESR meter upgrades

Now that it is up and running what would I need to adapt this LCR T4 to work with a rotary encoder & 16mhz crystal, if it is possible with this model. if so what firmware would I need.
John
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Old 11-21-2017, 09:00 PM   #831
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Default Re: ESR meter upgrades

QUESTION!- I have a few lipo cells with protection circuits and some of these micro USB charge controllers with 9 volt boost converters built in. I have the newest AY-AT PCB based tester. I'm going to put the lipo and charge controller/boost converter on it. How can I run the vbat signal that goes to R1 directly to my battery so i can see battery actual battery voltage and not the converter output voltage? Would I need to add another transistor like T1 between the battery and sense circuit to keep the voltage divider on the sense circuit from killing the battery?
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Old 11-21-2017, 10:31 PM   #832
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Default Re: ESR meter upgrades

just connect ubat to the battery.
btw, i recommend using 2 in series rather than a boost converter.
some people have had problems with noise from the booster getting into the cpu
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Old 11-21-2017, 10:31 PM   #833
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Default Re: ESR meter upgrades

Quote:
Originally Posted by TEDDIBEAR View Post
Now that it is up and running what would I need to adapt this LCR T4 to work with a rotary encoder & 16mhz crystal, if it is possible with this model. if so what firmware would I need.
John
to do the crystal - just swap it.
the rotary encoder - search this thread from page1.
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Old 11-22-2017, 12:25 AM   #834
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Default Re: ESR meter upgrades

Quote:
Originally Posted by TEDDIBEAR View Post
Now that it is up and running what would I need to adapt this LCR T4 to work with a rotary encoder & 16mhz crystal, if it is possible with this model. if so what firmware would I need.
John
Maybe you are interested also read this post:

https://www.eevblog.com/forum/testge...19/#msg1090619

A greeting.

Last edited by pepe10000; 11-22-2017 at 12:27 AM..
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Old 11-22-2017, 06:08 AM   #835
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Default Re: ESR meter upgrades

Quote:
Originally Posted by Per Hansson View Post
what capacitor values do i need too calibrate the unit?as just checking i have the correct values here.
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Old 11-22-2017, 06:32 AM   #836
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Default Re: ESR meter upgrades

A polypropylene 220nf capacitor and something to jumper all three test points.
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Old 11-22-2017, 06:37 AM   #837
vinceroger69
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Default Re: ESR meter upgrades

after joining the three leads its now asking for two values 100nf and a 1pf im just trying to find new ones.
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Old 11-22-2017, 06:46 AM   #838
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Default Re: ESR meter upgrades

I guess some models vary in requirement!

Just checked mine, it asks for >100nf so I suppose 220nf is good enough.

Last edited by jondoe; 11-22-2017 at 06:50 AM..
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Old 11-22-2017, 07:26 AM   #839
vinceroger69
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Default Re: ESR meter upgrades

All sorted i read it wrong, it was just 1 100nf capacitor for calibration so im using this firmware now on my 1 mhz tester and stj version on my 8 mhz tester
https://www.badcaps.net/forum/showpo...&postcount=767

Last edited by vinceroger69; 11-22-2017 at 08:08 AM..
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Old 11-22-2017, 01:04 PM   #840
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Default Re: ESR meter upgrades

Quote:
Originally Posted by TEDDIBEAR View Post
Now that it is up and running what would I need to adapt this LCR T4 to work with a rotary encoder & 16mhz crystal, if it is possible with this model. if so what firmware would I need.
John
Quote:
Originally Posted by stj View Post
to do the crystal - just swap it.
the rotary encoder - search this thread from page1.
He needs to change the firmware too: If not it will read capacitance 2x out for example.
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