MB102 Breadboard Power Supply – Dual Output 3.3V & 5V for DIY Electronics

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The MB102 Breadboard Power Supply Module is an essential tool for electronics enthusiasts, students, and engineers working on breadboard-based projects. Designed for convenience and reliability, it converts a 6.5V–12V DC input into stable 3.3V and 5V outputs, making it ideal for powering microcontrollers (Arduino, ESP8266, STM32), sensors, and other low-power components. Its compact design fits directly onto a standard breadboard, eliminating messy wiring and unstable voltage issues.

Key Features & Benefits:

✅ Dual Output Voltage – Provides both 3.3V and 5V simultaneously for versatile project compatibility.
✅ Wide Input Range (6.5V–12V) – Works with various power sources, including 9V batteries, wall adapters, and USB power banks.
✅ Stable & Reliable – Built-in voltage regulators (LM1117 for 3.3V, AMS1117 for 5V) ensure clean, ripple-free power.
✅ LED Indicators – Visual confirmation of power status for both voltage outputs.
✅ Breadboard-Friendly – Directly plugs into standard 400/830 tie-point breadboards.
✅ Overcurrent & Short-Circuit Protection – Safeguards your components from accidental damage.

Applications:

✔ Powering Arduino, ESP8266, Raspberry Pi Pico, and other microcontrollers
✔ Prototyping sensor circuits, LED projects, and motor drivers
✔ Testing logic circuits, op-amps, and digital ICs
✔ Educational electronics labs and DIY hobbyist projects

Comparison with Similar Products:

Unlike basic voltage regulators, the MB102 integrates dual outputs, reverse polarity protection, and a breadboard-friendly design, making it superior to single-output modules. Compared to USB-powered breadboard adapters, it supports a wider input range (6.5V–12V) and delivers more stable power for sensitive electronics.

Technical Specifications:

1. Input Voltage: 6.5V–12V DC
2. Output Voltages: 3.3V (±0.05V) & 5V (±0.05V)
3. Max Output Current: 700mA (shared between both outputs)
4. Regulator ICs: LM1117 (3.3V), AMS1117 (5V)
5. Weight: 10g
6. Connector Type: 2.1mm DC jack (barrel plug)
7. Breadboard Compatibility: Standard 400/830 tie-point breadboards
8. Protections: Overcurrent, short-circuit, and reverse polarity protection

FAQ:

1. Can I power the MB102 with a 9V battery?

Yes! The MB102 accepts 6.5V–12V input, so a 9V battery works perfectly.

2. What’s the maximum current output for 5V and 3.3V?

The total shared current is 700mA (e.g., 500mA on 5V + 200mA on 3.3V). Avoid exceeding this limit.

3. Does it work with Raspberry Pi or ESP32?

Yes! It’s great for ESP32, Raspberry Pi Pico, and other 3.3V/5V logic devices.

4. Can I use a USB power source?

No, the MB102 requires 6.5V–12V DC input (e.g., a 9V adapter). For USB power, consider a USB breadboard adapter instead.

5. Is reverse polarity protection included?

Yes! The module is protected against accidental reverse voltage connection.