DNA 200 Watt

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footbag

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guys I apologize if this is really stupid but I don't know. why does it not ask new coil each time? hardly ever does.

I think there's a resistance threshold (20% IIRC). If the resistance is off by 20% or more, it asks if it's a new coil rather then making you lock it in manually.
 

footbag

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Dropping out of TC...

Would this still happen if you have the proper TCR and atty resistance set in the device? If it uses logic to determine whether the wire is the wire you've told it, it's not really a bug to jump out of TC if it thinks you have the wrong TCR. I can see where jumping out of TC can be worrisome, but it seems more like a design choice for an advanced vaping device rather then a bug. You could argue it's a poor design choice, but if they say it's the way it's supposed to be, then it isn't a bug.

Here's my example. Lets say you have a new car with a safety device that attempts to slow down and pull over if it notices you falling asleep. If you close your eyes for 3s while driving, and the car slows down and pulls over; is it a bug? You didn't fall asleep, right?

The point is that logic is limited by the amount of input. If you are sloppy with your input, well "garbage in, garbage out". That's why Evolv included a few ways to get more data on specific configurations. They are trying to give the logic more to work with.
 

Vlad1

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Dropping out of TC...

Would this still happen if you have the proper TCR and atty resistance set in the device? If it uses logic to determine whether the wire is the wire you've told it, it's not really a bug to jump out of TC if it thinks you have the wrong TCR. I can see where jumping out of TC can be worrisome, but it seems more like a design choice for an advanced vaping device rather then a bug. You could argue it's a poor design choice, but if they say it's the way it's supposed to be, then it isn't a bug.

Here's my example. Lets say you have a new car with a safety device that attempts to slow down and pull over if it notices you falling asleep. If you close your eyes for 3s while driving, and the car slows down and pulls over; is it a bug? You didn't fall asleep, right?

The point is that logic is limited by the amount of input. If you are sloppy with your input, well "garbage in, garbage out". That's why Evolv included a few ways to get more data on specific configurations. They are trying to give the logic more to work with.

There are a few reasons that can cause it to drop out of TL mode. But to answer your question yes even with proper TCR and atty resistance it can drop out of TL mode. If the user vapes at cooler settings or at low power for the coil or coils being used it may not reach the 150F in the time frame required and will drop out of TL mode into Power mode and persist in Power mode until the device is rebooted or a new atty detected or perhaps other ways to get it back to the proper TL mode of the selected profile.

When this occurs it appears to use the Live Ohms for Cold Ohms and no longer reads the actual Cold Ohms until a reboot, new atty etc.. which is probably why it never returns to TL mode since it doesn't think the coil resistance has ever risen enough. As you state this could be by design but I cant think of a logical reason it would ever want to intentionally read the Cold Ohms incorrectly or fail to go back into TL mode even when raising the power settings when a TL profile is selected.
 

retird

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footbag, I ran a quick test and set my nickel premade coil at low temperature (200F) and low power (12 watts) (preheat at 100 watts and punch at 5). Vaped it while looking at Device monitor and it met temp and didn't drop out of TL. Guess what I noticed though?
No Vapor... not a shock since the liquid wasn't vaporizing at 200F.

Untitled.png


Ran a second test:

I ran a quick test and set my nickel premade coil at low temperature (200F) and low power (12 watts) (preheat at 50 watts and punch at 5). Vaped it while looking at Device monitor and it met temp and didn't drop out of TL. Guess what I noticed though?
No Vapor...still not a shock since the liquid wasn't vaporizing at 200F.

Untitled.png
 
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tchavei

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There are a few reasons that can cause it to drop out of TL mode. But to answer your question yes even with proper TCR and atty resistance it can drop out of TL mode. If the user vapes at cooler settings or at low power for the coil or coils being used it may not reach the 150F in the time frame required and will drop out of TL mode into Power mode and persist in Power mode until the device is rebooted or a new atty detected or perhaps other ways to get it back to the proper TL mode of the selected profile.

When this occurs it appears to use the Live Ohms for Cold Ohms and no longer reads the actual Cold Ohms until a reboot, new atty etc.. which is probably why it never returns to TL mode since it doesn't think the coil resistance has ever risen enough. As you state this could be by design but I cant think of a logical reason it would ever want to intentionally read the Cold Ohms incorrectly or fail to go back into TL mode even when raising the power settings when a TL profile is selected.
I had this happen once while reading. I was taking really small chain puffs for I don't know how much time and suddently I got like mega hot hits and juice was literally coming out like hot lava. Removed atty, cleaned, put on, same thing. I could hear the juice sizzle inside the chamber.

In my case, I left the unit rest for an hour (was too lazy to check what was going on with the computer) and after that everything went back to normal. It probably went into sleep (startup screen showed up after the rest) and reset whatever happened.

Bug or not, it got me pretty confused. I do admit it appears to be a minor issue and probably won't occur easily in real life situations.

Anyway, never happened again and it works like a champ... Except for the screen. I think I'm on my fourth now. I can't keep them for more than a couple of months until they start getting dimmed and unusable (the ribbon wire starts breaking near the glass) but that's a design issue. You can avoid touching the micro on board fire button but you can't avoid the metal button touching the cable. I use the device 24/7 so sooner or later the tiny movements will stress crack the ribbon cable near the glass (under the black isolation tape).

I still love it though :)
 

Vlad1

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For comparison purposes Retird provided a reference to a correctly functioning Temp Limiting scenario so here's one that's dropped out of TL. Pay particular attention to the Live Ohms and Cold Ohms, Notice how the Cold Ohms initially drops upon firing but quickly sync's with Live Ohms. Also notice there is no Preheat ever applied (an indicator of Power Mode). As I mentioned earlier I think the importance of the incorrect reading of the Cold Ohms when in this state is most likely the cause of the device not going back into Temp mode.

TempDropout.mp4

After dropping out of Temp Limiting and reading Live Ohm's as Cold Ohms
upload_2015-12-1_20-3-21.png



After Reboot and with Temp Limiting functioning and reading the correct Cold Ohms
upload_2015-12-1_20-4-55.png
 

Vlad1

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I had this happen once while reading. I was taking really small chain puffs for I don't know how much time and suddently I got like mega hot hits and juice was literally coming out like hot lava. Removed atty, cleaned, put on, same thing. I could hear the juice sizzle inside the chamber.

In my case, I left the unit rest for an hour (was too lazy to check what was going on with the computer) and after that everything went back to normal. It probably went into sleep (startup screen showed up after the rest) and reset whatever happened.

Bug or not, it got me pretty confused. I do admit it appears to be a minor issue and probably won't occur easily in real life situations.

Anyway, never happened again and it works like a champ... Except for the screen. I think I'm on my fourth now. I can't keep them for more than a couple of months until they start getting dimmed and unusable (the ribbon wire starts breaking near the glass) but that's a design issue. You can avoid touching the micro on board fire button but you can't avoid the metal button touching the cable. I use the device 24/7 so sooner or later the tiny movements will stress crack the ribbon cable near the glass (under the black isolation tape).

I still love it though :)

Hmm, I haven't let one rest that long, but I have waited about 10 min and waited and watched the refinement go on for about 5 min and was still in Power mode.
 

footbag

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There are a few reasons that can cause it to drop out of TL mode. But to answer your question yes even with proper TCR and atty resistance it can drop out of TL mode. If the user vapes at cooler settings or at low power for the coil or coils being used it may not reach the 150F in the time frame required and will drop out of TL mode into Power mode and persist in Power mode until the device is rebooted or a new atty detected or perhaps other ways to get it back to the proper TL mode of the selected profile.

When this occurs it appears to use the Live Ohms for Cold Ohms and no longer reads the actual Cold Ohms until a reboot, new atty etc.. which is probably why it never returns to TL mode since it doesn't think the coil resistance has ever risen enough. As you state this could be by design but I cant think of a logical reason it would ever want to intentionally read the Cold Ohms incorrectly or fail to go back into TL mode even when raising the power settings when a TL profile is selected.

Can you reproduce it?

If it's such low temp, then you probably aren't getting any vapor as was said above. Since it's so low, maybe TL becomes irrelevent. What happens if you bump up the wattage or relock the reistance?

The only reason I can think of is that they chose to not give you a check atty message when they see the temp doesn't rise much. Maybe they thought the temp
Couldn't be accurate in certain conditions. This was the best alternative. Has anyone asked on the Evolv board?
 

Wingsfan0310

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It seems like if you really try you can get it to drop out of TC. Using it in a way no one would. Not sure what the point is (I could guess, but it wouldn't be nice). If you try hard enough, I'm sure you can make just about anything fail. This has to be the definition of beating a dead horse.
 

Vlad1

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Can you reproduce it?

If it's such low temp, then you probably aren't getting any vapor as was said above. Since it's so low, maybe TL becomes irrelevent. What happens if you bump up the wattage or relock the reistance?

The only reason I can think of is that they chose to not give you a check atty message when they see the temp doesn't rise much. Maybe they thought the temp
Couldn't be accurate in certain conditions. This was the best alternative. Has anyone asked on the Evolv board?

Yes it's reproducable, yes it's been posted on Evolv's forum. There are other similar in nature occurrences posted there as well that may or may not be caused by temp. Temperature on this is subjective since not everyone runs the same coil size or type of alloy, someone running dual coil clapton may not notice it until they drop to 70W whereas someone running a single coil may hit it at 20W or 30W. Additionally if someone gets a funny run of wire or their TCR is slightly off I could imagine that could play a role as well. But however you want to slice it, it's going into power mode and reading Live Ohms as Cold Ohms. Bug or by design call it what you please.
 

Vlad1

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It seems like if you really try you can get it to drop out of TC. Using it in a way no one would. Not sure what the point is (I could guess, but it wouldn't be nice). If you try hard enough, I'm sure you can make just about anything fail. This has to be the definition of beating a dead horse.

Guess all you like. If you care to read the thread you'll see I was answering Footbag's question. Then Retird posted seemingly to prove me wrong. So I provided data to substantiate my statement. Like it or not it is what it is. And no I don't have a problem with it dropping out as I build simple coils. But again if you read further back in the thread and the Evolv Forum you will see there are other users that appear to have this happen to them.
 

retird

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Retird only took Vlad1's assumptions and did 2 quick tests. The results were given and Device monitor screen captures provided. That's all..... The test results shown don't seem to agree with his assumptions. The tests were ran to try to reproduce his assumptions. The test results are what they are. Are my test results proof that there is not a bug or defect? NO

Whether it is or is not a bug or defect doesn't seem to be my decision to make, nor Vlad1's, but it is Evolv's to determine. My thoughts are that he just needs to present his case to Evolv. If it is a bug or defect I feel certain Evolv would thank him for bringing it to their attention and providing them with all data and EScribe screen captures for them to properly evaluate the issue.

If the assertions really turn out to be a bug or defect after Evolv evaluates them we will all be better off because they will correct it. Posting time and time and time again here brings us no closer to a definitive answer IMO and folks are growing weary of all the redundancy I think.

At least that is my opinion. My opinion and 2 bucks will buy a cup of coffee.
 
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nic_fix

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you know what? at first I said hana was better than effusion. well effusion at least wins the cool factor and it is fine too. if they have the color I want in stock I am getting another tomorrow. I never thought I would prefer captive batteries. now that I have a $90 usb charger it is all good.

quarter billion dollar property? a single family home? if so dayuuum. that's like a hi-rise full of nice condos. good homes like mine, ahem have ir and heat detectors. once my wife thought I had set the home on fire from vaping and they did not go off. also have sprinklers which obviously do not go off. vape bash..... that was a different story!
 

Vlad1

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@Vlad1 Link me the thread on the evolve forum where this is being worked on so I can catch up on the issue and see if I can contribute anything.

May or may not be the exact same but similar in nature.

Apparently this problem has already been reported on the Evolv forum and at least James has responded to the thread so perhaps a fix is being looked into.

Hard Reboot for temp control - DNA 200 Early Adopters Forum

Edit: here's another thread again similar in nature. Posts are not really organized so you may find others if you poke around.

Temp Control Stops working until a hard reboot - DNA 200 Early Adopters Forum
 
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