Evolve DNA 12 preliminary Testing w/ MCU and OLED Display

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breaktru

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this could be a stupid question but immana ask anyway, can you cross the negative side battery, negative switch and negative output lines. I only ask because there is only one negative line in the V-mod.

Hey Tony from Mars,
Can you be more precise. Not sure what you mean. Sorry
 

tonyfalkon

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Hey Tony from Mars,
Can you be more precise. Not sure what you mean. Sorry

After looking at it further last night I think it gets more complicated if I put a dna 12 in the Vmod XL. The problem I see first is space and even if I replace it with a 4.5ml bottle the second problem is wiring. The Vmod wiring is so simple that it looks like a squared tube mod meaning one positive running from the atty to the switch and one negative running from atty to the battery negative terminal. As shown in the picture below, I guess its easier to fit a kick in there.

vmod.jpg

Sorry about the multiple photos attached I don't know how to delete the other ones below
 

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breaktru

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I guess soon Evolv will start making a USB charging module available for their DNA.
I received two Micro USB charger boards a couple of days ago from Brandon for testing.
Nice and tiny. Great size that can be squeezed into a tight spot. The datasheet on the DNA says the charger is rated at 500mah.
Here is a size comparison with the two others I have used.

dna_charger1.jpg
dna_charger2.jpg
 
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Lance_Wallen

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These chargers are said to be the wrong ones as per Brandon.
They were only charging at 0.8uA (micro amps) rather than 500ma. Battery never charged fully and took forever.
Waiting for the correct chargers.

With the new versions I assume this thing is fine for straight wiring without conditioning the voltage as was previously mentioned in this thread I believe?

Also, 10-15C should be suffecient yes? Curious what sort of battery life people are getting out of this board. One of the biggest issues I've had with Darwins is the fact that you can't swap the battery. With the provari if I go nutso vaping and manage to kill a battery in a day I can always have a spare battery hanging around in my juice bag and I'm good to go, without that option you gotta be able to provide plenty of lasting power for people who might not have access to an outlet or USB port 'all the time'. I guess you could carry one of those emergency cellphone rechargers...

Word on the street is the charging circuits should be available in the next couple of days. As soon as those show up I'm gonna get me a few of these and get back to prototyping.
 

breaktru

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With the new versions I assume this thing is fine for straight wiring without conditioning the voltage as was previously mentioned in this thread I believe?

Also, 10-15C should be suffecient yes? Curious what sort of battery life people are getting out of this board. One of the biggest issues I've had with Darwins is the fact that you can't swap the battery. With the provari if I go nutso vaping and manage to kill a battery in a day I can always have a spare battery hanging around in my juice bag and I'm good to go, without that option you gotta be able to provide plenty of lasting power for people who might not have access to an outlet or USB port 'all the time'. I guess you could carry one of those emergency cellphone rechargers...

Word on the street is the charging circuits should be available in the next couple of days. As soon as those show up I'm gonna get me a few of these and get back to prototyping.

Not sure what these new chargers look like or what chip they use. I'll post my results when they come in. There is no Charger datasheet, just a mention that they are 500mah with no mention of the type of chip.

10-15C is plenty of battery for the DNA.
The battery life all depends on you. As a guide: I'm using a single 20C, 1000mah and vape at about 7Watts with moderate vaping and it lasts almost 2 full days.
Battery life will be less of course if your a heavy vaper and vape at 12Watts.

As far as swapping out batteries, that depends on the box you put it in and if you are using connectors on your battery cables. I use JT connectors.
You may want to use a case with magnets on the lid opening for quick easy access.
 

breaktru

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These chargers are said to be the wrong ones as per Brandon.
They were only charging at 0.8uA (micro amps) rather than 500ma. Battery never charged fully and took forever.
Waiting for the correct chargers.

I have the new chargers that Brandon sent and they work well. These are the same exact size and look exactly like the others.
Charging rate is 500mah, actually started at 520mah and slowly declined to Zero when charging was complete.
Red light while charging and and a Green light when completed. Great small size. You can squeeze these in almost anywhere.
 

Thomas Simms

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Well after reading a few pages of this thread im really interesed in doing this.

Breaktru i was wondering what PIC you were using for you OLED? And controller?
I have some electrical experience but my dad is very experienced and we usually work together.
The only thing we dont really know about is C coding. I know there alot of resources online about it and i plan on studying on it the next few days.

I want to start out with just a box vv mod with an OLED display how would i go about doing this? I was reading this thread 1st Attempt w/ a Microcontroller and it seemed to be a good starting point.

Then later i want to try geting a DNA in there.:D
 
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jimbalny

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I have the new chargers that Brandon sent and they work well. These are the same exact size and look exactly like the others.
Charging rate is 500mah, actually started at 520mah and slowly declined to Zero when charging was complete.
Red light while charging and and a Green light when completed. Great small size. You can squeeze these in almost anywhere.

Do we have any data in regards to how the charger input on the DNA board functions? I have a handful of CC/CV charger boards I got off ebay and they seem to work rather well, I noticed that while plugged in and the fire button is pressed it resets the charger back to a blue standby light as opposed to the red charging light. Does this mean that while the fire button is pressed it disconnects the charging input from the battery? Guess it could be a protection feature where the charger doesn't read the battery's under load voltage and keep charging a full battery.

Evolv really should consider adding some sort of functional block diagram to their datasheet, would eliminate most questions like this :)

Those chargers they're selling now are nice and small, though I hate micro-usb! Been struggling with a worn out micro usb port on my evo 4g - thing is so fiddly and falls out constantly.
 

breaktru

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Well after reading a few pages of this thread im really interesed in doing this.

Breaktru i was wondering what PIC you were using for you OLED? And controller?
I have some electrical experience but my dad is very experienced and we usually work together.
The only thing we dont really know about is C coding. I know there alot of resources online about it and i plan on studying on it the next few days.

I want to start out with just a box vv mod with an OLED display how would i go about doing this? I was reading this thread 1st Attempt w/ a Microcontroller and it seemed to be a good starting point.

Then later i want to try geting a DNA in there.:D

Don't use PIC. I use the ATMega328 w/ Arduino Bootloader. Yes it is C coding. There are some easy tutorials by Jeremy Blum

I would start with a simple 16x2 or 8x2 LCD display and then later use a oLED display like I did with the 1st Attempt link.

Being a Newb myself, I did a lot of research before hand. I guess it was easier for me being I had some C language knowledge.
 

breaktru

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Do we have any data in regards to how the charger input on the DNA board functions? I have a handful of CC/CV charger boards I got off ebay and they seem to work rather well, I noticed that while plugged in and the fire button is pressed it resets the charger back to a blue standby light as opposed to the red charging light. Does this mean that while the fire button is pressed it disconnects the charging input from the battery? Guess it could be a protection feature where the charger doesn't read the battery's under load voltage and keep charging a full battery.

Evolv really should consider adding some sort of functional block diagram to their datasheet, would eliminate most questions like this :)

Those chargers they're selling now are nice and small, though I hate micro-usb! Been struggling with a worn out micro usb port on my evo 4g - thing is so fiddly and falls out constantly.

Yeah it would be nice to have a datasheet on the IC used in the charger board. Don't have one, sorry.
Can't tell you for sure whats happening w/ your charger and vaping. Maybe some sort of protection ?? Personally I wouldn't do it.
Yes micro usb is a delicate socket having destroyed a few in the past. My first mod charger was micro and after reading several customer comments on how easy they broke off the pcb board, I put a dab of epoxy on the outer edges for support.
 
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