Quantity   Component name
1 × USB to 3.3V / 5V DC-DC Step-Down Power Supply Buck Module AMS1117 LDO
1 × 2.54mm 0.1" Pitch Female Header Strip 2x3 Pin With Polarizing Key
1 × 2x8cm (or similar) protoboard
1 × a male to female ("extender") USB cable, optional
1 × a couple single male header pins