eVic-VT mini?

[cigatron]

And nr-r-nr coils keep all of the heat on the wet wick (instead of the dry leads), so they may in theory be more accurate for TC.

Maybe.

In theory.

In theory, and in real life, the higher the base res (more active res) the more accurate temp control will be because the mod will see a larger swing in total res change i.e. greater granularity.

Good point though as far as "where" the res is changing with nr legs, at the coil only. I'll have to think on that @VapingTurtle .

 

[VapingTurtle]

So far from skimming this thread I've only picked up on one problem with this device, the misreading res too low/underpowering problem in Ti and SS tc modes. Are there others?

Yeah... a very big problem in a very small minority of them. It involves shifting base resistance when returning from sleep mode, causing anemic vape. Cause: unknown. Solution (other than some voodoo solutions that work for a limited few): purchase from a reputable dealer that will help you and allow a return/exchange and not deny that a problem exists.

Mine, and most, have worked perfectly.

Skim some more. I'd say that the majority of posts in this thread have been about this problem.

 

[cigatron]

So I thought about it @VapingTurtle . I think you're rightish. Confining all of the active res to the coil by using nr legs would provide the most accurate temp readings if the mod was calibrated using only the spec'd tcr for a given tc wire. Some mods appear to be calibrated that way (by the numbers), others appear to compensate for static res residing in the mod wiring and 510 conn (better). Then there are other more advanced mods allowing for tcr/curve adjustments or np settings. A simple water test and quick tcr/np adjustment gets us real close to zero temp offset. Well at 212°f anyway.

So what would be the ultimate for precision and accuracy? A high res, high tcr wire like nifethal52/nife48 with nr legs on a tc mod w/ adjustable tcr? Sure, why not. The high resistivity and tcr would give us high precision tc while the nr legs and adj tcr gives us high accuracy. I like it!

 

[dimo]

Ultimate precision and accuracy would involve ditching the 510 for good and using a connector that allows using a thermocouple to measure temps instead of relying on the solely on the coil. That's how it's done in industrial applications. You would be able to run any wire and coil style you prefer.

But for now using current technology, nr-r-nr would be more accurate than just r. Because the legs count against you. Temps are based on an average of the entire length of wire, including the legs. Using nr legs would be more accurate, but only if they truly no resistance. Nickel for example is already pretty close to nr as it is. The improvement would be marginal at best and maybe not even worth the effort of trying to zap nr legs on a coil. Maybe would be better for higher resistance coils, like titanium.

 

[Tol]

The newest Innokin Disruptor TC is supposed to work that way. Their Advanced Temperature Control system apparently uses a different connection in place a 510 and has a temp sensor sitting inline with the atomizer. For now it would need to be their tank used with it, but from what I have read the connection design will be shared freely for other manufacturers to use. May be slightly old news, but I had happened to have been reading something about it a while back.

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[Tol]

So far from skimming this thread I've only picked up on one problem with this device, the misreading res too low/underpowering problem in Ti and SS tc modes. Are there others?

That is it basically. A lot of people have no issues, some people, myself included had issues with TC. Mine was in Ni mode, I did not have Ti to try and returned mine before SS mode came.

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[cindycated]

I was under the assumption that you never want to torch or dry burn ss because you could create hexavalent chromium. I could have sworn I read that somewhere around here.

I read that same thing of titanium, not SS. I've been looking into SS because I've read that it can be dryburned safely.

 

[Cirkulis]

Supply and demand I would imagine.

I ordered the white one because ft were out of stock on the black and tbh I'm glad.

Apparently "black is upgrade(d) model", thus increase in price. Guess that it's v2 out of box and maybe is anemic vape proof, but I've already ordered white one as well. 2-3 weeks of waiting and I should be able to join the "Sleeping TC" club

 

[Bru2basics]

The newest Innokin Disruptor TC is supposed to work that way. Their Advanced Temperature Control system apparently uses a different connection in place a 510 and has a temp sensor sitting inline with the atomizer. For now it would need to be their tank used with it, but from what I have read the connection design will be shared freely for other manufacturers to use. May be slightly old news, but I had happened to have been reading something about it a while back.

sent using Tapatalk

Innokin Disrupter ATC Mod Preview

Looks interesting but what am I gonna do with all my atty's!

 

[Bru2basics]

Ok something new that maybe a non issue. The screen goes blank when I change atty and press fire button sometimes. It reads different resistance and when I fire it just blanks out and don't fire. Battery good and is usually resolved by taking atty off and battery out. Maybe the witchcraft I used to fix mine is wearing off or its just a duff unit but the trusty hammer is at the ready!

 

[Bru2basics]

Finally got around to watching the pbusardo review and as I figured he had no issues. The interesting thing and a I whole heartedly agree is that if we have these temp control devices with fixed tcr's the manufacturer must provide details with the device of which specific material was used to calibrate the board with. Otherwise were just shooting blind!

 

[Tpat591]

At the end he did mention anemic vape issues but did not go into detail.

 

[Nick N]

My previous SS 430 single 28ga spaced coil @ 0.62 ohms did not have the -0.02 variance problem in SS mode, the 28ga SS 430 dual twisted spaced coil @ 0.25 ohms seems to have the problem every time it sleeps and still registers 0.23 ohms in power mode. Strange how it only drops 0.02 ohms once and can't return ro "normal".

Hardware 1.10, software 2.0

 

[Jim_ MDP]

At the end he did mention anemic vape issues but did not go into detail.

I replayed that part as I was specifically looking to see if it would come up.

What he actually said, paraphrased, was... oh, anemic vape, what's wrong... oh, it's out of juice, fill it up. So TC is working.

He did not experience our "anemic vape".

 

[Major911]

I must be one of the lucky ones. Mine has been so consistent it's scary. I have 4 STM that I build my own ni200 coils .14-.15 and 2 Morph tanks that I run occ ni200 coils .15 the device pegs them all at a .13-.14 baseline and never budged even unlocked and after sleep. Pick it up vape 25watts 470-500 degrees same beautiful vape every time I'm really loving this device even more than my dna40's


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[eddiea]

Ok something new that maybe a non issue. The screen goes blank when I change atty and press fire button sometimes. It reads different resistance and when I fire it just blanks out and don't fire. Battery good and is usually resolved by taking atty off and battery out. Maybe the witchcraft I used to fix mine is wearing off or its just a duff unit but the trusty hammer is at the ready!

Coincidentally, I experienced the exact same thing on mine yesterday after screwing on my Lil Boy RDA with a freshly built dual twisted Ti coil setup. It was the first time I experienced that situation. I discovered it was due to slightly loose post screws...after tightening them down, problem solved. I also double-checked to make sure the 510 pin on the RDA was tight. Interestingly, before tightening the screws I put the RDA on my IPV D2 and it worked fine. Could it be the 510 connector on the VTC Mini is a bit more finicky?...possibly (and IMO probably). Hardware v1.00, firmware v2.00.

 

[Bru2basics]

I replayed that part as I was specifically looking to see if it would come up.

What he actually said, paraphrased, was... oh, anemic vape, what's wrong... oh, it's out of juice, fill it up. So TC is working.

He did not experience our "anemic vape".

I've just been reading the post review notes on taste your juice for the vtc and he's been in contact with joyetech about the wattage control in tc mode and how it's affecting the numbers as it's linked between initial boost and max watts put to the coil. Ive found my temp settings go right out the window by taking mine above 60w which was wat this device was originally designed for and then they magically found 15 extra watts. I remember back to when joyetech took the egrip from 20w to 30w with a hidden menu but for some reason it completely messed up the power curve and was burning through coils left right and centre if you went above 20w so I'm wondering if it's best left below 60w when using tc modes? Probably wrong or just imaging things again but I definately find myself lowering the temp when watts set at maximum.

 

[Bru2basics]

Coincidentally, I experienced the exact same thing on mine yesterday after screwing on my Lil Boy RDA with a freshly built dual twisted Ti coil setup. It was the first time I experienced that situation. I discovered it was due to slightly loose post screws...after tightening them down, problem solved. I also double-checked to make sure the 510 pin on the RDA was tight. Interestingly, before tightening the screws I put the RDA on my IPV D2 and it worked fine. Could it be the 510 connector on the VTC Mini is a bit more finicky?...possibly (and IMO probably). Hardware v1.00, firmware v2.00.

I've checked all the usual culprits when it occurs and to be fair Its only when rotating through my half dozen drippers that I get it happen. Its very random and infrequent so I'm putting it down to user error of some kind.

 

[scrappy]

Yesterday my vtc was having trouble reading ohms. I checked a few other atties and it had trouble with those too. It was also switching from tc mode to kanthal constantly.

I decided to exchange it this morning. My new one has been working perfectly all morning. Some things I noticed though. Base ohm readings on a coil with a little use is absolutely rock solid. It's been reading .11 ohms all morning. My old vtc would bounce from .10 to .12. The other thing is this 510 center pin is much stiffer when screwing on an atomizer. You can feel when it makes contact. On my old one I'd vape at 420 deg with ss, this new one 420 deg is way cooler.

My guess is a bad connection somewhere with the 510. Hopefully this new one won't have any issues. My old one had problems right out of the gate.

 

[Tpat591]

I agree that malfunctioning units in all probability are having some type of connectivity issues at the 510 connections inside the mod or in output connections. The few times I was able to replicate the anemic vape conditions on one of mine I found an issue in my atty that corrected it.