Mini Breadboard Power Supply – 3.3V & 5V Dual Output (BB‑PS‑02)

A compact Mini Breadboard Power Supply (BB‑PS‑02) designed to deliver reliable, regulated 3.3 V and 5 V outputs for breadboarding and prototyping work. The board plugs directly into standard solderless breadboards and provides clean power for microcontrollers, sensor modules, logic circuits, and other low‑voltage electronics.

Power can be supplied through a 2.1 mm barrel jack or a mini‑USB connector, offering flexibility when working at the bench or on the go. On‑board regulators ensure stable output, while jumper headers allow independent selection of 3.3 V or 5 V for each breadboard rail. See our economically priced 12v DC Wall Adapter.

Features

• Compact board designed to plug directly into standard solderless breadboards
• Two regulated outputs: 3.3 V and 5 V
• Independent voltage selection for each rail using jumpers
• Power input options:
  • 2.1 mm DC barrel jack (centre‑positive)
  • Mini‑USB connector
• On‑board power switch and status LED
• Lightweight, ideal for portable and educational projects

Specifications

• Model: BB‑PS‑02
• Input Voltage: 6.5–12 V DC (barrel jack) or 5 V (mini‑USB)
• Output Voltages: 3.3 V and 5 V (regulated)
• Maximum Output Current: Up to 500 mA (based on input source)
• Connectors:
  • 2.1 mm barrel jack
  • Mini‑USB input
• Breadboard Compatibility: Standard solderless breadboards
• Dimensions: Approx. 46 mm × 34 mm

Applications

• LED Projects, Arduino, ESP, and Raspberry Pi Pico prototyping
• Logic circuits and low‑voltage breadboard development
• Sensor and breakout module testing
• STEM education and electronics learning projects

A practical, inexpensive solution for powering breadboard circuits, well‑suited to students, hobbyists, engineers, and makers working on compact electronic projects.