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Breaktru Forum  |  eCigarette Forum  |  Modding  |  Topic: DNA 12 Evolv w/ an MCU
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Author Topic: DNA 12 Evolv w/ an MCU  (Read 83120 times)

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Online Breaktru

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DNA 12 Evolv w/ an MCU
« on: May 16, 2012, 02:50:32 PM »
Para from ECF gave my name to Brandon from Evolv to try out their new DNA module in a mod. Thanks very much Para.

These are preliminary tests of the new Evolv DNA 12 module.
Testing right now with (2) paralleled 18650 Trustfires but will later use (2) Li-Po 20c batteries.
The Trustfires are under rated for the DNA as you can see by the Battery Level readings. Voltage drops from 4.17v to 3.27v Definitely need higher "C" rating batteries as per  DNA spec sheet.

Battery update: Using my Li-Po's on it and it only dropped Four Hundreds of a volt (0.04v) on battery input.

I have found that the Voltage, Amperage and Wattage readings fluctuate considerably while holding down the fire button.
I have coded to calculate V, A and Watts every 1000ms (1second).
With two 20c Li-Pos in parallel, the highest wattage achieved is 10.68 watts. Starts at 9.68 watts and fluctuates to values in between to max of 10.68.
With one 20c I get slightly lower max of 10.02 watts.

Update on wattage: On occasion I get over 11 watts. I've gotten 11.58watts but I can not achieve it every time. It is NOT consistent.
Update II: I was using the beta test model. A newer version has been released that can achieve 12 watts.

As per datasheet 3.3 ohms should get you 12 watts but I tried a 3.3 ohm atty and only get 9.7 watts.
I also notice that it was a pulsed output. I can hear the atty pulsing on and off.

This is weird: Wanted to see if I see a red err LED on the DNA so I tried the 3.3 ohm atty again and got NO pulsing and get 10.38 watts. Still fluctuating readings. NO red LED indicating.
Fluctuation is pretty wide in range and can vary from a tenth of a watt to as much as over a watt.

I understand that VW maintains wattage with the load. Resistance of atty may vary and the DNA adjusts accordingly to maintain the set wattage. But........ Wattage readings should NOT fluctuate.
Also most of my testing is with a fixed load. A Ceramic 20 watt resistor. No resistance variation should occur.

Right now my highest wattage is 10.68w. Mamu and BigFran was able to get 11w by shorting up on the battery wires.
Sometimes that is not practical when using a particular enclosure due to the placement of batteries. My batteries are soldered so batt contacts is not an issue. I am using 20ga wires on power connections.

I'm not concerned with getting more wattage. I like tasting my juice and not sizzle it. With the juice I'm using, anything over 7watts is harsh and tastes burnt.




« Last Edit: August 04, 2013, 01:54:37 PM by Breaktru »

Offline theDom

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Re: DNA 12 Evolv w/ an MCU
« Reply #1 on: May 16, 2012, 07:37:55 PM »
Holy crap batman. That is amazing for a novice like me.
Well done breaktru  :rockin smiley:

Offline Aromaz

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Re: DNA 12 Evolv w/ an MCU
« Reply #2 on: May 17, 2012, 10:44:08 AM »
Fantastic work breaktru, well done  :beer-toast:

Offline Pantera

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Re: DNA 12 Evolv w/ an MCU
« Reply #3 on: May 17, 2012, 10:49:27 AM »
Well done my man!

It makes NO sense to put that DNA unit in a mod without a display, or am I missing something.
What you did with the display, IMHO is what the DNA was intended to be used with. Some sort of display. What would be the point of guessing the wattage output?
 :thumbsup:

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Re: DNA 12 Evolv w/ an MCU
« Reply #4 on: May 18, 2012, 04:19:50 PM »
See updates to original post............

Offline Pantera

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Re: DNA 12 Evolv w/ an MCU
« Reply #5 on: May 18, 2012, 04:23:13 PM »
Looking at your comment about the wattage fluctuation, I agree that a variable wattage unit should not fluctuate wattage.

Offline Brian9523

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Re: DNA 12 Evolv w/ an MCU
« Reply #6 on: May 18, 2012, 06:48:30 PM »
How would one connect two DNAs for 24 watts like Brandon stated in the video?

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Re: DNA 12 Evolv w/ an MCU
« Reply #7 on: May 18, 2012, 07:32:07 PM »
How would one connect two DNAs for 24 watts like Brandon stated in the video?

I'm assuming you would parallel all the pins. Is it worth it? I got mine for free but would I spend $35 or $70 for two.... NO
I would buy a 30watt board for a lot less. Like the 08100w or OKR-T/10.

All this hype on Variable Wattage as being the BEST, in my opinion is overrated. Yeah but you can swap attys without readjusting wattage.
So what. If you are using a Display that reads wattage, what's the big deal to readjust. How often do you do that?
In 0.2 seconds I can readjust.
Maybe a V.W. is useful if you DON'T have a display but with one, you can see the wattage.

Offline timesarerough

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Re: DNA 12 Evolv w/ an MCU
« Reply #8 on: May 19, 2012, 10:04:43 AM »
Excellent point, D!  :yes"

Offline CraigHB

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Re: DNA 12 Evolv w/ an MCU
« Reply #9 on: May 19, 2012, 01:20:09 PM »
Fully agree with that.   Why pay $70 for something you can get for a tenth that with the only requirement you manually adjust instead of automatically.

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Re: DNA 12 Evolv w/ an MCU
« Reply #10 on: May 19, 2012, 01:59:45 PM »
Fully agree with that.   Why pay $70 for something you can get for a tenth that with the only requirement you manually adjust instead of automatically.

Yup. if you have wattage displayed, what's the big deal adjusting it? Well... got it for nothing so I went with it.

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Re: DNA 12 Evolv w/ an MCU
« Reply #11 on: May 19, 2012, 03:07:24 PM »
I like the second black one better. I scrapped the first box.

« Last Edit: November 05, 2013, 06:41:30 PM by Breaktru »

Offline jd4x4

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Re: DNA 12 Evolv w/ an MCU
« Reply #12 on: May 19, 2012, 05:24:09 PM »
Dave- curious if you know (otherwise I'll ask Evolve).. I assume that the charger connections on the module simply tie into the battery connections and require an 'intellegent' charger (ie there is NO charging chip/circuit on the module itself)?

And I guess I have a different take on using a watt controller vs a voltage controller. I don't really care what a dial (or a display) says because I'm going to change it according to my juice & mood anyway. Having a circuit that gives me the additional benefit of not needing to tweak it too much when I grab a different carto and (hopefully) keeps my desired vape preference for a wider range of other variables is well worth $36.50 plus batts, box, & hardware, imo. In theory.

I'll find out soon enough though, as my chip came in the mail today!  :thumbsup:

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Re: DNA 12 Evolv w/ an MCU
« Reply #13 on: May 19, 2012, 06:07:20 PM »
Can't wait to see your build.

I asked Brandon over at Evolv the other day what the advantage of the Charger Pins where compared to just hooking it up to the battery and he replied back that it is the same connection. Just the convenience of a spot to hook on to.

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Re: DNA 12 Evolv w/ an MCU
« Reply #14 on: May 19, 2012, 06:12:16 PM »
If I didn't use the li-po's I would have been able to get this in a much smaller box. But the 20's are nice to have. The display looks lost on the front panel.

Offline jd4x4

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Re: DNA 12 Evolv w/ an MCU
« Reply #15 on: May 19, 2012, 09:59:28 PM »
Can't wait to see your build.

I asked Brandon over at Evolv the other day what the advantage of the Charger Pins where compared to just hooking it up to the battery and he replied back that it is the same connection. Just the convenience of a spot to hook on to.
Thanx for the info. I had a feeling you'd asked already.
I don't think my build will be very interesting.. thinking of seeing how much batt I can stuff into a Revolution V2 case that I changed over to 808D. Probably close off the open squeeze bottle hole, see if I can put the pot where the 'ufo' lights are currently.

Sitting here typing, I'm thinking maybe I can make 3 little decals for the pot ...    :)  ..  :laughing:  ..  :laughing2:
and then just use the other 3 existing V2 leds for the batt indicator.
« Last Edit: May 19, 2012, 10:03:52 PM by jd4x4 »

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Re: DNA 12 Evolv w/ an MCU
« Reply #16 on: May 20, 2012, 11:20:21 AM »
For those of you who do not know what the DNA is, here is a video of the creator talking about it.

GO TO Timeline 0:49:50 for the start of the interview: http://youtu.be/klsEJj5I1zY?t=49m50s



http://youtu.be/klsEJj5I1zY?t=49m50s

« Last Edit: October 04, 2012, 07:15:43 PM by Breaktru Admin »

Offline Dznutz

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Re: DNA 12 Evolv w/ an MCU
« Reply #17 on: May 20, 2012, 12:05:16 PM »
So let me ask you, what do you think of it?   

I like the fact you can stack boards for more power  :thumbsup:

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Re: DNA 12 Evolv w/ an MCU
« Reply #18 on: May 20, 2012, 12:17:04 PM »
So let me ask you, what do you think of it?   

I like the fact you can stack boards for more power  :thumbsup:

I think maybe what I stated in Reply #7 will help
http://breaktru.com/smf/index.php/topic,588.msg3770.html?PHPSESSID=9089794cedd9b17e28410a72e3cc526a#msg3770

Offline Dznutz

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Re: DNA 12 Evolv w/ an MCU
« Reply #19 on: May 20, 2012, 12:23:54 PM »
Dang it I over looked that whole part of the post and dont know why :wallbash:, I read everything else.   :facepalm:
« Last Edit: May 20, 2012, 02:08:29 PM by Dznutz »

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Re: DNA 12 Evolv w/ an MCU
« Reply #20 on: May 22, 2012, 07:50:27 PM »
Can't wait to see your build.

I asked Brandon over at Evolv the other day what the advantage of the Charger Pins where compared to just hooking it up to the battery and he replied back that it is the same connection. Just the convenience of a spot to hook on to.

I found a disadvantage to using the charge pins on the DNA, at least on my setup.
By using the pins, the circuitry is live. I don't want to use diodes to block the reverse feed so I chose to break the charger negative side to the on/off 3rd pin of the on/off switch.

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Re: DNA 12 Evolv w/ an MCU
« Reply #21 on: May 23, 2012, 02:40:26 PM »
With the right camera distance the display looks pretty clear:





Not so clear but over 11 watts. Max was 11.58 watts.





USB charging:


Offline Topper

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Re: DNA 12 Evolv w/ an MCU
« Reply #22 on: May 23, 2012, 03:15:22 PM »
Just tree words - It is amazing!
So close to the absolute perfection.
Now we just need undestructable atomizer ;)

Offline FluGlone

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Re: DNA 12 Evolv w/ an MCU
« Reply #23 on: May 23, 2012, 05:57:20 PM »
Magnificent mod  ;hubba; Now that's a lot of mod for a gal. But I can handle it.... I think.  :laughing2:
You can send that to me and I'll test it out for ya  :yes"

Offline Squance

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Re: DNA 12 Evolv w/ an MCU
« Reply #24 on: May 24, 2012, 07:11:11 PM »

USB charging:



Did you use the same USB charger that you used in your first microcontroller mod?
And how did you get the red LED to display on the outside?  :Thinking:

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Re: DNA 12 Evolv w/ an MCU
« Reply #25 on: May 24, 2012, 07:28:38 PM »

Did you use the same USB charger that you used in your first microcontroller mod?
And how did you get the red LED to display on the outside?  :Thinking:

Yes I did. Same charger except this is a mini USB port and the other was a micro USB port. I put a length of clear 0.80 monofiliment line over the on-board smd LED and poked it thru a drilled hole to see it.
Like a Fiber Optic type effect. The LED is actually about an inch away or more from the outside hole. Worked out great.

Offline vaporhead

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Re: DNA 12 Evolv w/ an MCU
« Reply #26 on: May 29, 2012, 05:31:42 PM »
Yes I did. Same charger except this is a mini USB port and the other was a micro USB port. I put a length of clear 0.80 monofiliment line over the on-board smd LED and poked it thru a drilled hole to see it.
Like a Fiber Optic type effect. The LED is actually about an inch away or more from the outside hole. Worked out great.

I would love so much to be able to build something like this. If only you could put out a kit, I would be thrilled to death.

Offline banshee

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Re: DNA 12 Evolv w/ an MCU
« Reply #27 on: May 30, 2012, 01:27:52 PM »
How cool would that be, a mcu mod kit or a circuit board with a wiring diagram...  :applaude:
I have been following your mods breaktru and as always love this one as well.

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Re: DNA 12 Evolv w/ an MCU
« Reply #28 on: June 03, 2012, 01:54:50 PM »
Can't wait to see your build.

I asked Brandon over at Evolv the other day what the advantage of the Charger Pins where compared to just hooking it up to the battery and he replied back that it is the same connection. Just the convenience of a spot to hook on to.

I was wondering about the charger pins. thanks for the explanation. I thought it had a charging circuit built in but now I know better.
I was thinking about using maybe a 1 amp charger for a faster charge instead of a 500ma one.

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Re: DNA 12 Evolv w/ an MCU
« Reply #29 on: June 03, 2012, 02:23:15 PM »
I picked up a couple of chargers on ebay that has to be hacked by changing a resistor for a 1 amp charge rate. See datasheet: http://www.google.com/url?sa=t&rct=j&q=tp4056&source=web&cd=1&ved=0CFIQFjAA&url=http%3A%2F%2Fwww.vitexic.com%2Fdata%2FTP4056Eng.pdf&ei=_KrLT-z8PMbF6gGmvd3uDw&usg=AFQjCNEJoISKgFcJsFKPmoNKxSCITp8DcA&cad=rja

I kinda like my 500ma because it is a smarter charger. See datasheet: http://www.sparkfun.com/datasheets/Prototyping/Batteries/MCP73831T.pdf

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Re: DNA 12 Evolv w/ an MCU
« Reply #30 on: June 03, 2012, 03:12:12 PM »
Isn't the 500mA charge current optimal fast charge for Li cells ? Above that is posible (1C-2C) but this will shorten life of the battery?
I know golden rule - slow charge => slow discharge => long live :)

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Re: DNA 12 Evolv w/ an MCU
« Reply #31 on: June 03, 2012, 06:13:07 PM »
Isn't the 500mA charge current optimal fast charge for Li cells ? Above that is posible (1C-2C) but this will shorten life of the battery?
I know golden rule - slow charge => slow discharge => long live :)

I don't think 1 amp charge rate would hurt even for a single batt. I'm using 2x Li-Po batteries and that would be 500mah per cell.
The charger is made for Li-ion and Li-po batteries w/ output of 4.2v and the charge current can be selected by changing the resistor as follows:

Rprog Current Setting
RPROG - IBAT
(k)      -   (mA)
10           130
5             250
4             300
3             400
2             580
1.66        690
1.5          780
1.33        900
1.2         1000


The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor. The
TP4056 automatically terminates the charge cycle when the charge current drops to 1/10th the
programmed value after the final float voltage is reached.
« Last Edit: June 20, 2014, 01:31:37 PM by Breaktru »

Offline cccsteel

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Re: DNA 12 Evolv w/ an MCU
« Reply #32 on: June 10, 2012, 09:40:25 PM »
very impressive. good work. I would love to own one just like this mod  ;hubba;

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Re: DNA 12 Evolv w/ an MCU
« Reply #33 on: June 15, 2012, 07:15:29 PM »
I've gone through several charging cycles now and have found that two parallel 1000mah, 20c li-pos take exactly 4 ½ hours to fully charge with the 500ma charger.

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Re: DNA 12 Evolv w/ an MCU
« Reply #34 on: June 16, 2012, 03:03:30 AM »
And how long they last in vaping (according your style of vape of course)

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Re: DNA 12 Evolv w/ an MCU
« Reply #35 on: June 16, 2012, 08:43:31 AM »
And how long they last in vaping (according your style of vape of course)

They go from 4.17v (100%) to 3.20v (0%) in 2½ to 3 days.

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Re: DNA 12 Evolv w/ an MCU
« Reply #36 on: June 16, 2012, 08:58:21 AM »
WoW it's amazing live time for vaping  :rockin smiley:   :beer-toast:

Offline jmarkus

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Re: DNA 12 Evolv w/ an MCU
« Reply #37 on: June 18, 2012, 08:28:15 PM »
hey break,

do you know if i can use this charger:
http://www.sparkfun.com/products/10401

with this battery, 3.7V 1200mAh 20C Lipo Li-polymer:
http://www.ebay.com/itm/320892649444?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649


wondering if i can use the charger without any modding with the single cell above using the dna charging terminals?

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Re: DNA 12 Evolv w/ an MCU
« Reply #38 on: June 18, 2012, 08:59:24 PM »
hey break,

do you know if i can use this charger:
http://www.sparkfun.com/products/10401

with this battery, 3.7V 1200mAh 20C Lipo Li-polymer:
http://www.ebay.com/itm/320892649444?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

wondering if i can use the charger without any modding with the single cell above using the dna charging terminals?

Yes. that is the same charger I'm using.

Offline jmarkus

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Re: DNA 12 Evolv w/ an MCU
« Reply #39 on: June 18, 2012, 09:19:46 PM »
thanks so much man. thought so and had ordered 3 of each (batteries and chargers) but wanted to make sure.

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Re: DNA 12 Evolv w/ an MCU
« Reply #40 on: June 18, 2012, 09:23:04 PM »
should i go battery out to battery in on dna and charger board out to charger in on dna?

would there be a different or better setup like going battery out to charger board and then charger board to battery or charger in on dna? will it work as a passthrough in any scenario?
« Last Edit: June 18, 2012, 09:28:08 PM by jmarkus »

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Re: DNA 12 Evolv w/ an MCU
« Reply #41 on: June 18, 2012, 09:44:10 PM »
should i go battery out to battery in on dna and charger board out to charger in on dna?

would there be a different or better setup like going battery out to charger board and then charger board to battery or charger in on dna? will it work as a passthrough in any scenario?

For convenience I went battery to DNA battery terminals and charger to DNA charger terminals.
According to Brandon, the the Charger terminals on the DNA is the same as the battery terminals.

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Re: DNA 12 Evolv w/ an MCU
« Reply #42 on: June 18, 2012, 09:51:32 PM »
will it work as a passthrough in any scenario?

The charger puts out 500ma so if your battery is low, a half amp is not going to power an atty. If you have some life in the battery you should be able to vape as the battery will supply the needed amperage.

Offline jmarkus

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Re: DNA 12 Evolv w/ an MCU
« Reply #43 on: June 18, 2012, 10:43:02 PM »
very cool...amazing info. so if i decide to go battery out to charger board in and charger board out to battery in on dna it should work just the same?

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Re: DNA 12 Evolv w/ an MCU
« Reply #44 on: June 18, 2012, 10:59:09 PM »
very cool...amazing info. so if i decide to go battery out to charger board in and charger board out to battery in on dna it should work just the same?

There is NO IN connection on the charger board. The technical IN is the USB jack connection. The (+) and (-) points are the same as the battery jack on the charger so you can connect straight to the battery and there is NO need to connect the charger to the DNA at all.

Offline jmarkus

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Re: DNA 12 Evolv w/ an MCU
« Reply #45 on: June 18, 2012, 11:05:47 PM »
this is what i meant:


sorry for being thick...:)

ok, or no?
« Last Edit: June 18, 2012, 11:31:40 PM by jmarkus »

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Re: DNA 12 Evolv w/ an MCU
« Reply #46 on: June 19, 2012, 06:34:20 AM »
this is what i meant:

sorry for being thick...:)

ok, or no?

OK, Yes

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Re: DNA 12 Evolv w/ an MCU
« Reply #47 on: July 17, 2012, 01:00:13 PM »
Soon Evolv will start selling a USB charging module for their DNA.
I received two Micro USB charger boards a couple of days ago from Brandon for testing.
Nice and tiny. I don't have the spec's on it but I am thinking it maybe 500mah.
Here is a size comparison with the two others I have used.


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Re: DNA 12 Evolv w/ an MCU
« Reply #48 on: July 17, 2012, 10:02:22 PM »
In the photos above, the red USB charger (500mah) takes 2 hours to charge a single 20C, 1000mah Li-Po.
Using the Evolv DNA charger I pulled the battery off after 5 hours. Red charging light remained lit. The battery started out at 3.4v and after 5 hrs measured 3.8v. Fully charged, this battery usually measures 4.17v
During charging I measured the amperage rate at 0.8uA (micro amps). This is suppose to be a 500mah charger according to the DNA datasheet.

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Re: DNA 12 Evolv w/ an MCU
« Reply #49 on: July 18, 2012, 01:29:52 AM »
Sounds like you got a dud.

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