iStick

[Deleted]

Day two feedback :-

You will definitely need a small flat head screw driver to pull out centre pin for none firing atties .

The original russian 91 has a proper adjustable pin so works well, the three clones from reputable suppliers here require fiddling with Istick centre pin.

Power settings require ' getting used to'

Battery life is good .

[robby]

Oct 30, 2014 16:15:06 GMT sleedale said:

Think it's just one of those days......even the dog didn't coooerate

I really, really don't like silica wicks anymore so I'm having a cup of tea, then I'm going to recoil the new heads with new Kanthal and cotton wool and try again.

Out of interest, would using the supplied ego adaptor, which is temperamental to say the least, have any effect of the volts/watts fluctuation? Things seem worse when I'm using that, although it was tying to fry my PT2 earlier.

It was so very lovely yesterday, and the only thing I've done is charged it up. and it's so very pretty too

Maybe my mvp has hexed it?

The adapter shouldn`t make any difference. I would set the thing to minimum volts, put your atty on, and adjust the voltage upwards until you have a satisfying vape (hopefully). Dont switch from VV to VW, there`s no need. Alternatively you can start off on minimum watts and adjust it upwards Worth a try.

The way the volts is displayed is different to other VV/VW devices. If you work out about 70% of what you are used to seeing on other VV/VW device displays, and then use that value for voltage on the Istick, you shouldn`t be far off. 

Hopefully they will use the normal method for V2.

[Deleted]

Oct 30, 2014 16:34:43 GMT robby said:

Oct 30, 2014 15:13:52 GMT @scooby said:

Just checked mine with a volt meter and it's all over the place, don't get any burnt hits though.

Same meter on VS rDNA and Semovar are rock steady as you would expect.

You cant read these on a multimeter because they use Pulse Width Modulation .......................................... dont ask 

I won't   Electronics isn't my strong point so thanks for that. oh it wasn't a multimeter it was an tankometer with an atty attached, but I guess that's just the same

On a general note I think that even taking into account it's limitations at this price point it's a cracking buy.

[Deleted]

robby forgot to ask you, is the PWM (I'm not asking what that is ) the reason for the limited wattage range I mentioned in a previous post

[robby]

Yes, same thing really with the tankometer, sometimes they will pick it up okay, but you cant trust the reading when they do with PWM. It is a crackin buy for sure

[robby]

Oct 30, 2014 17:21:28 GMT @scooby said:

robby forgot to ask you, is the PWM (I'm not asking what that is ) the reason for the limited wattage range I mentioned in a previous post

Yes, it`s probably the current limit coming in to protect the device

[robby]

allaboute-cigarettes.proboards.com/thread/40451/pulse-width-modulation-simple-explanation?page=1&scrollTo=700909

I`ve attempted an explanation of PWM on that thread if you are interested @scooby

[VapingBad]

There are professional multi meters that have a feature called "true RMS" that can read the voltage, but most don't as robby said. The difference between what it does and what it says is largest at the lower end of the range and it is probably accurate at max volts.

[djs]

Oct 29, 2014 0:23:05 GMT dreamylittledream said:

The mini Nauti really needs a good 15w to pump things out

Hang on doesn't the Vamo go up to 15 anyway?

The Vamo does, but it's the only mod I have that can do 15w.

istick soon, and it's mysterious 'leaf' watts.

[robby]

Oct 30, 2014 17:30:41 GMT djs said:

Oct 29, 2014 0:23:05 GMT dreamylittledream said:

The mini Nauti really needs a good 15w to pump things out

Hang on doesn't the Vamo go up to 15 anyway?

The Vamo does, but it's the only mod I have that can do 15w.

istick soon, and it's mysterious 'leaf' watts.

It`s a bit odd, I have never really heard of MEAN watts, having no idea how they programmed the Istick I dont know how the chip calculates it, is it using MEAN voltage or RMS voltage?. 

MY HEAD HURTS

[spaniel]

Well my second one turned up i now have black 'n' blue  :Dwon't be going for girly pink red though.
Anyway enough of Istick i want more pics of @scooby beautiful springer 

[Greigster]

Oct 30, 2014 16:20:50 GMT @scooby said:

Oct 30, 2014 16:16:17 GMT quincey43 said:

I can't get mine off!!

quincey43 I used a really sharp pair of pointed tweezers and picked at the end where the up/down buttons are

There are two pieces, 1 small square above the fire button and 1 longer strip below the fire button. I thought it was a little clearer.. ??? and certainly shinier, until it gets covered with finger marks
I was able to pick at the corners to remove it and I have blokie fingernails.......shortish but rather well manicured

[VapingBad]

Oct 30, 2014 17:33:39 GMT robby said:

Oct 30, 2014 17:30:41 GMT djs said:

The Vamo does, but it's the only mod I have that can do 15w.

istick soon, and it's mysterious 'leaf' watts.

It`s a bit odd, I have never really heard of MEAN watts, having no idea how they programmed the Istick I dont know how the chip calculates it, is it using MEAN voltage or RMS voltage?. 

MY HEAD HURTS

Mean is just what everyone thinks of average EG take a pulse of 6 V for half the time (duty cycle of 0.5) with the off voltage as zero and the mean is 3 V.  RMS (approx) for a pulse is V_max * sqrt(dc) for that example 6 * 0.7071 = 4.24 V.

RMS can be thought of as the equivalent heating power.

[VapingBad]

This is the diff between mean and RMS for 0-6 V PWM which if IIRC is similar to the iStick, these are just done by the formula not measured so YMMV.
You can see the difference is much bigger for the lower values.

Mean RMS
0.30 1.34
0.60 1.90
0.90 2.32
1.20 2.68
1.50 3.00
1.80 3.29
2.10 3.55
2.40 3.79
2.70 4.02
3.00 4.24
3.30 4.45
3.60 4.65
3.90 4.84
4.20 5.02
4.50 5.20
4.80 5.37
5.10 5.53
5.40 5.69
5.70 5.85
6.00 6.00

(E: FYI each step is a 0.05 increase in the duty cycle, from 0.05 - 1)

[Deleted]

Oct 30, 2014 17:52:56 GMT Greigster said:

Oct 30, 2014 16:20:50 GMT @scooby said:

quincey43 I used a really sharp pair of pointed tweezers and picked at the end where the up/down buttons are

There are two pieces, 1 small square above the fire button and 1 longer strip below the fire button. I thought it was a little clearer.. ??? and certainly shinier, until it gets covered with finger marks
I was able to pick at the corners to remove it and I have blokie fingernails.......shortish but rather well manicured

Just taken the little top piece off and it has transformed the iStick