My first mod was a kit from madvapes to get me started. A simple 5 volt box.
My second is a variable voltage 3.3v-8.4 with display.
Just finished yesterday - sorry about the crappy photo. It is based on steeljan's youtube video. Seriously easy. purchased the led readout and the variable voltage module from eBay.
As you can see the voltage readout is upside down so I can read it while vaping. here I am at 5.3 volts.
Total cost was about $12 as I had most of the parts already.
My second is a variable voltage 3.3v-8.4 with display.
Just finished yesterday - sorry about the crappy photo. It is based on steeljan's youtube video. Seriously easy. purchased the led readout and the variable voltage module from eBay.

As you can see the voltage readout is upside down so I can read it while vaping. here I am at 5.3 volts.
Total cost was about $12 as I had most of the parts already.