MB102 Breadboard Power Supply Module: 3.3V & 5V Output
MB102 Breadboard Power Supply Module with 3.3V and 5V Output
The MB102 Breadboard Power Supply Module provides a convenient way to supply 3.3V and 5V to your breadboard projects. With selectable output voltages via jumpers and multiple input options (USB or barrel jack), it simplifies prototyping. The compact design fits directly onto standard 830-point breadboards, offering stable power for microcontrollers and sensors. It is an essential tool for makers, educators, and students who need reliable, switchable power without soldering. The module includes an on/off switch and indicator LED, making it easy to see power status at a glance.
Key Specifications
| Specification | Value |
|---|---|
| Input Voltage (Barrel Jack) | 6.5V - 12V DC |
| Input Voltage (USB) | 5V DC |
| Output Voltages | 3.3V and 5V (selectable per rail via jumpers) |
| Maximum Output Current | 700mA (total across both rails) |
| Protection | Polyfuse (resettable) & reverse polarity |
| Dimensions | 53mm × 35mm × 22mm |
What You Can Build With This
- Prototype IoT sensor nodes using ESP8266 powered by 3.3V and 5V sensors simultaneously
- Create a USB-powered LED tester with selectable voltage levels
- Build a dual-voltage Arduino project that runs an ATmega328 at 5V while communicating with 3.3V modules
- Power a portable breadboard lab powered by a 9V battery through the barrel jack
Compatibility
The module plugs directly into the power rails of an 830-tie-point breadboard. It works with 5V boards like Arduino Uno (via barrel jack for 7-12V into Vin, or using the 5V output for direct power) and 3.3V boards like ESP8266/ESP32 development boards. It pairs well with logic-level converters and sensor modules that require separate voltage rails. The polyfuse protection adds safety during prototyping, preventing damage from accidental shorts.
Wiring Notes
Insert the module into the breadboard power rails with the output pins aligned to the red (+) and blue (-) strips. Set the jumpers to the desired voltage for each rail. When using a barrel jack supply, ensure center-positive polarity and voltage within 6.5-12V to avoid damage. Do not draw more than 700mA total across the two output rails. The on/off switch controls power to both rails.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino Uno?
Yes, you can power an Arduino Uno by connecting the module’s barrel jack (7-12V) to the Uno’s Vin pin, or by using the 5V output to power the Uno’s 5V pin directly. Ensure the total current draw does not exceed the module’s rating.
Can I use both 3.3V and 5V outputs at the same time?
Absolutely. Each rail is independently selectable via jumpers. As long as the combined current from both rails stays under 700mA, you can run 3.3V and 5V circuits simultaneously.
Does it include a power adapter?
No, the module does not come with a wall adapter or battery clip. You’ll need a USB cable or a 9V battery with a barrel jack adapter (center-positive) to power it.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items