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Bern18462

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Reply with quote  #16 
28g 14 wrap .06 ohmsIMG_20150719_124708440.jpg 
John

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Reply with quote  #17 
Has your DNA 200 mod recognized other coils properly? That certainly looks properly built. 
Bern18462

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Reply with quote  #18 
No never recognize it I have to change it manually and still I put it to 320° and it barley smokes
Bern18462

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Reply with quote  #19 
On the  atomizer analyzer it says kanthal ... But I have ni200 in there 
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Reply with quote  #20 
the  atomizer analyzer has both kanthal and nickel, you can tell it has picked up nickel by the temp showing as the last of the 3 fields on the dna screen.

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Latest versions of EScribe: DNA 200/250DNA 75
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Bern18462

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Reply with quote  #21 
It don't even ask if I change atomizers I changed 3 different ones so its probably a screw up on my side idk ... And I can go to 600° in temp mode and barly any vapor 
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Reply with quote  #22 
It wont ask if the resistances are close to each other, 25% is the default value it can be changed in the Mod tab - Thermal - Ohm Lock Range
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Latest versions of EScribe: DNA 200/250DNA 75
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Bern18462

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Reply with quote  #23 
I put it to 5% and went from a .06 build to a .64 amddidn ask .. Am I just messing up on something .... Does the board NEED to be grounded with the 3 1.7 mm bolts? 
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Reply with quote  #24 
I think the grounding has to be very good with these and I would think a poor contact with common ground or a dry solder joint would give you problems like you describe.
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Latest versions of EScribe: DNA 200/250DNA 75
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Bern18462

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Reply with quote  #25 
So me not having it bolded in may cause these problems? I'll double check solders and make a different box 
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Reply with quote  #26 
Grounding by the chassis does work, just need to do it well and remove any anodising on the ground point.

pg 16 of the data sheet
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The DNA 200 has three mounting holes on the PCB. These holes are designed for #0 screws. There is an extended mounting pad of .125” diameter around each. These holes are electrically connected to each other and to ground. With careful design, the mounting pads can be used to ground the chassis to the DNA 200, and pass the output current through chassis to the connector. However, if using this method, ensure that the PCB remains in good contact with the board at all times. Split lock washers and a RoHS chromate conversion coating on the chassis are recommended.

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Latest versions of EScribe: DNA 200/250DNA 75
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Bern18462

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Reply with quote  #27 
Ya I read that when I was building the box but didn realize I didn machine the holes for bolting it in so maybe I'll just design a new box with mounts for board.... How do you have yours held in? And did u make a box or buy it
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Reply with quote  #28 
I just used a Hammond 1590A not using common ground, and used 1 mm thick copper ground ring under the 510 nut with 14 AWG to the board negative output.
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• I am not employed by nor do I represent Evolv Inc.  All opinions are my own, they are just opinion not fact and can be wrong •

Latest versions of EScribe: DNA 200/250DNA 75
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Bern18462

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Reply with quote  #29 
That's how mine is except I built my box 
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Reply with quote  #30 
Tricky I don't know what else to suggest apart form saying that it is easy to get a dry/poor joint on the positive of some 510 connections with a hole the wire goes into.  Good luck.
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• I am not employed by nor do I represent Evolv Inc.  All opinions are my own, they are just opinion not fact and can be wrong •

Latest versions of EScribe: DNA 200/250DNA 75
Common problems
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