Just curious, how did you check the resistance while it was glowing? An separate ohm reader won't work with current flowing through the coil, and my DNA40 doesn't show real time resistance info, it only displays the base resistance.
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Just curious, how did you check the resistance while it was glowing? An separate ohm reader won't work with current flowing through the coil, and my DNA40 doesn't show real time resistance info, it only displays the base resistance.
It does reset the base resistance after it sleeps, however, by that point typically the atty and mod will be at the same temp anyway... If you're outside and it reads the resistance as .02 ohms lower than at room temperature it ALSO knows that it's 30 degrees colder than when you were inside, so the temp still stays accurate. It knows that when the mod warms up 30 degrees (at room temp) the coil will be .02 ohms higher.
(those are random figures btw, not accurate. Just using for demonstrative purposes.)
Exactly.. Which is the opposite of what should be happening and not the behavior I'm seeing out of my second "good" board. Which again brings me back to thinking this is an issue with the board.
The thing is... I don't notice any marked difference in resistance between contact and spaced coils. When I use steam to estimate what my resistance will be for a coil, rather I do a contact coil or a spaced coil, the resistance is spot on. I go to steam, estimate a build for .11 ohm... build it as a contact and bam, .11 ohm... do the same build as a spaced coil.. bam .11 ohm...
thats good i was just thinking out loud trying to figure this out
my tank is almost empty so i'll b able to check my post screws once again to usually find them tight but maybe my triple twisted loosened up but then id have to check them cold cause its not having any trouble at room temp.
rusirius my board never gives me the evolve screen unless i take the battery out which is never. ive let it sit for hours while sleeping and it just fires no evolve screen fwiw
rusirius my board never gives me the evolve screen unless i take the battery out which is never. ive let it sit for hours while sleeping and it just fires no evolve screen fwiw
I get the Evolv screen after mine goes into deep sleep (several hours iirc).
i dont sleep well and hit it all through the night and day for that matter. i have a lot of pain that dont let me sleep very long so maybe im not letting it sit long enough
I seem to have a good build going on my Erlprinz RTA. 30 gauge nickel on a 2.4 mm screwdriver, 12 wraps, right around 0.20 ohms. Last nickel build, juice wasn't wicking fast enough, so I trimmed down the tails a bunch, and didn't run any into the juice channels at all. Thought for sure it will just leak built like that, but it just floods a little when filling. After clearing that, it's been running just fine, no leaks, and keeping up with 20 Watts @ 440° temp protection. Haven't seen any temp protection messages yet.
On a side note, I haven't had any problems with my board yet, but I've only had it for a day. Hopefully it stays that way.
BOOM!
On a side note, I haven't had any problems with my board yet, but I've only had it for a day. Hopefully it stays that way.
BOOM!
This is pretty interesting.
I just received My DNA 40 yesterday. I set the temperature and power and things were great. Come back in 5 minutes later, the base resistance changed and it will only go up to 300°. Come back a little bit later and i'm flashing temperature protection.
Well today come to find out that I have the frozen and garbled screen issue.
I really hope your theory is true, because the nickel builds aren't worth a darn if your base resistance is jumping all over the place.
Fixed original post... I was confusing it re-reading base resistance with the logo screen.
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Nope! never mind.... correction..... My screen only does this after sitting idle for a few hours... When sleeping it just comes back to life... it DOES re-read the resistance after sleeping though from what I can tell. I was getting it confused.
This is exactly what I'm beginning to suspect. Your board had the glitch, and also produced (As my first board did) the changing base resistance... Yet it took a day before the garbled screen even manifested. If it hadn't, you'd be another of those in here trying to figure out why your resistance was jumping all over the place.
Like I said, I'm not saying it explains it all, but I'm beginning to suspect more and more that those that are seeing these strange quirks actually have bad boards that just either don't manifest the garbled screen (maybe it's not as severe) or it just hasn't happened yet.
Can someone who has had this issue really badly but no screen garble let us know what settings they are running? Can you set your TP and then crank it to 40W and vape the day on it letting TP kick in a lot and see if by any chance the screen does garble?
im doing a test right now. i put my atty in the freezer to see if the resistance changes as widely as it did yesterday if it doesnt i'll put the mod in the freezer and see what happens. attys been in about 5 minutes thats how long it took outside yesterday so i'll know more soon
If you put down your new mod for >5 minutes and fire it does it show the "Evolv DNA40" message? Because I think only that message indicates a reboot and rereading of the resistance.
I was rather sure that happens only with the screen glitched chips. Otherwise the resistance would change all the time for lots of people. 5 minutes isn't enough for the atty to fully cool down even on my magma without excessive wick, and it doesn't happens with mine when in stealth mode. And your own account of using the mod after a night in the car and it still having the same resistance of room temperature would contradicts this also, since the cold should have lowered the base resistance by 10-15% or so.
But then again others had the experience that the base resistance lowers in the cold on it's own. So confusing!
Maybe there are different versions of the firmware?
ok i just pulled my atty out of the freezer it went in at .10 after ten minutes in the freezer my atty reads .10 so its NOT a CONNECTION issue now its time to put the mod in the freezer and see what happens i guess
Well if it didn't show the "check atty" and "new coil whats up?" message then it might just have reused the old base resistance.
In any case if the anyone's mod with atty attached changes base resistance after 5 minutes or even after one hour that would lead to all these troubles. Like I said my glitched chip only changes base resistance when not in stealth mode. But it's quite possible that rusirius is right and there is a kind of "invisible screen glitch issue" lol.
well i think i just solved my problem with mod in freezer for 8 minutes first fire got screen garbling issue and cant see what it did to the resistance. now after a reset the screen is normal and resistance reads .19 even though the atty stayed at room temp guess i have a bad board or dont use it outside in the winter
My condolences mate. You should be able to use it if you put it in stealth mode but you should RMA it.
It doesn't show the evolv message unless it's been sitting for a couple hours. But it does seem to reset the base resistance after about 6 or 7 minutes of rest. Normally this isn't noticeable, but if I swap off an atty before waking it back up it just shows the new resistance but never asks about a new coil. I've also noticed with some more troublesome builds with slight connection issues it can flux a hundredth or so after sitting a few minutes.
As for in the cold, it actually does make sense on one condition... That the board displays the resistance at room temperature regardless of the current temp. I.e. after sitting in the truck maybe the resistance was .11 but it knew that at say 70 degrees that would be .13 so that's what it displayed. To me, if I was writing the code that would make the most sense. Measure the resistance at whatever the ambient temp is and display it as what it would be at nominal room temp. That way all builds compare relatively to one another regardless of which temp it was first measured at.
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