Buck Voltage Converter

Adjustable Voltage converter

For Potentiometer i use carbon rod and glue a small metallic lamelle

T connector cap:
http://www.thingiverse.com/thing:814968

Female Usb connector cover:
http://www.thingiverse.com/thing:650546

Bulk converter:
http://www.hobbyking.com/hobbyking/store/__26910__Kingduino_LM2577_DC_DC_Adjustable_Step_up_Power_Converter_Module.html

JST connector:
http://www.hobbyking.com/hobbyking/store/__9631__JST_Male_2_Pin_Connector_Set_10pcs_set_.html

XT60 Conn