DNA 200 Watt

[TheBloke]

Yes, on a Yihi (Boxer mod, SX350j dual batteries). When I hit fire, it reads the resistance. I don't know if it reads it constantly (probably not).

Ah OK, that's not live resistance reading as I'd call it. I think every VW mod does that? Updates the resistance at start of fire to ensure the right volts for the vape. Or maybe some only do it at the end?

Anyway, live resistance reading as I meant it would be re-reading the resistance constantly throughout the vape, as it does in TC mode.

I think the fact that the volts don't change does indicate it doesn't do that, or at least if it does then there's no benefit to it because it doesn't translate that into changing volts.

Anyway I'm not particularly recommending that people VW vape with Resistherm, it's only for dry burning that I find it particularly useful. I just thought it was cool that it's possible at all, and indicative of the benefits of the metal: the combo of being TC-capable but also Kanthal-like in maximum temperature and strength.

 

[Azarias]

Just out of curiosity. What would be the point of real time resistance reading in VW where Kanthal and NiCr are used? Both wires have such a little temperature coefficient that the resistance isn't significantly changing.
Maybe with Resitherm but I can't imagine that someone would buy that pretty expensive wire without running it in temperature mode.

Or am I overlooking something?

 

[TheBloke]

Just out of curiosity. What would be the point of real time resistance reading in VW where Kanthal and NiCr are used? Both wires have such a little temperature coefficient that the resistance isn't significantly changing.
Maybe with Resitherm but I can't imagine that someone would buy that pretty expensive wire without running it in temperature mode.

Or am I overlooking something?

There's no point to it We just wondered if it happened.

My/our first assumption was that it wouldn't happen - for the reason you mention; there's no point. Then I wondered if perhaps, to simplify the design of the chip, a TC mod might do live resistance reading always. That way they could write a single block of code for "read resistance and update volts" and use it in both VW and TC modes, rather than having separate behaviour in and out of TC. It wouldn't matter if it also did live resistance reading for VW because, as you say, it would be expected to have no effect.

I really only mentioned VW vaping on Resistherm/Alloy 120 as an aside, to demonstrate that it had the benefit of being Kanthal-like (high max temp, strong, dry-burnable) as well as being a good TC wire. I'm not suggesting anyone actually uses it in VW mode, besides for dry burning for cleaning. A VW vape would technically work, but the vape will taper off towards the end, and be erratically more/less powerful between vapes depending on whether/how much you let the coil cool down between each vape.

Some people do use Titanium in such a situation on a Mech mod, so the same would apply with Resistherm: it's possible. But if you have a TC mod, you definitely should use Resistherm with TC as you said (And no-one is likely to even get Resistherm if they don't have TC. Ditto Alloy 120, unless it becomes available in spool-sized quantities.)

If you also have a lot of VW-only mods maybe there's some small benefit in knowing you could pick up a Resi build and just vape it on any mod, perhaps in a pinch, but it's not going to be commonplace.

 

[BlueridgeDog]

This thread seems to get off the rails from time to time, but eventually find its way back. Seems like 1996 USNET.

 

[TheBloke]

Ah ha, actually it does happen on the DNA 40, as I have just been reliably informed via Brandon @ Evolv's watchful eye on this thread

He PM'd me on the Evolv forum earlier today asking for the full details of what I was hoping to see regarding Static Resistance in Profiles (so that we can enter the measured Static Resistance of a given atomizer, and enter this in a Profile, thus creating profiles for specific Atomizer+Wire-Type combos, giving the most accurate possible TC for each combo.) He mentioned at the time that he's not allowed to post in this thread (and presumably most others) as he's a registered vendor account.

Following that, just now I got another PM from him regarding the question we've been discussing. EDIT: I'll paraphrase rather than direct quote, just in case a direct quote is in violation of the above rule

The Evolv chips do read resistance 'in real time' in both vw/temp modes. They've been doing that since the Darwin in 2010. The chip reads resistance and make adjustments during firing to any variation in resistance 'many many many' times per second to maintain constant power output. Any Evolv product would give constant power vaping when using Resistherm (and Titanium or any other TC wire) in VW mode.

Further, he believes it's possible that competing chips/mods can't read resistance and fire at the same time hence giving a 'stutter vape' in temp mode.

So there you have it Sounds like a decent benefit of the Evolv chips, and something to compare others against. I certainly have experienced 'stutter vapes' as he calls it on some cheap DNA 40 clones, but I haven't personally noticed it on the premium competition (Yihi, Dicodes.) I'll see if I can think of a way to empirically test mods for that behaviour.

What I have noticed is that in my extended temp tests, where I hold down the fire button down for as long as possible until just before time-out, then re-press it immediately and repeat, the DNA 40 usually does not change its temp at all. Looking afterwards at a graph of temp output, I can't tell where I pressed/re-pressed the fire button, because it just keeps firing at the same temp. That's a noticeable improvement over many other mods, where there's peaks and troughs associated with each re-press of fire. That may be demonstrating the point Brandon makes there, or perhaps a different/related point such as the other mods not keeping track of resistance nearly as fast when fire is not pressed, thus losing the precise temp even during a split-second release/re-press of fire.

Anyway I have a bunch of test results along these lines, and more to come, which I hope to post pretty soon.

 

[Azarias]

This thread seems to get off the rails from time to time, but eventually find its way back. Seems like 1996 USNET.

As long as it's still interesting and more ore less still on topic (resistance reading etc - DNA) I think we can live with that.

 

[dwcraig1]

I have my 1 amp charger sitting here awaiting tomorrow's arrival of my Opus 200 and the Escribe software has been installed for a couple of days now. I'm ready. Maybe I'll end up putting a USB 3.0 card in my desktop (PC)

 

[peraspera]

Stainless Steel is right at the lower range of accurate TC, at least it assuming the DNA 200 has no better than 1-in-1000 ohms reading (as other premium TC mods do, and as the software suggests it does.) It will be accurate to nearest 30°C versus nearest 5°C of Ni200. But that can still be totally fine - although it's not super accurate, it can be very repeatable; ie you find a temp setting that gives a good vape, good taste, and no dry hits, and then you can repeat that every time thereafter with similar builds.

I could be remembering incorrectly but I believe that Brandon mentioned in an interview (DNA40 intro with Busardo?) that Evolv chose not to use SS for temp protection because it is graded on the basis of its chemical resistance rather than it being a specific alloy. Therefore, identical grades of SS from different sources would not necessarily have the same resistance.

It might be something worth quick check to avoid some possible hair pulling if you are planning on checking SS wire for temperature protection.

 

[KTMRider]

I have my 1 amp charger sitting here awaiting tomorrow's arrival of my Opus 200 and the Escribe software has been installed for a couple of days now. I'm ready. Maybe I'll end up putting a USB 3.0 card in my desktop (PC)

Check to see what your DNA200 is charging at with your computer's USB first. If you're getting less than 1a, then you can upgrade but for data transmission, 2.0 is more than enough.

 

[windxrunner]

Ah ha, actually it does happen on the DNA 40, as I have just been reliably informed via Brandon @ Evolv's watchful eye on this thread

He PM'd me on the Evolv forum earlier today asking for the full details of what I was hoping to see regarding Static Resistance in Profiles (so that we can enter the measured Static Resistance of a given atomizer, and enter this in a Profile, thus creating profiles for specific Atomizer+Wire-Type combos, giving the most accurate possible TC for each combo.) He mentioned at the time that he's not allowed to post in this thread (and presumably most others) as he's a registered vendor account.

Following that, just now I got another PM from him regarding the question we've been discussing. EDIT: I'll paraphrase rather than direct quote, just in case a direct quote is in violation of the above rule

The Evolv chips do read resistance 'in real time' in both vw/temp modes. They've been doing that since the Darwin in 2010. The chip reads resistance and make adjustments during firing to any variation in resistance 'many many many' times per second to maintain constant power output. Any Evolv product would give constant power vaping when using Resistherm (and Titanium or any other TC wire) in VW mode.

Further, he believes it's possible that competing chips/mods can't read resistance and fire at the same time hence giving a 'stutter vape' in temp mode.

So there you have it Sounds like a decent benefit of the Evolv chips, and something to compare others against. I certainly have experienced 'stutter vapes' as he calls it on some cheap DNA 40 clones, but I haven't personally noticed it on the premium competition (Yihi, Dicodes.) I'll see if I can think of a way to empirically test mods for that behaviour.

What I have noticed is that in my extended temp tests, where I hold down the fire button down for as long as possible until just before time-out, then re-press it immediately and repeat, the DNA 40 usually does not change its temp at all. Looking afterwards at a graph of temp output, I can't tell where I pressed/re-pressed the fire button, because it just keeps firing at the same temp. That's a noticeable improvement over many other mods, where there's peaks and troughs associated with each re-press of fire. That may be demonstrating the point Brandon makes there, or perhaps a different/related point such as the other mods not keeping track of resistance nearly as fast when fire is not pressed, thus losing the precise temp even during a split-second release/re-press of fire.

Anyway I have a bunch of test results along these lines, and more to come, which I hope to post pretty soon.

I did know about this, this is one of the reasons that I've always been a die-hard Evolv fanboy. Kanthal/Nichrome builds can fluctuate close to .1 in resistance from being heated, used, abused and whatnot, and I've always really dug the way it gives that constant wattage at all times, no matter what your coil is doing. The way other boards function feels almost more like a mech to me from a hit to hit basis,,,I don't mean dying down over time, just how the hit doesn't seem as consistent as a hit powered by an Evolv board. Most people probably can't taste the difference, but I can, so that's one of the bigger reasons I've always chosen devices with Evolv boards over others.

 

[Yozhik]

Just fyi, Boxer is making a DNA200 cradle. His buttons on the SX350J Boxer rock, so I'd expect similar quality.

 

[tchavei]

Ah ha, actually it does happen on the DNA 40, as I have just been reliably informed via Brandon @ Evolv's watchful eye on this thread

He PM'd me on the Evolv forum earlier today asking for the full details of what I was hoping to see regarding Static Resistance in Profiles (so that we can enter the measured Static Resistance of a given atomizer, and enter this in a Profile, thus creating profiles for specific Atomizer+Wire-Type combos, giving the most accurate possible TC for each combo.) He mentioned at the time that he's not allowed to post in this thread (and presumably most others) as he's a registered vendor account.

Following that, just now I got another PM from him regarding the question we've been discussing. EDIT: I'll paraphrase rather than direct quote, just in case a direct quote is in violation of the above rule

The Evolv chips do read resistance 'in real time' in both vw/temp modes. They've been doing that since the Darwin in 2010. The chip reads resistance and make adjustments during firing to any variation in resistance 'many many many' times per second to maintain constant power output. Any Evolv product would give constant power vaping when using Resistherm (and Titanium or any other TC wire) in VW mode.

Further, he believes it's possible that competing chips/mods can't read resistance and fire at the same time hence giving a 'stutter vape' in temp mode.

So there you have it Sounds like a decent benefit of the Evolv chips, and something to compare others against. I certainly have experienced 'stutter vapes' as he calls it on some cheap DNA 40 clones, but I haven't personally noticed it on the premium competition (Yihi, Dicodes.) I'll see if I can think of a way to empirically test mods for that behaviour.

What I have noticed is that in my extended temp tests, where I hold down the fire button down for as long as possible until just before time-out, then re-press it immediately and repeat, the DNA 40 usually does not change its temp at all. Looking afterwards at a graph of temp output, I can't tell where I pressed/re-pressed the fire button, because it just keeps firing at the same temp. That's a noticeable improvement over many other mods, where there's peaks and troughs associated with each re-press of fire. That may be demonstrating the point Brandon makes there, or perhaps a different/related point such as the other mods not keeping track of resistance nearly as fast when fire is not pressed, thus losing the precise temp even during a split-second release/re-press of fire.

Anyway I have a bunch of test results along these lines, and more to come, which I hope to post pretty soon.

Well if he's actually reading this thread or at least your PM's, can you ask him how delayed customer inquiries are? I sent an email last week regarding a repair I need and I'm still waiting for a reply if I should just throw it in a bin or send it back?

Regards
Tony

 

[dwcraig1]

I guess I'll figure it out when it arrives later today but I have to charge it some, how do I know when it's finished charging?. I'm not sure if it has red/green lights ect.

 

[retird]

I guess I'll figure it out when it arrives later today but I have to charge it some, how do I know when it's finished charging?. I'm not sure if it has red/green lights ect.

There is a lightning bolt in the battery meter while charging....it will go away when fully charged...if vaping while charging the bolt will go away while firing and return in about 5 seconds after firing....

 

[retird]

And if you want you can open the Device Monitor in EScribe and see the charging progress in live time (upper left corner of the screen)....

 

[tchavei]

Well if he's actually reading this thread or at least your PM's, can you ask him how delayed customer inquiries are? I sent an email last week regarding a repair I need and I'm still waiting for a reply if I should just throw it in a bin or send it back?

Regards
Tony

Guess he does read this thread. I just got a reply and actually a favorable one [emoji106]

Regards
Tony

Sent from my keyboard through my phone or something like that.

 

[druckle]

Guess he does read this thread. I just got a reply and actually a favorable one

Regards
Tony

Sent from my keyboard through my phone or something like that.

Ah ha, actually it does happen on the DNA 40, as I have just been reliably informed via Brandon @ Evolv's watchful eye on this thread

He PM'd me on the Evolv forum earlier today asking for the full details of what I was hoping to see regarding Static Resistance in Profiles (so that we can enter the measured Static Resistance of a given atomizer, and enter this in a Profile, thus creating profiles for specific Atomizer+Wire-Type combos, giving the most accurate possible TC for each combo.) He mentioned at the time that he's not allowed to post in this thread (and presumably most others) as he's a registered vendor account.

Following that, just now I got another PM from him regarding the question we've been discussing. EDIT: I'll paraphrase rather than direct quote, just in case a direct quote is in violation of the above rule

The Evolv chips do read resistance 'in real time' in both vw/temp modes. They've been doing that since the Darwin in 2010. The chip reads resistance and make adjustments during firing to any variation in resistance 'many many many' times per second to maintain constant power output. Any Evolv product would give constant power vaping when using Resistherm (and Titanium or any other TC wire) in VW mode.

Further, he believes it's possible that competing chips/mods can't read resistance and fire at the same time hence giving a 'stutter vape' in temp mode.

So there you have it Sounds like a decent benefit of the Evolv chips, and something to compare others against. I certainly have experienced 'stutter vapes' as he calls it on some cheap DNA 40 clones, but I haven't personally noticed it on the premium competition (Yihi, Dicodes.) I'll see if I can think of a way to empirically test mods for that behaviour.

What I have noticed is that in my extended temp tests, where I hold down the fire button down for as long as possible until just before time-out, then re-press it immediately and repeat, the DNA 40 usually does not change its temp at all. Looking afterwards at a graph of temp output, I can't tell where I pressed/re-pressed the fire button, because it just keeps firing at the same temp. That's a noticeable improvement over many other mods, where there's peaks and troughs associated with each re-press of fire. That may be demonstrating the point Brandon makes there, or perhaps a different/related point such as the other mods not keeping track of resistance nearly as fast when fire is not pressed, thus losing the precise temp even during a split-second release/re-press of fire.

Anyway I have a bunch of test results along these lines, and more to come, which I hope to post pretty soon.

Have you had a chance to explore Titanium wire with the DNA 200 Tom? The sophisticated control characteristics of the DNA 200 have me fascinated to see how it might perform with a proper adjustment for atomizer static resistance and a precise titanium TCR curve.

The machine performs so well with nickel that it has me panting to see what my favorite titanium wire might yield.

Duane

 

[tchavei]

Have you had a chance to explore Titanium wire with the DNA 200 Tom? The sophisticated control characteristics of the DNA 200 have me fascinated to see how it might perform with a proper adjustment for atomizer static resistance and a precise titanium TCR curve.

The machine performs so well with nickel that it has me panting to see what my favorite titanium wire might yield.

Duane

We need to build a csv file for Titanium grade 1

Regards
Tony

Sent from my keyboard through my phone or something like that.

 

[soulseek]

Just fyi, Boxer is making a DNA200 cradle. His buttons on the SX350J Boxer rock, so I'd expect similar quality.

Wow very interesting !!!

I'm hoping this will be out soon.

 

[druckle]

We need to build a csv file for Titanium grade 1

Regards
Tony

Sent from my keyboard through my phone or something like that.

Absolutely agree. Tom is our DNA 200 guru and the expert go-to guy.
I know he's going to come through with the best Ti csv possible.
Nudge...Nudge.

Duane