Description
The MB102 is a compact, cost-effective regulated DC-to-DC step-down power injector built on a professional black PCB substrate. It is engineered to sit flush along one side of a standard electronic breadboard. This single-sided module takes a high-voltage input (from an AC/DC wall adapter or battery pack) and steps it down to steady, selectable micro-electronic logic rails (3.3V or 5V), turning on or off synchronously via a single master toggle switch. It is ideal for small-scale, lower-current circuits that require power along a single edge of the prototyping layout.
The XD-42 is an advanced, high-efficiency gate-style or U-shaped power regulation module built on a clean white PCB substrate. Unlike standard single-side models, the XD-42 straddles the entire width of a standard 830-point MB102 breadboard, clipping securely onto both the upper and lower power rails simultaneously. Featuring two completely isolated, independently switched voltage channels, it allows you to run 3.3V on one side of your breadboard and 5V on the other at the same time. Its hollow center leaves the central breadboard tie-points completely unobstructed for clutter-free wiring.
Features
MB102 — Single-Rail Profile
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Single-Edge Footprint: Occupies only one long edge power rail column of the breadboard, leaving the opposite side completely isolated for alternative battery sources or separate signal ground loops.
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Synchronized Master Shutoff: A single on/off button manages both output pins simultaneously for simple, unified circuit cut-offs.
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Dedicated USB-A Power Output: The onboard Type-A USB socket acts as a dedicated output tap, allowing you to run a secondary power cable out to an external microcontroller (like an Arduino Uno or NodeMCU).
XD-42 — Dual-Rail Profile
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Dual-Channel Independence: Equipped with two separate toggle switches to independently control power to the left and right rails.
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Mixed-Voltage Flexibility: Enables independent voltage selection (3.3V or 5V) for each rail, allowing you to power low-voltage 3.3V sensors and 5V microcontrollers or relays on the same board without cross-talk.
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Bi-Directional USB-A Port: The onboard USB-A port is bi-directional; it can output power to external hardware or accept a standard USB cable to power the entire module from a computer or power bank.
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Low Voltage Drop Design: Feeding power from both sides minimizes the electrical resistance overhead found in long breadboard traces, maintaining rock-solid voltage stability across complex circuits.
Specifications
MB102
PCB Substrate Color: Premium Matte Black
Mounting Architecture: Single-Sided Straight Overlay
Primary Voltage Regulator: AMS1117 Linear Regulator ICs
DC Barrel Jack Input: 7V to 12V DC (5.5×2.1 mm Center-Positive)
USB Socket Capability: Output Only (5V Regular Logic Tap)
Selectable DC Outputs: Configurable 3.3V or 5V
Maximum Output Current: <1.0 A (Combined Total Load)
Control Switches: 1x Master Interlocking Push-Button
Breadboard Compatibility: Universal Tie-Points
XD-42
PCB Substrate Color: Clean Prototyping White
Mounting Architecture: U-Shaped / Gate-Style Straddle
Primary Voltage Regulator: AMS1117 Linear Regulator ICs
DC Barrel Jack Input: 7V to 12V DC (5.5×2.1 mm Center-Positive)
USB Socket Capability: Bi-Directional (5V Input Power OR 5V Output)
Selectable DC Outputs: Dual Independent 3.3V or 5V per rail
Maximum Output Current: <1.0 A per channel (2.0 A Combined Max)
Control Switches: 2x Independent Toggle Power Switches
Breadboard Compatibility: Optimized for standard 830-Point MB102 boards
