12V/5V Power Supply Hookup Guide - SparkFun Learn

Benchtop Power Board Kit Hookup Guide - SparkFun Learn

Mean Well LED Switching Power Supply Hookup Guide - SparkFun Learn

Power Supply - 5V, 4A - TOL-15352 - SparkFun Electronics

SparkFun ATX Power Connector Breakout Kit - 12V/5V (4-pin) - KIT-15701 - SparkFun Electronics

SparkFun Pro Mini ATmega328-5V/16MHz Development Board Compatible with Arduino Boards and IDE : Electronics

PRT-00114: Here is a very simple breadboard power supply kit that takes power from a DC wall wart and outputs a selectable 5V or 3.3V regulated voltage. The .1 headers are mounted on the bottom of the PCB for simple insertion into a breadboard. Pins labeled VCC and GND plug directly into the power lines. The lone pair of pins have no electrical connection but help support the PCB. There are two pins available within the barrel jack footprint.

SparkFun PRT00114 Breadboard Power Supply 5V/3.3V

Benchtop Power Board Kit Hookup Guide - SparkFun Learn

Benchtop Power Board Kit Hookup Guide - SparkFun Learn

12V/5V Power Supply Hookup Guide - SparkFun Learn

Battery Babysitter Hookup Guide - SparkFun Learn