KeroZen
Chronic vapaholic
On a completely unrelated note, I was trying to find some info on the OMNI chipset (as used in the Vaporesso mods) and I stumbled on this discussion which gave me a strong feeling of deja-vu:
https://www.e-cigarette-forum.com/forum/threads/vaporesso-nebula-wattage-change.800815/
Especially the end. We had exactly the same discussion here with @funkyjunky when I said you guys should really be using 30A CDR cells with your 70W output target as it's way too much for the 18A cells you use (ex: HG2, 30Q, VTC6...) I also think it's stressful enough for the cell, even if the firmware tries to prevent that from happening, but FJ thinks it's fast to detect the problematic condition... Well, I still think it's best to prevent the condition in the first place by using the right cells.
In the e-cig world nobody recommends using sub 20A cells for over 70W output. Even 25A would be too close to the limit. Also many of you guys reported overheating conditions, so it's not good for the cells (even if it's only the chipset converter / FETs that are heating too much, the heat gets transferred to the entire device)
Last but not least, everytime I read resistance range recommendations for SS TC, they say it's best to have the coils between 0.5 and 1.0ohm. With lower resistances you get a really bad resolution on the ADC and errors are amplified which results in a greater temperature variation. I had hopes when I got the evic Primo mini but it's the same chipset and the ADC is poor really. Even with ArticFox and PID regulation the readings are wild and it's pretty hard to get under 10°C temperature precision.
What makes the success of DNA, YiHi and HohmTech chipsets is not just the software, they also use better hardware. I hope FJ will consider making some deluxe Tubos using DNA boards. That would get rid of the (IMHO) somewhat awkward form factor and would feel much more elaborated and integrated.
https://www.evolvapor.com/products/dna75
https://www.evolvapor.com/products/dna250
Of course the price would have to be higher, but that's expected when using high end components. And when buying in bulk, I'm not sure that the price difference would be that large, "just" need 18650 battery holders, an internal frame of some kind to add rigidity, a front panel and/or button caps and voila... All the rest can be borrowed from the existing Tubo.
https://www.e-cigarette-forum.com/forum/threads/vaporesso-nebula-wattage-change.800815/
Especially the end. We had exactly the same discussion here with @funkyjunky when I said you guys should really be using 30A CDR cells with your 70W output target as it's way too much for the 18A cells you use (ex: HG2, 30Q, VTC6...) I also think it's stressful enough for the cell, even if the firmware tries to prevent that from happening, but FJ thinks it's fast to detect the problematic condition... Well, I still think it's best to prevent the condition in the first place by using the right cells.
In the e-cig world nobody recommends using sub 20A cells for over 70W output. Even 25A would be too close to the limit. Also many of you guys reported overheating conditions, so it's not good for the cells (even if it's only the chipset converter / FETs that are heating too much, the heat gets transferred to the entire device)
Last but not least, everytime I read resistance range recommendations for SS TC, they say it's best to have the coils between 0.5 and 1.0ohm. With lower resistances you get a really bad resolution on the ADC and errors are amplified which results in a greater temperature variation. I had hopes when I got the evic Primo mini but it's the same chipset and the ADC is poor really. Even with ArticFox and PID regulation the readings are wild and it's pretty hard to get under 10°C temperature precision.
What makes the success of DNA, YiHi and HohmTech chipsets is not just the software, they also use better hardware. I hope FJ will consider making some deluxe Tubos using DNA boards. That would get rid of the (IMHO) somewhat awkward form factor and would feel much more elaborated and integrated.
https://www.evolvapor.com/products/dna75
https://www.evolvapor.com/products/dna250
Of course the price would have to be higher, but that's expected when using high end components. And when buying in bulk, I'm not sure that the price difference would be that large, "just" need 18650 battery holders, an internal frame of some kind to add rigidity, a front panel and/or button caps and voila... All the rest can be borrowed from the existing Tubo.
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