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  1. E

    PTH08T221W - 16A 88W w/ UVLO...

    Looking at the datasheet for the PTH08T221W, I'm guessing you have wired something that looks like Figure 24 on page 24? If your 10k resistor connects to the line that's labelled '1 = Inhibit' and Vin there should not be a problem, your pullup is on the gate of the fet and not on pin 11. One...
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    Soldering the pins on an OKR-T/10

    Firstly, your best friends when it comes to soldering these finicky parts: A nicely sized tip. Too big makes for clumsy use, too small and pointy makes for poor heat transfer. The size and shape of these two are the sort of thing you're looking for: Hakko T18-S7 - T18 Series Soldering Tip for...
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    DNA 30 passthru project...

    Good one. I have no idea but if Mamu likes the sound of such a device I'm sure she'll have a working prototype by the end of the week ;)
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    DNA 30 passthru project...

    You go girl :) Excellent news and great work finding those two resistors. I wouldn't share this mod with just anyone but I knew you were up to the challenge. Still, let me reiterate: Switch mode power supplies are very dangerous things to play with. High voltage in parts, the capacitors...
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    DNA 30 passthru project...

    My pleasure Mamu. There's a lot of words in this post as I've tried to dot the i's and cross the t's but really there is not much to it. Feel free to ask if anything is not clear. This is the schematic of a typical switch mode power supply (smps). Yours may not be exactly like this and...
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    DNA 30 passthru project...

    Nice work as always Mamu :) As you have discovered, the voltage dropped by a diode is dependent upon the current passing through the diode, as such, most (all?) diode datasheets will have a graph of voltage drop (usually called forward voltage, symbol Vf) against current. There is a way...
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    My little Mod http://www.e-cigarette-forum.com/forum/battery-mods/482340-another-dna-20-mod.html

    My little Mod http://www.e-cigarette-forum.com/forum/battery-mods/482340-another-dna-20-mod.html
    • ecat
    • Profile post
  8. E

    Designing a VV mod and would like some help

    For determining the resistance of the coil you need to measure the voltage across the coil and the current flowing through it (V=IR). You can probably rig up something using some resistors, a couple of opamps and one of the 328's ADC channels, or you can investigate the easy option...
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    DNA 30 in a VTR?

    The easy way: EC111012010H - ALPS - ENCODER, SELF RETURN, 11MM | Farnell UK It's 3 switches in one, push down, left and right. The hard way: https://www.sparkfun.com/products/9117 See http://www.e-cigarette-forum.com/forum/battery-mods/482340-another-dna-20-mod-2.html#post11228456 Also read...
  10. E

    Billet 6061 DNA30 Build

    I did a little research into surface finishes for aluminium: Any sort of spray paint, even with specialist primers looked to give variable results when used at home and even if a good, even finish were to be achieved and a adequate coat of lacquer applied I'd still question the durability in...
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    As Tribute to a Master Modder>>

    It was a post by Mamu - something about how a few years back she knew nothing about volts, amps, soldering, case work - that provided me with the inspiration to create my ADNA20 mod. It would be a sad day indeed if the disclaimer were to discourage the further involvement of Mamu or any of the...
  12. E

    18650 battery holder for dna20 build

    If the designers are on the ball you'll find the -ve case contact will be unable to touch the +ve end of an upside down battery. Looking at the image it is hard to determine if this is actually the case but it does look likely.
  13. E

    a simple mod

    That looks really good, so simple too. I'll have to investigate fiberglass one day. Nice mod :)
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    First dna20d mod- few questions

    Okay, lets use vewdew's link 5X 3 7V 1000mAh 1200mAh 25c LiPo Battery RC Walkera Wklipo 5 10 5G4Q3 Syma S006 | eBay as an example 1-cell Lithium Polymer Battery Volt: 3.7V Capacity: 1200mAh Plug-type: JST Maximum Continuous Discharge Rate:25C Size :62mm x 31mm x...
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    First dna20d mod- few questions

    Panasonic 3400mAh NCR18650B http://shop.battex.cz/pdf/NCR18650B-D.pdf appears to be protected, at least the data sheet says it has an internal PTC. Lacking in the data sheet is any mention of 'Maximum Discharge Current', the highest the charts show is 6.5A (with about a 0.5V drop!) but without a...
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    Another DNA 20 Mod

    Update 2013/11/18 to Post #26 http://www.e-cigarette-forum.com/forum/battery-mods/482340-another-dna-20-mod-3.html#post11293678 Changed Note1 on drawing to read 'from right' instead of 'from left'. In addition I must add: Please ensure wiring does not encounter any sharp case edges, use extra...
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    Anyone used GE UVT020A0X3-SRZ ?

    Nice case, love the bracket! Do you have the details on this build somewhere?
  18. E

    Another DNA 20 Mod

    Design files: The case walls are 3mm thick. This is overkill for aluminium, may be about right for 3d printing and may even be thick enough for wood. The only cut-out is the one for the display (and it's wrong! That's what happens when you follow the official documentation instead of getting out...
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    DNA20D Stealth Mod

    Very rough costing : $50 DNA20. $8 USB charger. $3 for each battery. $5 Buttons. Could be much more, could be much less. $7 A case. Could be more or less. Wires, connectors, glue, tools: depends on what you already have available, say $0 to $30? Say a base cost of around $70.
  20. E

    Failed the Milo build

    Ouch. Bad luck rizzo but as retrid says all is not lost. You could do away with the up/down buttons and add a potentiometer to change the Wattage as per the dna documentation. Let's see, no display means no flickering lights to attract attention: Milo Supper Stealth.
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