Evolve DNA 12 preliminary Testing w/ MCU and OLED Display

[jmarkus]

I agree. Brandon's support in his products and customer follow-up is totally top notch.

He is exchanging my pilot boards for the updated version. Ya'll prob feel the earth rumble from my happy dance when I hit that 12 Watts mark.

he was super nice about exchanging my boards as well!!

 

[breaktru]

I agree. Brandon's support in his products and customer follow-up is totally top notch.

He is exchanging my pilot boards for the updated version. Ya'll prob feel the earth rumble from my happy dance when I hit that 12 Watts mark.

I'm interested to know if the new version will be stable. Let us know mamu when you get the new ones and test fire it.

 

[WillyB]

It's da gremlins Breaktru - I tell ya it's the gremlins... they muck up everything.

I'm really hoping someone will come along and actually get 12 Watts and tell us *how* they got 12 Watts. It could be sumfin that we hadn't thought of yet. Just not sure. Or it may be that the board is overspec'd. Just not sure of that either.

Have you tried multiple loads (different ohms)?

This guy claims to have hit different watts depending on the load.

In his examples it looks like his '5.5V' is capping the watts, while '4.2V' isn't (not as much at least). This is not an unusual phenomenon. Didn't the Kick have some sort of high volts stipulation?

http://www.e-cigarette-forum.com/forum/new-members-forum/302466-dna-slim-mod-jj.html

 

[mamu]

I'm interested to know if the new version will be stable. Let us know mamu when you get the new ones and test fire it.

I will breaktru. I'm looking forward to testing the new board and will update my thread when I get the testing done.

Have you tried multiple loads (different ohms)?

This guy claims to have hit different watts depending on the load.

In his examples it looks like his '5.5V' is capping the watts, while '4.2V' isn't (not as much at least). This is not an unusual phenomenon. Didn't the Kick have some sort of high volts stipulation?

http://www.e-cigarette-forum.com/forum/new-members-forum/302466-dna-slim-mod-jj.html

I did test with several different ohm cartos/atty with the initial board - 1.5 ohm DCC, 2.5 ohm DCC, 3 ohm SCC, and standard 510 atty at 2.4 ohm. I found that both the voltage and amps changed to keep the Watts at that setting for a particular carto/atty and that the setting varied by +/- 0.1 Watts, sometimes +/- 0.2 Watts. Before I shortened the wiring run, the Watts fluctuated by as much as 0.5.

This test was done with a watts meter and with the board set at its max capable (I also used my carto gadget to directly measure Amps and Volts and essentially got the same numbers as the watts meter):

1.5 ohm DCC: 11.2W, 2.65A, 4.24V

2.5 ohm DCC: 11.1W, 2.09A, 5.34V

Standard 3 ohm SCC: 11.1W, 1.92A, 5.76V

510 standard atty (2.4 ohm): 11.2W, 2.14A, 5.22V

For the same Watts setting and with using different ohm cartos/attys - both the volts and the amps vary to maintain Watts. Look at the volts with the 1.5 ohm DCC (4.24v) compared to the volts with the 3 ohm SCC (5.76v). So I don't think it's very reliable to just look at what the volts are doing with vw regulation, especially when comparing volts delivered when using a standard ohm single coil carto with volts delivered using a low resistance multiple coil carto.

Another thing - I've found that multiple coil cartos are going to show false high Watts if you calculate it vs the Watts measured by the watts meter. With multiple coils you can use the resistance of the total circuit, or calculate each coil and add them - doesn't matter which method as you get the same results.

When I calculate Amps and Watts with the 3 ohm SCC, I get the same values as the watts meter, but when I calculate Amps and Watts with the 1.5 ohm DCC and with the volts being 4.24v, I get 2.83A and 12 Watts. But the watts meter measured 2.65A and 11.2 Watts. So doing calculations vs actual measurements is going to give false high values when working with multiple coil cartos.

 

[Emris]

Is there any information as to what could cause the pulsing atty when fired?

 

[breaktru]

Is there any information as to what could cause the pulsing atty when fired?

Are you experiencing a pulsing Atty?
Mine was a one time thing and have never had that happen again. My thought is that perhaps the module was cutting on and off due to overload but that is just speculation.

The fluctuations that I see in values of amperage and wattage may be because my readings are calculated with a micro controller and is being updated every 1000ms (1 second).

I have a piggybacked boost module (PTN04050c) connected to a micro controller with a Nokia cell phone display and I am also seeing fluctuation in values.
I will probably slow down the loop to calculate every 3000ms.

 

[mamu]

Is there any information as to what could cause the pulsing atty when fired?

Like Breaktru said, it's an overload. The board is shutting off/recovering very rapidly and repeatedly which causes the atty to fire/not fire - like it's pulsing on/off on/off. If you look at the red LED on the dna board you'll see it lighting/not lighting in sync with the board shutting off then recovering. It happens very rapidly on/off on/off when you're pressing the atty switch and will until the situation is corrected.

It happens when the wattage is set too high for that particular carto/atty, or when the carto/atty's resistance increases, or when the batt voltage is getting low.

Solution is to set the Watts lower, change the carto/atty, or recharge the batt.

 

[Emris]

That is what I was thinking but I wasn't 100% sure. Thanks for the info I feel better about it know. Seems to be a solid little unit. I'm happy with it so far. I was using a 3 ohm carto on it for a while and had no issues with it, but I wanted to play around with lower ohm stuff and that is when it started. Looks like I need to find some 3 ohm atty's.
Thanks again Breaktru and Mamu.

 

[breaktru]

I'm getting 20.38 Watts and over 3 amps with a new micro-controller mod which is powered by a single PTN04050c and a 20C Li-Po. I am well over the limits of the module being the spec's say max of 12watts and 2.4amps. I'm running a 2 ohm wire wound load at 6.38 volts
All I need to do is house this sucker in something.
If I continue like this I'll probably blow the module. The PTC fuse I have on the Li-Po gets extremly hot. After several bursts I tripped the fuse which is rated to trip at 5.1 amps and hold at 3 amps. The PTC is probably tripping due to thermal shut down. Well that is if kept firing it up or using long bursts at max settings.

update:

Wow, just reached 22.78 watts and 3.38 amps

 

[Emris]

I getting 20.38 Watts and over 3 amps with a new micro-controller mod which is powered by a single PTN04050c and a 20C Li-Po. I am well over the limits of the module being the spec's say max of 12watts and 2.4amps. I'm running a 2 ohm wire wound load at 6.38 volts
All I need to do is house this sucker in something.
If I continue like this I'll probably blow the module. The PTC fuse I have on the Li-Po gets extremly hot. After several bursts I tripped the fuse which is rated to trip at 5.1 amps and hold at 3 amps. The PTC is probably tripping due to thermal shut down. Well that is if kept firing it up or using long bursts at max settings.

update:

Wow, just reached 22.78 watts and 3.38 amps

That is insane. I dont know if it is me, but it seems that setting the DNA to lets say 3.6V doesnt vape the same as setting my provari to the same voltage. The DNA is producing a much more satisfying vape at the same voltage.

 

[breaktru]

I'm getting 20.38 Watts and over 3 amps with a new micro-controller mod which is powered by a single PTN04050c and a 20C Li-Po. I am well over the limits of the module being the spec's say max of 12watts and 2.4amps. I'm running a 2 ohm wire wound load at 6.38 volts
All I need to do is house this sucker in something.
If I continue like this I'll probably blow the module. The PTC fuse I have on the Li-Po gets extremly hot. After several bursts I tripped the fuse which is rated to trip at 5.1 amps and hold at 3 amps. The PTC is probably tripping due to thermal shut down. Well that is if kept firing it up or using long bursts at max settings.

update:

Wow, just reached 22.78 watts and 3.38 amps

This Mod is far superior than my DNA mod

 

[Emris]

This Mod is far superior than my DNA mod

That reminds me of an old Dell MP3 player that I used to have. Look forward to the progress on this.

 

[Mrgreen819]

very nice board! Thanks for taking the time to post this Breaktru and everyone else's input as well. I was just looking at the spec sheet and no where it state this is a stepped regulator? Just curious.

 

[breaktru]

very nice board! Thanks for taking the time to post this Breaktru and everyone else's input as well. I was just looking at the spec sheet and no where it state this is a stepped regulator? Just curious.

I assume you are talking about the DNA datasheet. It doesn't specifically mention step-up or boost but if you look at page two and look at the input voltage vs the output voltage you can determine that it is.

 

[EKDP]

This Mod is far superior than my DNA mod

Who is making this one? Thanks.

 

[breaktru]

Who is making this one? Thanks.

M.......E......
Look at post # 111

 

[EKDP]

Thanks, I read it before but I'm dense. I'm just a dumb cnc machinist. Nice work by the way. Looks like with a directional pad and buttons you could play games on it between vapes.

 

[breaktru]

Thanks, I read it before but I'm dense. I'm just a dumb cnc machinist. Nice work by the way. Looks like with a directional pad and buttons you could play games on it between vapes.

It can be done but not going that route.
I'll create a new Thread once I finish squeezing the top cover on. Hope I don't break or short things out doing it.
If you want to see it in the making, look here: Boost MCU Nokia Mod

 

[EKDP]

It can be done but not going that route.
I'll create a new Thread once I finish squeezing the top cover on. Hope I don't break or short things out doing it.
If you want to see it in the making, look here: Boost MCU Nokia Mod

I'm sure you could be done. LOL I was just kidding. Teaches me for opening my mouth. Thanks I'll have a look.

 

[EKDP]

WOW! Just took a look at it. I'm afraid I see an intervention in your near future. Next you will be freebasing nicotine. LOL