This looks like a great addition to your breadboard. [Nerdz] wanted a power supply that was easily portable and adjustable. He built a custom board that plugs directly into the breadboard’s ...

Otherwise, you can use an LD1117-3.3 or an LM7833. A bench supply or one of those cheap power supplies that plugs into a breadboard will work too. Just remember, the chip needs between 1.8V and 3 ...