The MB102 Breadboard Power Supply Module is a versatile and compact power solution designed by CorpCo for hobbyists, engineers, and students working on electronic projects and prototypes. This module is specifically created to fit standard solderless breadboards and provides both 3.3V and 5V regulated power outputs, which are commonly required voltages for digital and analog circuits. It is an essential tool for powering microcontrollers, sensors, and other electronic components during the prototyping phase.
Explore Projects Built with MB102 Breadboard Power Supply Module 3.3V/5V
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This circuit features an Arduino UNO as the central microcontroller, interfaced with an RFID-RC522 module for RFID reading capabilities, and a 16x2 LCD screen with I2C for display. It also includes a 4x4 membrane matrix keypad for user input, a buzzer for audio feedback, and two Tower Pro SG90 servos for actuation. The MB102 Breadboard Power Supply Module provides power to the servos, while the Arduino powers the other components.
This circuit is a battery management and power supply system that uses three 3.7V batteries connected to a 3S 10A Li-ion 18650 Charger Protection Board Module for balanced charging and protection. The system includes a TP4056 Battery Charging Protection Module for additional charging safety, a Step Up Boost Power Converter to regulate and boost the voltage, and a USB regulator to provide a stable 5V output, controlled by a push switch.
This circuit is a power management and control system that uses a 12V power supply and a 18650 Li-ion battery pack to provide a stable 5V output through a step-down buck converter. It includes an Arduino UNO, an ESP-8266 controller, a DS1307 RTC module, and a 20x4 I2C LCD display for monitoring and control purposes. The ULN2003A breakout board is used for driving higher current loads.
This circuit serves as a multi-protocol communication hub featuring two ESP8266 NodeMCUs for processing, each connected to a LoRa Ra-02 SX1278 for long-range wireless communication. One NodeMCU is also connected to an RS-485 module for serial communication and a W5500 Ethernet module for network connectivity, with MB102 modules supplying power.
Powering microcontroller platforms such as Arduino, Raspberry Pi, and PIC.
Supplying power to LED displays, sensors, and other low-power electronic components.
Use in educational settings for teaching electronics and circuit design.
Rapid prototyping of digital and analog circuits.
Technical Specifications
Key Technical Details
Input Voltage: 6.5V to 12V DC via barrel jack or USB power.
Output Voltage: 3.3V and 5V DC regulated.
Maximum Output Current:
700mA when powered via USB.
1A when powered via DC barrel jack.
Onboard Voltage Regulator: Ensures stable output voltage.
Power Rails: Dual independent power rails for each voltage.
Switch Mode: Selectable 3.3V, 5V, or OFF via onboard switches.
Pin Configuration and Descriptions
Pin Number
Description
Voltage Level
1
Ground (GND)
0V
2
Output Voltage Select (VOUT)
3.3V or 5V
3
Voltage Input (VIN)
6.5V to 12V
Usage Instructions
How to Use the Component in a Circuit
Connect the MB102 module to the power rails of the breadboard.
Set the desired output voltage using the onboard switches to either 3.3V or 5V.
Connect the power and ground lines from the module to your circuit.
Ensure that the input power source (USB or DC barrel jack) is within the specified range (6.5V to 12V).
Verify that the total current draw of your circuit does not exceed the maximum output current of the module.
Important Considerations and Best Practices
Always check the polarity of connections to prevent damage to the module and your components.
Avoid exceeding the maximum input and output voltage and current ratings.
When using both voltage outputs simultaneously, ensure the combined current does not surpass the maximum limit.
Disconnect power before making or altering connections to prevent shorts and component damage.
Troubleshooting and FAQs
Common Issues Users Might Face
Insufficient Voltage Output: Ensure that the input voltage is within the specified range and that the onboard switches are set correctly.
Overheating: If the module is overheating, reduce the load or check for shorts in your circuit.
Intermittent Power: Check all connections for looseness or damage.
Solutions and Tips for Troubleshooting
Verify that the input power source is stable and within the required voltage range.
Double-check the orientation of the power module on the breadboard.
Inspect the breadboard and module for any signs of damage or wear.
FAQs
Q: Can I power the module using both USB and the barrel jack simultaneously?
A: No, you should only use one power input source at a time to prevent damage to the module.
Q: What is the maximum number of components I can power with this module?
A: This depends on the current draw of each component. Ensure the total current does not exceed 700mA when powered via USB and 1A when powered via the barrel jack.
Q: Is it possible to adjust the output voltage?
A: The output voltage is fixed and can be selected between 3.3V and 5V using the onboard switches.
Example Code for Arduino UNO
// Example code to demonstrate the use of the MB102 with an Arduino UNO
void setup() {
// Set up the built-in LED pin as an output.
pinMode(LED_BUILTIN, OUTPUT);
}
void loop() {
// Turn the LED on (HIGH is the voltage level)
digitalWrite(LED_BUILTIN, HIGH);
// Wait for a second
delay(1000);
// Turn the LED off by making the voltage LOW
digitalWrite(LED_BUILTIN, LOW);
// Wait for a second
delay(1000);
}
This example code will blink the built-in LED on the Arduino UNO, which is powered by the MB102 module set to 5V. Ensure that the Arduino UNO's ground is connected to the MB102's ground and the 5V pin to the 5V output on the MB102.
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