How to Use MB102 Breadboard Power Supply Module 3.3V/5V: Examples, Pinouts, and Specs

The MB102 Breadboard Power Supply Module by CorpCo is a compact and versatile power supply solution designed specifically for breadboard-based prototyping. It provides selectable output voltages of 3.3V and 5V, making it ideal for powering a wide range of electronic components and microcontroller projects. This module is easy to use, fits snugly onto standard breadboards, and eliminates the need for bulky external power supplies.

• Powering microcontrollers such as Arduino, ESP8266, and Raspberry Pi Pico.
• Supplying regulated voltage to sensors, LEDs, and other electronic components.
• Prototyping circuits on breadboards for educational or development purposes.
• Testing low-power devices in a controlled environment.

The following table outlines the key technical details of the MB102 Breadboard Power Supply Module:

The MB102 module has several key pins and connectors. The table below describes their functions:

1. Powering the Module:

   • Connect a DC power adapter (6.5V - 12V) to the barrel jack input, or use a USB cable to supply 5V via the USB Type-A port.
   • Ensure the power switch is in the "OFF" position before connecting the power source.

2. Setting the Output Voltage:

   • Use the voltage selector jumpers to choose between 3.3V and 5V for each power rail.
   • Place the jumper on the appropriate pins labeled "3.3V" or "5V" for the desired output.

3. Connecting to a Breadboard:

   • Insert the module's pins into the power rails of a standard 830-point breadboard.
   • Ensure the module is securely seated to avoid loose connections.

4. Powering Components:

   • Connect your components to the breadboard's power rails.
   • Flip the power switch to the "ON" position to supply power to the circuit.

• Input Voltage: Ensure the input voltage does not exceed 12V to avoid damaging the module.
• Current Limitations: Do not exceed the maximum output current of 700mA to prevent overheating.
• Polarity: Double-check the polarity of your connections to avoid short circuits.
• Heat Management: If the module becomes excessively hot, reduce the load or check for short circuits in your circuit.

The MB102 module can be used to power an Arduino UNO via its breadboard connections. Below is an example of how to connect and use the module:

1. Set the MB102 output voltage to 5V using the voltage selector jumper.
2. Insert the MB102 module into the breadboard and connect the breadboard's power rails to the Arduino's VIN and GND pins.
3. Flip the power switch to "ON" to power the Arduino.

// Example: Blink an LED using Arduino UNO powered by MB102 module
// Ensure the MB102 output is set to 5V and connected to the Arduino VIN and GND pins.

int ledPin = 13; // Pin connected to the onboard LED

void setup() {
  pinMode(ledPin, OUTPUT); // Set the LED pin as an output
}

void loop() {
  digitalWrite(ledPin, HIGH); // Turn the LED on
  delay(1000);               // Wait for 1 second
  digitalWrite(ledPin, LOW);  // Turn the LED off
  delay(1000);               // Wait for 1 second
}

1. Can I use the MB102 module with a 9V battery?

   • Yes, you can connect a 9V battery to the DC barrel jack input, but ensure the battery can supply sufficient current for your circuit.

2. What happens if I exceed the maximum current rating?

   • Exceeding 700mA may cause the module to overheat or shut down. Always monitor the current draw of your circuit.

3. Can I use both 3.3V and 5V outputs simultaneously?

   • Yes, the MB102 module allows you to configure one power rail for 3.3V and the other for 5V.

By following this documentation, you can effectively use the MB102 Breadboard Power Supply Module for your electronic projects.