Arezus Stick Screwdriver

This project allows you to make your own electric screwdriver like Xiaomi Wowstick.

Print both parts with flat side down. The Tsang model should be printed vertically.

The screwdriver body guts consist of four main blocks.

First: The charger board
The CB I used is a LiIon charger from China with indicator LEDs and undercharge protection. In the right side of the body there is a well for charge state indicators (red/blue). It can be filled with some transparent hot glue or plugged with a piece of acrylic window. I left it as is.
Example: http://www.ebay.com/itm/1A-Micro-USB-18650-Lithium-Battery-Charging-Module-LED-Charger-Board-Protection-/112520617292

Second: LiIon 18650 cell
Here you can use almost any 18650 cell, for example from old laptop battery. The capacity of cell will effect the working time of screwdriver. In my case the consumption was around 30-100 mA, so it will work very long.

Third: The Switch
You will need a DPDT ON-OFF-ON switch with 6 pins to m