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VapingBad

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Reply with quote  #16 
Quote:
Originally Posted by dwcraig1
Well except I used EScribe 1.0.56 to roll it back to the 02/23 FW.
This came from Evolv's DNA75 page.

Good to know [thumb]

I wasn't sure if that had been updated to fix that, I had to one mine with 2-23 to do a A to B compare in for the beta program and 1.0.56 was not out then.

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Latest versions of EScribe: DNA 200/250DNA 75
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dwcraig1

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Reply with quote  #17 
I'll only go with the 200 FW when it's "suggested" to try it next time.
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MikeTheVapeDude

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Reply with quote  #18 
What do you mean the 4-25 was 'bricking devices'?
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Ghostrider

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Reply with quote  #19 
Quote:
Originally Posted by mikepetro
If you run this 1.0.49 FW (dated 4/25/16) and your DNA200 dies, dont say you weren't warned!!!!

If you are running it, I would recommend rolling back to a previous version!


I have rolled back both of mine thanks for the advice.
MikeTheVapeDude

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Reply with quote  #20 
Now that I've rolled back my device started asking 'New Coil?' again (it previously had stopped) and now the resistance will change from .50 to .51, .52, .49 when vaping like it used to. I know even kanthal changes resistance minutely when heated and cooled rapidly and the DNA's ohm reader is very accurate, just strange how it had stopped even prior to 4-25 but now has started back. Should I be worried? Could 4-25 have done damage to my board even though I rolled back?
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mikepetro

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Reply with quote  #21 
Extremely doubtful.
MikeTheVapeDude

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Reply with quote  #22 
So why would my mod keep the stagnant input resistance of the coil before but now it goes up slightly when vaping? I know that's normal, when a wire is heated its resistance goes up no matter what the TCR rating of it is, just, why didn't it before? I'm talking pre 4-25.
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mikepetro

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Reply with quote  #23 
Dunno, perhaps someone else has an idea.
MikeTheVapeDude

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Reply with quote  #24 
I don't remember if the DNA200 ever fluctuated when vaping on Kanthal before. It's been so long. Does yours? I know this is normal, but the fact it didn't then and is now worries me. On kanthal vapes does your resistance reading change in terms of like going from .42 to .44, etc? As I said I know this is normal, but it's never done this before that I remember. Usually it just displayed cold ohms on the reader.
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mikepetro

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Reply with quote  #25 
I dont know, I dont burn kanthal, only TI.
MikeTheVapeDude

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Reply with quote  #26 
Nevermind my ground wire was loose, just had to solder it up.
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BillW50

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Reply with quote  #27 
Using steam-engine.org/wirewiz.asp, I entered in values that gave me a 0.5 ohm Kanthal coil. And having a resistance of 0.5 at room temperature and heating it to 800ºF the live resistance would be 0.5068 ohm. At 482ºF it would be 0.5011 ohm.
MikeTheVapeDude

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Reply with quote  #28 
My concern was the DNA was doing something now it wasn't doing before. I'm vastly aware of temperature effects on wires, I'm an associate's level electrical engineer, with the 4-25 fiasco it worried me. Turns out my 510 ground was loose and needed a resolder. Thanks guys.
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BillW50

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Reply with quote  #29 
Yes I know you are vastly aware of temperature effects on wires. But I was just showing you by how much. A Kanthal at that resistance, you might see a change from 0.50 to 0.49 or 0.51 ohm if it was right on the edge of changing anyway. But you won't see anything else more drastic.
VapingBad

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Reply with quote  #30 
I think fiasco is way over the top, it was never recommended for DNA 200s and was only available for a few hours as part of a DNA 75 download.  If people just stuck to what Evolv posts in the Early FW thread, IE official releases for the DNA 200 then nobody would had a concern.  Your device has not been adversely affected by it MikeTheVapeDude and if it was Evolv would have replaced the board so IMO not a fiasco, maybe a slip would be a more realistic word.
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Latest versions of EScribe: DNA 200/250DNA 75
Common problems
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