Bring power to your prototypes with this convenient new kit –
This power supply module plugs straight into common bread boards, allowing you to cleanly and easily power your board with a wall wart plug or with wires into screw terminals. It features a variable voltage regulator that can be set to output 3.3 or 5V with a jumper, or any voltage if a potentiometer is added. The input has a rectifier that accepts AC or DC (polarity doesn’t matter)–just make sure the input is about 2V greater than the output you want.
An easy way to enable those red and blue lines we so often jumper into usefulness – Plug-in Bread-Board Power Supply