Easy electronice cigarette powered by usb powerbank.
Step 1: Basics
You wil need resistance wire, soldering iron, multimeter, usb conector (male), switch, two screws, some box or tube and universal soldering board.
Max current of the powerbank is 2,1A, working curent is about 1,5A, resistance in according to ohm law is then cca 3,3 ohms - table of resistance for example here
Lenght of wire can be taken with multimeter or from the specific resistance (my wire has 2,2 ohms/feet).
Step 2: Box
There is 3 holes to the box, one for usb conector, one for switch from the back side, one for mouth.
Step 3: Wire
Wire is coiled to the spiral with loop in the ends for puting to the screws
Step 4: Back Side of Board
Usb conector and switch solder in board, conecting wires fixed by the screws.
Step 5: Box - Back Side
Back side of the box with hole for the switch