SHILLEHTEK Universal Power Supply Module
4.6Editor score
Universal MB102 compatibility
Dual 3.3V and 5V output
Flexible USB or DC input
In this guide
Choosing the right power source is critical for any electronics project. A reliable 12V Breadboard Power Supply ensures your components receive stable voltage without risking damage from fluctuations or shorts during testing phases.
We evaluated ten top-rated modules based on input versatility, output stability, and ease of integration. Our comparison focuses on how well each unit supports common microcontrollers like Arduino and Raspberry Pi in real-world scenarios.
Each pick highlights specific strengths such as dual-channel control or high current output. Keep in mind that availability and pricing fluctuate frequently, so verify current stock before making your final purchasing decision today.
Top 3 Picks for Best 12V Breadboard Power Supply
2-Pack Breadboard Power Supply Module
4.5Editor score
Dual power input versatility
Independent channel control
Onboard short-circuit protection
LM2596 Multi Channel Switching Power Supply
4.8Editor score
Wide input voltage range
Adjustable voltage output
Multiple channel support
Top 10 Best 12V Breadboard Power Supply in 2026 Compared
This side-by-side comparison highlights the key specifications and capabilities of each selected model to help you identify the best fit for your specific prototyping needs.
ProductsSpecificationsEditor scorePrice
Editor's Choice
2-Pack Breadboard Power Supply Module
Input 6-12V or Type-C
Output 3.3V or 5V
Current 2A or 1A
Short-circuit protection included
4.5Editor score
Editor's Choice
WWZMDiB 5 Pcs Power Supply Module
Input 6.5-12V DC
Output 3.3V or 5V
Current below 700mA
Includes 5 Pcs 9V connector
4.2Editor score
Best Premium
HJ Garden Electronic Component Power Supply
Includes 12V 1A Adaptor
Output 3.3V or 5V
Current 700mA Max
Compatible with Arduino projects
4.0Editor score
HiLetgo 5pcs Power Supply Module
Input 6.5-9V or USB
Output 3.3V or 5V
Current below 700mA
Onboard dual output pins
4.3Editor score
SHILLEHTEK Universal Power Supply Module
Input 6.5-12V DC
Output 3.3V or 5V
Plug into MB102
Universal compatibility
4.6Editor score
5 Pack Breadboard Power Supply Module
Input 6.5-12V DC
Output 3.3V or 5V
Current below 700mA
Includes 9V connectors
4.5Editor score
DIY Breadboard Power Supply Soldering Kit
Adjustable output voltage
Built-in display
Includes negative voltage support
Multi-output capability
4.1Editor score
SunFounder BreadVolt Breadboard Power Supply
Output 5V/1.5A
Output 3.3V/1A
USB output included
Portable and compact
4.5Editor score
LM2596 Multi Channel Switching Power Supply
Input 5V-40V
Output 3.3V/5V/12V
Adjustable voltage output
Multiple channel support
4.8Editor score
Wefomey Universal Power Supply Variable
Output 3-24V Adjustable
Max 3A 72W
Includes multiple DC tips
LCD voltage display
4.5Editor score
1. 2-Pack Breadboard Power Supply Module – Best Overall 12V Breadboard Power Supply
2-Pack Breadboard Power Supply Module
Dual Power Input Versatility
Independent Right Left Control
Breadboard Compatible Design
Short-Circuit Protection Onboard
This dual-channel module stands out for its versatility and value, receiving a solid 4.5 rating from users who appreciate its modern input options. It supports both Type-C and traditional DC inputs, making it highly adaptable for different power sources.
Pros
- Supports Type-C and DC inputs
- Independent switches for each rail
- LED status indicators included
- Excellent value with two units
- Compact design saves breadboard space
Cons
- No included power adapter
- May need Type-C cable separate
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The independent control for left and right channels allows you to run different voltages simultaneously, which is crucial for mixed-signal projects. The onboard short-circuit protection ensures your sensitive components remain safe during experimentation.
While it lacks an included adapter, the flexibility to use phone chargers or power banks often outweighs this minor inconvenience. The visual LED indicators provide clear confirmation that power is active on your chosen rails.
This unit is ideal for hobbyists and educators needing multiple reliable power sources at a reasonable price. Its secure fit on standard MB102 breadboards ensures stability during active prototyping sessions.
Flexible Power Input Options
Using Type-C USB allows for modern charging cables and power banks, while the DC jack accepts traditional adapters for lab setups.
Independent Channel Control
You can power one side at 3.3V for logic and the other at 5V for sensors without complex wiring or extra regulators.
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2. WWZMDiB 5 Pcs Power Supply Module – Best Value Pack for Bulk Needs
WWZMDiB 5 Pcs Power Supply Module
Input 6.5-12V DC or USB
Output 3.3V or 5V
Current below 700mA
Includes 5 Pcs 9V Connector
This five-piece pack offers exceptional value for classrooms or workshops needing multiple power sources. Users rate it 4.2, noting its simplicity and inclusion of useful connectors for quick setup.
Pros
- Five units in one package
- Includes 9V connectors
- Compatible with standard breadboards
- Simple plug-and-play design
Cons
- Lower current capacity than premium models
- Basic build quality
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Each module supports 6.5V to 12V input and provides selectable 3.3V or 5V output. The included 9V connectors make it easy to power these boards from batteries when outlets are unavailable.
The main limitation is the current rating, which caps below 700mA. This is sufficient for most logic circuits but may not support high-draw components like motors directly.
Ideal for students or makers building several projects simultaneously, this pack ensures you always have a spare module ready. Its standard fit works seamlessly with common solderless breadboards.
Bundle Value for Workshops
Having five units means you can equip multiple desks or have backups for failed prototypes without worrying about running out.
9V Connector Convenience
The included connectors allow quick connection to 9V batteries, making mobile prototyping easier without needing a wall adapter.
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3. HJ Garden Electronic Component Power Supply – Best Starter Kit with Adapter
HJ Garden Electronic Component Power Supply
Includes 12V 1A Adaptor
Output 3.3V or 5V
Current 700mA Max
Compatible with Arduino projects
This kit is perfect for those starting out, as it includes everything needed to power a project immediately. With a 4.0 rating, users appreciate the convenience of having an adapter and board included in the package.
Pros
- Includes power adapter and breadboard
- Good for beginners
- Includes jumper wires
- Stable power output
Cons
- Breadboard quality varies
- Kit components may be generic
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The power module itself supports 6.5V to 12V input and offers 3.3V or 5V outputs. It is compatible with popular boards like Arduino and Raspberry Pi, making it a versatile choice for common microcontrollers.
While the breadboard and jumpers are functional, they are standard quality and may not suit heavy-duty industrial use. However, for hobbyist experiments, they provide a solid foundation.
We recommend this kit for educators or students who need a complete package. The inclusion of the 12V adapter ensures you can start prototyping right away without purchasing extra components.
Complete Package Convenience
Getting the adapter and breadboard in one box saves time and ensures compatibility between all components.
Ideal for Education
Teachers can use this kit for multiple students, knowing each has the necessary power supply to complete assignments.
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4. HiLetgo 5pcs Power Supply Module – Reliable Classic Option
HiLetgo 5pcs Power Supply Module
Input 6.5-9V or USB
Output 3.3V or 5V
Current below 700mA
Onboard dual output pins
HiLetgo is a trusted name in hobby electronics, and this pack maintains that reputation. Users rate it 4.3, highlighting its reliability and compact design that fits well on crowded boards.
Pros
- Five units included
- Compact and lightweight
- Standard MB102 fit
- USB power support
Cons
- Lower input voltage range
- No independent channel switches
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Each module accepts 6.5V to 9V input or USB power. You can switch between 3.3V and 5V outputs easily. The dual output pins allow flexible routing for your circuit connections.
The lack of independent switches for each rail is a minor drawback compared to dual-channel models. However, for simple projects needing one voltage rail, this works perfectly well.
This is a solid choice for general electronics needs where space and cost are key factors. The USB support adds convenience for testing on laptops or portable power banks.
USB Power Capability
Running from USB allows you to test circuits directly connected to a computer without needing an external wall adapter.
Compact Footprint
The small size ensures you don't waste valuable breadboard real estate on the power supply itself.
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5. SHILLEHTEK Universal Power Supply Module – Best Budget Pick
SHILLEHTEK Universal Power Supply Module
Input 6.5-12V DC
Output 3.3V or 5V
Plug into MB102
Universal compatibility
As the best budget option, this module delivers high performance at a low cost. With a 4.6 rating, users praise its ability to plug directly into standard breadboards without extra wiring.
Pros
- Very affordable
- Simple plug-and-play
- Supports wide input range
- Stable voltage output
Cons
- Single unit packaging
- Basic features only
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It accepts 6.5V to 12V DC or USB power, making it versatile for different environments. The output switches between 3.3V and 5V, covering most common voltage requirements for microcontrollers.
The simplicity is its strength, though advanced features like independent rail control are missing. For basic power needs, this reliability and efficiency stand out in the budget category.
This unit is perfect for anyone on a tight budget who still wants quality. It works well with ESP32 and Arduino projects, ensuring stable power for your development work.
Affordable Quality
You get reliable power conversion without the premium price tag, making it accessible for all hobbyists.
Universal Fit
Designed to work seamlessly with MB102 breadboards, ensuring it fits securely and maintains good electrical contact.
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6. 5 Pack Breadboard Power Supply Module – Bulk Value with Connectors
5 Pack Breadboard Power Supply Module
Input 6.5-12V DC
Output 3.3V or 5V
Current below 700mA
Includes 9V connectors
This pack offers great value with five units and included connectors. A 4.5 rating reflects its reliability for general prototyping needs. The LED indicators help you confirm power status at a glance.
Pros
- Five modules included
- Includes 9V connectors
- LED status indicators
- Simple on/off switch
Cons
- Fixed regulated output
- Low current capacity
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Each module accepts 6.5V to 12V input or USB. You can choose between 3.3V or 5V output via a jumper. The 9V connectors included are handy for battery-powered setups.
The fixed regulated output simplifies design but limits flexibility for custom voltages. Additionally, the current limit below 700mA means it is best suited for low-power circuits.
Ideal for classrooms or labs with multiple stations, this pack ensures everyone has a power source. The easy operation makes it suitable for beginners learning electronics basics.
Battery Operation Ready
The included 9V connectors allow you to run projects off batteries easily when power outlets are scarce.
Visual Feedback
LED indicators provide immediate visual confirmation that the module is active and providing power to your circuit.
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7. DIY Breadboard Power Supply Soldering Kit – Best Advanced Soldering Project
DIY Breadboard Power Supply Soldering Kit
Adjustable output voltage
Built-in display
Includes negative voltage support
Multi-output capability
This kit appeals to makers who want a custom power solution. A 4.1 rating suggests users appreciate the advanced features but note the assembly requirement. It features a built-in display for precise voltage setting.
Pros
- Adjustable voltage with display
- Includes negative voltage
- Great for learning soldering
- Multi-output design
Cons
- Requires soldering skills
- Higher complexity for beginners
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The module offers 3.3V, 5V, 12V, and adjustable outputs. Including negative voltage support makes it suitable for analog circuits. This versatility sets it apart from standard modules.
You must solder the components yourself, which can be challenging for beginners. However, this process helps you understand how the power supply works internally and improves your technical skills.
If you want adjustable voltage and advanced features in a breadboard format, this kit delivers. It is ideal for labs or makerspaces where detailed power control is required.
Precision Voltage Control
The built-in display lets you see the exact voltage output, ensuring your components receive the exact power they need.
Negative Voltage Support
Support for negative voltages opens up possibilities for analog circuits that require dual rail power supplies.
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8. SunFounder BreadVolt Breadboard Power Supply – High Current Output
SunFounder BreadVolt Breadboard Power Supply
Output 5V/1.5A
Output 3.3V/1A
USB output included
Portable and compact
This module stands out for its high current output, rated at 4.5 by users. It provides 5V at 1.5A and 3.3V at 1A, which is sufficient for more demanding components like Raspberry Pi.
Pros
- High current output
- Includes USB output port
- Compact size
- Simple on/off switch
Cons
- Breadboard not included
- Slightly higher price
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The built-in USB output is a unique feature that allows you to power USB devices directly. Its compact size ensures it does not clutter your workspace while maintaining stable operation.
Note that the breadboard is not included, so you must have one ready. The price is slightly higher than basic modules, but the increased current capacity justifies the investment.
Ideal for IoT and robotics projects needing more power than standard modules provide. The stability and reliability make it a strong choice for complex development work.
Extra USB Port
The included USB output port lets you power peripherals directly without needing additional adapters or cables.
Compact Design
The small form factor saves space on your breadboard, leaving more room for components and wiring.
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9. LM2596 Multi Channel Switching Power Supply – Best Premium Adjustable Module
LM2596 Multi Channel Switching Power Supply
Input 5V-40V
Output 3.3V/5V/12V
Adjustable voltage output
Multiple channel support
This premium module offers exceptional versatility with an input range of 5V to 40V. Users rate it 4.8, praising its ability to handle diverse voltage needs efficiently without overheating.
Pros
- Wide input voltage range
- Adjustable output capability
- High efficiency switching
- Supports multiple channels
Cons
- Requires external power source
- More complex to wire
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It supports fixed 3.3V, 5V, 12V outputs and adjustable options. This flexibility is unmatched in standard breadboard modules. It uses switching regulation for high efficiency and minimal heat generation.
The complexity of wiring multiple channels might be daunting for beginners. However, for advanced projects requiring precise voltage control, this module provides professional-grade performance.
We recommend this for labs needing a reliable source for various electronics. It handles heavy loads well and ensures stable output even as input voltage varies.
Wide Input Range
Accepting 5V to 40V allows you to use different input sources without worrying about damaging the module.
Adjustable Output
Being able to adjust the voltage gives you the freedom to experiment with different components and voltage requirements easily.
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10. Wefomey Universal Power Supply Variable – Best High-Power Adapter
Wefomey Universal Power Supply Variable
Output 3-24V Adjustable
Max 3A 72W
Includes multiple DC tips
LCD voltage display
This adapter is a powerful tool for high-demand projects. A 4.5 rating reflects its reliability and wide output range. The LCD display shows real-time voltage, ensuring accuracy during use.
Pros
- Adjustable voltage up to 24V
- High 3A current capacity
- LCD display for monitoring
- Includes multiple tips
Cons
- Larger footprint than modules
- Requires DC input to board
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It provides 3V to 24V adjustable output at 3A. The included DC tips allow connection to various devices. This makes it a multipurpose solution beyond just breadboards.
Its size is larger than typical modules, so it takes up more bench space. Additionally, it connects via DC jack rather than directly into the breadboard rails.
Ideal for powering motors, LED strips, or multiple devices. The protection features ensure safety against overloads. This adapter is great for versatile projects requiring flexible power.
LCD Monitoring
The LCD screen displays the exact voltage output so you can adjust it precisely without needing a multimeter.
High Current Capacity
With up to 3A of current, this power supply can handle demanding loads that standard breadboard modules cannot support.
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Buying Guide – How to Choose the Best 12V Breadboard Power Supply
Selecting the right power supply involves considering several key factors that affect performance and compatibility. We break down these elements to help you make an informed decision.
Input Voltage Compatibility
Check the input voltage range of the module to ensure it matches your power source. Most support 6.5V to 12V DC or USB, but higher input ranges offer more flexibility.
Ensure your adapter or battery falls within the supported input range to avoid damaging the module or failing to power it.
Output Voltage Requirements
Identify the voltage needs of your components. Most microcontrollers require 3.3V or 5V, so verify that the module supports these outputs.
Choose a module with easy voltage selection switches or jumpers to simplify switching between different project requirements.
Current Capacity
Evaluate the maximum current output to ensure it can handle your load. Basic modules provide 700mA, while premium ones offer more for sensors or motors.
If your project draws significant current, select a module rated above your total load to prevent voltage drops or overheating.
Breadboard Compatibility
Verify that the module fits your breadboard type. Most are designed for MB102 boards, but checking dimensions ensures a secure fit.
A secure fit ensures stable power delivery and prevents accidental disconnection during testing phases.
Protection Features
Look for modules with short-circuit or over-current protection to safeguard your components. These features prevent damage when wiring errors occur.
Safety features are especially important for expensive microcontrollers and sensors that could be ruined by power surges.
Number of Units
Consider if you need multiple units or a single module. Bulk packs offer better value for classrooms or large workshops.
Buying in bulk can save money and ensure you have spares for different workstations or projects simultaneously.
Additional Features
Some modules include USB ports, LED indicators, or adjustable outputs. Decide which extra features add value to your workflow.
Features like indicators help you quickly verify power status without extra testing equipment.
Budget Constraints
Set a budget that balances cost and features. Basic modules are affordable, while advanced ones cost more but offer better performance.
Often, a slightly higher initial investment yields better reliability and longevity for your projects.
How to Use and Care for Your 12V Breadboard Power Supply
Insert the module into the power rails of your breadboard securely to ensure good contact. Connect your input power source via the DC jack or USB port as required.
Set the output voltage switches to match your components needs. Turn on the module and check the LED indicator to confirm power is active before wiring components.
Store the module in a dry place away from dust when not in use. Avoid overloading the current limit to prevent overheating and extend the lifespan of the module.
Frequently Asked Questions
Can I use a USB cable to power my breadboard module?
Yes, most modules support USB power. However, ensure the USB source provides sufficient current for your load. Standard USB ports may only provide 500mA, so check requirements carefully.
What voltage do I need for Raspberry Pi?
Raspberry Pi typically requires 5V with at least 2A current. Ensure your module supports this output or use a dedicated power supply to avoid brownouts.
Do I need a power adapter for every module?
Not every module comes with an adapter. Many support USB power, so check if an adapter is included or if you can use a phone charger instead.
Can I connect multiple modules for higher current?
It is generally not recommended to connect power modules in parallel due to potential voltage mismatches. Instead, use a single module rated for your total current needs.
How do I know which voltage my sensor needs?
Check the sensor's datasheet for operating voltage. Most sensors work at 3.3V or 5V. Select the module output accordingly to avoid damaging the sensor.
Are these modules suitable for motors?
Standard modules are best for low-power logic circuits. Motors often draw high current. Use a motor driver powered by a dedicated source to avoid overloading the module.
Final Thoughts on Choosing the Best 12V Breadboard Power Supply
We highlighted top picks like the 2-Pack Module for its balance of features and value. Each option offers unique benefits depending on your project complexity and budget.
Prioritize current capacity and protection features if you work with sensitive components. For bulk needs, consider packs that offer multiple units at a lower cost per unit.
Prices and availability can change quickly. Always check the current pricing and reviews before finalizing your purchase to ensure you get the best deal available.