Need some help with the dna 40 I've build a 28 gage 16 wrap spaced ni200 around a #0 screw driver came out to .14 so I set my temp to 410 and watts to 25 and keep getting a temp protected read out because the only way it will fire with out the temp protected readout is at 2.5 watts or I have to raise the temp to 600.. am I doing something wrong or is it possible I got one of the faulty boards any help would be greatly appreciated
dna40 help
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You'll be happy to know it is near 100% certain you are doing something wrong! 
I suggest you try a #8-32 screw or a 3 mm/1/8" drill and about 8 wraps of 28g as a start.
A 16 wrap spaced coil must be mega long, to long for the incoming air to cool properly?
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I suggest you try a #8-32 screw or a 3 mm/1/8" drill and about 8 wraps of 28g as a start.
A 16 wrap spaced coil must be mega long, to long for the incoming air to cool properly?
You are just one post short of joining the dna discussions.
Oh boy, so much sounds wrong with that build I don't know where to start. Go here and read through this thread. Skipping to the end an going backwards may save you some time, as the first 3/4 is everyone figuring the Ni builds, it gets more dialed in towards the more recent posts.
A good coil to start out with is 28g 9wraps around a 6-32 machine screw. Keep the coil on the screw as you attach it (which you shouldn't be doing on the mod), then unscrew the screw from the coil. There is much more that goes into getting a properly functioning coil though, so read through that thread.
Edit: 8-32 works just as well, like woofer suggested, and with 8 wraps you will get roughly the same resistance as 9 wraps around a 6-32.
A good coil to start out with is 28g 9wraps around a 6-32 machine screw. Keep the coil on the screw as you attach it (which you shouldn't be doing on the mod), then unscrew the screw from the coil. There is much more that goes into getting a properly functioning coil though, so read through that thread.
Edit: 8-32 works just as well, like woofer suggested, and with 8 wraps you will get roughly the same resistance as 9 wraps around a 6-32.
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Great Thanks for the help I was hoping it was me didn't want to go through the hassle of warranties it's like a whole new world with this ni200
.. ok so used the 3 mm driver no machine screws until I get back to work on Monday did 9 wraps came out to .12 but still getting that temp protected prompt at 480F at only 6.5 watts starting to seem like a issue with the board coil was evenly spaced and plenty of airflow on the hobo to cool it made sure leads were secure not sure what else it could be after reading through the dna 40 build thread
.. ok so used the 3 mm driver no machine screws until I get back to work on Monday did 9 wraps came out to .12 but still getting that temp protected prompt at 480F at only 6.5 watts starting to seem like a issue with the board coil was evenly spaced and plenty of airflow on the hobo to cool it made sure leads were secure not sure what else it could be after reading through the dna 40 build thread
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I am getting this exact same problem. I've tried everything, what's weird is that I have a build that works, but the catch is I didn't build it. I assure you that the problem you are having is probably not a board issue, but more than likely just a build issue.
Hope this helps.
Hope this helps.
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