Veles

Temp control not working

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So i build dual coil with Ni200, 0.3mm(28AWG), 8 wraps around 2.3mm drill bit.
Down below is my set up from eScribe.
I'm getting an insane dry hits at wattage far below then set on eScribe- I've tryed to go down at 40W, still dry hits. If I do 120W coils start to glow red while device is displaying "temperature protected".


123123123.png

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Hard to tell how bad from a photo, it looks like a very hot spot on the closest coil, be even so it looks bad.  Try something simpler like a single spaced coil.  Also check the mod resistance has not been set to something silly in Escribe like > 0.02 ohm.

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Veles said:

So i build dual coil with Ni200, 0.3mm(28AWG), 8 wraps around 2.3mm drill bit.
Down below is my set up from eScribe.
I'm getting an insane dry hits at wattage far below then set on eScribe- I've tryed to go down at 40W, still dry hits. If I do 120W coils start to glow red while device is displaying "temperature protected".


123123123.png



Is that a VT200 box? I think I'm starting to see a pattern maybe.

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open device monitor and hit record -save filename- hit the mod a few times with the boxes checked in the picture
DM.jpg 

And see if the Temp (red) is moving to the set temp or not .... screen shot it and post it here, attach the saved file which should be a .csv file

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I'd say try a single spaced coil first. this will show you that the chip is working as it should, then try duals but make sure they are exactly the same and not shorting by keeping the wraps slightly spaced, the coils really need to be balanced well to each other to function properly

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