Official DNA 40 introduction

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jazzvaper

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Thanks Hees. I thought that might be my issue but I've built it off the device as well and no luck. Putting the device down for a few mins seems to throw the temp control completely out of whack. The temp. shoots right up and the wattage drops significantly to compensate. When I take the atty off and put it back on and let it detect the new atty, it works fine again. My last build is a .2 ohm and it stays well below the 450 degrees I've set initially but stops doing so after a few mins.

In addition to Heespharm's recommendation you might play a bit with you adjustable (?) 510: a little more in, a little more out. That may stabilized things...
 

jsx821

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I think this issue has been mentioned before too but my VF is definitely not working right. I've tried numerous builds and its always the same issue. A new coil seems to work fine with temp control doing what it's suppose to do but as soon as I leave the mod alone and come back to it, the resistance changes and the temp shoots up right away. This drops the wattage down to 3 to 7 watts (I have 13.5 watts set). I've tried 30 gauge and 28 gauge, contact and no contact coils. They all seem to do the same thing. When I remove the RBA and put it back on and click the option for a new coil, it starts to work fine again until I put the device down for a few minutes.

I'm pretty frustrated with this, anyone know if there is a solution for this? Thanks in advance or your help, much appreciated.

A lot of people are suffering from this issue... including me.

Edit; my friends DNA40 works flawlessly with the ohms stable. I took his atty off and put it on mine. Mine was struggling to keep a proper ohm reading. I definitely think this is a software issue.
 
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jazzvaper

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have you tried the 40W method to see if your board is glitched? Those issues sound suspicious since there are boards out there without that problem and someone here mentioned that the "flaw" might not just be a "garbled" screen but also some things you are experimenting.

Regards
Tony

We "professional" beta testers make a distinction between a bug and an anomaly. (More than two decades of testing with premier co.'s, under very restrictive NDA's...avocationally.) So...I have had what I am counting an anomaly 'cause it's happened only once..so far. (A bug must be replicable by definition.)

Vaping on a tank on and off for about two hours, while watching videos, I had an effect like drying wick on a TP build. Turned the tank upside down seeing there's plenty of eliquid available. Vaping...vaping...vaping, I get that sense again a while later, running out of liquid? Not according to what I see.

Eventually, I look at the screen of the VS rDNA, not believing my eyes I go back to vaping. Shortly I get a repeat of the above behavior but this time I do believe my eyes. Where the display should show (degrees) "F" it show "V". At the resistance line I notice that a build that was 0.18 (or 0.20, two different R91's so I don't remember which was atop) now reads 0.35 or 0.37. The tank's base is warmer than usual.

Not enough information to form a hypothesis, yet, I believe the additional heat may have convinced the board that I had switched to a Kanthal build. What is missing from by scenario is that I do not remember whether I removed the tank to check the liquid level. So, my possible hypothesis does not rise above the level of pure speculation.

Nevertheless, I have accurately reported my "experience". :unsure:
 

doghouse

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A lot of people are suffering from this issue... including me.

Edit; my friends DNA40 works flawlessly with the ohms stable. I took his atty off and put it on mine. Mine was struggling to keep a proper ohm reading. I definitely think this is a software issue.


Have you had any luck contacting Evolv about this?
 

jaxgator

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jsx821

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Have you had any luck contacting Evolv about this?

I have my friend. It's been more than a week since I've emailed a lengthy write-up about the whole situation.. No response.
This has been happening pre-screen glitch and post-screen glitch. If I don't get a response soon, I'm probably going to give them a call later this week.
 

doghouse

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Sounds good JSX. Hopefully they'll get back to you, would love to find out what they say. It sucks paying $300 for a device and running into these issues. I had messaged vapor flask about this as well, their response to me was, it's probably the build I'm doing. I highly doubt that because I've tried many different builds and different RBAs with the same result.
 

MJMcMahon

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Who cares about Pegasus and or his delusions of grander with his non existent fantasy mod.

I was able to build a parallel 18650 DNA40 mod cheaper actually 2 of them
VapeDroid 3D printed B2-D1 Mk.2 US Version $70 each shipped from shapeways
DNA40 from round1 co-op with USB charger $45.39 each shipped
FD 510 V3 Connectors with 22mm washers like $7.00 each shipped from Fatdaddyvapes
$70
$45.39
$7.00
total = $122.39
Lets add some Ni200 and batteries I already had both, but for sake of argument
Pure Nickel Wire 28 Gauge AWG Ni200 100' $7.25 shipped Lightning Vapes (Ebay)
MXJO 18650 batteries I got from a local B&M I go to cost me 12.50 a pair
$122.39
$12.50
$7.25
Grand total $142.14 each granted I still have one board that is glitching and sent back to Evolv for the second time, Replacement board glitched during testing before install so I sent it back right away, still waiting on the replacement of the replacement.

I like the look of that mod, but it appears that VapeDroid is no longer selling his design?
 

RandyF

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Eventually, I look at the screen of the VS rDNA, not believing my eyes I go back to vaping. Shortly I get a repeat of the above behavior but this time I do believe my eyes. Where the display should show (degrees) "F" it show "V". At the resistance line I notice that a build that was 0.18 (or 0.20, two different R91's so I don't remember which was atop) now reads 0.35 or 0.37. The tank's base is warmer than usual.

Not enough information to form a hypothesis, yet, I believe the additional heat may have convinced the board that I had switched to a Kanthal build. What is missing from by scenario is that I do not remember whether I removed the tank to check the liquid level. So, my possible hypothesis does not rise above the level of pure speculation.

Nevertheless, I have accurately reported my "experience". :unsure:

I have had this happen as well, but it is difficult to replicate and is not consistent. My theory was either the coil adjusted position creating a hot spot (from heating and coiling the wire, this nickel is soft), or the connection with the legs became unsecure. This was on my Lemo and has happen with only a couple builds, all the others never had this issue, leading to my theory that it could be coil/connection based, and an initially good coil turns into a problem.
 

WeirdWillie

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DejayRezme

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    rossum found some titanium on amazon. I believe they have 30 and 26 gauge. There is also a European supplier with other sizes and purities.

    www.zivipf.com
    And I just checked he actually ships worldwide. "Starting at 5€" might be more depending on packet size.

    EDIT: Just to collect all sources in one post if someone asks again :)

    Rossum: I got my 24 gauge Ti on Amazon and 30 gauge Ti from Rio Grande
    Bman1959: Don't remember who, but someone gave this supplier:
    https://www.etsy.com/listing/74698735/pure-titanium-wire-hypoallergenic-100


    How will the DNA 40 handle say 24g titanium or would 30g be more suitable? Not sure if thicker wire has any effect on Temp Control..

    I got the 0.25mm (30 AWG) and 0.34mm (27 AWG). I would not go much higher than 27 it's already very strong and springy. Thicker wire has no real advantage, it only increases heat up time. It should work fine though. But you can build the same surface area with thinner wire and put the same power through it.
     
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    DejayRezme

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    Where the display should show (degrees) "F" it show "V". At the resistance line I notice that a build that was 0.18 (or 0.20, two different R91's so I don't remember which was atop) now reads 0.35 or 0.37. The tank's base is warmer than usual.

    This is probably a connectivity issue since your resistance gone up. Either the 510, the post connection to the coil or possibly internal resistance with the kayfun screw. Unfortunately the temp measuring through resistance and the low resistance of nickel makes the chip especially sensitive to small connectivity issues.

    When the resistance jumps up the additional resistivity doesn't change with heat so the chip assumes you have a kanthal build and switches from "F" to "V"

    PS: It might help taking the kayfun apart and cleaning / tighten the center screw. But it's just speculation.
     
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    Woofer

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    We "professional" beta testers make a distinction between a bug and an anomaly. (More than two decades of testing with premier co.'s, under very restrictive NDA's...avocationally.) So...I have had what I am counting an anomaly 'cause it's happened only once..so far. (A bug must be replicable by definition.)

    Vaping on a tank on and off for about two hours, while watching videos, I had an effect like drying wick on a TP build. Turned the tank upside down seeing there's plenty of eliquid available. Vaping...vaping...vaping, I get that sense again a while later, running out of liquid? Not according to what I see.

    Eventually, I look at the screen of the VS rDNA, not believing my eyes I go back to vaping. Shortly I get a repeat of the above behavior but this time I do believe my eyes. Where the display should show (degrees) "F" it show "V". At the resistance line I notice that a build that was 0.18 (or 0.20, two different R91's so I don't remember which was atop) now reads 0.35 or 0.37. The tank's base is warmer than usual.

    Not enough information to form a hypothesis, yet, I believe the additional heat may have convinced the board that I had switched to a Kanthal build. What is missing from by scenario is that I do not remember whether I removed the tank to check the liquid level. So, my possible hypothesis does not rise above the level of pure speculation.

    Nevertheless, I have accurately reported my "experience". :unsure:

    I have experienced this anomaly too. And it's something I've seen on 2 Kebo R91% :(
    I will drop a note to Brandon so they know it's not just you. Having said that I am convinced it is something about the atty, not the board.
    My Magma and Origen are rock solid, always.
    I need to get back to the R91 with an organized approach ... but I'm enjoying the magma so much I can't get to it. :lol:
     
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