MB102 Breadboard Power Supply Module 3.3V 5V

This module clips directly onto the power rails of an MB102-size breadboard and turns a barrel jack or USB supply into clean, regulated 3.3V or 5V - selectable per rail - without a bench power supply or a separate voltage regulator circuit taking up breadboard space. Independent channel control means the two rails can run different voltages simultaneously, useful when a project mixes 3.3V logic with 5V peripherals on the same board.

Input accepts 6.5V to 12V DC through either the barrel jack or USB, and a locking on/off switch with an LED indicator makes it obvious at a glance whether power is live before touching a circuit. Up to 700mA output covers most breadboard prototyping loads without strain.

Standard power source for breadboard prototyping: sensor testing, small circuit experiments, and any build still on the breadboard where a dedicated bench supply would be overkill.