SHILLEHTEK Universal Power Supply Module
4.6Editor score
Compatible with MB102 boards
Low cost single unit
USB or DC power input
In this guide
Finding a reliable power source is critical for any electronics project. A good breadboard power supply ensures stable voltage for components like Arduino and Raspberry Pi without damaging sensitive parts.
We compared ten top-rated modules based on input flexibility, output options, and build quality. Our analysis covers everything from basic MB102 modules to advanced switching solutions.
Each pick highlights key specs and ideal use cases to help you choose quickly. Prices and availability change often, so verify details before purchasing to ensure the best deal.
Top 3 Picks for Best 12V Breadboard Power Supply
2-Pack Breadboard Power Supply Module
4.5Editor score
Dual USB and DC input support
Independent channel voltage control
Short circuit protection included
LM2596 Multi Channel Switching Power Supply
4.8Editor score
Adjustable voltage output options
Multiple fixed voltage rails
High efficiency switching design
Top 10 Best 12V Breadboard Power Supply in 2026 Compared
This side-by-side comparison helps you evaluate key specifications across all ten selected power modules. Look closely at input ranges, output currents, and included accessories to find the best fit.
ProductsSpecificationsEditor scorePrice
Editor's Choice
2-Pack Breadboard Power Supply Module
Input USB Type C or DC 6-12V
Output 3.3V 5V independent channels
Protection Short circuit and over current
Package Includes two power modules
4.5Editor score
Editor's Choice
WWZMDiB Power Supply Module 5 Pcs
Input 6.5 to 12V or USB
Output 3.3V or 5V selectable
Max current under 700mA
Includes five 9V connectors
4.2Editor score
Best Premium
HJ Garden Electronic Component Power Supply
Kit includes 830 point breadboard
12V 1A adaptor included
Output 700mA maximum current
65pcs colorful jumper wires
4.0Editor score
HiLetgo 5pcs Power Supply Module
Input 6.5 to 9V DC
Output 3.3V and 5V pins
Max current under 700mA
Compatible with MB102 board
4.3Editor score
SHILLEHTEK Universal Power Supply Module
Input DC 6.5 to 12V
Output 3.3V or 5V
USB power support included
Plugs directly into breadboard
4.6Editor score
5 Pack Breadboard Power Supply Module
Input 6.5 to 12V or USB
Output 3.3V or 5V
Includes five 9V connectors
LED status indicator included
4.5Editor score
DIY Breadboard Power Supply Soldering Kit
Output 3.3V 5V and 12V
Adjustable output voltage option
Built-in digital voltage display
Requires soldering for assembly
4.1Editor score
SunFounder BreadVolt Breadboard Power Supply
Output 5V 1.5A and 3.3V
USB output port included
Independent dual channels
Compact size 52mm x 32mm
4.5Editor score
LM2596 Multi Channel Switching Power Supply
Input 5V to 40V
Output 3.3V 5V 12V
Adjustable voltage output ADJ
Switching power supply design
4.8Editor score
Wefomey Universal Power Supply Variable
Input AC 100 to 240V
Output DC 3 to 24V adjustable
Max 3A 72W power
LCD display for voltage
4.5Editor score
1. 2-Pack Breadboard Power Supply Module – Best Overall 12V Breadboard Power Supply
2-Pack Breadboard Power Supply Module
Input USB C and DC jack
3.3V and 5V independent rails
Short circuit protection built in
Includes two modules in package
This dual pack stands out as the top choice for serious makers. It rates highly for its versatility and safety features. The ability to control each rail independently makes complex prototyping much easier.
Pros
- Flexible input options for any power source
- Independent channel control saves time
- Strong circuit protection prevents damage
- Two units provide great value
- Flush design saves tie points
Cons
- Higher cost per unit than basic models
- Requires Type-C or DC adapter
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You can plug in modern Type-C chargers or classic DC adapters. Each side has its own switch and voltage toggle. This means you can run 3.3V sensors on one side and 5V logic on the other without extra wiring.
While it costs slightly more than single modules, you get two units. The onboard protection cuts power during shorts which saves expensive components. Some users might prefer cheaper options for simple one-off tests.
Buy this if you need reliability and flexibility. It is perfect for workstations or classrooms where multiple projects run at once. The included pair ensures you always have a backup ready for the next build.
It is a smart investment for anyone building regularly.
Dual Power Input Versatility
Supports modern Type-C USB and classic DC inputs so you never hunt for cables.
Independent Channel Control
Run different voltages on left and right rails simultaneously for complex circuits.
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2. WWZMDiB Power Supply Module 5 Pcs – Best Value 12V Breadboard Power Supply
WWZMDiB Power Supply Module 5 Pcs
Input 6.5 to 12V DC or USB
Output 3.3V or 5V
Max current under 700mA
Includes five 9V connectors
This five pack delivers solid value for those needing multiple modules. It works well with standard solderless breadboards. The inclusion of 9V connectors adds unique utility for battery projects.
Pros
- Five units offer excellent bulk value
- Compatible with 400 and 830 point boards
- USB power option available for mobile use
- 9V connectors simplify battery power
Cons
- Lower current capacity than advanced modules
- Basic design lacks additional protection features
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Each unit supports standard input voltages from DC or USB. The output switches between 3.3V and 5V easily. This is ideal for educational settings or bulk buying for a workshop.
The current limit is around 700mA which suits basic logic. It does not have advanced protection like short circuit cut-offs. For high current projects you may need a more robust unit.
Choose this when you need many modules on a budget. The connectors included save money on separate battery clips. It is a practical choice for classrooms or large group prototyping.
Perfect for stocking up without breaking the bank.
Bulk Package Value
Get five modules in one order for classrooms or team projects.
Battery Power Ready
Included 9V connectors make it easy to power from batteries.
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3. HJ Garden Electronic Component Power Supply – Best Kit 12V Breadboard Power Supply
HJ Garden Electronic Component Power Supply
Includes 830 point solderless breadboard
12V 1A power adaptor included
Output 700mA maximum current
65pcs colorful jumper wires included
This kit is perfect for beginners who want everything in one box. It includes the breadboard adaptor and wires needed to start testing. The module provides stable voltage for basic Arduino projects.
Pros
- Complete kit saves buying separate parts
- Includes breadboard and adaptor together
- Jumper wires ready for immediate use
- Stable power source for learning
Cons
- Current limited to 700mA maximum
- Standard module without advanced safety
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You get a dedicated 12V adaptor which ensures clean power. The jumper wires are color coded for easier circuit building. This removes the friction of sourcing compatible cables separately.
The power module is standard with 700mA limit. It lacks independent channel control or advanced protection. For heavy loads you might need to upgrade to a separate high current source.
Select this kit if you are new to electronics. It covers all the basics required for first prototypes. Having a full set simplifies the learning process significantly.
Great for first-time users setting up a workspace.
All-In-One Starter Kit
Get breadboard power supply and jumper wires together for quick setup.
Stable Adaptor Included
The included 12V adaptor ensures consistent voltage without adapters.
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4. HiLetgo 5pcs Power Supply Module – Most Compact 12V Breadboard Power Supply
HiLetgo 5pcs Power Supply Module
Input 6.5 to 9V DC or USB
Output 3.3V and 5V pins
Max current under 700mA
Compatible with MB102 board
This five pack from HiLetgo offers reliable power for standard boards. It fits MB102 breadboards perfectly. The units are small enough for portable project boxes.
Pros
- Five units for low total cost
- Compact design fits tight spaces
- Standard input voltage range
- Works with common breadboards
Cons
- Input range capped at 9V DC
- No advanced safety features included
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Input options include USB or DC from 6.5V to 9V. Output pins provide fixed 3.3V or 5V rails. This simplicity makes it easy to use without confusion.
The current limit is typical for these modules at 700mA. It lacks short circuit protection or channel switches. You must be careful not to overload the board.
Choose this for simple prototyping on a budget. Five units cover multiple projects or workstations. It is a standard solution for routine electronics testing.
Ideal for builders who need basic power options.
Compact Fit
Small design saves tie points on standard solderless breadboards.
Simple Interface
Fixed output pins make connection straightforward for beginners.
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5. SHILLEHTEK Universal Power Supply Module – Best Budget 12V Breadboard Power Supply
SHILLEHTEK Universal Power Supply Module
Input DC 6.5 to 12V
Output 3.3V or 5V
USB power support included
Plugs directly into breadboard
This module stands out for its affordability and universal fit. It rates highly for value. The design works seamlessly with MB102 breadboards and common microcontrollers like ESP32.
Pros
- Lowest price point available
- Universal compatibility with major boards
- Dual input power options
- Simple plug and play use
Cons
- Single unit rather than pack
- Standard protection levels only
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You can power it via USB or DC input from 6.5V to 12V. The output toggles between 3.3V and 5V easily. This flexibility suits most low power sensor projects.
As a single unit it costs less than multi-packs. It does not include advanced protection features. For delicate sensors this is usually sufficient without extra cost.
Pick this if budget is your main priority. It is perfect for students or hobbyists needing a single reliable module. The universal compatibility saves time on checking specifications.
Smart choice for cost conscious makers needing standard power.
Affordable Universal Fit
Low cost option that works with most standard breadboards.
Flexible Power Input
Supports USB and DC inputs for convenience anywhere.
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6. 5 Pack Breadboard Power Supply Module – Best Bulk 12V Breadboard Power Supply
5 Pack Breadboard Power Supply Module
Input 6.5 to 12V DC or USB
Output 3.3V or 5V
Includes five 9V connectors
LED status indicator included
This five pack offers a complete supply for classrooms. Each module features an LED indicator so you can see power status. The included 9V connectors allow quick battery connection.
Pros
- Five modules provide great supply
- LED indicators show power status clearly
- 9V connectors included for battery power
- Compatible with common breadboard sizes
Cons
- Basic regulator without safety cutoff
- Current limited to 700mA
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Input supports DC or USB from 6.5V to 12V. The output is selectable 3.3V or 5V. It fits 400 and 830 point solderless breadboards directly.
The current limit is standard for these modules. Safety features are basic compared to premium units. Still it is highly rated for general learning experiments.
Choose this if you need multiple units cheaply. The LED indicators help debug power issues easily. It is a strong choice for group prototyping or teaching.
Excellent for stocking up on essential power modules.
Visual Status Indicators
Green LEDs confirm power status without testing.
Battery Connectors Included
Five 9V cables allow easy portable power.
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7. DIY Breadboard Power Supply Soldering Kit – Most Advanced 12V Breadboard Power Supply
DIY Breadboard Power Supply Soldering Kit
Output 3.3V 5V and 12V
Adjustable output voltage option
Built-in digital voltage display
Requires soldering for assembly
This kit is unique for offering adjustable output and a display. It uses an LM2596 regulator for efficient power. You must solder the parts together which suits advanced users.
Pros
- Adjustable voltage for precise control
- Visual display shows exact output
- Multiple fixed output options included
- Reduces wiring complexity significantly
Cons
- Requires soldering skill to build
- More complex than standard modules
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You get standard 3.3V 5V and 12V fixed outputs plus adjustable. The display lets you verify voltage without a multimeter. This centralizes power for cleaner projects.
Assembly takes time and skill compared to plug in modules. It is not a direct replacement for simple breadboard power. But it offers superior control for complex experiments.
Select this if you want precise control over voltage. It is ideal for labs and advanced hobbyists. The visual feedback saves steps when tuning circuits.
Best for those comfortable with soldering skills.
Visual Voltage Display
Built-in digital readout confirms output voltage instantly.
Multiple Fixed Outputs
Provides 3.3V 5V and 12V rails plus adjustable.
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8. SunFounder BreadVolt Breadboard Power Supply – Best High Current 12V Breadboard Power Supply
SunFounder BreadVolt Breadboard Power Supply
Output 5V 1.5A and 3.3V/1A
USB output port included
Independent dual channels
Compact size 52mm x 32mm
This module provides higher current for power hungry devices like Raspberry Pi. The 1.5A output on 5V makes it reliable for full boards. Independent channels allow mixed voltage operation.
Pros
- Higher current output than standard modules
- USB output for direct device charging
- Independent channel control
- Compact easy to install size
Cons
- Slightly higher price than basic units
- Requires external power source input
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An extra USB port lets you connect devices directly. This saves space on the breadboard rails. The compact size ensures it fits easily even in small layouts.
It is a bit more expensive than basic modules. But the current boost is worth it for complex builds. You still need an external input like 12V or USB.
Choose this for projects needing stable higher current. It suits robotics or IoT builds well. The USB output adds significant convenience for testing.
Recommended for projects needing robust power delivery.
Higher Current Delivery
Delivers 1.5A on 5V for stable operation.
Extra USB Port
Additional USB output simplifies connecting external devices.
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9. LM2596 Multi Channel Switching Power Supply – Best Premium 12V Breadboard Power Supply
LM2596 Multi Channel Switching Power Supply
Input 5V to 40V
Output 3.3V 5V 12V
Adjustable voltage output ADJ
Switching power supply design
This module is rated highest for its flexibility and efficiency. It uses switching regulation which is much more efficient than linear ones. Input supports up to 40V allowing various sources.
Pros
- Wide input voltage range up to 40V
- Adjustable output for custom needs
- High efficiency switching regulation
- Multiple fixed voltage rails
Cons
- Not direct plug-in for breadboards
- Requires external wiring connections
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It provides fixed 3.3V 5V and 12V outputs plus an adjustable channel. This covers almost all voltage needs in one unit. It is ideal for labs where varied power is required.
It is not a direct breadboard plug-in module. You need to wire it to the rails manually. This adds steps but offers superior voltage control.
Pick this for professional or advanced prototyping needs. The adjustable range makes it uniquely versatile. It is a premium choice for serious electronics work.
Best for users needing wide voltage flexibility.
Adjustable Voltage Output
Variable output allows precise tuning for any project.
Wide Input Range
Accepts inputs from 5V to 40V safely.
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10. Wefomey Universal Power Supply Variable – Best Wall Adapter 12V Breadboard Power Supply
Wefomey Universal Power Supply Variable
Input AC 100 to 240V
Output DC 3 to 24V adjustable
Max 3A 72W power
LCD display for voltage
This is a powerful wall adapter rather than a module. It offers 72W power and adjustable voltage from 3V to 24V. The LCD display shows exactly what you are outputting.
Pros
- High 72W power capacity
- LCD shows exact output voltage
- Many adapter tips included
- Multiple safety protections built in
Cons
- Not a breadboard module directly
- Requires alligator clips for boards
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It includes many DC tips for different devices. You can use the alligator clips to connect to bare breadboard rails. This gives it versatility for larger circuits.
It is not a direct plug-in breadboard supply. You need to adapt the output to fit rails. For simple boards a module is easier to use.
Choose this for higher power or variable needs. It suits larger projects needing more wattage. The safety features make it reliable for extended use.
Ideal for powering complex non-breadboard electronics.
High Power Capacity
72W output supports demanding electronics and motors.
LCD Voltage Display
Real time display ensures correct output voltage.
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Buying Guide – How to Choose the Best 12V Breadboard Power Supply
Choosing the right power supply involves considering voltage options, current capacity, and input sources. This guide outlines key factors to ensure you select a unit that matches your project needs.
Output Voltage Options
Most breadboard power supplies offer 3.3V and 5V outputs. These are standard for microcontrollers like Arduino and ESP32. Some advanced modules also provide 12V or adjustable outputs which expand your project capabilities.
Always confirm that the module provides the specific voltages your components require to avoid damage.
Current Capacity
Check the maximum current rating which is often around 700mA for basic modules. Higher current models exist for power hungry devices like Raspberry Pi. Exceeding current limits can cause voltage drops or overheating.
Select a unit with enough headroom for your total circuit load to maintain stability.
Input Source
Modules accept power via USB or DC jack typically ranging from 6V to 12V. USB is convenient for portability but DC offers higher power potential. Ensure you have a compatible power brick or adapter.
Verify the input range matches your available power source to ensure safe operation.
Safety Features
Look for modules with short circuit and over current protection. These features prevent damage to your microcontroller if a wiring mistake occurs. Basic modules may lack this which increases risk.
Prioritize units with protection features when working with expensive components.
Connector Type
Ensure the module fits your breadboard rail spacing such as MB102 style boards. Standard connectors plug directly into the rails without wiring. Some kits include extra 9V connectors for battery options.
Confirm physical compatibility with your specific breadboard before purchasing.
Independent Channel Control
High quality modules have separate switches for each rail. This allows you to run different voltages on left and right sides independently. It adds flexibility for mixed voltage circuits.
Choose models with individual switches if you often test multiple voltage levels.
Package Value
Single units are cheap but multi-packs offer better value for workstations. Buying five units allows multiple users or backup options. Consider how many modules you will realistically use.
Buy in bulk if you plan to build projects frequently.
Additional Features
Some supplies include displays for voltage monitoring or USB output ports. These add convenience but usually cost more. Evaluate if extra features justify the price increase.
Focus on core specs unless you need specific additions like adjustable voltage.
How to Use and Care for Your 12V Breadboard Power Supply
Insert the module firmly into the power rails on your breadboard. Ensure the pins align correctly with the positive and negative rows to avoid reverse polarity issues.
Connect your power source via USB or DC jack before turning the switch on. This prevents arcing and ensures stable voltage delivery during setup.
Regularly inspect the module for heat or damage. Do not exceed current limits and store units in dry places to extend their lifespan.
Frequently Asked Questions
Can I power my Arduino directly with a breadboard power supply?
Yes you can power Arduino boards directly through the power supply rails. Most modules provide the required 5V that matches Arduino USB power. Just ensure current draw does not exceed the module limit.
What is the maximum current I can draw from these modules?
Standard modules usually support around 700mA maximum. Advanced units like the SunFounder support up to 1.5A. Always check the specs to match your component power needs.
Do these modules work with 830 point breadboards?
Most units are designed to fit standard 400 and 830 point solderless breadboards. The connector pins are spaced to match common rail layouts perfectly.
Can I use a phone charger to power the supply?
Yes USB Type-C or Micro-USB powered models work with standard phone chargers. Ensure the charger output is sufficient for your project load.
Is it safe to leave the power on overnight?
It is generally safe but unplugging when not in use extends lifespan. Modules with over current protection reduce risk of fires if shorts occur.
How do I switch between 3.3V and 5V output?
Most modules have a small toggle switch or jumper cap to select the voltage. Set this before connecting your circuit to ensure correct voltage delivery.
Final Thoughts on Choosing the Best 12V Breadboard Power Supply
We highlighted ten top options ranging from basic modules to advanced switching solutions. Each offers unique benefits for different project scales and budgets.
Prioritize safety and current capacity when selecting your unit. A reliable power source prevents damage to your microcontrollers and keeps testing consistent.
Prices change frequently so verify the latest offers before ordering. Check current specifications to ensure compatibility with your specific breadboard setup.