ESR meter upgrades

[Per Hansson]

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:

efuse:0xfc:m

Into:

efuse:0x04:m

And it should not give that warning any more.

[vinceroger69]

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.

[Per Hansson]

Re: ESR meter upgrades

I posted a build a few pages back:
https://www.badcaps.net/forum/showpo...&postcount=767

[vinceroger69]

Re: ESR meter upgrades

Thank you i missed that post somehow i will try it on my tester later.

[TEDDIBEAR]

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

[jondoe]

Re: ESR meter upgrades

Congrats, nice solder work, used a hot air station I take it?

[stj]

Re: ESR meter upgrades

16MHz increases accuracy, allows testing of crystals upto about 10MHz and reduces your battery life

[TEDDIBEAR]

Re: ESR meter upgrades

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

[Per Hansson]

Re: ESR meter upgrades

Great work TEDDIBEAR!
Glad you got it working

[TEDDIBEAR]

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

[turbochris]

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?

[stj]

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

[stj]

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

to do the crystal - just swap it.
the rotary encoder - search this thread from page1.

[pepe10000]

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

Maybe you are interested also read this post:

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

A greeting.

[vinceroger69]

Re: ESR meter upgrades

I posted a build a few pages back:
https://www.badcaps.net/forum/showpo...&postcount=767

what capacitor values do i need too calibrate the unit?as just checking i have the correct values here.

[jondoe]

Re: ESR meter upgrades

A polypropylene 220nf capacitor and something to jumper all three test points.

[vinceroger69]

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.

[jondoe]

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.

[vinceroger69]

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

[Per Hansson]

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

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.