Evolv DNA Forum
Sign up Calendar Latest Topics
 
 
 


Reply
  Author   Comment   Page 1 of 2      1   2   Next
Llama

Junior Member
Registered:
Posts: 13
Reply with quote  #1 
I often do similar builds on my atomizers, that come out with differences in the order of 0.01Ω, but when I swap between two similar atomizers it often doesn't detect that the atomizer is different, and stays on the previous resistance. For example right now I was vaping on a 0.41Ω coil, switched to a 0.39Ω one, and the mod remained stuck on 0.41Ω. This causes an unreliable TC vape experience.

There's a few workarounds for that, like mounting an atomizer with a big resistance difference between the two similar ones, or removing the batteries so it forgets its setting, but they're workarounds, and I do think there should be an easy way to do that from the mod.
retird

Avatar / Picture

Administrator
Registered:
Posts: 1,187
Reply with quote  #2 
Have you tried taking off the atty and firing the device 4 or 5 times (getting Check Atty message) then screwing the different atty on...?
__________________
I am not an employee of and do not represent Evolv Inc.  My opinions are just that and are not meant to be fact or even correct.

Llama

Junior Member
Registered:
Posts: 13
Reply with quote  #3 
Yes, and just tried again to be sure, this time by swapping my 0.41Ω device back after the 0.39Ω, it stays on 0.39Ω.
retird

Avatar / Picture

Administrator
Registered:
Posts: 1,187
Reply with quote  #4 
Does it change after "refinement"? 
__________________
I am not an employee of and do not represent Evolv Inc.  My opinions are just that and are not meant to be fact or even correct.

Llama

Junior Member
Registered:
Posts: 13
Reply with quote  #5 
Do you mean if I use the wrongly calibrated atomizer for a bit ? It probably would, but as far as I remember that means vaping too hot or too cool for a few minutes, which is not really a good option. I'm using SS wire, small calibration differences cause big temperature changes.
retird

Avatar / Picture

Administrator
Registered:
Posts: 1,187
Reply with quote  #6 
Atty's and device must be at the same temperature for proper calibration.  If I take a warm atty off and screw a different one on it may read the ohm's slightly different (0.01 or so). The device ambient temp is different than the atty.  As it refines the ohms have always adjusted properly for me.  I don't use SS.  What you are seeing, I, think, is only being caused by ambient temp differences between device and atty and refinement corrects it.  If the device is unsure of the ohm's it will ask"new/old" but if it grabs a reading then you will not be asked.

Try this:  let device reach room temp and the atty also.... screw atty on and check ohms.   Now let device and second atty reach room temp and screw it on and check that one.



My best thoughts about what you are seeing...

__________________
I am not an employee of and do not represent Evolv Inc.  My opinions are just that and are not meant to be fact or even correct.

dwcraig1

Avatar / Picture

Administrator
Registered:
Posts: 1,248
Reply with quote  #7 
I  would set up identical profiles and switch to the next profile when changing atties. (my work around)
__________________
I am not connected with and do not represent Evolv Inc. All opinions are my own. They are just opinions and may not be correct.
Llama

Junior Member
Registered:
Posts: 13
Reply with quote  #8 
First of all, just noticed I posted in the DNA200 section, while I'm doing my tests on a DNA75, did the test with my 0.39Ω & 0.41Ω on my DNA200 and it asked me if it was a new coil (but I already had similar issues with closer resistance values). The example I'm using for this thread might happen because of the optimization made for low TCR materials like SS they got in the DNA75 firmware.

Anyway it might be better to move this to the DNA75 section, even if I think that being able to force calibration would benefit to both chipsets.

Quote:
Originally Posted by dwcraig1
I  would set up identical profiles and switch to the next profile when changing atties. (my work around)


Isn't  resistance not tied to a specific profile ? Or do you use resistance lock to set a resistance to a given profile ?

Quote:
Originally Posted by retird
Atty's and device must be at the same temperature for proper calibration.  If I take a warm atty off and screw a different one on it may read the ohm's slightly different (0.01 or so). The device ambient temp is different than the atty.  As it refines the ohms have always adjusted properly for me.  I don't use SS.  What you are seeing, I, think, is only being caused by ambient temp differences between device and atty and refinement corrects it.  If the device is unsure of the ohm's it will ask"new/old" but if it grabs a reading then you will not be asked.


I think it wouldn't read the right resistance when calibrating to a very different build between the close ones, if it were what you described.

I tried to make refinement happen, and vaped for like 15 minutes my 0.41Ω with 0.40Ω displayed (previously calibrated to the 0.39Ω a bit before it was completely at room temperature). Refinement never happened.

The problem seems to be that the difference is small enough for the mod to think it's the same coil, and refinement is a poor way to deal with such situation, if it means having a non satisfying vape, even temporarly.
dwcraig1

Avatar / Picture

Administrator
Registered:
Posts: 1,248
Reply with quote  #9 
My thoughts pertained to mounting a cold atty, for hot I would just lock the Ω in the same profile if the cold resistance is real close.
__________________
I am not connected with and do not represent Evolv Inc. All opinions are my own. They are just opinions and may not be correct.
retird

Avatar / Picture

Administrator
Registered:
Posts: 1,187
Reply with quote  #10 
Refinement doesn't happened while vaping.... refinement occurs as the device sets idle.... at any rate you might use the work-around mentioned by dwcraig1.... SS is a touchy wire from what I read ... good luck.....



__________________
I am not an employee of and do not represent Evolv Inc.  My opinions are just that and are not meant to be fact or even correct.

Llama

Junior Member
Registered:
Posts: 13
Reply with quote  #11 
If you set it idle long enough for it to turn itself off, then it will recalibrate when restarting (if you see the boot logos), is it what you mean by refinement ?

EDIT: ha my bad, apparently it recalibrates when set idle, without entering in standby mode. I didn't know that, thanks for the tip [smile]
Still, not vaping is not really what I'd call a good solution to this calibration problem, being able to force it would be much better, imo.
retird

Avatar / Picture

Administrator
Registered:
Posts: 1,187
Reply with quote  #12 
dwcraig1 gave you the work-around to "force it".....profiles can be set many ways....  what you are seeing is not a calibration problem but a user problem... refinement works as designed, locking resistance works as designed, and so does setting up a profile works as designed.....[smile]
__________________
I am not an employee of and do not represent Evolv Inc.  My opinions are just that and are not meant to be fact or even correct.

Llama

Junior Member
Registered:
Posts: 13
Reply with quote  #13 
I never said anything was not working as intended, I said it would be convenient to be able to quickly recalibrate. Even the fact it doesn't always detects an atomizer change is probably because the difference in resistance seemed enough for the firmware devs to assume it was the same coil, so it's like this by design.

At first I didn't get what dwcraig1 ment, but after playing a bit more with profiles I understand, and I didn't know it kept locked resistance values tied to a preset (now that I think of it, I should have guessed, with the checkbox for locked resistance in profile pages in escribe) . This isn't even a workaround, but apparently a proper way to deal with the situation I described, making profiles much more usefull. Thanks for these informations.

But I still think it would be nice to be able to just recalibrate quickly ^^ (and also change the preheat without using escribe, but that will be for another thread)

EDIT: I rejoiced too fast, are the locked ohm values erased when the device enters in standby mode ? my 0.39Ω build is seen as 0.41Ω on all my profiles now. [frown]
retird

Avatar / Picture

Administrator
Registered:
Posts: 1,187
Reply with quote  #14 
Glad you are learning more about the DNA technology....preheats can also be set in profiles.... there is a learning curve using DNA stuff so don't get discouraged.... [thumb]
__________________
I am not an employee of and do not represent Evolv Inc.  My opinions are just that and are not meant to be fact or even correct.

stuartro

Member
Registered:
Posts: 35
Reply with quote  #15 
Llama, I have profiles for each of the different atomizers (RTAs and RDAs) that I have, with names like Griffin 25, Griffin A, Griffin B, Griffin C (I have three 22mm Griffins), Tsunami, Royal Hunter, etc. When I install a new coil / set of coils in a particular RTA/RDA, I unlock resistance for the correct profile (lock device, hold fire & +), and fire briefly to get the DNA to "pick up" the resistance, and then I lock resistance in again.

This way when I switch tanks or drippers I can switch based on profile name and vape on. I also have a "general" profile named Power Mode, which is the only one that is non-TC. What's so cool about profiles is that they also store the last temperature and power set for a profile—temperature is especially important for me, as I like to vape different juices at different temperatures (hotter for custards and fruit flavours, a touch cooler for tobaccos).

I almost can't imagine vaping on a non-DNA200 device now. Only thing I'd like is a few more profiles... at some point I'm going to pass 8 RTAs/RDAs.
Previous Topic | Next Topic
Print
Reply

Quick Navigation:

Easily create a Forum Website with Website Toolbox.