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First DNA200 build 1550p chassis dual 18650


UKDTweak

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Hi, been lurking a few days on here while I waited for my chip and components to arrive, so this is my first post.

I have seen a  few posts touch on this area but not seen the answer im looking for directly, so sorry if this has been asked and answered before.. ive just not found it.

I have my Hammond 1550p all cut etc, ill be running this with dual 18650's and have a sled sized to fit.
Now I have to just solder all the wires and fit it all to the case but here is were im a little unsure.

The 510 will by very tight to the top of the board due to the small size of the 1550p.. this is were the output wires to the 510 need to go, so I will have to mask the wires off with insulating tape once they are soldered. to ensure they don't short on the bottom of the 510 connector. 
I will be attaching the board to the metal case using brass standoffs and steel screws, thus the board will be earthed to the case, as will the 510... can I get away with only soldering the 510 positive and Not the 510 earth wire as I had done on my DNA40 build, as I understand they are internally connected on the board?

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Yes you can use the metal case as a common ground, be careful that the stand off and screws are slim and don't extend beyond the tinned area around the holes.

From p16 of the datasheet

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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Thank you for the reply and confirmation, hopefully ill get this baby built tonight and finally get to see how good this chip is :)
Ill be using a DNA200 mounting kit I bought from Stealthvape, the screws and standoffs should be the correct sixe for the ground pads.
This is my First DNA200 build and after building a DNA40 into the 1550p, I love its form factor and size, so hopefully it works, if not I have a CNC 806024 box from modmaker as a backup which should allow a little more room for the 510.

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UKDTweak said:

Thank you for the reply and confirmation, hopefully ill get this baby built tonight and finally get to see how good this chip is :)
Ill be using a DNA200 mounting kit I bought from Stealthvape, the screws and standoffs should be the correct sixe for the ground pads.
This is my First DNA200 build and after building a DNA40 into the 1550p, I love its form factor and size, so hopefully it works, if not I have a CNC 806024 box from modmaker as a backup which should allow a little more room for the 510.

Mine worked ok. I used a mamu cradle to hold the board inside. And my box is the alpine tech cnc 1550p which is 3.5 mm taller and 2.5mm wider

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Yeah i used your pictures posted in the Show us your DNA thread, as a rough guide and ground my sled down and underneath the screw posts etc... but the 510 was still too close to the board, so now i have a washer under the 510... looks like a bad fat daddy... but it is all built and working, but its near 2am and ive to be up at 6.30 so ill have to post later today in work... ill try to get up pictures then..

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