Another board to contend with, the DNA 75c

[cigatron]

This 9V crap is a limitation of batteries, not the chip. You are having low battery warnings because these are single cell devices (or rather NOT series because you can put in parallel batteries like the Therion dna 75). Pushing that much voltage on a boost converter draws so much amperage out of the battery that you have huge voltage drops. Evolv has simply limited you to not being able to drop voltage down to the range under load that you'll damage the cell. If you want 9Vs you ain't gonna want a DNA75c or otherwise because it's a single cell device. Buy a DNA 200/250 board (in 133 trim if you want) and you can do the 9V without the huge voltage drops due to the series setup. You'll STILL run outta battery in a major hurry if you're trying to push high voltages through it, it's just a highly inefficient way to generate wattage - kinda like towing a large trailer with a 4 banger reved up to 5000RPM.

All true but I do not experience the problem mongo has with my builds and batteries.
From what I've heard Evolv is increasing the output voltage from 6v to 9v to extend the usable res range for builds, to stop the "res too high" error message on higher ohm builds, not to stop the "weak battery" error message.
The limited res range has affected my TC builds where I try to run larger Ti and NiFe coils in single coil attys, those types of wires with higher TCR values and cold res, so I welcome the higher output voltage.

 

[BillLee3]

All true but I do not experience the problem mongo has with my builds and batteries.
From what I've heard Evolv is increasing the output voltage from 6v to 9v to extend the usable res range for builds, to stop the "res too high" error message on higher ohm builds, not to stop the "weak battery" error message.
The limited res range has affected my TC builds where I try to run larger Ti and NiFe coils in single coil attys, those types of wires with higher TCR values and cold res, so I welcome the higher output voltage.

Yes and no. The primary way of being informed you're exceeding the 6V limit is to get an Ohms too High error message with a full battery. Per the documentation - Ohms Too High: The resistance of the atomizer coil is too high for the current wattage setting. If this happens, the DNA will continue to fire, but will not be able to provide the desired wattage. The Ohms Too High message will continue to flash for a few seconds after the end of puff.

However, you ALSO get Ohms Too High when the device is unable to output the wattage you are requesting because the voltage drop on the battery is high enough that it can't meet your set wattage without going below the cell cut off. They SHOULD have called the second problem Weak Battery and I do agree that these are slightly different problems. However, the error message is the same and if you're attempting to output 9V from a single cell 3.7 nominal battery you're gonna have so much voltage drop you'll only be able to do it for a VERY short period of time before you get what would more appropriately be called a weak battery.

It doesn't affect my builds or mods because I build around it, but I don't attempt to put >40W into a 1 ohm coil. In fact I normally build around 0.2-0.5. I can see wanting slightly over 6V so you can output ~40W into a 0.6 SS clapton coil, but be aware you're gonna use up the battery quickly boosting it like that.

 

[Sptz]

Wait for the 250c in 166 trim (i.e. dual 18650) if you're really concerned with battery life. Parallel helps because you have two batteries you're drawing from and halving the voltage drop, but it's still dropping below the safe levels Evolv allows much quicker when boosting wattage upward instead of bucking it down. Instead, the series setup of a DNA 250 at 7.4V nominal (with dual 18650s) bucking down to the 3-6V you're probably wanting to run will improve battery life tremendously. The 75 is my favorite chip by them because I like the size of a single cell, but it's not their most battery efficient by a long shot.

But having to shell for a 250C mod just for battery life though :/

 

[cigatron]

Yes and no. The primary way of being informed you're exceeding the 6V limit is to get an Ohms too High error message with a full battery. Per the documentation - Ohms Too High: The resistance of the atomizer coil is too high for the current wattage setting. If this happens, the DNA will continue to fire, but will not be able to provide the desired wattage. The Ohms Too High message will continue to flash for a few seconds after the end of puff.

However, you ALSO get Ohms Too High when the device is unable to output the wattage you are requesting because the voltage drop on the battery is high enough that it can't meet your set wattage without going below the cell cut off. They SHOULD have called the second problem Weak Battery and I do agree that these are slightly different problems. However, the error message is the same and if you're attempting to output 9V from a single cell 3.7 nominal battery you're gonna have so much voltage drop you'll only be able to do it for a VERY short period of time before you get what would more appropriately be called a weak battery.

It doesn't affect my builds or mods because I build around it, but I don't attempt to put >40W into a 1 ohm coil. In fact I normally build around 0.2-0.5. I can see wanting slightly over 6V so you can output ~40W into a 0.6 SS clapton coil, but be aware you're gonna use up the battery quickly boosting it like that.

Do you know how much efficiency is lost by boosting to 9v vs. 6v? I don't but remember that higher res coils that would need higher than 6v would also draw less current at equivalent wattage ie more current drawn to boost voltage but less current drawn by the coil itself.
I've often wondered about this topic, efficiency losses with boost.

 

[Khanninnarh]

The level of sophistication of vaping reviews is astonishing... with a few exceptions.

In fact, I take them with a whole fist full of salt nowadays. The big guys are the worst. This forum is much better [emoji3] for insights on products.


Sent from my iPhone using Tapatalk

 

[andreariana]

wow...another one from evolve??
but only dna75c ?????
what about the dna250c ?????
this is "wattism"!!! c'mooonn really.....

 

[Eskie]

wow...another one from evolve??
but only dna75c ?????
what about the dna250c ?????
this is "wattism"!!! c'mooonn really.....

Patience, grasshopper.

 

[Tpat591]

wow...another one from evolve??
but only dna75c ?????
what about the dna250c ?????
this is "wattism"!!! c'mooonn really.....

LOL.

DNA75c is essentially an up wattage DNA60 on a full sized board which allowed much more space to incorporate more memory, processing, & components to accommodate the new GUI improvements. Incorporating the same features on a 250 is much more challenging to engineer. Not saying it can't be done, but it takes much more creativity, logistics & time to do.

 

[louiesquared]

LOL.

DNA75c is essentially an up wattage DNA60 on a full sized board which allowed much more space to incorporate more memory, processing, & components to accommodate the new GUI improvements. Incorporating the same features on a 250 is much more challenging to engineer. Not saying it can't be done, but it takes much more creativity, logistics & time to do.

According to the interview with Phil Busardo the 250C was already finished before the August 8th deadline. They will probably wait until DNA250 stock is low before releasing the 250C.

 

[Eskie]

According to the interview with Phil Busardo the 250C was already finished before the August 8th deadline. They will probably wait until DNA250 stock is low before releasing the 250C.

You're already seeing flash sales on DNA 75 based mods. I'm sure Evolv is not looking to hurt their manufacturers by leaving them with unsold merchandise. However, I have no doubt it's coming reasonably soon, and as I have several DNA mods, I'm quite comfy waiting it out. Might even grab another Therion or something on a clearance special if/when the 250c is close to the market.

 

[batteredwombat]

Yep, designed obsolescence can pull milk from a dry udder.

Hhahaha, wise old toad says it best! With all the unreleased stuff by evlov I wonder if they have a 350 or higher waiting for just before august 2018. To me its not the watts, but rather efficiency, temp accuracy, and size factor. I wish someone would test dicodes fl80 vs dna250 in temp accuracy.

 

[Tpat591]

According to the interview with Phil Busardo the 250C was already finished before the August 8th deadline. They will probably wait until DNA250 stock is low before releasing the 250C.

LOL!

Yeah I saw that too!

I got a lovely Bidge for sale if your interested.

He took the letter of the law & found a way. More power to him. Good for us!

 

[andreariana]

You're already seeing flash sales on DNA 75 based mods. I'm sure Evolv is not looking to hurt their manufacturers by leaving them with unsold merchandise. However, I have no doubt it's coming reasonably soon, and as I have several DNA mods, I'm quite comfy waiting it out. Might even grab another Therion or something on a clearance special if/when the 250c is close to the market.

well chinese manufacturer must hav thousands of dna250 chip on them, they always purchase in BUULK, so that means we will see dna250c chip after those manufacturer sold 90% of their dna250 products?

then it settled, dna250c will be a christmas present to the vaping world

LOL.

DNA75c is essentially an up wattage DNA60 on a full sized board which allowed much more space to incorporate more memory, processing, & components to accommodate the new GUI improvements. Incorporating the same features on a 250 is much more challenging to engineer. Not saying it can't be done, but it takes much more creativity, logistics & time to do.

so its not a dna75 board?? but the size is similar to dna75 board
if it really is a blown up dna60 chip, then i wonder how big would be a dna250c chip
i love my finder250 and rebel250 which using triple 18650, but if the size get much bigger than those mods, i guess i'll just get another finder250
take example the boxer250, its ugly as hell, so gigantic, its like holding a giant out of shape std infected balls
on the other hand finder250 and rebel250 are much more ergonomic, and they're all using triple 18650

what im trying to say here, size does matter, if the form factor of dna250c chip is too big, i dont think they would do as good as their previous dna250 chip on the market

 

[retird]

Just for size comparison..... DNA75 Alpha Test device vs. DNA75 Color Alpha Test device.... and a 30 ml. bottle...

 

[Tpat591]

so its not a dna75 board?? but the size is similar to dna75 board
if it really is a blown up dna60 chip, then i wonder how big would be a dna250c chip
i love my finder250 and rebel250 which using triple 18650, but if the size get much bigger than those mods, i guess i'll just get another finder250
take example the boxer250, its ugly as hell, so gigantic, its like holding a giant out of shape std infected balls
on the other hand finder250 and rebel250 are much more ergonomic, and they're all using triple 18650

what im trying to say here, size does matter, if the form factor of dna250c chip is too big, i dont think they would do as good as their previous dna250 chip on the market

In the Busardo vid Branden said the 75C was an up wattaged DNA60 architecture on the larger board adding processing, memory, & display components.

I would imagine that the goal is to place similar components on the 250 format board without upsizing the board but obviously that is more challenging & would require fabrication of different component architecture or component layout on the board requiring more lead time, but component sizing is getting smaller & capabilities of those newer components tend to increase but I am not in Beta program & those that are are under NDA & cannot tell us what they know. I'm only guessing here but it seems logical. Perhaps I should not have said anything but I was hoping to inject some more realistic expectations.

 

[andreariana]

In the Busardo vid Branden said the 75C was an up wattaged DNA60 architecture on the larger board adding processing, memory, & display components.

I would imagine that the goal is to place similar components on the 250 format board without upsizing the board but obviously that is more challenging & would require fabrication of different component architecture or component layout on the board requiring more lead time, but component sizing is getting smaller & capabilities of those newer components tend to increase but I am not in Beta program & those that are are under NDA & cannot tell us what they know. I'm only guessing here but it seems logical. Perhaps I should not have said anything but I was hoping to inject some more realistic expectations.

well me myself rarely go above 100w, but most of the time i do go above 75w
just make 120w or 150w board if that helps to maintain the form factor of the board
what i love from dna250 are the battery life using 3x18650 and the ability to go above 75w

 

[cigatron]

well me myself rarely go above 100w, but most of the time i do go above 75w
just make 120w or 150w board if that helps to maintain the form factor of the board
what i love from dna250 are the battery life using 3x18650 and the ability to go above 75w

It's a battery thing unless you want to use Lipos. A single 18650 is good for around 75W, dual 18650 around 150. The DNA 200 serves dual purpose (166w/200w) and is not that much bigger than the dna75 board imo. Buy a 166w if you run over 75w but never need over 150w.
At any rate the battery requirements will determine the size of the mod more than the board.

 

[andreariana]

It's a battery thing unless you want to use Lipos. A single 18650 is good for around 75W, dual 18650 around 150. The DNA 200 serves dual purpose (166w/200w) and is not that much bigger than the dna75 board imo. Buy a 166w if you run over 75w but never need over 150w.
At any rate the battery requirements will determine the size of the mod more than the board.

no no no... you got me wrong...
i dont mind using 3x18650 , as matter of fact i love them
the size here is the board's sizes

evolve using powered up dna60 board to create dna75c
dna60 board are really really tiny, and yet it got blown up full size when it transform into dna75c because it needs to accomodate another memory banks, another processing board i guess, and etc

thats why i wonder if evolve struggle with the size of the new dna250c board, because we are all know dna200/250 board are already a full size board unlike dna60's

if by reducing the power capability to 120w or 150w would help with the size, well me personally really dont mind bcause i rarelly go above 100w anyway

maybe if they use 2 board that would help
use 1 fullsize board and 1 mini board
or use 3 little board like what ijoy maxo did

i dont mind about the size of the mods, as long they're not to big
finder250 and rebel250 are right on the edge
while boxer250 classic are to big, maybe because it is really uncomfortable to hold, thats why i dont like it, sold mine just after 3 days of use

 

[andreariana]

Just for size comparison..... DNA75 Alpha Test device vs. DNA75 Color Alpha Test device.... and a 30 ml. bottle...



View attachment 656433 View attachment 656435

dare i ask where you get that mods from?
they looks like build to last
i bet they can take a beating no problem

 

[retird]

Google Silo DNA200... DNA75 Color just now coming out so not much yet... here are a few hits from Google...


Silo billet aluminum DNA-200D mod case

Protovapor Silo DNA-250D