The MB102 Breadboard Power Supply Module is a must-have accessory for any student, hobbyist, or professional working with breadboards. It is designed specifically to clip onto the top rails of a standard 830-point or 400-point MB102 breadboard. Featuring two independent voltage regulators, it allows you to configure your top and bottom power rails separatelymeaning you can run 5V logic on one side and 3.3V sensors on the other simultaneously.
Dual Independent Rails: Standard jumpers let you set each power rail to 0V (OFF), 3.3V, or 5V completely independently.
Dual Input Options: Power the board via a standard 2.1mm DC Barrel Jack (from a wall adapter) or via a convenient Type-A USB port.
Bonus USB Output: When powered via the DC jack, the onboard USB port can act as an output to power external 5V devices.
Onboard Protection: Features an integrated self-recovering fuse to protect your laptop or adapter from accidental short circuits on the breadboard.
Visual Status: Built-in LED power indicator lets you know at a glance if your circuit is receiving clean power.
| Feature | Specification |
| Model | MB102 Power Module |
| Input Voltage (DC Jack) | 6.5V to 12V DC |
| Input Voltage (USB) | 5V DC |
| Output Voltage | 3.3V / 5V DC (Selectable via Jumpers) |
| Maximum Output Current | < 700 mA |
| Compatibility | Fits standard MB102 Breadboards (Standard pitch spacing) |
| Controls | Latching ON/OFF tactile switch |
Saves Microcontrollers: Stops you from accidentally burning out your Arduinos internal regulator by pulling too much current for motors or screens.
Clean Layout: Keeps your breadboard clear of messy jumper wires stretching from your microcontroller to the power rails.
Perfect Mixer: Easily test 3.3V modern chips (like the Pi Pico or ESP32) alongside older 5V components without needing separate power blocks.
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