but how to get an evolv chip in there? 

Damn! What a coinencedence! I was just thinking of asking others how many times have you seen a mass produced mod and wonder if you can fit it with a DNA board? I seem to think this more times than I would want to admit to.![]()
The problem I have with locking resistance or just using a straight TCR value is that I'm OCD about temperature control being as accurate as possible. It's already a leap of faith just using published curves. Adjusting a curve, or just using a "tinkered" value, take the accuracy to a whole new level of inaccuracy in my mind, such as it is. TC devices can be effected by .001 changes in resistance, why change, effectively, resistance willingly?
Here's the thing for me, I don't trust TC wire ever.
The TCR curves are also only as good as the wire being used so it's just a shot in the dark for us all unless we have a good quality temp probe and meter. (Mike?).
Here's what I've been doing lately:
When I get a new spool of wire I start my test by selecting the wire type profile, set my mod to 380°f and dial in more power than I need, atty type doesn't matter. The vapor should be spitty and make the atty very hot very quickly at 380°f because it should be too low of a temp to properly vaporize the juice into a fine mist. Next I move the temp up in 10°f increments which should make the atty cooler as the vapor mist becomes finer and aids in cooling. If I have to increase the temp above 450°f to attain maximum cooling I raise the TCR value in escribe. Just so happens that when the vapor cooling effect is at maximum so is the flavor. This magic spot (temp-wise) for atty cooling and flavor always seems to be just above the spitty zone. It's working great for me and I feel safer knowing that I'm vaping at the lowest temp possible to produce a spitty-free vape and the great flavor is a bonus. The 450°f reference above is just a random temp I chose as a pacification reference and may or may not reflect actual coil temp. The same thing can be said about trusting a wire's tcr value and your mod's temp display imo.
What?
Temperature equipment can be had pretty cheap. I love IR temperature probes myself. Some good ones can be had for under 15 bucks. Although they only work with dry coils. I tried with vapor and the silly lens collects vapor and then they can't see anything passed the lens.
Well I don't know what the wire type you are talking about. But wire types like SS is made from different alloys. That is like a crap shoot. I bet the curves vary from batch to batch and from manufacture to manufacture. It's made from a number of different metals and one tiny variation changes the whole resistance curve. Not super off, but enough to throw the temperature calibration off.
Something like Ni200 is supposed to be 100% nickel. Yeah well I seriously doubt any metal is actually 100% of anything. But it is probably damn near 100% and close enough that a fixed temperature curve should work well enough for virtually any batch and manufacture.
Now 380°F is pretty damn low. Yes some (maybe most) juices will produce some vapor at this temperature. But it is so small that I can't imagine anybody more than 1% of vapers would ever find that vape acceptable. I would guess and say at 95% of TC vapers are vaping at 420°F or higher.
Sure some like a hot vape and some like a cool vape. But for those that are interested in flavor, some flavors come out more at higher temperatures. And while others come out more at lower temperatures. So not only do you have to balance between a hot or cold vape, but also balance out the temperature to bring out the flavors you want.
You also mentioned wattage and temperature setting. I don't know if you know, but if the wattage is set too low, it is never going to hit that temperature that you set. The opposite is also true. Say you have a 250C with a four cell battery which could be set at 400 watts (International version). But have the temperature set at 200°F, guess what? If the coil ever actually receives 400 watts briefly is questionable. But even if it comes close it will be so fast and quickly throttled down in wattage to hold it at 200°F. But it is always a good idea to not have either one set way too high.
Are you really vaping at 380°F? Assuming that is even close to accurate. If so that is super cautious. All of the studies that I have seen which claim some really bad stuff coming out of vapor, always crank the heat way up much higher than any vaper I know of and then they find chemicals that are known to be bad to be inhaled. It's a no brainier to me, of course if you burn the crap out of everything you are going to get bad stuff out of it. But who vapes that way?Yeah, all that sounds about right and people that like a hot vape are gonna die sooner.![]()
Are you really vaping at 380°F?
Can you use NiFe52 with TC?No. If you read my post you'll see that I use that as a starting temp when evaluated the tcr of a new roll of wire. To answer one of your previous questions; I use SS430, Ti and NiFe52 alloy wire. The only wire I haven't tried is platnum.
ETA: Oh, and I use SS316L in all my mech squonkers.
I have also tried tungsten, still keep the curve on my devices, but TI remains my wire of choice.No. If you read my post you'll see that I use that as a starting temp when evaluated the tcr of a new roll of wire. To answer one of your previous questions; I use SS430, Ti and NiFe52 alloy wire. The only wire I haven't tried is platnum.
ETA: Oh, and I use SS316L in all my mech squonkers.