FYI
MOSFET (URL here: http://goo.gl/
xuou4g). You will notice that there
are 3 legs on the chip. The first leg is
known as the “Gate”. This will connect
to the master on/off switch which is also
connected to the fire switch.The second
(middle) leg of the MOSFET is called
the “Drain” and will connect to the outer
housing of your 510 connector. If you
are using a Fat Daddy or Varitube spring
loaded 510, you will want to connect
this leg to the negative connector on the
510. The last leg of the MOSFET is the
“Source” and will connect directly to the
negative contacts of your battery sled.
Before wiring any of these legs, we
need to first solder the 15k ohm resistor
to the MOSFET. This 15k ohm resistor
will connect to the outside legs of the
MOSFET which is the gate and source.
I personally prefer to solder the 15k ohm
resister to the back of the MOSFET.
This is just my personal preference,
but if you look at the MOSFET, you will
see that there is a perfect empty spot
for this resistor. After soldering all your
connections to the MOSFET, go ahead
and use some heat shrink tubing on all
connections. This will prevent the legs of
the MOSFET shorting out on each other.
Now that the MOSFET is done, let’s
move onto the battery sled.
Battery Sled Wiring
Since we are wiring this unregulated box
mod in parallel, we will need to wire the
battery sled so that the negatives are
connected together and the positives are
connected together. This will produce the
4.2v battery output and also double the
mAH of your mod. The negative contacts
will be connected together with a short
piece of 16g wire. Go ahead and solder
the contacts. The positive contacts will
also be connected together but it will
first go through two 15 amp fuses. This
will give you the 30 amp hold and 60
amp trip as mentioned earlier. Once you
have prepared your battery sled, start
protecting each connection with heat
shrink.
Master On/Off Switch Wiring
Looking at the on/off switch you will
see that it has 3 separate legs. This is
pretty simple to wire, because we are
only going to use the middle leg and one
of the outside legs. You can use either
outer leg that you want. Whichever outer
leg you choose will become the “on”
position. The legs on this on/off switch
are longer than we need, so I always
like to trim them down before making my
connections.The middle leg of the on/
off switch will later be connected to the
158 WINTER EDITION VAPOUROUND MAGAZINE
MOSFET, and the outside leg will end up
connecting to the fire switch.
510 Connector Wiring
A standard 510 connector wiring is
pretty straight forward. The middle pin
is the positive connection and the outer
housing is the negative connection.
Simply solder your 16g wires to the
corresponding locations. The wiring
is slightly more involved if you decide
to upgrade to a spring loaded 510
connector, but don’t worry, I have made
another video dedicated to this topic as
well. The title of that video is “MOD TIPS
#03 – Fat Daddy vs Varitube Spring
Loaded 510 Connector” (the URL is
here: https://youtu.be/9PFJyiA6VmQ).
Let’s Put it All Together!
Since you have all the individual parts
fully wired already, all that is left is
connect everything together.
Make sure that you follow the video
tutorial on my website for full details and
the final wiring. Please refer the provided
wiring diagram as well. Once you
have everything successfully soldered
together, we can now try our new
unregulated box mod! Please remember
that this box mod is wired in parallel. This
means that you MUST place both 18650
batteries in an upright position. Both
positives need to face up when placed
inside the sled
Final Thoughts:
You should now have an awesome box
mod that you created yourself. Give
yourself a pat on the back and show off
to all your friends! Like all box mods,
there are multiple ways to wire your
project. The way that I showed you in the
aforementioned video, is what I believe
to be the easiest and that which provides
the most options. We were able to
include several safety features into this
box mod that you may not find in other
diagrams. Of course, feel free to use any
wiring diagram that you feel comfortable
with. Overall, this is a very simple and
basic unregulated box mod and would
be the perfect project for the first-time
modder. As mentioned earlier, I do carry
fully complete DIY Box Mod Kits on this
site. You can see them at
www.Shop.FindMyVapes.com
For more information about Fred and his
fantastic mod-making skills, reviews on
mods, e-juices and tutorials, head over
to www.findmyvapes.com now.
By Fred
Website: www.findmyvapes.com
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