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Thank you lamonjullo for your answer. I haven't really checked the battery readout before it passed away However, I have noticed weird ohm readings and unstable power delivery etc. And thanks for the warning. Luckily, the battery is already out and (unluckily) it won't be back soon

Since the above I had a closer look at and it is the fuse which leads to two questions: Why? What next? Because, it seems to me that something is wrong with the USB connector or with something related to it for: 1. Without USB plugged the device is dead. So far so good, the fuse is blown, no power. 2. USB on I have some function, connectivity but limited. E.g. No ohms reading (Check Atomizer message on board big question mark on Escribe) and obviously no firing.So, apparently USB can power up some circuits not protected by the fuse. Which is either a bug or a feature, I don't know. 3. USB plugged and some light upward force applied on the plug (that I accidentally did, tilting the mod to look inside while troubleshooting) and the full device is on direct USB power and dead fuse is fully bypassed means Ohm reading is workingThe mod starts to fire until I got a too high ohm message (understandably, 5V/0.5A doesn't go long way)And this bothers me a lot. Apparently some current from USB can bypass the fuse and flow everywhere it wants. And if it happens when fuse is blown than it can happen when fuse is not (yet) blown. And I fear, that it could easily blow the fuse again. And again. Or fries something else on the board? Which leaves question #2 What next? P.S.: This is the way I have held the mod when USB bypassed everything (w/battery on) Apparently at some point something makes contact with some other thing on the board that shouldn't happen. It would explain a lot of things, wouldn't it? BTW, she died while tethered and vaped on, USB plug sitting on my index finger...

After a beautiful week she has stopped working but still alive Symptoms: Without USB plugged in goes dark and dead as if there was no battery connected. With USB plugged she lights up as per normal but doesn't fire. Mostly says check atomizer sometimes says too high ohm. Device Monitor shows battery voltage perfect, if all the connector is attached and funny numbers if only the balance charger is plugged. Atomizer Analizer starts promising than drops connection too. Should it display the same Check Atomizer message unplugged I would even buy that it is the connector/wiring (the very atty is at work ATM on an IPV4 so I figured it was OK) but it seems that there is something else trigger this message. Besides, as far as my MM can tell both the connector and the output wires are OK and I can also detect the standby mV-s on the connector and the on the wire. MM shows the battery OK too both on connector and on solder (12+V) And the smell. The unmistakeable smell when an electrical device is about to die and getting hot too when USB is on. Can it be the fuse? Or it would make the whole thing dark even with USB on? Thank you in advance for any advice P.S: Besides: Is there any way to simply export data listed above? If yes, where? If not, can I make it a feature request?

Thank you John again You guys are awesome I will spread the good news about the lower limit P.S. I don't want to do any silly, neither enter the coil resistance. Just used as an example convincing mainly myself that the hardware must be potent enough

A new question, hope you don't mind: It seems that eScribe doesn't support TCR lower than 0.002 using the special wire feature. However, I can add segment(s)/CSV with a resistance change representing materials with lower TCR (e.g. S/S316) The question is if it works for real or not. In terms of 316 S/S it has ~8 times higher resistance than Ni200 with ~1/4 of the TCR resulting ~2 times more ohm change to detect for same length/gauge coils. (Eg. 0.09for Ni and 0.77 for S/S.) So I take the hardware must be able to handle a well sized S/S coil (resistance at least 4 times of the default lower limit) which leaves the software. I personally would be happy to know that I can load and use segments/CSV representing lower than 0.002* and ready to make sure that the initial coil resistance is high enough for safely detectable resistance change. Thought, you may want to consider lowering the TCR limit to e.g. 0.001 with a warning popup (the temp control can be inaccurate below a TCR of 0.002 and/or requires higher initial resistance) to satisfy other users as well *: in my case one would be my 26ga.FeCrAl/32ga.Ni200 Hybrid Clapton with a TCR of ~0.0013-0.0011 and TFR of ~1.1-1.31 in the 200-600F range

Thank you James, it was very informative.

Thank you John and waiting for the info on data limit.

Repost from here: I am just playing with the eScribe and have a few question regarding to custom coil settings I couldn't figure out without an actual DNA200 on hand: Is it a must to normalise the TFR to 70°F or any other temp does the job?Is it just the eScribe display which rounds TFR to 0.X or the sensitivity/precision of the DNA200 is 0.X?Is there any limit of the input data pairs the board can handle?Details: I have tried and it is possible to upload csv with 68°F normalised TFR (which is 20°C metric). As all of my data is metric it would be awesome if I could simply convert the temp. But to do that the board should be able to handle csv where the TFR=1 belongs to 68°FThe graphic display of the custom settings rounds both temp and TFR to 0.X . Which means that e.g. for 316S/S the same TFR is shown from 160-350°F. I take it is just for demonstration only but again, w/o a board and 316 S/S on hand I can't tell how precise it is in the background.It is also unknown to me how the algorithm behind uses the input data. The display shows simply linear approximation between steps. If this is the case I might want to load a tons of data (i.e. for every 5° or even more) depending on the material. However, it would be lovely to know if there is any particular data size the board is capable to handle. Again, eScribe has no problem with 40+ data pairs but the board can be an other thing. P.S.: If 68°F normalised TFR works and the board can handle 0.00x precision TFR wise and able to handle 40+ lines of data it is just minutes to convert all my data to F and make a new tab with tons of simply copyable csv materials. Just sayin'