This is a very simple board that takes a 6-12V input voltage and outputs a selectable 5V or 3.3V regulated voltage. All headers are 0.1" pitch for simple insertion into a breadboard. Input power can be supplied to either the DC barrel jack or the two pin header labelled + and -. Output power is supplied to the pins labelled GND and VCC. Board has both an On/Off switch and a voltage select switch (3.3V/5V). The two sets of four GND and VCC holes are spaced such that when connected to our Basic Breadboard both power busses will be powered. Note: Headers are not supplied. You will need to supply your own headers to connect this board to a breadboard. Features * 6-12V input voltage via barrel jack or 2-pin header * 3.3V or 5V regulated output voltage * 800mA Operating Current * ON/OFF switch * Output voltage select switch * Power status LED * PTC fuse protected power * 5.5x2.1mm centre-positive barrel jack * 2.15 x 0.65" Resources * Schematic * Eagle Files * Unregulated Power Supply Tutorial * GitHub (Design Files) https://elecena.pl/product/22720977/sparkfun-breadboard-power-supply-stick-5v-3-3v 2023-03-07 https://elecena.pl/product/22720977/sparkfun-breadboard-power-supply-stick-5v-3-3v 2023-07-05 https://elecena.pl/product/22720977/sparkfun-breadboard-power-supply-stick-5v-3-3v 2023-12-27 https://elecena.pl/product/22720977/sparkfun-breadboard-power-supply-stick-5v-3-3v 2024-09-19 https://elecena.pl/product/22720977/sparkfun-breadboard-power-supply-stick-5v-3-3v 2024-11-29 https://elecena.pl/product/22720977/sparkfun-breadboard-power-supply-stick-5v-3-3v 2024-11-30 https://elecena.pl/product/22720977/sparkfun-breadboard-power-supply-stick-5v-3-3v 2025-04-10 https://elecena.pl/product/22720977/sparkfun-breadboard-power-supply-stick-5v-3-3v 2025-08-05 https://elecena.pl/product/22720977/sparkfun-breadboard-power-supply-stick-5v-3-3v 2025-11-28 https://elecena.pl/product/22720977/sparkfun-breadboard-power-supply-stick-5v-3-3v 2025-11-29