Re: ESR meter upgrades
vintage and solid-state arent 2 words you often hear together.
you mean 70's and 80's ?
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Re: ESR meter upgrades
Which ESR meter would you reccomend for testing caps in vintage solid state audio gear? Do i need LCR so i can measure at different frequencys?
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Re: ESR meter upgrades
yes,
lots of new features.
but the biggest thing was the circuit for power.
the original 8pin microcontroller seemed to not go into sleep-mode sometimes and was draining the battery
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Re: ESR meter upgrades
Thank's Stj have you found this better than the original.
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Re: ESR meter upgrades
i forgot to say,
you need to reprogram the 8 pin microcontroller that controls power, or replace it with a small circuitAttached Files
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Re: ESR meter upgrades
good - because the replacement software wont fit a 324
this is actually built for a 1284 but it should work i think
it expects a 20Mhz crystal
changed config files are included for viewingAttached Files
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Re: ESR meter upgrades
not seen those before,
the ones i refered to are all one colour.
i think the blue has splines on the shaft, the light green has the half-moon shaft type.
i call it that anyway
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Re: ESR meter upgrades
You can see a photo of the top of the encoder in my original build photo way back in this thread: https://www.badcaps.net/forum/attach...6&d=1468518476
Here is how the bottom looks, it is light green, this is what was delivered with the DIY kit...
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Re: ESR meter upgrades
was the encoder blue?
i buy the light green ones - they seem better quality
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Re: ESR meter upgrades
I compiled a new build of Karl-Heinz firmware from the new GIT repository a few days ago.
It works well on my GM328R, this time I only included a 20Mhz build.
I also replaced the encoder and that fixed the bad behavior I described earlier in the thread with Madires firmware.
I made a small post on eevblog about it if you're curious:
https://www.eevblog.com/forum/testge...41/#msg4259041Attached Files
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Re: ESR meter upgrades
lol - it shouldnt go directly into cal,
it should show a message and wait for confirmation with the button.
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Re: ESR meter upgrades
This is annoying:
I had a transistor that was shorted... stuck it in the avr transistortester...
Went into cal mode! What a pain...
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Re: ESR meter upgrades
Originally posted by Per Hansson View PostConsidering the title of the thread I didn't want Bop Parkers great ESR meter to feel left out!
So here it is with some nice new bright Lite-On LTS-5003AWC 7-segment LED's before and after
Original LED's:
Replacement LED's:
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Re: ESR meter upgrades
Originally posted by japlytic View PostThere is one thing ESR meters should have, which is Kelvin sensing (4-wire measurement capability), which keeps measurement errors to a minimum.
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Re: ESR meter upgrades
Curiosity... what's the word(and language) that the "U" comes from when the avrtransistortester displays voltage for Vf and Vbe? (It whimsically says Uf=0.700 or something for diodes, etc.)
I would have thought for an English port it should have V for Voltage. I guess this is a pet peeve that I need to change on my unit...
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Re: ESR meter upgrades
I should figure out how to upgrade mine... build my own fw, etc. Too bad the one I have does not have the pins ported out on a 2x3 or 2x5 Atmel 0.1" header
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