SHILLEHTEK Universal Power Supply Module
4.6Editor score
Supports 6.5 to 12V DC input
Provides 3.3V and 5V outputs
Plugs directly into MB102 breadboards
In this guide
Finding the right power source is critical for any electronics project. A reliable 12V breadboard power supply ensures your components receive steady voltage without risk of damage. Whether you are building sensors or microcontrollers, stable power is the foundation of success.
We evaluated ten top-rated modules based on input flexibility, output current, and ease of use. Each product offers unique features like dual-channel control or USB compatibility. Our analysis helps you match the supply to your specific prototyping needs.
Each pick highlights key strengths and potential limitations for real-world use. Prices and availability change frequently so check current listings before buying. Use this guide to streamline your workspace and protect your valuable electronic components effectively.
Top 3 Picks for Best 12V Breadboard Power Supply
2-Pack Breadboard Power Supply Module
4.5Editor score
Dual independent channel control switches
Supports Type-C USB power input
Includes short-circuit protection features
LM2596 Multi Channel Switching Power Supply
4.8Editor score
Adjustable output up to 40V input
Supports 3.3V 5V and 12V
Multi-channel switching for efficiency
Top 10 Best 12V Breadboard Power Supply in 2026 Compared
The following table provides a side-by-side comparison of the top ten power supplies. It highlights key specifications like input range, output voltage options, and unique features to help you make an informed decision quickly.
ProductsSpecificationsEditor scorePrice
Editor's Choice
2-Pack Breadboard Power Supply Module
Input: USB or DC 6-12V
Output: 3.3V or 5V per rail
Max Current: 2A per channel
Features: Dual switches and LEDs
4.5Editor score
Editor's Choice
WWZMDiB 5 Pcs Power Supply Module
Input: DC 6.5-12V or USB
Output: 3.3V or 5V fixed
Max Current: Less than 700mA
Includes: 5 Pcs 9V Connectors
4.2Editor score
Best Premium
HJ Garden Electronic Component Kit
Input: DC 6.5-12V or USB
Output: 3.3V or 5V selectable
Includes: Breadboard and Jumper Wires
Adapter: 12V 1A Power Supply
4.0Editor score
HiLetgo 5pcs Power Supply Module
Input: DC 6.5-12V or USB
Output: 3.3V or 5V fixed
Max Current: Less than 700mA
Compatibility: MB102 prototype boards
4.3Editor score
SHILLEHTEK Universal Power Module
Input: DC 6.5-12V or USB
Output: 3.3V or 5V fixed
Compatibility: Arduino and ESP32
Design: Solderless plug-in board
4.6Editor score
5 Pack Breadboard Power Supply Module
Input: DC 6.5-12V or USB
Output: 3.3V or 5V via jumper
Max Current: Less than 700mA
Includes: 5 Pcs 9V Connectors
4.5Editor score
DIY Breadboard Power Supply Kit
Output: 3.3V 5V 12V Adjustable
Features: Built-in digital display
Type: LM2596 Soldering Kit
Use: Labs and Makerspaces
4.1Editor score
SunFounder BreadVolt Power Module
Output: 5V/1.5A or 3.3V/1A
Features: Independent channels and USB
Compatibility: Raspberry Pi and Pico
Size: Compact 52mm by 32mm
4.5Editor score
LM2596 Multi Channel Switching Supply
Input: 5V to 40V DC range
Output: 3.3V 5V 12V ADJ
Type: Multi-channel switching module
Adjustability: Voltage adjustable output
4.8Editor score
Wefomey Universal Variable Adapter
Output: 3V to 24V adjustable
Max Power: 72W at 3A
Features: LCD display and tips
Safety: Over-current and short protection
4.5Editor score
1. 2-Pack Breadboard Power Supply Module – Best Overall Value
2-Pack Breadboard Power Supply Module
Dual input USB or DC 6-12V
Independent left and right channel control
Output 5V at 2A or 3.3V at 1A
Includes short-circuit protection circuitry
This module stands out with its dual-channel design and USB-C input option. It receives high ratings for reliability and ease of use. The ability to power two rails independently makes it versatile for complex projects.
Pros
- Dual independent power switches for each rail
- Supports modern Type-C USB power input
- Sits flush to save tie-points on board
- Visual LED indicators show active rails
- Includes two units for multiple stations
Cons
- Requires separate purchase for jumper wires
- No onboard voltage adjustment capability
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The independent right and left channel control allows you to run 3.3V and 5V simultaneously. You can turn off one side without affecting the other. This flexibility is essential when testing circuits with mixed voltage needs.
While it offers excellent value, you may need to buy jumper wires separately. Also, the voltage is fixed so you cannot adjust it beyond 3.3V or 5V. These are minor trade-offs for the convenience and protection features offered.
Ideal for students and makers working on multiple boards. The 2-pack ensures you always have a backup. Buy this if you need a robust and flexible power distribution solution for your electronics lab.
Dual Channel Independence
Separate switches allow you to power different parts of your circuit with different voltages safely.
Modern Power Input
Support for Type-C USB means you can use standard phone chargers or power banks for testing.
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2. WWZMDiB Power Supply Module – Best Bulk Kit
WWZMDiB 5 Pcs Power Supply Module
Input DC 6.5-12V or USB power
Output 3.3V or 5V fixed voltage
Max current output less than 700mA
Includes five 9V battery connectors
This kit offers five modules at a budget-friendly price. It is ideal for group projects or classrooms needing multiple supplies. The inclusion of 9V connectors adds flexibility for battery-powered tests.
Pros
- Five modules included for classroom or lab
- Compatible with 400 and 830 point boards
- Includes 9V connectors for battery power
- Affordable price per unit in pack
- Simple plug-and-play design
Cons
- Lower current limit of 700mA
- Fixed voltage output without adjustment
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The modules support both DC and USB input. They fit standard 400 and 830 point solderless breadboards. However, the current limit is around 700mA which may not suit high-power components.
Some users report that the plastic casing can feel light. The fixed voltage is fine for standard logic but limits advanced use. Overall, it provides great value for basic prototyping needs.
Buy this if you need multiple units for students or backup. It is perfect for simple sensor projects. Check current voltage requirements before relying on the current limit.
Bulk Value
Getting five units for this price makes it an excellent choice for educational settings or workshops.
Battery Option
The included 9V connectors allow you to power your breadboard without a wall adapter.
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3. LM2596 Switching Supply – Best Adjustable Option
LM2596 Multi Channel Switching Power Supply
Input voltage 5V to 40V DC
Outputs 3.3V 5V 12V and Adjustable
Multi-channel switching for higher efficiency
High input tolerance for versatile use
This switching power supply offers exceptional flexibility with adjustable outputs. It supports inputs from 5V up to 40V. The multi-channel design ensures efficient power distribution for your projects.
Pros
- Adjustable output voltage for custom needs
- High input tolerance from 5V to 40V
- Multi-channel switching improves power efficiency
- Ideal for diverse electronics projects
- Strong reliability and performance ratings
Cons
- May require soldering for connection
- Lacks onboard LED status indicators
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Unlike standard modules, this allows you to tune voltage. The LM2596 chip is known for efficiency. It handles higher input voltages better than linear alternatives.
You might need to solder wires to connect it. It also lacks visual status lights like others. These are acceptable trade-offs for the power and adjustability it provides.
Select this for advanced projects needing specific voltages. It is great for robotics or motor control. Ensure your setup can handle the input range safely.
Wide Input Range
Supporting up to 40V input means you can use a variety of power sources easily.
Adjustable Output
The adjustable channel lets you set exact voltage levels for unique components.
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4. HJ Garden Component Kit – Best Starter Bundle
HJ Garden Electronic Component Kit
Includes 830P MB-102 solderless board
Provides 12V 1A power adapter
Module offers 3.3V and 5V outputs
Includes 65pcs colorful jumper wires
This kit is designed for beginners who need everything in one box. It includes the breadboard, power module, and a 12V adapter. It removes the hassle of buying parts separately.
Pros
- Complete kit with board and adapter
- Ready to use out of the box
- Includes necessary jumper wires
- Good for beginners needing all parts
- Compatible with major microcontrollers
Cons
- Power supply stability varies sometimes
- Module current limited to 700mA
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The power module works well with Arduino and Raspberry Pi. However, the adapter stability can vary. The module current limit of 700mA is standard but may be tight for motors.
Some components might feel generic compared to premium brands. The jumpers are decent but could be higher quality. Still, it saves time on sourcing initial parts.
Choose this if you are new to electronics. It simplifies the setup process. Verify adapter ratings for your specific project needs.
Complete Solution
You get the board module and adapter together so you can start building immediately.
Beginner Friendly
Everything is pre-selected to match common microcontroller requirements.
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5. HiLetgo Power Module – Most Trusted Brand
HiLetgo 5pcs Power Supply Module
Input DC 6.5-12V or USB
Output 3.3V or 5V fixed
Max output current under 700mA
Designed for MB102 prototype boards
HiLetgo is a popular name in maker supplies. This pack provides five modules for a reasonable price. They are known for reliability and consistent performance.
Pros
- Well-known brand with consistent quality
- Simple dual output pin design
- Five units included in the pack
- Works with DC or USB power
- Compact size fits standard breadboards
Cons
- No independent channel switches included
- Fixed voltage without adjustment option
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Each module offers 3.3V and 5V outputs. You can use DC or USB input. The design is simple with pins on the board.
It lacks individual switches for each rail. The voltage is fixed. These are standard trade-offs for this tier. Overall quality remains strong.
Buy this for reliable standard voltage needs. It is great for classrooms or personal use. Check if you need separate switches.
Proven Reliability
HiLetgo has a strong reputation for consistent module quality in the maker community.
Compact Design
The modules are small enough to fit on standard breadboards without taking much space.
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6. SHILLEHTEK Universal Module – Best Value Single Unit
SHILLEHTEK Universal Power Supply Module
Input DC 6.5-12V or USB
Output 3.3V or 5V
Compatible with ESP32 and Arduino
High-quality component build
This module is a single unit but performs exceptionally well. It has high ratings for stability and reliability. It works seamlessly with common platforms like ESP32 and Arduino.
Pros
- Excellent performance per dollar
- High ratings for reliability
- Compatible with low-power devices
- Easy to use plug-in design
- Stable power distribution
Cons
- Only one unit per pack
- Fixed voltage output
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The build quality uses high-quality components for efficiency. It supports dual inputs and standard outputs. It is designed for solderless breadboards for convenience.
You get only one module in the pack. You cannot adjust voltage beyond the preset levels. For most hobbyists this is not a major issue.
Buy this if you need a single reliable replacement. It offers high value for the price. Verify compatibility with your project voltage needs.
Efficiency Focus
The module is built to ensure your project has stable power for longer test runs.
Seamless Integration
It integrates easily with MB102 breadboards to keep your setup tidy.
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7. 5 Pack Power Module – Best for Battery Use
5 Pack Breadboard Power Supply Module
Output 3.3V or 5V selectable
Input DC 6.5-12V or USB
Includes five 9V battery connectors
LED indicator and ON/OFF switch
This pack gives you five modules plus 9V connectors. It is ideal if you want to run portable tests. The LED indicator helps you see power status easily.
Pros
- Five units for multiple projects
- Includes 9V connectors for batteries
- LED status indicator visible on board
- Self-locking switch for easy control
- Fixed regulated output for safety
Cons
- Current limited to 700mA max
- Switch can be easy to flip accidentally
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The module uses a self-locking switch. It provides regulated output for stability. Current output stays below 700mA which is standard.
The switch design is convenient but sensitive. The current limit may restrict high-power uses. However for general electronics it is sufficient.
Buy this for battery-powered prototyping. It allows you to move projects without cords. Check power needs for your sensors.
Battery Ready
The included 9V connectors let you power projects from batteries instead of wall adapters.
Clear Status
The green LED gives you a clear visual cue when the power rail is active.
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8. DIY Power Supply Kit – Best for Hands-On Learning
DIY Breadboard Power Supply Soldering Kit
LM2596 module with adjustable output
Includes digital display and switch
Provides 3.3V 5V 12V
Requires soldering for assembly
This kit is a project for those who want to build their own power source. It uses the LM2596 chip for adjustable voltage. It includes a digital display for clear readings.
Pros
- Built-in display shows real voltage
- Adjustable output with precision
- Multiple voltage outputs on one board
- Great for learning electronics
- Supports negative voltage optionally
Cons
- Requires soldering skills to build
- Not plug-and-play ready out of box
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You can select from 3.3V 5V and 12V. It helps reduce wiring errors. The design is ideal for labs and makerspaces.
You need to solder components yourself. It is not ready to use immediately. This requires time and skill to assemble.
Buy this if you enjoy soldering. It is educational and useful. Ensure you have the necessary tools.
Visual Feedback
The built-in display lets you see the exact voltage before connecting your circuits.
Multi-Voltage Option
Having multiple outputs on one board simplifies your breadboard layout.
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9. SunFounder BreadVolt – Best for Raspberry Pi
SunFounder BreadVolt Breadboard Power Supply Module
Output 5V at 1.5A and 3.3V at 1A
Compatible with Pico W and ESP32
Includes USB output port
Independent channels on board
This module is designed for modern devices like Raspberry Pi. It provides higher current on the 5V rail. It is compact and easy to install.
Pros
- Higher current for 5V rail
- Includes USB output port
- Compatible with modern microcontrollers
- Compact size for tight spaces
- Simple on/off switch
Cons
- Breadboard sold separately
- Slightly higher price
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The USB output allows for extra flexibility. Independent channels offer stability. It is beginner-friendly and reliable.
It does not include a breadboard in the pack. The price is slightly higher than generic units. Still it delivers stable power.
Choose this for advanced microcontroller projects. It ensures enough power for Pi. Check current requirements before using.
High Current Option
The 1.5A output for 5V is great for devices that need more power.
Modern Compatibility
Designed specifically for newer boards like Pico W and ESP32.
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10. Wefomey Universal Adapter – Best High Power Option
Wefomey Universal Variable Adapter
Output 3V to 24V adjustable
Max power 72W at 3A
Includes multiple DC tips and clips
LCD display for voltage reading
This adapter is not a direct module but a versatile power source. It offers a wide voltage range and high power. It includes clips for connecting to bare wires.
Pros
- Wide voltage range up to 24V
- High current capacity of 3A
- Includes alligator clips for breadboards
- LCD display shows real-time voltage
- Comprehensive safety protection built-in
Cons
- Not a direct board plug-in module
- Uses external tips for connection
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The LCD display shows voltage in real-time. It has many safety features and tips. It is excellent for powering various devices.
It requires connecting wires to the breadboard. It is not a standard board plug. However it offers high flexibility for power.
Buy this for high-power projects. It works for LED strips and motors. Check connector compatibility for your needs.
High Power Support
With 72W max power it can drive LEDs and motors easily.
Universal Connectors
Multiple tips and clips ensure you can connect to almost any device.
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Buying Guide – How to Choose the Best 12V Breadboard Power Supply
Choosing the right power supply involves several factors. We break down the most critical aspects to help you find the best option for your needs.
Voltage Output Options
Most modules provide fixed outputs of 3.3V and 5V. These cover most microcontroller needs. Some advanced modules offer adjustable output via a potentiometer or dial. Ensure the module supports the voltage your project requires.
Always verify that the output matches your component specs to avoid damage.
Input Voltage Range
A good module accepts a range of input voltages. Look for DC 6.5V to 12V inputs. Some also support USB power. This flexibility lets you use various adapters or power banks.
A wider input range means you can use different power sources easily.
Output Current Capacity
Current rating determines how much power you can draw. Standard modules provide up to 700mA. Higher-end ones might offer 1A or 2A per rail. Check your component needs to ensure the module can supply enough current.
Underpowering can lead to instability or brownouts.
Channel Independence
Some modules allow you to control left and right rails separately. This is useful for testing dual-voltage circuits. Look for independent switches or jumpers for each rail. It adds flexibility to your workspace.
Independent channels save you from rewiring constantly.
Protection Features
Safety is critical for protecting electronics. Look for short-circuit and over-current protection. Some modules include thermal protection as well. These features prevent damage during wiring mistakes.
Always choose a module with safety features to protect your hardware.
Physical Compatibility
Ensure the module fits your breadboard type. Most fit 400 or 830 point boards. The module should plug directly into the power rails. Some include 9V connectors for battery options.
Check connector types and board dimensions before buying.
Indicator LEDs
Visual status LEDs help you know when power is on. They confirm which rails are active. This saves time when troubleshooting. Modules without LEDs require a multimeter check.
LEDs make it easier to monitor power status quickly.
Value and Quantity
Some packs include multiple units. Others offer a single unit with extra accessories. Evaluate if you need spare modules or a single reliable unit. Bulk packs are great for classrooms or groups.
Buy enough units to cover all your needs.
How to Use and Care for Your 12V Breadboard Power Supply
First insert the module into the power rails of your breadboard. Ensure the positive and negative pins align correctly. Most modules have clear markings on the bottom.
Next connect your power source via USB or DC adapter. Adjust voltage settings if your module allows it. Verify the output with a multimeter before connecting components.
Finally monitor the LEDs to confirm power. If using high power check for heat. Unplug the module when not in use to prevent drain.
Frequently Asked Questions
Can I use a 12V adapter with a 5V output module?
Yes most modules accept 12V input and step it down to 5V or 3.3V. The module handles regulation internally. Always check the input range before connecting.
What is the maximum current I can draw from these modules?
Standard modules offer up to 700mA per rail. Higher-end units may provide 1A or 2A. Exceeding the limit can cause shutdown or damage. Check specs before use.
Do these modules work with Arduino and Raspberry Pi?
Most are designed for Arduino and Raspberry Pi. They support 5V and 3.3V logic levels. Verify your specific board voltage requirements.
How do I know if the module is shorted?
Look for indicator LEDs. If they do not light up the module may be in protection mode. Check wiring and connections. Most modules reset after disconnecting the short.
Can I use these for high power motors?
No standard modules are for logic and sensors. Motors often need more current. Use a dedicated motor driver for high power loads.
Are these power supplies suitable for outdoor use?
Most are not weatherproof. Indoor use is recommended. If using outside ensure dry conditions. Use a battery module for portable needs.
What if my module does not turn on?
Check power source and input voltage. Ensure pins are inserted correctly. Try a different power supply. Some modules have fuses that may blow.
Is there a difference between 3.3V and 5V rails?
Yes they provide different voltages. 5V is for Arduino. 3.3V is for ESP32. Some modules allow separate control.
Final Thoughts on Choosing the Best 12V Breadboard Power Supply
The 12V breadboard power supply is essential for reliable electronics. The top picks offer great value and performance for most users.
Prioritize independent channels and protection features. These ensure safety and flexibility during testing.
Always check current prices and specs before buying. Ensure you have enough power for your project.