SHILLEHTEK Universal Power Supply
4.6Editor score
Fits MB102 breadboards
3.3V and 5V outputs
Compact plug-and-play design
In this guide
Finding the right power source is critical for electronics prototyping. A reliable 12V breadboard power supply ensures stable voltage for microcontrollers like Arduino and ESP32. Without proper power, your circuits may fail or damage expensive components during testing phases.
We compared ten top-rated modules based on input options, output stability, and build quality. Our analysis covers compatibility with standard breadboards, current limits, and safety features like over-current protection. Each product was evaluated for ease of use and value for money.
Each pick in this list highlights unique strengths for different project needs. Some offer multiple packs for bulk use while others provide advanced features like adjustable voltage. Remember that product availability and pricing change frequently so verify details before purchasing.
Top 3 Picks for Best 12V Breadboard Power Supply
2-Pack Breadboard Power Supply Module
4.5Editor score
Dual USB and DC inputs
Independent channel control
Built-in circuit protection
SunFounder BreadVolt Breadboard Power
4.5Editor score
High current output capacity
Includes USB output port
Independent channel switches
Top 10 Best 12V Breadboard Power Supply in 2026 Compared
The following table provides a side-by-side comparison of all ten selected power supply modules. It highlights key specifications like input voltage ranges, output currents, and compatibility to help you make an informed decision quickly.
ProductsSpecificationsEditor scorePrice
Editor's Choice
2-Pack Breadboard Power Supply
Input: 6-12V DC USB
Output: 3.3V 5V
Current: 2A 5V 1A 3.3V
Features: Dual Input
4.5Editor score
Editor's Choice
WWZMDiB 5 Pcs Module
Input: 6.5-12V DC
Output: 3.3V 5V
Current: 700mA Max
Pack: 5 Units Included
4.2Editor score
Best Premium
HJ Garden Electronic Component Kit
Input: 6.5-12V DC
Output: 3.3V 5V
Includes: Breadboard 12V Adapter
Current: 700mA Max
4.0Editor score
HiLetgo 5pcs Module
Input: 6.5-9V DC
Output: 3.3V 5V
Current: 700mA Max
Pack: 5 Units Included
4.3Editor score
SHILLEHTEK Universal Module
Input: 6.5-12V DC
Output: 3.3V 5V
Compatible: MB102 Breadboard
Design: Plug and Play
4.6Editor score
5 Pack Breadboard Power Module
Input: 6.5-12V DC
Output: 3.3V 5V
Includes: 9V Connectors
Current: 700mA Max
4.5Editor score
DIY Breadboard Power Kit
Module: LM2596 Adjustable
Output: 3.3V 5V 12V
Display: Digital Voltage Readout
Type: Soldering Kit
4.1Editor score
SunFounder BreadVolt Module
Output: 5V 1.5A
Output: 3.3V 1A
Feature: USB Output Port
Size: Compact 52mm x 32mm
4.5Editor score
LM2596 Multi Channel Supply
Input: 5V-40V DC
Output: 3.3V 5V 12V
Type: Adjustable Voltage
Feature: Multi-Channel Output
4.8Editor score
Wefomey Universal Variable Adapter
Output: 3V-24V Adjustable
Current: 3A Max
Wattage: 72W Total
Feature: LCD Display
4.5Editor score
1. 2-Pack Breadboard Power Supply Module – Best Overall
2-Pack Breadboard Power Supply Module
Dual Input Versatility
Independent Channel Control
Short-Circuit Protection
LED Status Indicators
This dual-pack module stands out as the top choice for serious hobbyists. It offers a 4.5-star rating due to its versatile input options and robust protection features. The ability to use Type-C USB alongside traditional DC jacks makes it highly convenient for modern workspaces.
Pros
- Supports USB and DC inputs
- Independent switches for each rail
- High current output for 5V
- Includes two modules per pack
Cons
- Slightly higher price than single units
- Standard output for 3.3V
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The independent control for left and right rails allows users to power different components at distinct voltages simultaneously. For instance, you can run an ESP32 at 3.3V on one side and sensors at 5V on the other without complex wiring. The 2A output at 5V is also superior to many competitors.
While it costs slightly more than single-unit options, the value is clear. The onboard LED indicators provide immediate visual feedback on power status. The short-circuit protection ensures that accidental wiring mistakes do not fry your expensive microcontrollers during debugging sessions.
This module is ideal for educators and labs needing multiple units for simultaneous projects. It is also perfect for makers who want a reliable backup on hand. If you need versatility and current capacity, this two-pack is the best investment for your prototyping station.
Versatile Power Input Options
Supports both Type-C USB and DC 6-12V inputs for maximum flexibility in power sourcing.
Independent Channel Management
Features separate switches and voltage toggles for left and right rails to simplify complex circuits.
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2. WWZMDiB 5 Pcs Module – Best for Bulk Kits
WWZMDiB 5 Pcs Power Supply Module
Input Voltage Range
Output Voltage Options
Current Limitations
Connector Inclusivity
The WWZMDiB pack offers a cost-effective solution for classrooms or large group projects. With five modules included, it ensures every student or team has access to stable power. The compatibility with both 400 and 830 point breadboards makes it a versatile choice for educational settings.
Pros
- Includes five units for bulk use
- Comes with 9V connectors
- Compatible with various breadboard sizes
- Budget-friendly price per unit
Cons
- Lower current output limit
- Basic feature set compared to others
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While the output current is limited to 700mA, this is sufficient for standard logic-level projects involving Arduino Uno or basic sensors. The inclusion of 9V connectors adds convenience for users who prefer battery-powered setups during field testing or portable prototyping sessions.
The trade-off here is performance. You will not find high-current rails or advanced protections like some premium options. However, for simple circuits and learning purposes, this module performs reliably without requiring complex setup or additional wiring beyond standard breadboard connections.
This product is best suited for bulk buyers who need many units at a low cost. It is excellent for STEM education where budget is a primary concern. If you need power for basic logic experiments rather than high-draw motors, this five-pack is a solid functional choice.
Bulk Value for Education
Five units included provide excellent value for classrooms needing multiple power sources for students.
Battery Power Compatibility
Includes 9V connectors allowing easy integration with battery packs for portable projects.
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3. HJ Garden Component Kit – Best Starter Bundle
HJ Garden Electronic Component Power Supply Module Assorted Kit
Breadboard Included
Power Adaptor Included
Voltage Stability
Jumper Wire Kit
The HJ Garden kit provides an all-in-one solution for those new to electronics prototyping. Instead of buying a board and power source separately, you get an 830-point breadboard, a 12V adapter, and the power module itself. This reduces the complexity of sourcing multiple items from different vendors.
Pros
- Complete kit with breadboard and adapter
- Includes jumper wires for connections
- Stable 12V power adapter included
- Good for beginners starting from scratch
Cons
- Power module limited to 700mA
- Assembly required for some parts
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The included 12V 1A adapter ensures that you have a stable power source right out of the box. The power module matches standard MB-102 specifications allowing it to plug directly into the included breadboard. Colorful jumper wires help beginners understand how to route power correctly across rails.
Despite being a budget bundle, the components are functional and safe. The current limit is standard for logic circuits so it handles most Arduino and Raspberry Pi projects without issue. The only downside is that if the module fails you might need to source a specific replacement part separately.
This kit is perfect for hobbyists who want to start building immediately without technical barriers. It removes the guesswork of voltage requirements and connector types. For anyone wanting a complete starter set under one price, this assortment kit delivers practical value and convenience.
Complete Starter Solution
Includes breadboard, power module, and adapter to reduce setup effort for new users.
Color-Coded Connectivity
Comes with colorful jumper wires to simplify understanding circuit connections and routing.
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4. HiLetgo 5pcs Module – Reliable Multi-Pack
HiLetgo 5pcs 3.3V 5V Power Supply Module
Input Voltage Range
Dual Output Pins
Max Output Current
Compact Module Design
HiLetgo modules are widely recognized for reliability in the electronics community. This five-pack offers a practical solution for maintaining a supply of spares or equipping multiple workstations. The design is compact which helps save space on crowded breadboards where tie points are valuable.
Pros
- Five modules included in pack
- Wide input voltage acceptance
- Reliable brand reputation
- Low profile design
Cons
- No visual status indicators
- Lower output current for 3.3V
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The input range supports both DC and USB power providing flexibility based on available infrastructure. The 3.3V and 5V outputs are clearly labeled making it easy to connect power rails correctly. It fits perfectly into standard MB102 breadboards ensuring a secure connection without wobbling.
One minor limitation is the lack of onboard LED indicators so you rely on your multimeter to confirm power. However, the stability of the output voltage remains high under normal loads. This makes it suitable for precise sensor projects where stable voltage is critical.
Buyers looking for a trusted brand at a reasonable bulk price will find this appealing. It is great for workshops where modules may be lost or damaged frequently. If you prefer simple no-frills modules that just work, this pack from HiLetgo is a dependable option.
Trusted Component Quality
HiLetgo is a known brand in electronics offering consistent quality across their power modules.
Space Saving Design
Low profile construction allows it to sit flush on breadboards preserving valuable tie points.
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5. SHILLEHTEK Universal Module – Best Budget Value
SHILLEHTEK Universal Power Supply Module
Universal Breadboard Fit
High Input Voltage Range
Simple Voltage Selection
Stable Power Delivery
This universal module holds the highest user rating among standard options making it a standout choice. It delivers exceptional value for its price point without sacrificing core functionality. The simplicity of operation allows beginners to focus on building circuits rather than troubleshooting power issues.
Pros
- Most affordable option on list
- Highest user rating overall
- Easy plug-and-play setup
- Works with many microcontrollers
Cons
- Singular unit in package
- Basic toggle switches
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The compatibility list is extensive covering major platforms like Arduino and ESP32. You can switch between 3.3V and 5V using a simple jumper mechanism that is intuitive to understand. The input range ensures it works with most standard power adapters found in households or offices.
While it does not come in a multi-pack the single unit is sufficient for most individual hobbyists. The construction feels sturdy enough to withstand repeated insertions and removals from the breadboard. It is a reliable workhorse for daily prototyping tasks.
If you are looking for the best price per reliable unit this is the top contender. It avoids unnecessary features to keep costs down. For anyone on a tight budget who still needs quality power distribution, the ShillehTek module is an excellent entry point into electronics.
Exceptional Price-to-Performance
Offers the lowest price in the comparison while maintaining high reliability and user satisfaction.
Broad Platform Support
Compatible with popular boards like ESP32 and Raspberry Pi ensuring versatility for projects.
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6. 5 Pack Module with Connectors – Convenient Battery Option
5 Pack Breadboard Power Supply Module with 5 Pcs 9V Connector
Plug and Play Design
Dual Voltage Outputs
Multiple Input Options
LED Power Status
This five-pack distinguishes itself by including 9V quick-connect cables which add portability options. You can switch between wall power and battery power effortlessly depending on your project location. The green LED indicator ensures you know exactly when the rails are active.
Pros
- Includes 9V connectors
- Green LED indicator present
- Solid build quality
- Self-locking switch included
Cons
- Fixed regulated output only
- Limited to 700mA current
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The self-locking switch provides tactile confirmation that power is on or off. This prevents accidental drain of battery power when not in use. The design is robust and fits securely into breadboards preventing accidental disconnections during wiring changes.
It is important to note that the output is fixed regulated so you cannot adjust voltage levels beyond the set options. However for 3.3V and 5V this is often exactly what is needed for standard digital logic projects. It handles common circuits effectively without overheating.
This product is well suited for makers who frequently move their projects around. The included battery connectors mean you do not need to buy adapters separately. If you value convenience and a ready-to-use package this pack is a very practical choice for general use.
Battery Power Ready
Comes with 9V connectors making portable battery operation setup quick and easy.
Visual Power Confirmation
Features a green LED to clearly show when power rails are active for safety.
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7. DIY Soldering Kit – Advanced Customization
DIY Breadboard Power Supply Soldering Kit
LM2596 Voltage Regulator
Digital Voltage Display
Multiple Output Options
Adjustable Voltage Output
This kit offers a unique experience for those who want to build their own power supply. It uses the reliable LM2596 regulator which supports higher current loads than standard modules. The built-in digital display allows you to see the exact voltage output in real time.
Pros
- Includes built-in voltage display
- Adjustable voltage output feature
- Supports 12V output directly
- Good for learning electronics
Cons
- Requires soldering to assemble
- Not plug-and-play initially
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The adjustable output means you are not limited to fixed 3.3V or 5V rails. You can tweak the voltage for specific needs like 7V for motors or custom sensors. This flexibility is rare in standard breadboard power modules and adds significant value for advanced experiments.
The trade-off is assembly. You must solder components together which requires tools and skills. This is not suitable for beginners who want immediate results. However it is a fantastic learning tool for understanding how voltage regulation works internally.
Advanced users who need higher currents will appreciate the 12V output capability. It can power larger components that standard modules cannot handle. If you enjoy hands-on work and want custom power levels this DIY kit is the most versatile option available.
Adjustable Voltage Capability
Allows fine-tuning voltage levels beyond fixed options for specialized circuit requirements.
Built-in Digital Readout
Includes a display to visually confirm voltage settings during prototyping for accuracy.
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8. SunFounder BreadVolt – High Current Output
SunFounder BreadVolt Breadboard Power Supply Module
5V 1.5A Output
3.3V 1A Output
Includes USB Output Port
Compact and Portable
The BreadVolt module is designed for projects that draw more current than standard logic circuits. With 1.5A at 5V it can power displays or small motors directly without external regulators. The inclusion of a USB output port makes it a central hub for powering multiple devices simultaneously.
Pros
- Higher current than standard modules
- Integrated USB output port
- Independent channel control
- Supports power-hungry projects
Cons
- Slightly larger footprint
- Higher price point
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SunFounder is a respected brand in the maker community known for quality kits. This module supports a wide range of boards including Raspberry Pi Pico W. The separate switches allow you to manage power distribution flexibly across your workspace without rewiring.
Its compact size still allows it to fit on standard breadboards despite the extra features. The stable output ensures sensitive components like microcontrollers receive clean power without voltage drops. This reliability is crucial when working with complex IoT or robotics projects.
This is an excellent choice for intermediate to advanced makers who need extra power headroom. The USB output feature adds convenience for charging or powering peripherals. If your projects push the limits of typical modules this premium option is worth the investment.
High Current Capacity
Delivers up to 1.5A at 5V supporting larger components like displays and motors.
Integrated USB Port
Features a built-in USB output to power or charge other devices from the same source.
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9. LM2596 Multi Channel – Flexible High Voltage
LM2596 Multi Channel Switching Power Supply
Wide Input Voltage Range
Multiple Output Channels
Adjustable Voltage Output
High Efficiency Switching
This module offers a wide input range allowing it to handle higher voltage sources safely. It supports multiple outputs including 12V which is useful for motors and relays. The adjustable output feature gives you the freedom to customize voltage for specific components.
Pros
- High input voltage tolerance
- Supports 12V output directly
- Adjustable voltage via trimmer
- Very high user rating
Cons
- Requires some wiring setup
- Not pre-assembled for breadboard
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With an input range up to 40V it provides significant headroom for various power sources. The switching design ensures high efficiency reducing heat generation during operation. Users report excellent stability which is crucial for precision electronics work.
Unlike plug-and-play modules this one requires some setup to connect to your breadboard. It is not pre-arranged for direct rail insertion like the others on this list. You will need to solder wires or use breakout headers to make it breadboard friendly.
Despite the setup effort it is perfect for advanced users needing custom power solutions. If you work with sensors requiring precise voltages or motors needing 12V this module is highly capable. It represents a powerful tool for those willing to assemble their own power supply.
Wide Input Voltage Tolerance
Accepts input from 5V up to 40V allowing use with various power sources safely.
Custom Voltage Output
Allows adjustment of output voltage to match specific circuit requirements precisely.
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10. Wefomey Universal Adapter – Heavy Duty Solution
Wefomey Universal Power Supply Variable Adapter
Variable Voltage 3V-24V
High Wattage Capacity
LCD Display for Readout
Multiple Connector Tips
This power supply is a heavy-duty alternative to standard breadboard modules. It offers adjustable voltage from 3V to 24V allowing you to match almost any device requirement. The 72W capacity ensures you can run multiple devices without overloading the adapter.
Pros
- Variable voltage up to 24V
- High 72W total power
- Multiple connector tips included
- LCD real-time display
Cons
- Not a plug-in breadboard module
- External wall adapter format
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The LCD display shows real-time voltage making it easy to verify your settings. It comes with numerous DC tips which cover a wide range of consumer electronics needs. This versatility makes it useful for repairs and testing beyond just prototyping projects.
It is important to note this is a wall adapter not a plug-in module. You will need alligator clips or a breakout board to connect it to a breadboard rails. It is larger and heavier than standard modules so it is best used as a bench power supply.
For advanced makers needing high power and adjustable voltage this is an invaluable tool. It handles projects that exceed the limits of standard modules easily. If you need a reliable and versatile power source for your bench this adapter is a great investment.
Adjustable Voltage Range
Adjustable output from 3V to 24V accommodates a wide variety of electronic devices.
High Power Capacity
Provides up to 72W total power to support multiple devices or high draw components.
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Buying Guide – How to Choose the Best 12V Breadboard Power Supply
Selecting the right power module involves evaluating several technical aspects to ensure safety and compatibility.
Input Voltage Compatibility
Ensure the module accepts your available power source whether it is USB or DC adapter. Most modules accept 6.5V to 12V so check your adapter matches this range.
Always verify the input voltage range matches your existing cables to avoid damage to the module.
Output Current Requirements
Check the maximum current output of the module before connecting high-draw components like motors or LEDs. Standard modules often limit to 700mA which may not suffice for complex projects.
Select a module with higher current capacity if you plan to run many components simultaneously.
Voltage Options
Determine if you need 3.3V or 5V outputs or both. Some modules allow switching between these while others provide fixed rails.
Choose a module that offers both options if you work with mixed voltage circuits.
Breadboard Compatibility
Verify that the module is designed to fit standard MB102 breadboards securely. Poor fit can lead to intermittent power loss during testing.
Look for concave designs that sit flush to preserve tie points on your board.
Safety Protections
Prioritize modules with short-circuit and over-current protection to safeguard your components. These features prevent permanent damage if wiring errors occur.
Always use modules with built-in safety features for reliable prototyping.
Build Quality
Inspect the construction quality of the switch and connector pins. Durable materials ensure long-term use without wear and tear.
Choose brands with good reputations for quality control to ensure safety and longevity.
Portability Needs
Consider if you need battery compatibility for field testing. Some modules support 9V battery connectors which add flexibility.
Look for models with multiple input options if you move your projects frequently.
Ease of Use
Look for visual indicators like LEDs to confirm power status easily. Simple toggle switches or jumpers help avoid confusion during setup.
Select a module that minimizes wiring efforts for faster prototyping.
How to Use and Care for Your 12V Breadboard Power Supply
Plug the module securely into the power rails of your breadboard ensuring the pins align correctly. Verify the orientation to avoid shorting power and ground connections accidentally.
Set the desired output voltage using the jumper or switch before connecting any components. Double-check your circuit requirements to ensure the voltage matches the device specs.
Monitor the temperature of the module during use to ensure it does not overheat. If the module becomes too hot disconnect it immediately to inspect for overloading or faults.
Frequently Asked Questions
Can I use a 12V adapter with a 3.3V output module?
Yes, most modules accept 6.5V to 12V input and regulate it down to 3.3V or 5V. Ensure your adapter provides stable voltage within the input range to avoid damage.
What is the maximum current I can draw from these modules?
Standard modules typically limit output to around 700mA. For higher current needs, look for upgraded versions like the SunFounder BreadVolt which offers 1.5A at 5V.
Do I need to solder these power modules to my breadboard?
No, most modules are designed to plug directly into the breadboard power rails without soldering. This makes them easy to remove and replace as needed for testing.
How do I know which voltage rail is active?
Many modules include LED indicators to show power status. If yours lacks an LED, use a multimeter to verify voltage on the rails before connecting sensitive components.
Can these modules power Raspberry Pi projects?
Yes, they can power a Raspberry Pi if the current draw is within limits. For Pi Zero or Pico they are sufficient but Pi 4 may need higher current sources.
Are these modules safe for beginners?
Yes, most are designed with built-in safety protections like short-circuit prevention. Always follow voltage guidelines to ensure safe and successful prototyping experiences.
How do I replace a faulty power module?
Simply unplug the old module from the breadboard rails and insert a new one. Ensure the new module matches the same physical dimensions for secure connection.
What should I do if the module stops working suddenly?
Check your input power source and connections for faults. If the issue persists, replace the module as internal components may have failed due to overloading.
Final Thoughts on Choosing the Best 12V Breadboard Power Supply
This guide highlighted the top 12V breadboard power supply modules ranging from budget packs to high-capacity options. The 2-Pack module stands out for its versatility while the ShillehTek offers best value for individual buyers.
When choosing prioritize current needs and safety features to protect your circuits. Ensure compatibility with your breadboard size and input voltage to avoid frustration during setup.
Remember that product availability and pricing can change frequently. Always verify the current specifications and deals on the product pages before making your final purchase decision.