SXmini M Class (TEMP CONTROL)

[Croak]

Not a bad theory, and probably what we'll see in the next generation or two as Yihi, Evolv, and others refine these things.

But it's still all about resistance deltas, so that high speed method will fail as well if the baseline resistance doesn't match the real resting resistance, and when we're talking a thousandth of an ohm being a significant variance, it's (IMHO) best to work with as high a resistance build as you can, so the delta between stored and actual has less impact.

 

[TheotherSteveS]

Agreed! Again, Ti is good here because it allows to build with much larger resistance even using relatively thick wire! A few wraps of 26g get you into the 0.3-0.4 ohm range where the evolv guys say we should be (without telling us how lol!)

Not being a Ti evangelist, just saying!

 

[msmith4512]

I've been having good success running NI200 builds on several of my RDAs and RTAs with my Vaporshark DNA40. 32g 5 wrap 2.5mm spaced single coils on my Lemos and Kayfuns, and 32g 9 wrap 2.5mm spaced dual coils on my drippers. Both builds come in around .18 ohms and work great with temp control set at 450 degrees.

Looking forward to working with the Yihi chip as I've loved my S-class. A little bummed that the M-class is even heavier. My VS DNA40 is only 150 grams. At 260 grams the SX mini M is like carrying two Vaporshark DNA40s or Hana V4m DNA40s or two 130 gram Iphones. With Spring here, I'm out and about more. Will only use my SX Mini at home.

 

[TheotherSteveS]

It is certainly not a light device to be sure!

 

[MidwestGuy]

I'm still trying to brainstorm methods that this device may work "differently" ... you mention that it's not a question of algorithms and processing power, but how about this theory:

Other TC devices measure the average temperature of the entire coil based on the resistance. I.e.: "If our current temperature is at or very close to our TC setting, begin lowering wattage delivery"

Perhaps the SX Mini is focusing more on the current delta, rather than adjusting/throttling back based on the current calculated temperature? Say the processor is powerful enough to do this at an extremely high rate of speed, maybe faster than other TC chips. If the delta between .01 and .02 seconds at any point during firing is above a certain threshold, lower the watts/sec output slightly to control the delta:

The algorithm would be something like: If at any point during the fire, the resistance delta for a .05 (or .xxx) second interval was 200F (or above a programmed delta threshold), lower watts per second output for a fraction of a second to control because our delta of 200F is too high.

If it does this at a super high rate of speed, it might(?) be pretty effective compared to just reading current temperature and saying ooh, too hot, lower wattage.

Just a thought I had immediately after waking up while staring at the ceiling and thinking about getting up to get in the shower.

Adding one more thought to this idea ... perhaps this is also why they're using Joules.

If my setting is at 30 Joules, meaning the device will deliver 30 watts in a 1 second timeframe (or 15 watts in a half second time frame, or 7.5 watts in a 1/4 second time frame, so on so forth)... perhaps if the delta is relatively high for a given interval during the fire, it will deliver a lower power for the first portion of the next .xxx second time block: A second is probably a HUGE amount of time for an example, but for simplicity, say: 1/3 of the second will get 5 watts, 1/3 of the second will get 10 watts, and 1/3 of the second will get 15 watts (n=3 in this example, n is most definitely WAAY higher in reality).

If at any point, temperature setting is actually reached, kick in some other functions to actually limit power/throttle back.

Again, just some more geeking out on theories as to how this device works differently.

 

[shortlex]

I subscribed to this thread because I got this SXmini M Class from a couple of days and didn't understand how to set Joules using Temp control.
Now I'm using 30J because is the "typical"?? setting but really I don't know why.
Hope you'll explain easily.

 

[tchavei]

Think of it like Mph... Just because you're driving at 80mph doesn't mean you will travel 80 miles or for one hour. It's your current speed (work).

One could argue Watts is nothing because it's an expression of power but without a time frame it also means nothing.

Keep it simple

Regards
Tony

Sent from my keyboard through my phone or something like that.

 

[opher]

Just got my M Class!! This thing is awesome and am loving it. I have a question for you guys...when temp protection is hit does the board notify you that the temp has been hit? I am set to 420° and have yet to see a notification that temperate protection has been reached or hit. I'm assuming it doesn't and simply down regulates the power without a notification cause I've been chain vaping this thing like crazy and have seen nothing in screen. Just thought I'd check in with you guys, thanks!

 

[CaCHooKa Man]

My device just arrived and this thing has some serious heft. It's feels like it's heavier than my Sigelei 50W and 150W combined. The packaging is super nice with the outer sleeve and little gift bag. Can't wait until my Ni200 wire comes in later this week so I can test that out.

 

[DDramaSV]

Just got my M Class!! This thing is awesome and am loving it. I have a question for you guys...when temp protection is hit does the board notify you that the temp has been hit? I am set to 420° and have yet to see a notification that temperate protection has been reached or hit. I'm assuming it doesn't and simply down regulates the power without a notification cause I've been chain vaping this thing like crazy and have seen nothing in screen. Just thought I'd check in with you guys, thanks!

It will give you a Dry Coil No Liquid warning if you totally run down every drop of juice but the only time I have actually seen that happen is when I fire a totally dry piece of cotton. Others have purposely run out every drop of juice to test the warning. Otherwise it just regulates the temp you set as the juice evaporates! The best part is that it really keeps vaping perfectly and the flavor and vapor gradually decrease.

 

[DDramaSV]

I tend to look at it that instead of alarming the user that the coil is set to exceed the temperature setting like the DNA 40 and then quickly throttling back the power it gradually does so without making it nearly as noticeable! It's a very different approach to Evolv's and it's not nearly as startling. I know I've had plenty of those moments with my DNA 40 where I'm loving the vape and all of a sudden the rug gets pulled out from under me

 

[a tez]

I received my SX Mini about 2 hours ago as well as the new Subtank Plus and have been vaping on it non stop. I have a 3.5mm .11ohm coil in it set at 400F and 35J and this thing is cloud city. The flavor is excellent. I have not hit temp protection once. This device is a lot nicer in person than pictures on the internet make it out to be and it feels extremely good in the hand.

Loving it so far.

 

[HolmanGT]

I received my SX Mini about 2 hours ago as well as the new Subtank Plus and have been vaping on it non stop. I have a 3.5mm .11ohm coil in it set at 400F and 35J and this thing is cloud city. The flavor is excellent. I have not hit temp protection once. This device is a lot nicer in person than pictures on the internet make it out to be and it feels extremely good in the hand.

Loving it so far.

a tez,

Gee you didn't even give the SXmini time to steep.

Glad to hear the good report. To date I have yet to hear a bad report looks like HiYi hit it out of the ball park.

 

[DDramaSV]

I received my SX Mini about 2 hours ago as well as the new Subtank Plus and have been vaping on it non stop. I have a 3.5mm .11ohm coil in it set at 400F and 35J and this thing is cloud city. The flavor is excellent. I have not hit temp protection once. This device is a lot nicer in person than pictures on the internet make it out to be and it feels extremely good in the hand.

Loving it so far.

400 F is my sweet spot as well! I'm usually running between 32-40 Joules on my derringer at .11 with 28 gauge NI200! Fantastic Vape with Orphan Tears!!

 

[dam718]

Just saw the order I placed yesterday morning is now out for delivery. Should be here in the next couple of hours

 

[a tez]

a tez,

Gee you didn't even give the SXmini time to steep.

Glad to hear the good report. To date I have yet to hear a bad report looks like HiYi hit it out of the ball park.

Lol yea I have no patience.

400 F is my sweet spot as well! I'm usually running between 32-40 Joules on my derringer at .11 with 28 gauge NI200! Fantastic Vape with Orphan Tears!!

Yea I noticed anything above 400F is a little too hot for my liking, at least with the juice I am currently using (Placid from Adirondack Vapor). 400F on my DNA 40 is a much cooler vape. 400F on the SX Mini is perfect for me because I like my vape on the warmer side.

 

[ThunderDan]

400 F is my sweet spot as well! I'm usually running between 32-40 Joules on my derringer at .11 with 28 gauge NI200! Fantastic Vape with Orphan Tears!!

What's your build look like? I'm using a derringer with 28g ni200 as well around the same ohm but I don't think its the best right now, seems to be gunking up in different spots, maybe hot spots.

 

[a tez]

Hmm just noticed one flaw with my device. My device is Back/Silver and the black part right under the 510 is sticking out slightly on one side and is completely flush on the other.

Flush

Sticking out.

Not a big deal but I can't push it in to place.

 

[Vlad1]

You would probably need to loosen the screws that hold the cover in place to adjust it but that could possibly void warranty. And in fact after you posted this I looked at mine and it is indeed the same. Right side sticking out a bit holding upright with lcd facing me and left side flush to slightly sunken in. But it's so minute I hadn't even noticed in the last two days.

 

[a tez]

You would probably need to loosen the screws that hold the cover in place to adjust it but that could possibly void warranty. And in fact after you posted this I looked at mine and it is indeed the same. Right side sticking out a bit holding upright with lcd facing me and left side flush to slightly sunken in. But it's so minute I hadn't even noticed in the last two days.

Yea I only noticed it when my finger moved over it. I didn't see it at all. Like I said it's no big deal and it's definitely not worth voiding the warranty over.