Product Overview
Solderless Prototyping Power Adapter with USB and DC Barrel Jack Inputs
Condition
Condition is New. Components and pins are clean, straight, and unmounted. Markings legible: HW-131. Sold each.
Ships same or next business day from our Idaho warehouse. Honest pricing, no nonsense.
Online since 1999. We are here for our customers, with a no-hassle satisfaction guarantee.
Product Overview
Regulated power distribution module engineered for MB102 solderless breadboards. It accepts input voltage through a 5.5 mm x 2.1 mm center-positive DC barrel jack or a USB Type-A port, delivering jumper-selected 3.3V or 5V rails directly into prototyping breadboard power buses. Onboard AMS1117 linear regulators maintain steady voltage for microcontrollers, sensors, and analog prototype circuits.
Key Features
- Dual independent output rails configurable to 3.3V, 5V, or OFF via onboard selector jumpers
- DC barrel jack input accepts 6.5V to 12V DC (5.5 mm x 2.1 mm center-positive)
- USB Type-A female connector provides 5V input or auxiliary power breakout
- Center 8-pin auxiliary header provides convenient 3.3V, 5V, and ground tap points
- Onboard AMS1117 linear voltage regulators rated up to 700 mA maximum current
- Latching push-button switch controls master power with green LED indicator
- Downward-facing header pins fit standard 830-point and 400-point breadboard power strips
Applications
- Powering 3.3V and 5V logic circuits simultaneously on a single solderless breadboard
- Benchtop prototyping with microcontrollers such as Arduino, ESP8266, ESP32, and Raspberry Pi Pico
- Testing mixed-voltage sensor interfaces without separate bench power supplies or battery packs
- Educational lab work and hobbyist electronics projects requiring fast, switchable power rails
Frequently Asked Questions
How does the module mount to a breadboard?
Header pins on the underside plug directly into the positive and negative power distribution rails on each side of standard MB102 830-point or 400-point solderless breadboards.
Can the module output 3.3V on one rail and 5V on the other?
Yes. Each power rail has its own dedicated 3-pin jumper block, allowing independent configuration for 5V, 3.3V, or OFF.
What power source should be connected to the DC barrel jack?
A standard 6.5V to 12V DC power supply with a 5.5 mm x 2.1 mm center-positive barrel plug powers the linear regulators properly.
Can the USB Type-A port supply power to external devices?
Yes. When powered via the DC barrel jack, the USB port acts as a 5V output for auxiliary devices. The price per piece steps down with quantity, and the price-break table on this page shows each step.
A bench staple that turns tangled power leads into two clean rails at the press of a switch. Set your jumpers, plug in your project, and start testing.
